New clucth up-date kit for Side Winder

[Byam]

Can anyone comment how the pink spring compares to the TP orange? I bought the orange and installed over the summer, no run time yet. How do the SRX primary weights compare to the 2018 primary weights? Shape, weight, both?

Same weight profile! They change the 4,5gr tip rivet for .85gr. Personally i am realy not impressed by their "upgrade kit"
They still use the same shitty primary Spring( to long, coil to small=spring distortion )
i am aware since december 2016, yamaha seems not 2 years later"...WTF

 

[Conedodger]

Same weight profile! They change the 4,5gr tip rivet for .85gr. Personally i am really not impressed by their "upgrade kit"
They still use the same shitty primary Spring( to long, coil to small=spring distortion )
i am aware since december 2016, yamaha seems not 2 years later"...WTF

Thx, but is that a typo? 4.5 GR to .85 GR? It's been a while since i messed with primary weights.... not sure if roughly 4 grams is a minor change or significant? less weight = slower/delayed shifting and less belt squeeze?

 

[Byam]

Normaly its about ~~~~~150rpm/gr 4 grams is a lot......
This Clutch kit has been made for the srx 1"track.... and now they think its gona cure problems for any SW models?

THEY SUCK BIG TIME

 

[Beerman]

Progressive reverse angle 35/39

The pink secondary spring that is in the update has been around since 2003 in the RX-1.

Interesting that they went the way @NOS-PRO did very early on with the helix. But it seems like a lot of guys have now gone with a regular progressive vs the reverse. Some seem to have success with 37/35, 39/35 and others. I'm as mystified as always.

 

[74Nitro]

Normaly its about ~~~~~150rpm/gr 4 grams is a lot......
This Clutch kit has been made for the srx 1"track.... and now they think its gona cure problems for any SW models?

THEY SUCK BIG TIME

Not necessarily, it comes standard on my 19 with 1.6 track.

 

[74Nitro]

Normaly its about ~~~~~150rpm/gr 4 grams is a lot......
This Clutch kit has been made for the srx 1"track.... and now they think its gona cure problems for any SW models?

THEY SUCK BIG TIME

The Yamaha weights with flatter shift curves take more weight to change the rpm compared to years ago.
For example, adding 4 grams to the already very heavy four stroke weights with flat shift curves won't have near the effect as adding 4 grams to a former popular Yamaha weight like the 8DN-20

 

[ROCKERDAN]

Interesting that they went the way @NOS-PRO did very early on with the helix. But it seems like a lot of guys have now gone with a regular progressive vs the reverse. Some seem to have success with 37/35, 39/35 and others. I'm as mystified as always.

Big diff from stock HP vs 270++....Early spool Hurricane tunes can utilize a progressive helix, stock hp and whimpy tunes without early spool need less helix to help with spool corner to corner.

Dan

 

[SudburyLakeRunner]

Here is a sheet on the kit I got at the dealer.

Thanks for sharing. I picked one up at my dealer Friday and installed yesterday while performing my seasonal service. I'm at 580 Miles and blew a belt around 450. I took my time breaking it in too so hopefully this kit will add some belt life.

 

[DennyTuna]

I won't be getting this kit. At the start of last year before sled hit snow I installed TD's clutch kit, the kit includes heavy duty rollers and new primary and secondary springs. Ran the entire season on original belt and put 2380 miles on with NO issues. The only thing I changed for this season is making sure the clutches were aligned properly. Using the Hurricane tool I needed to add .015 thousands (.381mm) shim and it is spot on now. I'm stock and that makes a difference vs. a tuned up winder. I will be watching though with interest how this new kit from Yamaha performs this season.

 

[ROCKERDAN]

I won't be getting this kit. At the start of last year before sled hit snow I installed TD's clutch kit, the kit includes heavy duty rollers and new primary and secondary springs. Ran the entire season on original belt and put 2380 miles on with NO issues. The only thing I changed for this season is making sure the clutches were aligned properly. Using the Hurricane tool I needed to add .015 thousands (.381mm) shim and it is spot on now. I'm stock and that makes a difference vs. a tuned up winder. I will be watching though with interest how this new kit from Yamaha performs this season.

You are first i've heard had to add a shim.....everyone else has had to machine off material.

Dan

 

[DennyTuna]

Well I forgot to say I removed the stock washer /shim which is close to 2 mm first then just needed to add the .381 mm shim...sorry.

 

[ROCKERDAN]

Well I forgot to say I removed the stock washer /shim which is close to 2 mm first then just needed to add the .381 mm shim...sorry.

You did not machine off the secondary?

 

[DennyTuna]

Nope, guess I was lucky! Made sure as I measured and remeasured multiple times and always came up with same results. After setting the go no go tool for correct alignment I could push the secondary back towards the shaft circlip, although it was very slight it still moved. So I found these shims at Mcmasters with perfect I.D and O.D in .015 thous. (.318mm), .020 thous. (.510mm) and .025 thous. (.720mm). I have now aligned my winder and 3 vipers with one more winder to do.

 

[RIKMAN]

If you ever remove the primary, recheck your offset after putting it back on. My SRX was at 58 before removing it and after torquing to spec,it was at 57.

 

[ROCKERDAN]

Nope, guess I was lucky! Made sure as I measured and remeasured multiple times and always came up with same results. After setting the go no go tool for correct alignment I could push the secondary back towards the shaft circlip, although it was very slight it still moved. So I found these shims at Mcmasters with perfect I.D and O.D in .015 thous. (.318mm), .020 thous. (.510mm) and .025 thous. (.720mm). I have now aligned my winder and 3 vipers with one more winder to do.

Wow, makes me wonder if your primary is not torqued down? That is alot further out then all the others. Sounds like maybe 3 to 4mm difference from most of us. Interesting.

Just for kicks, I would measure it the YAM way too, and see where you are. Just incase something is off somewhere else.....No need to post that measurement here, but PM if you like.

Dan