OzVMX Forum

Marque Remarks => Yamaha => Topic started by: Grunter215 on August 29, 2008, 09:54:40 pm

Title: Dual rate monoshock?????
Post by: Grunter215 on August 29, 2008, 09:54:40 pm

I got this shock with YZ250H which has two springs on it (seems standard  plus a small one about 3inch). Shock body has extra grooves for spring seat and a nylon type spacer/retainer between springs. There is also   "C P" stamped on body.All looks professionally done. Was there a dual spring kit available or is this someone's experiment. Any theories on this.Will do pics soon as.

Title: Re: Dual rate monoshock?????
Post by: yzhilly on August 29, 2008, 11:35:17 pm

The IT shocks had 2 springs but i think the travel lengths were different ???

Title: Re: Dual rate monoshock?????
Post by: evo550 on August 30, 2008, 03:45:33 pm

I think alot of people would change the the standard progresive wound spring on the "h" models for and earlier model Dual rate springs, I have a Gaythorne yamaha one (Qld) done back in the day, also read a T&T article about as well a while ago. Gave a better ride apparently.

Title: Re: Dual rate monoshock?????
Post by: YSS on August 30, 2008, 03:50:25 pm

Combining the dual spring with a good piston and better shim stack it should be a good working shock

Title: Re: Dual rate monoshock?????
Post by: evo550 on August 30, 2008, 05:06:15 pm

Why was the dual rate springs prefered over the progressive wound ones?

Title: Re: Dual rate monoshock?????
Post by: YSS on August 30, 2008, 05:21:55 pm

Because you can change rates

Title: Re: Dual rate monoshock?????
Post by: Grunter215 on August 30, 2008, 06:53:24 pm

Here's some photos.Have been told its a S&W kit.Anyone know about this kit???

Title: Re: Dual rate monoshock?????
Post by: Grunter215 on August 30, 2008, 06:56:26 pm

Another pic

Title: Re: Dual rate monoshock?????
Post by: Grunter215 on August 30, 2008, 07:01:47 pm

The main spring seems to a standard progressive one from my comparison to other springs.

Title: Re: Dual rate monoshock?????
Post by: TonyB on August 30, 2008, 08:34:27 pm

All I need for my 465 monoshock is a dual rate spring setup just like these. so can anyone point me to one of these? I think it is what Yamaha really needed. or maybe there is a sp[ring manufacturer that someone knows?

Title: Re: Dual rate monoshock?????
Post by: YSS on August 30, 2008, 09:04:23 pm

YSS, min order 100 pieces