custom drive shafts??? anyone
 

I looking for some ideas on drive shafts, after breaking the roll pin on the cub. I just have to much weight and force for that little pin to hold up to. I hit something, ( edge of the concrete ) and there I sat, and she don't push real well. I was thinking of a love-joy or u-joint set up. so give me some ideas, thanks

Maybe adding some shock absorbing capability will reduce pin breakage.

Possibly the rag joint out of a QL will absorb some shock.

The steel on steel of the 1x8 style Cubs' is pretty unforgiving if you add enough weight to the back of the tractor!!

LoveJoys' are pretty low HP compared to this application, when considering how that drive shaft flops around!!

I'll also vote for the QL driveshaft...that will likely take care of your problems.

I agree with Matt.

Make that three

Check out this link:

cubfaq.com/DK%20IHCCmods.pdf

"Dave Kamp's magic book of International Harvester Cub Cadet Modifications

INSTALLING THE U-JOINT DRIVELINE ... Cub Cadet Modifications MAKING U-JOINT …

WHAT IS THIS 'MODIFICATION', AND WHAT PROMPTED THE DESIGN? First Answer: necessity. These darned pin-couplers worked, and most are still in service, but they wear and fail at what I consider to be a 'consumeable' rate. Frankly, I hate consumable parts.."

This would be the custom modification to do.

That doesn't really solve the issue here, though...unless the trans input shaft is modified, that U-joint must still be connected to the input shaft with a spirol pin. U-joints will not absorb the engine's torque pulsations like the rubber discs in the QL and later driveshafts will, so it would still likely hammer them to pieces.

I agree with Matt as far as the rag joint but I also think you may want to cut back on the weight on the back end. You may have just a tad tooooooo much traction. If it slips a little easier you won't break as much stuff.