My M750 Rebuild

Mr Gazza · 15-10-2015, 07:31 PM

1. Yes the dynamics of the rear suspension can be a bit mind bending, espesially when you are trying to get your head round the effects of changes to it.

I very slightly increased my ride hieght by winding the rose joints out a bit. I was very puzzled as to why that caused an increase in sag and a subsequent need to increase the pre-load....and then a couple of clicks of rebound too.

A swept path diagram would be beyond me, but I have considered a little balsawood model to study the dynamics...A simpler model could be made from stiff card and those paper fastener rivets with the two pointed legs that we used to use in primary school..

I doubt that your bike is a mongrel, but it might be posible that you have a different rocker?
I know there are different types, but whether they vary in geometry I couldn't say. There is one (Rare) design that is adjustable, from an 888 or 851 I believe.
If you have one of those you could be in the money..

2. How gay would I have to be?

3.

17-10-2015, 06:46 PM

Quote:

Originally Posted by Mr Gazza

I very slightly increased my ride height by winding the rose joints out a bit. I was very puzzled as to why that caused an increase in sag and a subsequent need to increase the pre-load....and then a couple of clicks of rebound too.

I'm always amazed how such small changes can have such a huge effect on the way a motorcycle rides/handles.

10 years ago I bought a 1997 FireBlade, which was a revelation (to me) in the way it handled.

Being a dumb*ss, i thought I could tailor it to my riding style (slow and wobbly) and that's exactly what I managed to do, it was unrideable, except in a slow and wobbly fashion, cos i had put two more clicks of this, and half a turn of that, and completely f**ked it up!!

I may be dumb, but I am a fast learner - if it ain't broke - don't fix it!

And if it is broke, find out how to fix it before fixing it!

PS Am expecting to change this shock for something thats not 18 years old once the bike is up and running (getting it unSORNed, taxed + MOTd being my priority now) so am not too worried about the old dear of a Showa that's there now as long as its MOT worthy.

15-10-2015, 07:31 PM	#1
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,834	1. Yes the dynamics of the rear suspension can be a bit mind bending, espesially when you are trying to get your head round the effects of changes to it. I very slightly increased my ride hieght by winding the rose joints out a bit. I was very puzzled as to why that caused an increase in sag and a subsequent need to increase the pre-load....and then a couple of clicks of rebound too. A swept path diagram would be beyond me, but I have considered a little balsawood model to study the dynamics...A simpler model could be made from stiff card and those paper fastener rivets with the two pointed legs that we used to use in primary school.. I doubt that your bike is a mongrel, but it might be posible that you have a different rocker? I know there are different types, but whether they vary in geometry I couldn't say. There is one (Rare) design that is adjustable, from an 888 or 851 I believe. If you have one of those you could be in the money.. 2. How gay would I have to be? 3. __________________