Messages

16

Wanted / MX125A /175A or YZ125A frame

« on: November 14, 2018, 02:03:57 PM »

Hi All

Looking for YZ125A or MX125A frame. (with swing arm if possible) Serial numbers start with 401 or 402.

Also looking for other bits for above if they are out there.

Thanks in advance.

Peter B

17

Wanted / Re: Yamaha AG100 front hub (complete) Wanted early 70’s

« on: November 14, 2018, 12:26:02 PM »

I'm almost 99% sure this is the same hub as AT1 to DT125's and CT1 to DT175 (pre 75). And to go one step further, I think that's the same hub as a TTR125 small wheel.

https://www.cmsnl.com/yamaha-tt125r-tt125rc-2000-y-usa-california_model10827/hubfront_2482511110/#.W-t4zuJxWUk

You can still get them from Yamaha! or other sites

https://www.ebay.com.au/itm/YAMAHA-MX100-MX125-MX175-DT100-RT100-FRONT-HUB-O7/360378350812?hash=item53e8393cdc:g:pSQAAOSwGvhUEJRr:rk:17:pf:0

Peter B

18

Yamaha / Re: Can a DT1MX race in Pre 70 classic motocross?

« on: November 04, 2018, 08:32:09 AM »

The best thing about any of the DT1-DT3 and RT1 -RT3 (MX as well) is that all the parts are pretty much available and most are interchangeable (even with later models). However con rods and pistons are different on the DT1.

In the AT1M, AT1MX, DT1MX and other "M or MX" variants they had different ratios in the gearbox, carby, pipe, small changes to cylinder and head. There are other minor changes also which you can find.

I run an RT3 bottom end in an RT3 frame, piston port cylinder, MX250A gear set (fits straight in), YZ250 clutch pack (extra plate), and a YZ400E stator and CDI. It's all pre 70 legal.

If you want the genuine DT1MX you have to chase the case numbers as Ian said. The GYT stuff is like rocking horse poo. But worth looking for just good luck finding it!

Peter B

19

For Sale / Re: Wiesco Piston 83 84 XR500R Piston Kit

« on: April 09, 2018, 08:37:35 AM »

There are to many differences for it to work in earlier XL.

Pin is different, bore and stroke so the piston top to pin will also be different.

https://drive.google.com/open?id=1Q-SYTJ493_icfLUJDkR97-RV99OYdbJk

Peter B

20

Yamaha / Re: YZ100C/D YZ125X Wheel Spacers

« on: February 21, 2018, 06:17:49 PM »

These are the other models that have the same rear wheel spacer.

http://www.boats.net/parts/detail/yamaha/Y-90560-15312-00.html

Peter B

21

General Discussion / Re: Trail bike, (pre 93), 500cc to 650cc MUST have electric start. Suggestions?

« on: January 12, 2018, 11:25:16 AM »

The Belgarda TT600E in itself wasn't a bad bike except just heavy!!!!! They were just border line trail bikes and more road orientated. I realise it might be younger than you 1993 limit. The TT600R was the better option.

What about putting a Belgarda 600E motor into the earlier (92 or 93) TT . (From what I have just read it fits!)

http://www.dirtbikeworld.net/forum/showthread.php?t=68803&page=2

The electric leg option is starting to look good for my XR600. I've had them since 1994 and I would hate to part with the current one but the thought of kicking it on the side of a hill just doesn't do it for me anymore.
Peter B

22

Yamaha / Re: dt1 question

« on: December 08, 2017, 11:27:31 AM »

Hi Kenny. You should stick with the stock DT1 barrel. The Reed cylinder has a different rod length and head?? so stick with what you have.

The tank and front wheel are classic DT1 stuff and the pipe heat shield seals it for me. It is a either a 70 or 71 model. (1968/69 had a square section swing arm)

I have attached a link for a photo. (not sure if it will work as I haven't posted anything with photos for a while. ( Thanks to Vandy for the original photo)

https://imgur.com/2iAzhzS

A good seat base is the hardest thing to find and the early ones are smaller than the DT2/3 I think. If yours is in OK nick then live with it. Clean it up, fix the rust and strengthen on the foam side.

Hot up tips and there are quite a few, RT1 carby, small porting clean up, complete ignition off a DT250/400 from 1977on (Stator, fly wheel and cdi needed). YZ and IT also fit but good luck finding one and no suitable lighting coil! All bolt straight in and give you almost total reliability. (The charging circuit from the lighting coil goes straight into old harness).

Put the engine and frame numbers up. That will clear any questions.

I'm in the middle of a DT3 rebuild for vintage plate rego so happy to share information.

Good luck with it.

Peter B

 

23

Tech Talk / Re: dt or it175 cylinder sleeves?

« on: November 05, 2017, 04:18:44 PM »

If it's just a blank sleeve with a bore similar to a DT175 then try one of these. Cheap with no port holes. (Not sure of quality but maybe it's worth purchasing 1 to see if the experiment works!) A workshop with a good boring machine will get the cylinder to fit.

https://www.ebay.com.au/itm/YAMAHA-RD350-LINER-SLEEVE-FOR-CYLINDER-BARREL-FOR-RD-350-RD350-64MM/292288608231?hash=item440dc237e7:g:uQ0AAOSw9GhYmzyS

Regards

Peter B

24

Tech Talk / Re: dt or it175 cylinder sleeves?

« on: November 01, 2017, 10:34:01 AM »

Hi Twinrock

I contacted L.A.Sleeve about 3 months ago looking for similar parts. All prices in US.

https://www.lasleeve.com/tech/catalogs
 
1977 YZ400 sleeve - YA765 is $275.00.
IT175 (D, E, F) -Cost on the YA649 is $325.00.
1974 -76 YZ125 - YA333 is $250.00.
Postage is approximately $69 to $89.

Thank you, 
Dave @ L.A.SLEEVE
562-945-7578 ext.232
dave@lasleeve.com
 
Plus the fitting of the sleeve.

Good luck and Rgds
Peter B

25

Tech Talk / Re: Sloppy 34mm forks

« on: October 30, 2017, 12:44:10 PM »

I will have the fork legs machined and these inserted in my RT1 racer over Christmas.

Any good machine shop should be able to do it!

http://www.ebay.com.au/itm/38-1006-ALL-BALLS-INNER-FORK-BUSHES-34-7-X-36-6-X-19-8-2-PCS/161348133783?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

If I had a half decent lathe I'd have a go myself. Can't be that hard!

Peter B

26

General Discussion / Re: Technical help needed for 2 stroke outboard from the brains trust

« on: October 18, 2017, 08:36:29 AM »

Sound odd but have you checked the fuel tank vent?

Peter B

27

Yamaha / Re: Yamaha DT 322 article

« on: October 09, 2017, 01:08:25 PM »

Like OTH, I can only open the last one also.

I would really like to see the articals as I have several 250 / 360 motors and that sounds like a great challenge!

PS - your other posts the photos done work. SOS Lukeb1961!!!!

Peter B

28

Honda / Re: 83 Honda XR500 Conrod Kit Unavailable

« on: September 01, 2017, 09:18:48 AM »

XR's Only in US have the big end bearing kit if you can find the rod. Plus other kits. I used them a few times and their mail service has been very quick.

http://www.xrsonly.com/catalogsearch/result/?q=rod+kit

If you contact them they may have a supplier for the rods.

Peter B

29

Wanted / Re: IT400E rear wheel

« on: July 28, 2017, 09:28:37 PM »

Hi Tony

Any one of these will fit going by the hub part number.
 
1974 YZ250A REAR WHEEL
1974 YZ360A REAR WHEEL
1975 MX250B FRONT WHEEL
1975 MX250B REAR WHEEL
1975 MX400B REAR WHEEL
1975 YZ250B REAR WHEEL
1975 YZ360B REAR WHEEL
1976 IT400C REAR WHEEL
1976 TT500C REAR WHEEL
1976 YZ400C REAR WHEEL YZ400C
1977 TT500D REAR WHEEL
1977 YZ250D REAR WHEEL YZ250D - E
   
1977 YZ400D REAR WHEEL YZ400D E
1978 TT500E REAR WHEEL
1979 IT250F REAR WHEEL
1979 IT400F REAR WHEEL
1979 TT500F REAR WHEEL
1979 YZ250F REAR WHEEL2
1979 YZ400F REAR WHEEL
1980 IT250G REAR WHEEL
1980 IT425G REAR WHEEL
1980 TT500G REAR WHEEL
1981 TT500H REAR WHEEL

Should give a bigger field to pick from!

Peter B

30

Yamaha / Re: Semi-budget muckaround bike/nostalgiamobile, DT175G

« on: June 30, 2017, 06:05:57 PM »

I've used this guy for a few times for DT stuff. Call him in the morning and I get the stuff the next day in Sydney from Brisbane. Parkes may be a little slower.

http://www.ebay.com.au/usr/jono794

The humble DT175 has possibly put more smiles on young riders than anything else. Before Girls!!!!

Call him and he will drop the price because of Fleeeeebay costs.

Peter B