The 50

[husaberg]

no idea but i could ask him, it is a carbon fibre Emot part

It is I guess his standard conversion part then.
http://www.emot.nl/webwinkel/index.p...ewCat&catId=27

[cotswold]

They have it so damn good in the Uk bike wise, many to choose from, if I had a bigger slush fund I would import some of these.
This one is race ready freetech style and is 900 quid

[seymour14]

They have it so damn good in the Uk bike wise, many to choose from, if I had a bigger slush fund I would import some of these.
This one is race ready freetech style and is 900 quid

We'll take 5.

[cotswold]

I have decided to bucketise my rear shock as the spring is way too hard, no sag at all and next to bugger with me sat on it. The old chassis had a TZR250 shock bodged into it and it worked real well so I am going to cut 1 coil out of it and fit it into the pit bike shock. What could possibly go wrong

[TZ350]

Cutting a coil out will make it harder.

[mr bucketracer]

I have decided to bucketise my rear shock as the spring is way too hard, no sag at all and next to bugger with me sat on it. The old chassis had a TZR250 shock bodged into it and it worked real well so I am going to cut 1 coil out of it and fit it into the pit bike shock. What could possibly go wrong

hope thats not a zxr400 shock..noooo

[cotswold]

Cutting a coil out will make it harder.

The coils are wider apart on the TZR , should I just compress it to fit as I thought that would make it stiffer ?


The pitbike coils are 12.5mm, 13mm apart and 140mm long


the TZR 11mm, 22mm apart and 160mm long

They both have 5 active coils
Now im confused

[cotswold]

hope thats not a zxr400 shock..noooo

TZR 250, I have the swing arm as well but it's destined for the scrap man as it will never get used

[diesel pig]

TZR 250, I have the swing arm as well but it's destined for the scrap man as it will never get used

What year? I may be interested

[Bert]

TZR 250, I have the swing arm as well but it's destined for the scrap man as it will never get used

A bit late, but dont scrap it.
1KT sitting in my shed waiting some love...

[cotswold]

A bit late, but dont scrap it.
1KT sitting in my shed waiting some love...

ill take it to the GP and if someone wants it

[F5 Dave]

The important part of the calculation is, given coil diameter, the wire thickness and the active coils.


Think of a flat spring, like you mates ruler at school. Very bendy if you hold it at either end, but much stiffer with you hands closer together.

A spring is just convenient packaging of a leaf spring.

The fact you can't fit it is inconvenience.

[Sketchy_Racer]

I have decided to bucketise my rear shock as the spring is way too hard, no sag at all and next to bugger with me sat on it. The old chassis had a TZR250 shock bodged into it and it worked real well so I am going to cut 1 coil out of it and fit it into the pit bike shock. What could possibly go wrong

Here's a handy spring calculator. Just measure up the springs and look at the calculated N/mm rate. It won't tell you what size you need but it will give you a good comparison of the two springs to see how close they are.

[husaberg]

I have decided to bucketise my rear shock as the spring is way too hard, no sag at all and next to bugger with me sat on it. The old chassis had a TZR250 shock bodged into it and it worked real well so I am going to cut 1 coil out of it and fit it into the pit bike shock. What could possibly go wrong

Cutting a coil out will make it harder.

There is a semi professional way of making it shorter without cutting it and making it stiffer.
You make up a big long bolt compress the spring with a template top and bottom with flanges to keep it centered and simply pop it in the oven.
I will post the details tomorrow.

[Grumph]

There is a semi professional way of making it shorter without cutting it and making it stiffer.
You make up a big long bolt compress the spring with a template top and bottom with flanges to keep it centered and simply pop it in the oven.
I will post the details tomorrow.

I was told a couple of years back of a method which may apply here....

The timaru based group of car race guys who over many years have had much success at national level, wanted to race a datsun 1600SSS in production class races. They looked at it and said, ride height is way too high...rules say we can't change or modify the springs.
So while the engine and box were out being blueprinted, the car sat on old rims, stuffed full of sandbags - I'm told about a ton weight all up...
By the time the engine was done it sat about 1 1/2in lower - and there were no marks of heating on the original finish of the springs.
Puzzled a lot of scrutineers that did.