Speedwerks

[Old & slow]

Has anyone tried the Speedwerx clutch kits for 6-8 k ft? Are they a good kit, worth the money ?
HYPERSHIFT CLUTCH KIT // 2020-2021 M 8000 ALPHA ONE - STOCK PIPE

 

[BlueDevil]

Yes I have and they work great. Pulls hard and holds rpm well. Plus there springs are awesome

 

[Old & slow]

Thanks for the info , I am really surprised by the limited response. I would have thought SW would have been more popular.

 

[schaef_12]

I just put a speedwerx stage 2 kit on my 2020. I was surprised to find that the factory primary spring was broken under 250 miles. I have not ridden the setup yet, but I am looking forward to see how it works.

 

[kiliki]

Broke 2 in 1100 miles on my 2020.

 

[Live2ride777]

I wonder if a change has been made for 2021, considering the amount of broken springs on the 2020s

 

[Old & slow]

I just put a speedwerx stage 2 kit on my 2020. I was surprised to find that the factory primary spring was broken under 250 miles. I have not ridden the setup yet, but I am looking forward to see how it works.

I would be interested in any ride reports on your new clutching.

 

[schaef_12]

It is clear the the spring sticks and is not able to rotate while being compressed which leads to the spring breaking. I ordered Delrin washers for what I thought was the primary but alas they were for the secondary clutch. I have not been able to find any for the primary yet. But haven't looked super hard either.

 

[boondocker97]

I've broken a few springs in the roller primary I'm running on my Suzuki. I looked for some delrin washers, but didn't find any. I ended up getting these and put them in the end of last season. Not enough miles yet to tell if it helped out. https://thunderproductsclutching.com/product/clutch-spring-glide-washer-kit/

 

[BlueDevil]

Any increase in clutch shifting? Better up shift?

 

[boondocker97]

I was riding different locations/elevations/snow conditions every weekend after putting them in and also changed spring rate at the same time so I honestly can't say if they improved any of the shifting characteristics.

 

[sno*jet]

i been using thunder glide washers in my 17 for years. started with just one on the cover side iirc where i noticed the spring digs into the aluminum. noticed no increase in engagement rpm i would say it actually went down if anything. istalled one on the other end last season and that def. increased engagement just a hair which i like on the zuke. These are must have if your breaking springs. throw some titanium cover bolts in when ya do it!

 

[Sage Crusher]

Your changing the overall rates on the springs running them/and or the Delrin washers- just the nature of the beast. Is the stock spring called for in the stage 2 kit??- seems a bit that there would be a change

 

[sno*jet]

Your changing the overall rates on the springs running them/and or the Delrin washers- just the nature of the beast.

i disagree youre not changing the overall rate at all, just the preload. and in my case I believe the reduction of binding led to no change or even slightly lower engagement using just one.

 

[BlueDevil]

I agree snojet. Engagement whether it’s and increase or decrease should be the only thing affected.

 

[BBP]

The spring tension should increase equally across the entire shift. It's more noticeable at engagement since the spring tension at engagement is much lower than at full shift out.

 

[boondocker97]

The spring tension should increase equally across the entire shift. It's more noticeable at engagement since the spring tension at engagement is much lower than at full shift out.

^This. Springs work on a force/distance compressed system. We're not changing the spring rate, but say the spring constant is 100lb/in. At 1" of compression it takes a force of 100lb. At 2" of compression it takes a force of 200lb. If you compress the spring 1" to get the outer cover on then you throw a 1/4" shim between the cover and the spring it now takes 125lb to start making the spring compress further. Engagement force has had to increase by 25%. Compressing the spring another inch to 2.25" requires a total force of 225lb. That's a 12.5% increase in force. 25% is more noticeable than 12.5%, so you notice the engagement change more.

 

[sno*jet]

rule of thumb, preload is adjusting the force required to overcome the spring tension; engagement. final tension of a spring is the same no matter what force it takes to get it moving. The thunder products glide washers are probably not even 1/32". I would try one, especially if you have the exploding cover model. I dont like adding ANY rotating weight so would use the ZRP Ti cover bolts same time. I like the ease of ajustment on the CPC weights. They were also well matched on my gram scale unlike the factory weights. I would do these little tweaks to any new cat first thing, just me.