OzVMX Forum
Clubroom => Tech Talk => Topic started by: Doc on July 28, 2008, 04:02:07 pm
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I have an F11 sitting here with the most stubborn flywheel I have ever come across. I've just about destroyed my German made puller trying to get it off but she's stuck fast :o Anyone have any other ideas for getting them off. I've got to the stage now where a splash of fuel and box of matches is on the short list >:(
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600gms C4 plastic.... ;)
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i remember a torrid tale of a particually stubborn 185 flywheel Doc.
it required the combination of brute strength a carton of VB an enormous burp simultaniously with a window shattering fart
couple of tyre irons helped it aswell.
Keep working on it mate. I used the hot spanner , bent the centre bolt in a puller and soaked it for three days and it still wouldnt budge . ended up applying every method all at once and after the fourth shot and 14th ale a burp and fart off it popped. Unsure if I shat my pants from suprise but it came off .
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C4..I'll get onto my Iranian cousins :D
now to option 2 :-\ I may be missing one or two vital elements Pokey, the VB and the brute strength! I'll make sure I have a pillow stapped to my arse to protect the windows though! Good tip thanks!! ;D I've bent my puller shaft too and it really hurts! :'( fuggin' bugger eh! :D I've left it loaded with about a zillion lbs tension and everytime I walk past I smack it with the hammer, kinda feels good :P I bet if I left the nut off and rode it more than a klm from home it would simply fall off..and, take out the headlight of the Bently driving the other way..I can't afford that method ::)
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Give it a squirt of Lanoguard ( penetrating oil ) Brilliant stuff ....
2 tyre irons lanoguard & the use of the rattle gun was how I got the old Ts Fly wheel off ( and a shit load of the 4 letter stuff )
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yeah keep the pressure on it Doc and keep wackin it, makes ya feel good wackin the crap out of somethin when it isnt working right. I used an entire can of Inox on the 185 flywheel . bastard wasnt machined clean on the taper so a little bit of rust had glued it all tight. Havnt tried that lanox as yet but we sell it at work
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I recently had a similar soul destroying experience with an RT1 engine that had been under water at one stage of its life. I tried for about three days, used heat, big hammers and small tyre irons and small hammers and big tyre irons. In the end I gave it a whole spray can of Lanolux or whater brand of lanolin spray it was, and left it for about three days in disgust. I then called my mate Stan over for him to have a go and before he put the puller on for his attempt he gave the flywheel a jiggle with his thumb and forfinger and the bloody thing fell off in his hand.
Bottom line Doc....You need some Lanolin spray, a couple of days and my mate Stan.
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Serious bit here Doc, I used one of those"freezing" sprays recently on a stuck Suzuki PE one . Resulted instantly in the stuck on magnets (pains in the bum!!) parts of the wheel falling off! I know these mongrels are to be treated with kid gloves so no undue force was being used. Now I don't have a spare PE 250 flywheel as I gave it to the bloke in embarrassment for breaking his. >:( Tim
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Thats the stuff Firko .... made by Lanotec - labelled Lanolin
Also great M/cycle chain lubricant .....reqiures bugger all compared to other products ;)
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Thats the stuff Firko .... made by Lanotec - labelled Lanolin
Also great M/cycle chain lubricant .....reqiures bugger all compared to other products ;)
Where do ya get it.
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where do ya get it!! :P used to be an ad on TV like that but I can't remember what for..obviously not Lonaguard or lanolin or annie lennox or something :D great stuff, seems the general concensus is some tpe of penetration formula and lots of patience..the first I can buy but the second I have no idea! :D soul destroying is completly accurate Firko, I just went and flogged it some more and I'll be back in the morning..I'd love nothing better than to wake up and it's fallen off onto the floor and it was all just a bad dream ::)
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We sell that and lanotech "No chukka" chain lube at work over at Geebung Doc, prolly be able to get it at a lot of places
OOps my bad. its Lanox by the Inox people we sell
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Here it is .. New product on LHS , old style RHS
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There is another option for removing reluctant parts on tapered or parallel spindles: heat or cold - you heat the outside part to expand and become looser, or cool the insde part to shrink and become looser - or both!
Heating with a flame is probably not a good idea with a flywheel (magnets don't like it and the coils inside don't either), but cooling the crankshaft is fine.
Bearing services sell a pressure can of a coolant for just the purpose. You can either spray it on (probably not all that effective since it would go all over the flywheel as well (and shrink that too), or you can wrap and tape a piece of rubber foam on the threaded crnak end and insert the nozzle into that and then slowly let the fluid soak the rubber foam. That will cool it and the crankshaft end and evenually freeze it into a nice lump of 'sort of dry ice' (about -40 deg from memory). If you sat or held a piece of metal or plastic pipe around that arrangement and applied a bit of heat to the flywheel from - say - a hot air gun (without getting any heat onto the slowly freezing crank end inside the tube or the magneto/stator coils inside), you should be able to loosen it enough to just pop off or at least break any rust bond enough to use the flywheel puller in the normal way.
I've had success with this method with a cast-iron pulley on a steel shaft and a couple of broken off studs stuck in an aluminium head.
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thanks all..tried a few things today..all of them excepting the levers and the cryogenics as the lever method brings back horrors from a past life :o And surprise surprise, it's still stuck fast >:( the puller now has it's own little indentations where it fits from pulling with all it's might, the end looks like a mushroom from me tapping it like a madman over 1 zillion times,the dog and neighbors hate me, my ears are ringing constantly, the shaft resembles a piece of twisted spaghetti though it somehow looks quite functional and artistic but the flywheel still looks brand new as if it's just been put on at the factory..hence this maybe muh problem..it's NEVER been orf!!! :o heeeelp!! anyone local got a really big-assed puller?? :'( Firko, what's your mate number!!
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;D ;D ;D ;D it's off!! The God of VMX has shown mercy on me! Thank you oh Great God Of VMX!! ;D ;D ;D
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yiipppeeee.
is it safe to ask HOW ?
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ive got one stuck on a xt 250 at the moment so how did you get it off doc
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errr..how did I get it off?? I left the puller on for 3 days, belted it to buggery for 2 days then today I tapped it lightly once and it just fell off :o ???
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There is a need for more people like you Doc, in the mining industry for time management. ;) ;D Good on ya.
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g,day that reminds me i have a fly wheel that i cant get off an xt 500 ! i destroyed one yamaha puller after soaking over night with inox tried heat still no joy so i thought i dont need the flywheel so i welded to 1/2 inch bolts to the fly wheel with a dirty big crosshead puller across the ends of the bolts. i heated the fly wheel red hot with the oxy GUESS WHAT its still on there 12 months later!!! as the fox said about the grapes theyre's no good parts left there any way. here's another tip my rt1 occasionally shears the fly wheel key with subsequent damage to the fly wheel & the shaft so i took a tip from briggs &stratton made an aluminium key and if the key shears presto no damage to the shaft or the f/wheel .cheers wally.
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well hopefully sheared woodruff keys will be history running the internal rotor but a good tip all the same Wally..the beasty is all ready now excepting the rear sprocket which Brent is kindly flattening and thinning for me ;D no race winner here but it shouldn't be too bad. I babble on about the converted trailies so I best be seen riding one :P..roll on August 9/10 ;)
(http://farm4.static.flickr.com/3087/2719300392_1513fd2d68_o.jpg)
http://farm4.static.flickr.com/3087/2719300392_1513fd2d68_o.jpg (http://farm4.static.flickr.com/3087/2719300392_1513fd2d68_o.jpg)
even tidied up under the ducktail as it's a pretty ugly void without a tail light :-[ I could never get rid of that ducktail as it reminds me so much of the Valiant Charger (and the Z9's from the same era) :D go the wog chariots!! :P
(http://farm4.static.flickr.com/3048/2719336894_111294af74_o.jpg)
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where do ya get it!! :P used to be an ad on TV like that but I can't remember what for..
Hey Doc, I've enjoyed this thread but I had nothing to offer on the 'how to remove' stuff - but I remember the ad you're on about.
It was for SUPA VALU shops (only in Qld?) sometime around 1975.
A really irritating screechy bloke on the telly and radio shouting, "Tins of Campbells soup for only 35 cents - Where do ya get it?! Bananas only $1.00 a bunch - Where do ya get it?!, shampoo..." and on it went!
Ring a bell?
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Nice bike Chris, all up to your usual high standard and low budget ethic.
I once pulled a flywheel off an RG 250 gamma that pulled the shaft out of the crank wheel with the flywheel still stuck onto it.
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:D that's the ad Wombat..I never remember where he'd get it but I sure remember where I wanted to shove it! >:( irritating even now..but eh, effective marketing obviously..I mean both of us remembered it!! ;) oh and even after all the effort I still don't have any tips to add for ease of flywheel removal..it either wants to come off or it doesn't and it will when it's good and ready and not a second before..simple as that ::)
CG..to tell the truth with all the banging I was doing I was worried either bearing damage, case damage, crank damage or some other unforeseen form of damage may ensure but fortunately the only thing that got damaged was my brain. Everything feels okay but I wonder. I had some sense to limit myself to a quarter pound engineers hammer with a shorty handle so as I couldn't get too carried away but yeah, I had a fleeting vision of the whole deal snapping the end off the crank and me shooting myself later the same night..only in the foot of course..I'm not that insane or excitable over a stubborn magneto..close but not quite :D
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Oh, and your bike is pure hornbag! Funny how the old trailies looked docile back in the day but now, with the passage of time and increased rarity, these old beauties are dead set sexy. :P
The Kwaka really looks the goods! :P ;)
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uh huh..I thought the old kwaka trailies were the ugliest thing God ever put guts into when I was 20ish or younger ;D Nowdays I think they look devine 8) next time you are stopped behind an old car at the lights, say an old Ford or Valiant. Sit back and take a good look. For mine, I have never looked close enough and after only glancing at them for 30 years when I now look at these models they have changed and have become very interesting and not quite as I remembered them. It's the same with the kwack, until I sat and looked closely I never realized what I was missing. Try the car thing, even works at Woolies carpark if you can find something old enough..'60's/'70's models do the trick, if it's slightly obscure to start with (say an EJ Holden sedan) than that's even better again and it will be a real eye opener. You have to take the time to stand and really look from a different perspective, not the usual side on or front veiw, veiw it from say the rear or it won't work. This is why I like to do it while following ;) thanks for the comments too :) if nothing else I do like them to sit pretty ;D
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Nice bike Chris, all up to your usual high standard and low budget ethic.
I once pulled a flywheel off an RG 250 gamma that pulled the shaft out of the crank wheel with the flywheel still stuck onto it.
i can just immagine the look on your face...would be classic!!! cheers wally.
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yesterday i was in my little shed trying to make some room and my stuck on flywheel was grinning at me so i said to my self "self have another go"..so i got my drill and drilled a hole next to the key broke three drill bits ,said that might do ,got my battered crosshead puller attached wound it up tight plus won or two raps wit a large hammer bingo of it came!. the taper on the shaft is fie. so i have some usable parts.cheers.