UL flywheels

[Jerry Wieland]

I think someone just paid $271+ for a set of junk UL flywheels. Jerry

http://www.ebay.com/itm/Original-Har...vip=true&rt=nc

[T. Cotten]

Your right, Jerry,

That was probably way too much. Especially with shipping?
But if the punch marks didn't put any cracks in the tapers, they could be saved.
It takes patience, and some old pins, but power-lapping can true up damaged tapers: http://virtualindian.org/10techfly.htm

I suggest lapping all tapers no matter what.

....Cotten

[Rollo]

Just trying to learn what you see that makes these junk. They look good to me but that is why I want to know what to look for so I don't make that mistake myself. I would assume it has to do with the holes and tapers?

Tom (Rollo) Hardy
AMCA#12766

[Jerry Wieland]

Tom First thing is the crankpin taper looked big to me so I brought the image closer from the inside of the flywheel and do believe they have been stroked by offsetting and boring a larger taper like the 1941 and up OHV's use. The normal concentric shoulder is 'egg shaped'... and as Cotton mentioned the peen marks around the sprocket and pinion shaft shoulder.

Jerry

Just trying to learn what you see that makes these junk. They look good to me but that is why I want to know what to look for so I don't make that mistake myself. I would assume it has to do with the holes and tapers?

Tom (Rollo) Hardy
AMCA#12766

[T. Cotten]

Now I see it Jerry!

Doesn't mean they couldn't be used, but certainly not worth investing that much...
But I think everything is inflated.

....Cotten

[tfburke3]

Thanks Tom for posting your flywheel taper service methods.
I need to try and true up a chief sprocket shaft with .010 run out at the edge of the wheel.
I don't have a suitable lathe,but do have a milling machine with a 7/8 collet so I am going to try with the wheel just laying flat on the table.
Any thoughts appreciated.
Tom

[T. Cotten]

Tom!

The edge of the wheels isn't a good reference.
Malleable wheels often distort over decades around the pin. (attached; Yeah, its a 101, but dial indicators will show it in the same arc on most classic H-Ds, bulging outward.)

My method depends a lot on support from the lathe tailstock directly around the pin bore.
Doing it upon a mill table would be quite a tailspin.

Please rely upon your carefull observation and intuition, as only when the whole assembly is together can we seriously measure run-out at the pins.

....Cotten

[Rubone]

I believe those punch marks were to peen the thrust washer in place and likely had very little to no effect on the tapers.

[Jerry Wieland]

Yeah that was my thought too but a very tacky way of doing it. Now he only has to worry that the guy who offset stroked the flywheels knew what he was doing. Too many out of control variables for me. Jerry

I believe those punch marks were to peen the thrust washer in place and likely had very little to no effect on the tapers.

[wideglide38]

I watch that ebay seller "johngoober" often. He has a following and most items hit peak $$. Watch or follow these bead blasted knuckle heads and see how high they go! We should create a pool.....bet a 1$ and put in your estimated high bid and closest wins kitty after auction closes! I'm in at $2,493.00 For the 2nd listing, I've been looking for a rear fender catch and was amazed how much this item pulled in.

http://www.ebay.com/itm/Original-Har...QAAOSwU8hY7ol7

http://www.ebay.com/itm/Original-Har...vip=true&rt=nc

[Rollo]

Jerry thanks for the reply. I was not able to super size the photos and get close up view and don't look at flywheels often enough to judge whether the holes looked correct. I did see the staking punch marks and thought they might be the issue but I agree with Robbie that unless they damaged the taper shouldn't have been too big and issue. Always learning stuff or at least trying to.

Tom (Rollo) Hardy
AMCA#12766

[tfburke3]

Thanks Tom.The assembly would true no better than .001 pinion and .005 driveshaft after deburring and light hand lap.
Hopefully the tailspin wont be an issue.
Thanks
Tom