STM Powersports ATV UTV Helix and springs explained

This video is intended to help with the understanding of springs and helixes to select, for what application and why.

[@ericdowney3716]

You know your stuff. That was the most detailed explanation of primary and secondary clutches,spring and helix I’ve ever heard. I learn a lot today. Thank you

[@swampedlife9706]

Point on thank u

[@leiladaquil6587]

Movaeble sheave as it moves outwards,the groove angles determine how much load the compression spring will compensate,the steeper angle the groove has,the lighter load a spring can give,thus translate to torque.

[@elpasocleaningsolutions8]

excellent and clear explain

[@kevinhumphrey932]

I purchased a 2013 maverick 1000r and it has this clutch set up my question is could you help me identify it and possibly tell what I need to know about servicing it

[@dalle5840]

What modifications do you recommend to get as much of a slow throttle lead in as possible? I can't Reverse my 850 XC without crashing into things because the throttle is so direct and binary.

[@collinolson3027]

Do you need to have a Teflon bushing in the secondary?

[@slickrockdrifters]

Hello..what’s the best way to get the bearing ring out?

[@jasonbueckert575]

Hi great video. I just bought a 2013 commander 800 and found it has a stm secondary and a modded oem primery running 29” outlaws. The stm is a 40/50 hoping you can give me some info on the setup this guy had made on this machine.

[@leiladaquil6587]

May i ask is that the drive pulley unit?

[@FloridaOffRoad]

Need help! Just installed stm primary and secondary and my secondary spins with the primary .. Which isn’t normal … help please

[@ryanhardin5166]

(2015 XP 4 1000 bought used) I have full encapsulated helix with Gen 2 rollers(second from right in video, don't know angle ) with Gold spring secondary(no fin), and I think a R3p primary (purple or maroon spring cant tell). What would you suggest the best set up for Arizona trails/desert/hill climbs/dry river beds? I am running 30" tires roughly constant 500lb of riders weight.

[@maxfoour2376]

Hi question for you ! With a polaris ranger 570 with snow tracks , do you put a stiffer or a softer spring in the secondary clutch ?

[@hichamchahrour498]

Is stm clutchs fit on STELS 850 Rusian atv?

[@kylesmith820]

Need a better video explaining on primary clutch on can am outlander weight and spring set up

[@marcaldwinpulido3051]

Hi how to order

[@roberthughes2687]

Changed mine to a non engine braking and the belt started rubbing the case

[@C8TheGreat214]

Said a whole bunch of nothing at all

[@kylegohawks8604]

As a DIY the info on stm is awful

[@yerbeilisready8562]

Its like you understand it, but are too drunk to articulate it.

[@jonnyappleseed190]

I'm still f kn lost and I'm pretty well mechanically inclined. 🤣