OzVMX Forum

Clubroom => Tech Talk => Topic started by: Nathan S on June 07, 2015, 10:29:53 am

Title: TT350 spring rates.
Post by: Nathan S on June 07, 2015, 10:29:53 am

Anyone know what they are, particularly the rear? RaceTech don't list anything.

Alternatively, anyone got a recommendation for a 90kg rider?

Ta. :)

Title: Re: TT350 spring rates.
Post by: redrider1 on June 07, 2015, 04:40:21 pm

I know that White Power use to make a rear shock for the TT250/350 and alternative rear springs.
Flood motorsport use to supply them.

Title: Re: TT350 spring rates.
Post by: Nathan S on June 07, 2015, 10:18:30 pm

It's going to end up with different (43mm) forks and different (46mm piston) shock, so replacement springs for the stock components won't help me.
I'm pretty set on 0.48 front springs, subject to knowledgable advice telling me otherwise.

Be good to avoid trial and error on the rear...

Title: Re: TT350 spring rates.
Post by: rob on June 07, 2015, 11:06:39 pm

Rear end is 5.5
Forks .43
For anyone wanting to do STOCK shock rebuilds, I have heap of NOS shock rebuild kits for Yamaha IT, TT, YZ, XT .

Rob.

Title: Re: TT350 spring rates.
Post by: Curtis on June 08, 2015, 10:11:14 am

What are you doing with the TT ?

Title: Re: TT350 spring rates.
Post by: Nathan S on June 08, 2015, 01:47:18 pm

The idea is that it will be my VTR bike, and can be leant out to mates as a Vinduro/modern trail bike.

I have a set of IT 43mm triples, and a Honda cartridge front end for it - so the front is only a set of springs away from being sorted.

Rear, I'm going to see if I can use the XT250 body (steel with 46mm ID), and add an external reservoir, the TT shaft, and some sort of more modern valve piston. If that doesn't work, I'll think again.

Title: Re: TT350 spring rates.
Post by: Curtis on June 08, 2015, 02:28:00 pm

Cool, Iv always had a soft spot for them, I had one but sold it cause I cant Vinduro it down here. You comin to Harrow?

Title: Re: TT350 spring rates.
Post by: Nathan S on June 08, 2015, 02:44:07 pm

Nah... Don't have a running bike that's legal...

Title: Re: TT350 spring rates.
Post by: Nathan S on June 08, 2015, 08:18:08 pm

And thanks Rob! :)

Title: Re: TT350 spring rates.
Post by: rob on June 08, 2015, 10:21:44 pm

No prob's Nathan,

The 46m shock piston I use and install into customers bikes is the T - valve  from Teknic motorsport .
The design is a bit like the ohlins shock piston and is 50% lighter than stock.
As always spring rate will determine the correct ride height and free sag ..... you will have to build your own valving stack, but once you find a good base setting you can valve either side of that.

Regards
Rob