Marathon Slipps Belt in Reverse

duwem · 06-19-2016, 07:54 PM

Any sort of load and belt slips going backwards.

Its a 1990 with 3pg engine. Replaced belt with a new dayco no improvement.

Has the heavy duty spring in the secondary clutch and climbs any hill in forward no problem.

Thoughts?

duwem · 06-20-2016, 05:51 PM

Ran with seat off. In reverse on hill Secondary opens all the way as does primary and then belt has no tension

cart around · 06-20-2016, 06:09 PM

Maybe broken motor mounts allowing the engine to move closer to the driven clutch in reverse.

duwem · 06-21-2016, 10:45 PM

Confirmed all mounts are in tact and tight, engine is not moving.

I put the stock secondary spring in and it works just fine in reverse. Did loose torque in forward though (23" tires).

Talking to a buddy, he thinks those tangs on the HD spring are preventing the clutch from working in reverse. Makes sense since that spring is from a 4 stroke kart and those clutches only spin one way since reverse is in the rear axle.

I talked to this guy and he has no problems to report going backwards with the mod. I copied what he did in this writeup:

http://krisdillon.com/buggy/

06-19-2016, 07:54 PM	#1
duwem Not Yet Wild Join Date: Oct 2015 Posts: 27	Marathon Slipps Belt in Reverse Any sort of load and belt slips going backwards. Its a 1990 with 3pg engine. Replaced belt with a new dayco no improvement. Has the heavy duty spring in the secondary clutch and climbs any hill in forward no problem. Thoughts?
duwem Not Yet Wild Join Date: Oct 2015 Posts: 27

06-20-2016, 05:51 PM	#2
duwem Not Yet Wild Join Date: Oct 2015 Posts: 27	Re: Marathon Slipps Belt in Reverse Ran with seat off. In reverse on hill Secondary opens all the way as does primary and then belt has no tension
duwem Not Yet Wild Join Date: Oct 2015 Posts: 27

06-20-2016, 06:09 PM	#3
cart around Test before replacing Join Date: Aug 2013 Location: Ohio side of the Pennsylvania border. Posts: 3,495	Re: Marathon Slipps Belt in Reverse Maybe broken motor mounts allowing the engine to move closer to the driven clutch in reverse.

06-21-2016, 10:45 PM	#4
duwem Not Yet Wild Join Date: Oct 2015 Posts: 27	Re: Marathon Slipps Belt in Reverse Confirmed all mounts are in tact and tight, engine is not moving. I put the stock secondary spring in and it works just fine in reverse. Did loose torque in forward though (23" tires). Talking to a buddy, he thinks those tangs on the HD spring are preventing the clutch from working in reverse. Makes sense since that spring is from a 4 stroke kart and those clutches only spin one way since reverse is in the rear axle. I talked to this guy and he has no problems to report going backwards with the mod. I copied what he did in this writeup: http://krisdillon.com/buggy/
duwem Not Yet Wild Join Date: Oct 2015 Posts: 27

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