Author Topic: Crank play (Read 10507 times)

Polonda · « **Reply #15 on:** July 24, 2013, 08:55:08 PM »

Joe you got that thing split yet? No rush haha.

JoePA · « **Reply #16 on:** July 24, 2013, 09:57:18 PM »

It's apart!! Ok, I found the problem/s. The first thing is the bearings. They are worn out and not sure why. The second thing is the bearing is loose in the right side case. This is where the side to side play was coming from for sure and the bad bearings just made it worse. So new bearings and seals are a must but that right side I'm not sure. That bearing retainer stuff might work as the bearing didn't fall out it had to be tapped with a hammer. **** like this happens every time I'm broke!!! LOL

Polonda · « **Reply #17 on:** July 24, 2013, 10:01:23 PM »

I did not have good luck with the retaining compound. Worked for a couple rides and then broke loose. Don't think it's meant to be hammered on like happens in a motor.

Polonda · « **Reply #18 on:** July 24, 2013, 10:06:11 PM »

I honestly think the cases can only take so much over the years before they just can't hold the bearing tight anymore. Might want to see what it would cost for inserts vs a know good case half.

however if the crank was loose in the bearing it could of ruined the bearings and beat the cases. Of course the could of messed up the crank journals as well.

i know Pete does the inserts at Hybrid...not sure on cost though.

JoePA · « **Reply #19 on:** July 25, 2013, 07:28:33 AM »

Now I'm in need of bearings. Since the Hotrods crank is ever so slightly larger than OEM am I forced to purchase the machined bearings or can I get a standard OEM bearing to fit on the crank?

rsss396 · « **Reply #20 on:** July 25, 2013, 08:16:15 AM »

it does not take alot of sanding on the crank to make them fit properly or to sand the inner bearing race of one bearing.
Allot of people just run them tight and it should be OK but the slip fit on 1 side is something most guys squeezing every last bit out of their motor will do.

JoePA · « **Reply #21 on:** July 25, 2013, 08:44:29 AM »

Once again thank you for excellent info. With funds on extreame empty I'm going to throw new bearing in, loctite the one side and park it till I can figure out a better plan and get some extra $$

Thinking of throwing in a long rod crank i have in to see if the power is any different.

Polonda · « **Reply #22 on:** July 25, 2013, 09:14:56 AM »

You can use the standard bearings. They are just a tighter fit which makes for slightly harder assembly. Do you have a crank install tool?

JoePA · « **Reply #23 on:** July 25, 2013, 09:32:03 AM »

Polonda,
Yes, I have an install tool. its a TUSK but should work.

rsss396 · « **Reply #24 on:** July 25, 2013, 09:56:42 AM »

The Tusk crank tool is nice!

Polonda · « **Reply #25 on:** July 25, 2013, 05:30:11 PM »

Have the tusk my self. Buy some bearing retaining compound that is made for the clearance you have. Loctite has a coup
e different ones. Hope it last for you.

fearlessfred · « **Reply #26 on:** July 25, 2013, 07:02:24 PM »

hey joe I was wondering do the current bearing have a interference fit on the crank or do they just slide on

JoePA · « **Reply #27 on:** July 25, 2013, 08:29:48 PM »

The current bearing fit really well on the crank. You can't just slide them off and I did need a puller to split the case. So the inside diameter seems to be machined really well.

fearlessfred · « **Reply #28 on:** July 25, 2013, 08:44:07 PM »

good thanks for the reply

JoePA · « **Reply #29 on:** July 25, 2013, 10:57:38 PM »

Once again I want to thank everyone for their input as to what the crank issue was and how to fix it. It was apparent I had multiple issues but problem found. I hope this helps future member when they use the search button.