Author Topic: New XR75 K1 1974 Project  (Read 1869 times)

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Offline alexbrown64

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New XR75 K1 1974 Project
« on: August 19, 2017, 08:30:26 PM »
Well, my sister sends me a pic of this bike today and says her partner picked it up for me..
Checked serial numbers and starts with 11..... she's a 74 K1.

Luckily i have just purchased a full Jane zinc kit and heaps of other goodies to rebuild VMX bikes. She seems to be mostly all original, but the side number plates seem to be painted like a 75.
Lots of time to be spent on this old girl...



Cheers

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #1 on: August 20, 2017, 01:38:15 AM »
Does anyone have an original 74 with original side and tank decals.  Every K1 XR i look at has either yellow side cover decals and orange wing tank decals or visa versa or both the same in yellow or orange. The blury brochure pics i have show the darker orange yellow for all decals, but some guy put a pic up of his original XR and they all look yellow.  Which combination was it?

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Offline Richo52

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Re: New XR75 K1 1974 Project
« Reply #2 on: August 20, 2017, 03:40:30 PM »
Nice score Alex,yes yellow is the colour for decals on the K1 ,my mate is restoring 3 or 4 early XR75s currently.
Regards Richo.
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Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #3 on: August 20, 2017, 04:28:04 PM »
Hey Richo, yep, they are a great project bike.  I think i had my first crash on one of those at the old RKMCC track.
Yep, yellow is the color, but all the decal companies come out with two yellows.  A light yellow and a darker golden yellow.  Re-Mx has both colours in the same kit? Lighter number plate and darker tank.  I have a book i have had since i was a kid and it has a colour pic of the K1 and it looks like it has the darker richer yellow like the brochure i put on here... But then the pic of the original bike below seems to be more bright yellow.
Hmmmmmmm.....

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #4 on: August 20, 2017, 05:04:25 PM »
Heres a good example of somebody that has got themselves confused by using some of the graphics kits that are out there for XR's



The richer yellow wing or lighter yellow plate decal?  I don't believe you can have both on the one bike.
As for paint, my research is pointing towards Kia Sage Green Metalic paint code EAB. Apparently the K0 and K1 had a greenish tinge in the grey.

Anyone tried the 2k urethane spray cans that are available.  I am looking at spraymax 2k.

Also, the pipe is OEM but hammered.  This is going to give the Pipe King a real workout.

Cheers,

Offline Richo52

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Re: New XR75 K1 1974 Project
« Reply #5 on: August 20, 2017, 09:27:04 PM »
Whatever yellow you decide will look good on your restos Alex.Im in the process of getting bits to complete a yz80d ,obtained everything for my 2nd RM80b but want to make that one an FMF or DG  replicabike depending what head comes up first.
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Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #6 on: August 20, 2017, 09:36:59 PM »
Sounds like your super busy too.  The B's are a great bike to work on. My mint B runs like a Swiss watch, but the boys N runs like a turd.  I have a new carb, new ignition, everything.  Am pulling it back down a bit and adding a new stator side seal, clean out carb, check ignition, add the B stinger instead of the bigger DG one, and fit another cylinder i have with stock new piston and rings.
Hope to get it running right for a VMX meet later this year.
Be good to see a pic of your B's at some stage.
I remember the YZ80D.  It was pretty quick, but didn't sound half as good as the B. I think the C was better than the E, but i reckon the F and N of 79 were pretty much on par.

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #7 on: August 22, 2017, 04:37:19 AM »
We got the little XR home and the boy loves it. He really wants to ride it, so the plan is to get it going for a few meets later on in the year.
It actually looks better in real life than in the pics.  The patella in the worn tank is amazing. I am going to paint the side panels and mudguards, but i am going to leave the tank with its rust, green and grey hues and knee marks... The tyres are brand new and i think someone had a go at "doing it up".



There is a lot of work to do to the bike just to get it to a meet. Big list keeps growing.  The pipe is coming off and the Pipe King is going to have a look at it but its not an easy job. But thats for the OEM restore in a few years time...may even have to hit GMC up at some stage. There is a nos one on Ebay and guy wants over $1000 US.

In the meantime, i have ordered one of these bad boys complete with the DG decals etc.. This should liven it up and should sound great... i got it on special and he threw in a set of alloy engine mounting plates and it comes with all the mounts etc.



Cheers,




Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #8 on: August 22, 2017, 06:33:27 PM »
The previous owner said he couldn't get it to run.
No wonder.... tank was full of flecks of rust, petcock was full of dirt and leaking, carb was worn out and full of crap, the coil looks like the dog got to it. The airfilter had turned to dust and was just getting sucked into the carb...

I cleaned everything up, got rid of all the dirt and rust, cleaned the plug, wiggled some wires, added some fuel and it started second kick for about 2 seconds.. then died.  Hardly a spark again, fuel dribbling everywhere, backfiring... Mechanically everything is good.  I checked the valve clearances, compression is really good, but the carb and electricals are just too worn out to get the job done, and the petcock is knackered.

We want a running bike, especially before we tear it down and rebuild it ready for a race meeting.  So it was off to re-mx.com and ordering some parts express post to get here asap.

We have ordered a new 20mm carby, new 6v coil, tune up kit with plug, points, condenser, full gasket set and petcock rebuild set.
The original carb and all original parts will be set aside for the complete restore later down the track, but for now we want to get her running right.  Hopefully get the new DG performance pipe on, get all the parts on and get her revving.




Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #9 on: August 23, 2017, 11:01:45 AM »
Massive list (160 parts) of genuine Honda parts coming from Partzilla.
About the only big hurdle at the moment is a broken footpeg mount.  These are actually an alloy block which forms part of the engine cases.  Its snapped where the bolt runs through.
Just wondering if anyone has used this process for case repairing aluminium.  Looks easy, cheap and strong...

https://youtu.be/2rH681CYDgw




« Last Edit: August 23, 2017, 11:53:44 AM by alexbrown64 »

Offline Momus

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Re: New XR75 K1 1974 Project
« Reply #10 on: August 24, 2017, 11:23:29 AM »
Best and really the only sound way to repair the broken foot peg lug is to replace it with a sound case. Those brazing kits are useless for dirty work.

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #11 on: August 24, 2017, 02:49:52 PM »
Momus, The Durafix HTS2000 rod seems like a great way to fix some repairs.  Just have a look at the first 1 minute of the video.  It also shows you how to do a bolt repair exactly the same as mine.  Pic below of the repair spot. The case has the engine number on it, and i want to keep it original, so it has to be the repair. One trick is to drill and tap a few small studs into the block to give the new material more bite.

https://www.youtube.com/watch?v=2rH681CYDgw

It also shows you how to do a bolt repair exactly the same as mine.  Worst comes to worst, i have had a quote of $150 to tig it all up.

Here is a table of the new rods strength.

Tensile: 45,900 PSI    Therm. Exp.: 15.2 x 10- 6in./in./Fo
Elongation: 10% in 2 inches    Elec. Cond: 26 (% of copper std.)
Impact: 43 Ft. lbs (charpy)    S.P. Grav.: 6.6
Shear: 31,000 PSI    Weight: 0.24 lbs/cu. in.
Melting Point: 380oC - 408oC    Rockwell:  48



I pulled the seat apart and the original sponge was toast.. i have ordered a new one, and another seat cover from re-mx



Here is a pic of the power pipe i have purchased.. its on the way now :-) ...



Another problem i have encountered is the dreaded welded gear lever to the splines.  I ground it off and both the lever and shift shaft are toasted.. no splines at all!!  I found a replacement 4 speed shaft and a new shift lever.. these are on the way too.

I popped into my local Paint Place and discussed the situation.  Walked out with a can of Kia EAB Sage Green Pearl Metallic which is supposed to match perfectly with the K0 and K1.  Also got a rather expensive can of gloss black for the frame.  This system matches up with the two cans of 2k clear coat i got.  The cans have the widget to mix the two parts. 
The idea is to lay down the rubbergray paint, then lay down the 2 pack clear.  Allow to dry, rub and then apply the decals. Apply a few more coats of 2 pack over everything.  This should be really glossy, tough,  and protect the tank from fuel spills.

Well, i have to wait now until the new carb, coil, plug, condensor and points arrive so that i can try and get her running and check out the motor, clutch and gearbox.

Cheers,


Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #12 on: August 27, 2017, 11:01:24 AM »
The little XR is pretty original. Most of the decals are still on the bike in one form or another. I will heat them up and peel them off and keep them on contact paper to preserve them.  When the frame gets 2k coated, i will put repro decals on.

Here is the airfilter decal...



And here is the Shock decal.  Most people get this wrong and put the new decals on the outside of the shocks.. but if your ocd, they go on the inside as per original.



Here is a pic of the steering stem decal. Note that the bar clamps are rubber gray. 



The tank had 4 decals.  Two orange wings and two warning decals.  You can still see the outline of where the warning decals sat on the tank.  I will be removing the dents, prepping, base coat and 2k clear the tank. Then put all the decals on in their exact location and then 2k clear over the top..



The swingarm had an exhaust warning decal. I will be getting one of these and putting it on over the gloss black and 2k clear coat.




Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #13 on: September 05, 2017, 12:11:01 PM »
Parts arrived from Re-Mx and i immediately set about putting them all on.  It all went relatively smoothly and i managed to get a really strong spark with the new coil, condenser and points.  The new carb needed the choke lever bending away from the frame and then it fit well. Power pipe went straight on, but will need longer manifold studs.
I had to jam a Chinese shifter on the worn out shaft and really tighten it up so that i could test the box out.

Fired up beautifully and settled into an idle almost immediately.  Power pipe sounds great.  I snicked it into gear and rode off up the street.  Clutch good, gearbox perfect, engine smooth.. power pipe sounds fantastic.  Got her home and made a 40 sec YouTube video of her running.

She is now ready to be torn down and sorted out properly so that it can be entered in a few events. Even have a Vintage style jersey for the boy on the way..

https://www.youtube.com/watch?v=trVBRjKWtnU

Cheers,


Offline Big Scotty

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Re: New XR75 K1 1974 Project
« Reply #14 on: September 05, 2017, 06:02:11 PM »
Gday Alex
I am enjoying your thread on the little XR,got me inspired to drag my kids old xr80 out of the back of the shed and do a bit of a tidy up ready for the next generation.i also sourced some parts from re mx after reading that's were you got yours,I have to say there service so far has been excellent,answered all my emails quickly,would recommend them to any body restoring a mini,look foreword to more updates
Cheers scotty
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Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #15 on: September 05, 2017, 09:03:40 PM »
Thanks Big Scotty.  I forgot how much fun they are. Went up my road today with a big smile on my face. I am just putting another big order together with re-mx which should be the final order to get a decent rebuild.  Hope your XR80 is up and running well.  re-mx sells a bunch of parts for pretty good prices and really helps with getting the old girls up and running.

I have this retro jersey in a small size coming for the lad to match the bike..



Cheers


Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #16 on: October 02, 2017, 12:00:49 AM »
Got stuck into the little XR.
As usual, the more you look, the more you find. The major problems are:

1.) shift shaft, which is stripped and had the shift lever welded on. 
2.) The footpeg bar mount. This 4 bolt mount attaches to the engine.  It looks like a pretzel and has numerous cocky shit welds and patches all over it.
3.) Pipe. Completely smashed and has numerous cracks.
4.) Rear brake lever. This was bent beyond recognition.
5.) Broken alloy footpeg mount on the engine case.

The rest of the stuff is just rust, wear, abuse and age. 
I pulled the bike apart and bagged everything up.  As this rebuild is just a tidy up to have her ready for a bit of fun, i am not going to far.
I straightened up the brake arm and got it ready for the powdercoaters. Had to make sure it cleared the pipe and was functional. 
I cleaned up, ground and rewelded the footpeg bar mount. Also filed the pegs.  These are all going to the powder coaters.
The pipe has been replaced with a  power pipe.
I have removed the clutch cover ready for polishing, and this is where i will go through to replace the shift shaft.
The alloy footpeg mount which is part of the cases will be repaired with the rods i purchased.

I used an abrasive flapper wheel and then a cloth wheel with white polishing bar on some of the alloy covers. I am having great results and will post pics soon of the before and after results.

Pic below of munted brake lever...



Brake lever repaired and ready for powdercoaters..



The rest of the bike is bent, corroded, worn, missing, forked etc... but great fun to rebuild.  And she does run!!



Cheers


Offline Krikey

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Re: New XR75 K1 1974 Project
« Reply #17 on: October 02, 2017, 08:47:20 PM »
I'ma bit inspired Alex. I've got a couple of 74 K1s in the shed in boxes.  I think I'll have to start rebuilding at least one of them soon

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #18 on: October 02, 2017, 10:47:27 PM »
Lucky you Krikey.  I think the K1 was the best looking model with its yellow graphics over the metallic grey.
Hope your two are in better nick than mine. Must admit, they are really rewarding to work on.

I had a go at removing all the old paint from the frame, swingarm, plates etc.. bought this biodegradable paint stripper from Bunnings.  Might as well of rubbed banana on it.  It was useless.  I could of rubbed it in my eyes and i would of been ok.  Had to go back and get the real stuff.  This had the paint bubbling off and i used the pressure washer to blast it back to bare metal.

Not sure which way to go with the black paint.  I bought 2k black and clear coat, but i am leaning towards taking everything to the powder coaters as i want to get the pegs, peg mounts, bash plate etc.. done in powder coat and i also have my YZ125G frame to take up and get done.

 


Offline Big Scotty

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Re: New XR75 K1 1974 Project
« Reply #19 on: October 03, 2017, 03:09:45 PM »
Gday
Got my parts from re mx,new seat foam and cover,new fork legs,been busy out in the shed and got it all back together,double checked everything then time for a test ride,do you think the basted will start,I have had it running on the stand,first kick every time,now it's back on its wheels it won't go,time to walk away.bloody hondas????????????
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Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #20 on: October 03, 2017, 04:36:57 PM »
Great to hear Big Scotty that you got the XR fixed and ready to rock. Strange that it wont start.  Best to walk away and have a think about it.  Cant be much.  Been sitting a long time and may have pulled a bit of crud through from tank or airbox and stuck in the minute jets.
Once i put my new carb and coil on, my little XR  burst into life easy..

Post up some pics once you get her running..

Cheers,


Offline Big Scotty

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Re: New XR75 K1 1974 Project
« Reply #21 on: October 03, 2017, 04:57:28 PM »
Got it going,lots of fuel leaking out of the carb and I think some is running into the engine as well,did you buy your new carb from re mx and how was the jetting,I think either a rebuild or new carb
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Offline Mick D

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Re: New XR75 K1 1974 Project
« Reply #22 on: October 03, 2017, 09:51:21 PM »
Got it going,lots of fuel leaking out of the carb and I think some is running into the engine as well,did you buy your new carb from re mx and how was the jetting,I think either a rebuild or new carb

Nice,

I think the Rubber tip on the float needles go dry and hard in the  absence of fuel and use.

Anyhow that is what I found with the XR500 when prepping for the Bulahdelah Vinduro.
I always undo the drain screws on the carbys when stood up.
It had been sitting unused for a couple of years.

Kept tapping the bowl with the plastic butt of a screw-driver. Would sort of nearly stop leaking,,,
But eventually did after a few days soaking with fuel again,,,,

Moral of my story for me is = start them and use them more often.
« Last Edit: October 03, 2017, 09:53:42 PM by Mick D »
"light weight, and it works great"  :)

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #23 on: October 03, 2017, 10:04:54 PM »
Got the carby from Re-mx, as everything they sell seems to fit and work well. It fitted straight up, but i did have to bend the choke lever away from the frame. 

Didnt touch the jetting.  It started straight up, idled perfectly and i took it for a blast around the park and it ran perfectly, even with the new power pipe.  No burps or backfiring. And this bike has been abused, so im sure yours will be fine.
 
I did make sure the ignition system was good, by replacing the coil, condenser and putting new points in and setting the gap.
I also adjusted the valves.
I cleaned the tank out.

So far i have bought a set of rear shocks, carb, rear mudguard, points, coil, condenser and a few other items from Re-mx.
I have also bought a huge heap of OEM nuts, bolts, grommets etc from Partzilla.
I got some of my decals from Fastguystuff and the others from re-mx and partzilla.

The K1 is now ready for the powdercoaters.  I am sending the frame, airbox, pegs, peg mount, bash plate, seat base and a few other nick nacks all to be done in gloss black. I have stripped the paint and buffed all the parts. The swingarm i am doing myself in 2k gloss black. This is so i dont have to get the rubber bushes removed and replaced.  I did it once on a similar swingarm and it took the shop about an hour and a 10 tonne press and new bushes.

As usual, there is more work involved when you get pulling them apart.  I now want to strip the wheels, buff the hubs and replace the spokes.  This is still only a basic rebuild, but i want it to run and look reasonably smart.

I have also been playing around with various techniques to buff the engine.  Its not perfect and not oem, but it looks respectable and gives the bike a bling factor. So, i will have the rubber gray paint, oem style decals, white front oem plate etc.. but will have polished engine covers and hubs.

Bits i gave a quick buff and polish today... one of the brake plates hasnt been done yet.  If you have a look at previous pics, you will see the sad state of the covers..



Some of the stuff thats going off to the powdercoaters.. mixed in with some of my YZ125G stuff...






Offline Big Scotty

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Re: New XR75 K1 1974 Project
« Reply #24 on: October 04, 2017, 08:17:13 PM »
Got a rebuild kit for the carb coming,will give that a go and see what happens,fingers crossed
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Offline 80-85 husky

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Re: New XR75 K1 1974 Project
« Reply #25 on: October 04, 2017, 09:07:34 PM »
turn the fuel off and start kicking, if it fires, its leaking into the motor when the tap is on.

full throttle, kick like crazy or push it.

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #26 on: October 05, 2017, 03:00:36 PM »
Hope the carb rebuild kit works out. When i eventually rebuild the bike for show, i will put the stock carb back on.  I just want it to run hassle free, and the Re-Mx carb works well, looks the same and was cheap enough.

I got up early and pulled the forks apart.  I dont think they have ever been apart in 43 years.  There was just a brown sludge in there and everything was dirty, worn, rusty and in need of an overhaul.  I put degreaser and paint stripper on the legs and washed everything down.
They are easy enough to strip. Pull the dust cap to reveal a circlip. Pull the circlip and then pull the top tube from the bottom. Then just remove the spring and seal etc.
I gave everything another degrease and clean up.

Next was a nice polish and buff of the bottom legs. Cleaned the chrome on the sliders and began reassembly.
I had new Honda OEM seals to go back in, and a few new drain bolts and washers.

I reassembled everything using 110cc of 15W fork oil in each leg.  The forks now look and work pretty good.  Wish people would take  better care of their stuff.  This old girl certainly needed a birthday.  Luckily Honda makes things pretty good quality so the original parts last.



Cheers,


Offline 80-85 husky

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Re: New XR75 K1 1974 Project
« Reply #27 on: October 05, 2017, 04:44:41 PM »
lucky the tubes wernt pitted badly. looking nice and shiny... i got passed in my first race on my Gemini Boss 80 by a k1, thought it was the bike to have...i didnt have the dough >:(

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #28 on: October 05, 2017, 07:38:10 PM »
Hey Husky, the tubes aren't pitted, but there is a small patch on each leg under the dust cover that has had the chrome worn away smooth.  Hope this doesn't affect the seals too much. Yep, the XR sounds like it was a bargain in todays dollars, but i bet back then they were quite expensive.
Haven't seen the Gemini Boss, but i have a pick of the Gemini Fuji from the same era...



I am going to repaint the tank. Have the 2k paint and decals.  Have to remove a few minor dings and prep everything. I have measured up the location of the decals.  Funny thing is the left and right seem to be about 5mm different from each other.  Maybe the dude in the line that put the stickers on only had to eye them in....



Cheers,


Offline Big Scotty

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Re: New XR75 K1 1974 Project
« Reply #29 on: October 05, 2017, 08:02:59 PM »
Gray alex
My forks were worn in the same spot but really badly,one has a slight bend as well,I bought brand new ones from re mx cheaper than having my old ones rechromed,they look well made and fitted perfect,time will tell if the chrome is any good
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Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #30 on: October 05, 2017, 08:20:20 PM »
Big Scotty, i just went over to Re-Mx and saw the tubes.  Great option for the future. $229 for brand new tubes, plus a full kit of seals, caps, washers and bolts etc included.
They also do a full chain and sprocket kit for $50.  You could spend a fortune there. 
In fact i have.  I just remembered i bought the seat foam and seat cover, as well as all my other bits. I bought a beat up old Haynes manual for the 73-76 XR for $20 and its actually not to bad. Its in the same condition as the bike, so they kind of go well together, but there is heaps of good info on rebuilding everything.

Offline Big Scotty

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Re: New XR75 K1 1974 Project
« Reply #31 on: October 11, 2017, 07:28:59 PM »
Well my little girl lives,pulled the carby apart and put a kit in it,also found one float had a pin hole in it,found completely by accident,put a new genuine float in,started first kick,idled,yeh.20 minutes tearing around the yard grinning ear to ear,never went that we'll ever.next project get the 125 Suzuki quad going????
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Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #32 on: October 11, 2017, 08:51:12 PM »
Very well done.  The little XR's are great fun eh!! Nice that its running like a ripper again.  Just took a simple carb kit and new float...(lucky you spotted the hole).

Post up a pick of the old girl if you can.

Cheers,


Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #33 on: November 17, 2017, 04:07:48 PM »
Got all my parts together and they have gone to the powder coaters together with my YZ125G frame.  All to be done with a zinc prime and gloss black powdercoat. (pic below is various G and XR components)



Working on the engine this afternoon.  Have to make a special tool to get the oil pump/cleaner thingy off, so i can get the clutch off...

Have all the parts now to rebuild the wheels, so hope to get them together over the weekend...

Cheers,


Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #34 on: November 17, 2017, 07:06:04 PM »
Had a bit of time this arvo, so i hooked into removing the gear shaft. The gear shift had been welded on and the splines were knackered, as well as the oil seal blown.
First off was to remove the oil pickup filter thingy. You need Honda special tool #somethingorrather.. but to get around it, i just ground 4 notches in an old socket.  I also needed Honda special tool #costsalotamoney.  This is a an 2c piece that i jammed inbetween the gears to stop the rotation of the engine.  Its copper, so doesnt damage anything (except the 2c piece).
This all worked a treat and off came the oil thingy, the clutch, a few other doohickies and then the gear shaft just pulls straight up and out.

Thats as far as i got, as i am using some of my special ally welding wire to fix a broken footpeg mount using a propane torch.
We will see how this all works out when i try and fix it tomorrow morning with a hangover...

Pic below showing numerous Honda special tools and techniques....


Cheers


Offline TT5 Matt

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Re: New XR75 K1 1974 Project
« Reply #35 on: November 17, 2017, 07:20:56 PM »
U can buy a double ended chinca copy of the Honda special tool for 12 or 13 bucks on delay posted to your door

Offline Mick D

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Re: New XR75 K1 1974 Project
« Reply #36 on: November 17, 2017, 08:35:19 PM »
U can buy a double ended chinca copy of the Honda special tool for 12 or 13 bucks on delay posted to your door

Bit late now Matt,,, but good tip for punters planning a job soon to come  :D

That thing you are calling a "oil pick up thingy"  ;D ;D ;D ,,, sorry can't help it Alex  ;D  , it is a
"centrifuge"  and all that grey paste is the worn alloy,,, like most likely your head camshaft journals
that are non-ferrous and won't collect on a magnetic drain plug.

Seriously great innovation to collect "heavier" (waste) from the about to be recycled "lighter" SG 8.5 to 9.5 lube blood.   
"light weight, and it works great"  :)

Offline Mick D

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Re: New XR75 K1 1974 Project
« Reply #37 on: November 17, 2017, 08:38:58 PM »
Hey and great to see something interesting on OZ vmx again mate...


Ps; I hope your grandchildren don't look back in years to come and see what you did with their
Rare and collectable soft copper gear lock  ;D 
"light weight, and it works great"  :)

Offline TT5 Matt

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Re: New XR75 K1 1974 Project
« Reply #38 on: November 18, 2017, 02:31:42 AM »
The tool would be for when it's put back together,from the pics it looks like the home made socket tool has done a lot of damage to the nut which I've seen a lot of when farmers used to do their own repairs to there bikes and use lots of silicon on the home made cornflake box clutch cover gasket resulting in blocked oil gallery ‚ seized cam and stuffed head

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #39 on: November 18, 2017, 09:44:11 PM »
Hey Mick, yep the centrifuge does work, as there is a lot of old crap built up around the edges.. but the later XR75's didnt have one. 
I will keep an ear out for the Chinese version of the special tool Matt.  The nut is all good and i can modify my special tool to fit a little better.  I would of got a proper tool, but didnt realize i needed one until i was almost ready to go.

Took two steps backwards today.  After some mucking around, i have to take the motor up to Pipe King and get him to repair the ally lugs that mount the footpegs.  It needs a decent repair job.  They are all stripped, broken and munted.  Hopefully Pipe King can do as good a job on the mounts as he does on his pipes.

Next one was the wheels.  The original spokes were cactus and i had to cut them off.  I got a set from Thailand that i thought would go nicely on the build. 
Unfortunately, either they dont know that there are inner and outer spokes, or they sent me all inners.  I tried to get a bit of extra bend on them, but the bend area also needs to be longer to get around the thickness of the hub.
I have dropped Vintage Avenue and email with the pic below. Pain in the arse. 
It can only go 3 ways... He sends me the correct bend spokes..... he gives me my hard earned dosh back...i get a new set of OEM spokes from Partzilla at $2 per spoke/nipple.




Cheers,

 

Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #40 on: November 19, 2017, 02:13:55 PM »
Got up before the kids this morning and did a little prep on the body work.
The plastic mudguards got a rub back and then some plastic primer adhesive followed by some primer filler.
The tank and side covers got some dents removed, followed by a rub back and some etch primer followed by primer filler.

Now to find all the small imperfections and fix them up, followed by a good rub back and then some more undercoat, base coat, clear, decals and clear again... (2k clear to  make it fuel proof)



Cheers,


Offline alexbrown64

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Re: New XR75 K1 1974 Project
« Reply #41 on: Yesterday at 11:07:36 PM »
The rubber gray paint is supposed to match perfectly with Kia Sage Green.  Either my paint place mixed it up wrong, or something isnt right.  I painted all the panels with my Sage Green and they came out way to dark. Its a nice metallic grey, with a greenish tinge, but quite a few shades too dark.
I have also read on here that Hyundai Smoky Gray is a perfect match using a spectron analyzer. I will take some pics, panels and info down to the local paint place tomorrow and get it sorted.  Besides that, the panels look pretty good considering their age. Its only the base coat, so should be able to shoot straight over it when i get the paint correct.

Cheers,