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Author Topic: drive pulley  (Read 6131 times)

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Offline Johnson Mowersports

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drive pulley
« on: June 17, 2012, 01:59:57 am »
Why does my drive pulley keep loosening up? I have the 8 inch ec motor pulley and hub its loosen's up every time I put it on the track  I've used locktite but it still seems to come loose I never had this problem with my old motor but ever since we've put the big hoss on it never fails and its driving me crazy everytime it happens I think something is about to go on my motor. Is there anything  special you guys use to keep this from happening it would be highly appreciated. Thanks  :mad:
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Offline jerb

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Re: drive pulley
« Reply #1 on: June 17, 2012, 03:30:14 am »
i have used 1'' split locks on each side of pulley to help keep it in posistion
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Offline George Herrin

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Re: drive pulley
« Reply #2 on: June 17, 2012, 07:14:26 am »
Not sure I dont have that much HP.
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Offline Jim Knutson

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Re: drive pulley
« Reply #3 on: June 17, 2012, 08:17:33 am »
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Offline foolnhismoney

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Re: drive pulley
« Reply #4 on: June 17, 2012, 11:48:07 am »
If motor is not balanced you will have that problem also. Not sure what you got but throwing it out there
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Offline Johnson Mowersports

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Re: drive pulley
« Reply #5 on: June 17, 2012, 12:03:15 pm »
It doesn't move up and down it will loosen and rock side to side(left-right)
Motor is very well balanced never had any vibrations from engine
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Offline saltyAMF

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Re: drive pulley
« Reply #6 on: June 17, 2012, 12:11:11 pm »
you sure your not running a 1 1/8 hub on a 1 inch crank snout?  either that or yours is hogged out somehow...  teetering side to side means something is sloppy.   
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Offline brokemotor

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Re: drive pulley
« Reply #7 on: June 17, 2012, 04:30:49 pm »
When my steel pulley wollered out the keyway on the crank and pulley. I welded another hub from TSC to it. Also I use long set screws with jamnuts.
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Offline Johnson Mowersports

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Re: drive pulley
« Reply #8 on: June 17, 2012, 11:37:44 pm »
I'm going to pull the pulley and check the hub and crank to see if anything looks bad it shouldn't though its only 4 races old
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Offline cycloneracer

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Re: drive pulley
« Reply #9 on: June 17, 2012, 11:43:05 pm »
If the key way fell out and it spun on the shaft it is probably junk.

I use a bolt in the end of the crank with spacers to hold the pulley and key in.
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Offline more4les

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Re: drive pulley
« Reply #10 on: June 17, 2012, 11:51:07 pm »
Quote from: cycloneracer on June 17, 2012, 11:43:05 pm
If the key way fell out and it spun on the shaft it is probably junk.

I use a bolt in the end of the crank with spacers to hold the pulley and key in.

Ditto.

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Offline Johnson Mowersports

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Re: drive pulley
« Reply #11 on: June 18, 2012, 09:41:57 am »
I run a bolt and washer in the bottom of the crank too the key didn't come out the set screws just keep coming loose 
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Offline The Tank

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Re: drive pulley
« Reply #12 on: June 18, 2012, 09:43:36 am »
Quote from: Bookin 23 on June 18, 2012, 09:41:57 am
I run a bolt and washer in the bottom of the crank too the key didn't come out the set screws just keep coming loose 

I trouble with the set screws coming loose at one time. Now I just remove the set screws and use 2 aluminum split locking collars on top and bottom of the pulley to secure the pulley in place.
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Offline Johnson Mowersports

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Re: drive pulley
« Reply #13 on: June 18, 2012, 10:39:10 am »
Might try that thanks
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Josh

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Offline Tazz914

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Re: drive pulley
« Reply #14 on: June 18, 2012, 11:58:28 am »
josh, i got some permentant lock tide. i promise u it wont loosing after that
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