BrokeStonedBiker Posted May 5, 2004 Report Share Posted May 5, 2004 I'd PM ya, but I figure I might as well post it... I didn't do the math, I just machined as much as I could off of it, and then weighed it. You could do it at your boss's work, a lathe is what you need. BUT, you also need an arbor. Can/do you feel comfortable cutting a taper? I can give you final dimensions. But machining a chatter free part is half the battle..... yeah that be kool. what should the final dimention be after machining it down? also what is an arbor? and what do you mean by puting a taper on it? you mean just a bevel? i can pretty much do anything on it with in .004. is that acurate enough? the stupid leath is a hair off so... but maching this down shouldnt be a problem i should be able to get it with in .002. and that do you mean by getting a chatter free peice is half the battle? whats the other half? getting it on/off? Quote Link to comment Share on other sites More sharing options...
BrokeStonedBiker Posted May 5, 2004 Report Share Posted May 5, 2004 also i immagine that this thing spins a million mph on the bike. that if its off a little. i dont know what the machine is called but some like, you but you spin it on the leath and find the dead center of it and put it on a fine point like an aul(sp?) and see if it ballanced, if its not dill a small hole in it till you get it right? i dont know what its called but.... do you do this to make sure it doesnt have a heavy side? Quote Link to comment Share on other sites More sharing options...
boonman Posted May 5, 2004 Report Share Posted May 5, 2004 The final O.D. is 4.840". The strip in the middle that gets left because of the timing tabs vary wheel to wheel, because mother Yamaha decided they wanted to affix the timing tabs to the wheel a hair off from each other from time to time...... Don't go anyt deeper than 4.840". Otherwise, you may hit the magnets.... That is a bad thing.. You can also remove material from the inner hub, on the outside of the flywheel. I believe the O.D. on that is 2.8" or 3.8". It will be readily apparent. Just don't hit the rivets. An arbor is what you mount the flywheel to. It basically mimicks the end of the crank. The taper is there, because that is the only way to make absolutely sure the flywheel is vibration free. You could chuck up on the outside of the wheel. But it isn't as precise. You will be close though. Quote Link to comment Share on other sites More sharing options...
BrokeStonedBiker Posted May 5, 2004 Report Share Posted May 5, 2004 just to clarify something. are you talkin about takin it off the sides of the flywheele or the diameter of the whole roundness of it? if you talkin about shaving the O of the wheele diameter size, that wouldnt make sence would it? dont you want to shave the sides of it? i never took it apart yet so dont know what exactly im lookin at. can imagine there over 4" think, but maybe im wrong. thanks for the info Quote Link to comment Share on other sites More sharing options...
boonman Posted May 8, 2004 Report Share Posted May 8, 2004 Off the outside diameter...... NOT the face.... Quote Link to comment Share on other sites More sharing options...
Meat Posted May 9, 2004 Report Share Posted May 9, 2004 heres a pic for ya stonedbiker.... Quote Link to comment Share on other sites More sharing options...
BadDad Posted March 9, 2005 Report Share Posted March 9, 2005 HHmmm... I guess I'll put this here. Can the runout of the outer stamped shell be .007" out of round!! ? I'm using a homemade arbor. Inside steel hub (next to rivites) runs true(.000) by means of starret dial indicator. Also should these be re-balanced after machining. And if so how ? Thanks Quote Link to comment Share on other sites More sharing options...
boonman Posted March 9, 2005 Report Share Posted March 9, 2005 It could be a little out. Is this on a stock flywheel, or a lightened one? Be sure that your arbor matches the taper perfectly. Quote Link to comment Share on other sites More sharing options...
chris642 Posted March 9, 2005 Report Share Posted March 9, 2005 do you think that this mod will increase wheel spin any? i am already having a problem with it so i woudnt want to make it any worse. this sounds like a real cool mod, especially with my bottom end dune port!! Quote Link to comment Share on other sites More sharing options...
boonman Posted March 9, 2005 Report Share Posted March 9, 2005 I have heard of some folks having alleged problems with wheel spin. I do not notice any on my bike. I feel the throttle response is more beneficial than any ill fated wheelspin. If you are having a problem with wheel spin, perhaps new tires may be in order? Quote Link to comment Share on other sites More sharing options...
PUSH THE THROTTLE Posted March 9, 2005 Report Share Posted March 9, 2005 do you think that this mod will increase wheel spin any? i am already having a problem with it so i woudnt want to make it any worse. this sounds like a real cool mod, especially with my bottom end dune port!! 335918[/snapback] Sounds like the solution is a -2 swinger if you don't have one. Mine charges out of the coners hard with the lightened flywheel, no traction problems. Quote Link to comment Share on other sites More sharing options...
BadDad Posted March 9, 2005 Report Share Posted March 9, 2005 wow thanks for answering so quick. It's a stocker and the arbor fits very well. I know it's centered because the inside hub runs true. It's just I couldn't beleive the shell could be deformed that much from factory. The timing tabs are not out of line either. Thanks What about balance ?? Quote Link to comment Share on other sites More sharing options...
toolman Posted March 9, 2005 Report Share Posted March 9, 2005 Just send it to boonman it not worth the hassle to do your self he has the setup and does great work and fast turn around at a bargin price for what he charges i will not do mine and I have access to the proper tools. This one of the best mod's going Quote Link to comment Share on other sites More sharing options...
Brian060 Posted March 9, 2005 Report Share Posted March 9, 2005 I had mine done by boonman, but he didnt lighten it as much as he normally does. I still noticed a difference. Quote Link to comment Share on other sites More sharing options...
bansheekid409 Posted March 9, 2005 Report Share Posted March 9, 2005 do it your self. lol i did mine. there is no need to ballance it like they do with wheeles on cars. if your true from the iner diameter you wont really be that uneven. i remember putting mine up on the leathe, did it all to the spec, shaved both the small circle and big one as far as i dared to go, and took .035 off the face too. took the thing off the leathe, i could have sworn it felt 3 pounds lighter. LOL its kinda like them mazda comercials (Zoom Zoom) Quote Link to comment Share on other sites More sharing options...
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