Freestyle the lightest flywheel ever!

munki63

Epoxy is my duct tape
Location
Canada
lol, nice have you run it yet? If you havent you might want to make sure its balanced
 
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Your going to have to check on the flywheel often to check for cracks. You have to think about what happens when the crank accelerates or winds up then stops abruptly such as when the pump loads up then unloads as your going accross the water. The center of the flywheel will move then the outer mass will play catch up and vise versa. Not trying to be a downer but be carfull.
 

Waternut

Customizing addict
Location
Macon, GA
I think you've overdone it man. You also hogged out your spokes backwards. Should've left the most meat and the slowest transition at the inner radius and not the outer radius. This would've made the fatigue and the rotational weight better. If you used a CNC machine and did everything symetrical, I would think the balance would be close. Balanced or not, those spokes aren't going to last. Think of holding a brick with a pencil...it'll work a few times but then the pencil will snap.

If you do decide to run that flywheel, I highly recommend you inspect it closely at the end of EVERY ride. Look really closely where I've circled.
 

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D-Roc

I forgot!
but we are all curious right? hehe, it won't hurt any of us for him to run it and we get to learn something. you cut it, you posted it, now you gotta run it!!!
 

DangerBoy

Runs with scissors
Site Supporter
Location
Rincon Beach
You also hogged out your spokes backwards. Should've left the most meat and the slowest transition at the inner radius and not the outer radius. This would've made the fatigue and the rotational weight better. If you used a CNC machine and did everything symetrical, I would think the balance would be close.

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Really Guys ? other than the above comment Which is true, I dont think he did a bad job.
The outer diameter of the flywheel is doing no work after the Bendix disengages. Remeber this is not a charging flywheel, and he lightened the ring gear, the mass that is farthest away from the center has the most effect. also the lighter it is, the less balance means, as such less effect on the bearings

I would have cut 8 windows instead of 4 and put the thicker webs at the bottom, other than that, provided that the alloy and temper of the aluminum is correct, I would run it

that said I would not expect the motor to idle well at all and probably vibrate like a mofo under 4000 rpm

Db
 
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I have not ran this flywheel yet and it will probly be awhile before I do (broken leg).Ill admit that after I cut it i wish i would have left the spokes a little thicker but where the thin part is the fly wheel is alomst 3/4" thick and where it gets wider is about 1/4" so I think it does stand a chance of holding up but I also know that it might not, and I will be sure to keep an eye on it.I alos tryied to remove the materail equally and it was done on a cnc lathe with live tooling and I indicated it in within .001 before I ran it so it should be fairly balanced still.After seeing all the faith you guys have in it though I am thinking i will try it on a diffrent motor first (the pic is on my xs 1000) because I would hate to ruin those cases
 
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