Where to get aftermarket primary springs?

[Nikolai]

Does anyone know where you can get aftermarket primary springs for Yamaha clutches?

I'm running a GWG primary and want a spring with more rate but equal preload and Yamaha doesn't have one.

I've looked on the following sites already: Fett bros, EPI, Pioneer, Hartman, Hi-Perf Engineering, DennisKirk, Aaen, Thunder Products, MCB, and Goodwin.

 

[BADSLED]

Yamaha Blue-White-Blue will get you even closer... Not sure there is a spring with such values available.

 

[**sj**]

why the 100/200 what are you trying to setup

 

[Srxspec]

That is going to be tough to find I believe. The closest one I saw by just glancing through my notebook quickly was a Hauck Green @ 88/198.

 

[yukon yamaha]

what about a pink spring from EPI......

 

[Nikolai]

Yamaha Blue-White-Blue will get you even closer... Not sure there is a spring with such values available.

The BWB only has 112 lb rate.

The Hauk would be ok except I don't want to go lower in preload, if anything I'd rather go a little higher. As for the spring change, I need a little more rate, my RPM's are still falling a little.

 

[Nikolai]

what about a pink spring from EPI......

Do you know the preload/rate? EPI only lists blue, red, yellow, orange, and white springs on their website.

 

[yukon yamaha]

i will have to look but i think it is off a cat set up
OKAY HERE IT IS
parts number acss-5
2-1/2 load = 86 lbs
1-7/16 load = 148 lbs

 

[Srxspec]

Yamaha Blue-White-Blue will get you even closer... Not sure there is a spring with such values available.

The BWB only has 112 lb rate.

The Hauk would be ok except I don't want to go lower in preload, if anything I'd rather go a little higher. As for the spring change, I need a little more rate, my RPM's are still falling a little.

BWB is a 45/111 KG which equals 99/244 lbs.

 

[Nikolai]

I guess I'm going bad math, I thought 1 N/mm = 5.7 lbs hence the 27 N/mm GWG would be 154 lbs. Any know the correct formula?

I need the Maxximum yellow spring (110/308), do you sell these?

 

[Srxspec]

1 kilogram-force = 2.205 pound-force

45 KG preload = 99.xx LBS

111 KG finish load = 244.xx LBS

I do not have any Maxximum Yellow springs at all, sorry.