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New light weight flywheel in the making

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New light weight flywheel in the making

Old 02-16-2013, 01:50 PM
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New light weight flywheel in the making

This one starts out at 7lb 5 1/4 oz

I've been asked to take it as far as i can

Steel fly's first thing in the morning.
Attached Thumbnails New light weight flywheel in the making-ru-flywheel-start-wt-sm.jpg  
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Old 02-16-2013, 02:26 PM
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Damn Erik don't tease us!!
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Old 02-16-2013, 02:38 PM
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Do you expect to test the limit to the failure point?
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Old 02-16-2013, 02:55 PM
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Originally Posted by thetophatflash View Post
Do you expect to test the limit to the failure point?

Well , no .....
I DONT

Now the owner of this one might


No really, nothing to fail.
I'm not cutting on anything that can "fail" just the weight itself. in diameter and thickness.
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Old 02-19-2013, 05:36 AM
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Small update

Had an air line reel detonate yesterday in the garage Spent the better part of the day running around looking for a replacement air hose reel and took some time to update the 1/2 black pipe air run with a new filter.

Anyway..

Got started on the flywheel.
Of note, this is the first one I have had in my hands that did NOT have a factory balancing hole machined in the weight.
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Made the first few cuts last night.. will finish up this morning and weigh it.

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Old 02-19-2013, 06:22 AM
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Originally Posted by E.Marquez View Post
Had an air line reel detonate yesterday in the garage Spent the better part of the day running around looking for a replacement air hose reel and took some time to update the 1/2 black pipe air run with a new filter.
Erik, maybe you been visited by some gremlins at night
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Old 02-19-2013, 06:24 AM
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Originally Posted by E.Marquez View Post

Got started on the flywheel.
Of note, this is the first one I have had in my hands that did NOT have a factory balancing hole machined in the weight.
Naturally balanced
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Old 02-19-2013, 04:29 PM
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And we is done




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Coming in at 6lb 1/4oz
for a reduction of 1lb 4oz from the starting weight.

I have some ideas on reducing further, but will try them on one of my spares first.

This one gets boxed up in a few minutes and will be on it's way to the owner first thing in the morning.

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Old 02-20-2013, 07:04 AM
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On it's way home
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Old 03-11-2019, 12:16 PM
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Another rider enjoying the revs






started at 7 lbs. 4 oz. finished 4 lbs. 8 oz.
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Old 03-15-2019, 08:48 PM
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Eric, You did a great job on my flywheel a while back. I also removed the springs and "extra" gear from the anti-rattle gear to lessen the reciprocating mass a bit more. Didn't really notice a change, but that was 8k miles ago and why not? I kinda' like mechanical noise. Now I'm thinking Titanium bolts for the starter gear as well. Maybe a Titanium retainer nut for the flywheel as well. Is there any weight to be saved on the starter gear?
I just ordered a set of Titanium nuts and bolts for the engine cases, brakes, axles, forks, triple clamp Etc. As they say, "A gram saved is about $100 spent" LOL
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