springs

[warped]

Can anybody tell me what units Schumacher use to quote there spring rates?

Thanks

[tony12795]

Front
White 2.0
Yellow 2.5
Red 3.0
Grey 3.5
Blue 4.0
Black 4.5

Rear
White 1.6
Yellow 2.0
Red 2.5
Grey 3.0
Blue 3.5
Black 4.0

These are the new spring ratios.

Hope this helps mate

[warped]

Thanks but that wasn't quite what I meant.

I'm after the units of measurement e.g. lb/in or N/mm.

[Oliv996]

Originally Posted by warped

I'm after the units of measurement e.g. lb/in or N/mm.

lb/in

Assuming the unit is lb/in, here is a Excel sheet for conversion:

[Chrislong]

Hey Olivier, I love that chart - it should have its own sticky thread!

[warped]

Oliver, I don't think that the units are lb/in.

The reason being that on the track when I used to run a fireblade an associated slver front spring which felt slightly stiffer than an (2.5 rate) schumacher red, but softer than a schumacher grey (3.0 rate).

The associated springs are 3.85lb/in according to their website and your chart., which woud make them much harder than the above schumacher springs if the schumacher rates are in lb/in.

Btw I'm talking about the old style schumacher springs which do not he quite the same rates as the ones you have listed.

[mharlow]

Originally Posted by warped

Oliver, I don't think that the units are lb/in.

The reason being that on the track when I used to run a fireblade an associated slver front spring which felt slightly stiffer than an (2.5 rate) schumacher red, but softer than a schumacher grey (3.0 rate).

The associated springs are 3.85lb/in according to their website and your chart., which woud make them much harder than the above schumacher springs if the schumacher rates are in lb/in.

Btw I'm talking about the old style schumacher springs which do not he quite the same rates as the ones you have listed.

I believe the old schumacher spring rates are different to the new ones.

[MattW]

I believe they are lb/in.

However, the length of any spring does make a huge difference, which is why it isn't always possible to compare across brands.

[warped]

Not sure I buy that about the spring length.

Length really shouldn't make much difference.

Granted the rate will change if you cut coils off a spring, but the measured rate is the measured rate regardless of length.

The exception being if the springs are far too short because they're not perfectly linear and you get a certain amount of rising rate if the spring is near to going solid under compression.

Cheers for the replies anyway.

[Losi_110]

hey i don't suppose anyone knows the rates of the old schumacher springs do they?

[Oliv996]

Taken from CAT '98 exploded view:



Number after 'L' or 'M' is the rate in lb/in

[Losi_110]

Cool cheers for that

[Losi_110]

just want to atop this so i can find it easier later.