By Dave P
Bought a used 4x4, engine runs. Tried rebuilding both pulleys. Ended up buying a transmission pulley system. The new one is aftermarket. The old one wallowed out and fell off.
The new one seems not to have enough splines inside. Seems like it is freewheeling. When it revs up and gets smaller pulley diameter, does it jump on the spline shaft? The driver pulley on the engine gets larger when it revs up. Had to make a pvc collar for the belt to sit on in the grove. No parts for sale on this pulley. Is the belt supposed to sit at the bottom? There must be a trick to get the belt on. Any ideas?
Thanks Dave in Florida
Hello everybody. I just tore a Yamaha apex snowmobile apart and I’m about ready to start fabbing up the mounting system for this thing. The Yamaha was in a stand alone setup. The gearbox was hard mounted to the chassis with the engine on four rubber mounts and that’s the way I’d like to build this too.
I ordered the secondary clutch from STM but it hasn’t arrived yet. The Yamaha secondary slid about 1/4” axially and I’m assuming that was to tolerate the fluctuation from the engine moving in the rubber mounts because of torque. I don’t believe the stm clutch has that slide action.
So my question is if I was to hard mount the rzr gearbox and leave the apex engine in its original mounts would the fluctuation from the primary under torque be bad enough to make the belts too far out of alignment ?
I’m not a fan of hard mounting the two together like Polaris does due to no ability to adjust the clutch alignment and the apex is sitting with fresh mounts installed in my garage as it sits. If I went with the rubber mounts that it already has I could be fabricating tomorrow. I’ve seen the kits available and I’m not paying that kind of money. Everything I need to fabricate this is sitting in my garage already.
Oh and the speed sensor. Anybody have to mess with this yet ? I have to assume the ratio from the apex gearbox and the Polaris gearbox are different. There’s no way I’d be that lucky
By Charles Hines
I have a 2022 Coleman 400 utv. I have added a heater with a 3 speed fan. I notice that while running with nothing on, the battery voltage gets to about 13,7 volts when funning at speed. If I turn on the lights, the voltage drops to about 12.3,if I turn on the heater fan with the lights on, the battery light will come on. I have replaced the battery with a higher capacity one and have replaced the regulator/rectifier, both have made no difference. I have measured the ac voltage at 22 vac at idle across all 3 phases, so the stator is charging. I have never had any issues with not starting or running poorly due to low voltage. Just wondering if there is anything I can do to increase the voltage from the regulator or is this just a underachieving system?