Which rear shock length?

[dickie]

I've got a ts1 motor with mb inlet manifold (better frame clearance) but with a 3mm reed packer (worse frame clearance). This is going in my series 2 frame.

I'm going to use a protech rear shock, but can't decide whether to use a 300mm s3 shock or 310mm s2 shock.

I'm using either a curly jl3 or clubman so footboard clearance is not an issue.

What are the pros and cons of the 2 shock lengths? Furthermore, is it really irrelevant if I NEED the shorter length to achieve sufficient frame clearance?

Opinions and facts welcome.

By the way, I'm not keen to use eccentric cones so please don't suggest it.

[Knowledge]

You clearly stand the best chance of making it all fit with the 300mm shock. I assume that you currently can't do a dry build, or else you wouldn't be posting on here.

I have a Harry Barlow barrel, which I believe has the same exterior dimensions as a TS1. I have a spacer and a Jimmers flange manifold (similar to the LTH one) and I have got it all in on standard cones and a R1 shock (300mm). It is tight, so be careful about what gaskets you fit throughout the inlet tract, but it fits.

The downside of a short shock is a small decrease in ground clearance, but if you are not racing on the track, then you are unlikely to notice.

[dickie]

Thanks, it's for a road bike, so I don't feel ground clearance is a major consideration. I'll go for the 300mm one then.

[coaster]

.................... and I have got it all in on standard cones and a R1 shock (300mm).

Not sure if all R1's are the same but mine is 295mm, a bit shorted than the S3 (300mm)

[Fast n Furious]

Thanks, it's for a road bike, so I don't feel ground clearance is a major consideration. I'll go for the 300mm one then.

Good call.