Board logo

Rear Spring rate?
Deckman001 - 21/6/20 at 06:59 PM

HI all,

I have a set of 16" long x 3" wide springs on my locost and need to sort a bit of suspension bounce as with my springs, it's rock solid.

Description
Description

What poundage rates have other people used for their locosts or any other sevens i guess as they are quite light at the back ?

Jason

JAG - 21/6/20 at 07:47 PM

My car has a Ford Escort MkII 'live-axle' and I have 150lb springs

Deckman001 - 21/6/20 at 08:39 PM

quote:
Originally posted by JAG
My car has a Ford Escort MkII 'live-axle' and I have 150lb springs


Awesome, the same set up i have so 150lbs sounds perfect, Cheers

Jason

Deckman001 - 22/6/20 at 01:22 PM

Have tried a quick look for these springs, but can't find any based on a locost cost.

Where have other peeps got theirs from ?

Jason

JimSpencer - 22/6/20 at 04:26 PM

Hi

The standard answer would be Dfaulknersprings - dot - com

But that sounds an awfully big spring, don't think even they do a 16 x 3.. without being cheeky are you sure?

Be worth dragging a shock off and having a measure, check there's not a load of preload on the spring etc?

HTH

Deckman001 - 22/6/20 at 04:38 PM

quote:
Originally posted by JimSpencer
Hi

The standard answer would be Dfaulknersprings - dot - com

But that sounds an awfully big spring, don't think even they do a 16 x 3.. without being cheeky are you sure?

Be worth dragging a shock off and having a measure, check there's not a load of preload on the spring etc?

HTH


Rear Spring
Rear Spring

Really, too long ? these rear ones are the shorter of the two sets I have too



I'll get another measurement done this evening and post the result

What a numpty, It should have been 160mm not 16"

And yes, I'll drag them off and take them off the shox to make sure what the ID is too.

Many many thanks for the heads up and reminder, you've saved me buying several sets, although i'm sure ii would have checked again before ordering !!

Jason

[Edited on 22/6/20 by Deckman001]

JimSpencer - 22/6/20 at 04:43 PM

Hi

By eck it does look a heafty thing..

What we're looking for is the internal diameter of the spring and the measurement between the shock collar and the locking ring - preferably with the car on full droop -get those and we'll know - Lol

JimSpencer - 22/6/20 at 04:47 PM

deleted duplicate post

[Edited on 22/6/20 by JimSpencer]

Deckman001 - 22/6/20 at 04:52 PM

Yes it's big and meaty, but it came with the car and I'm building a locost so it'll have to do apart from the spring rate anyway

Jason

PumaWestie - 23/6/20 at 11:12 AM

You could cut one in half length ways and have 2 x 8 inch ones. Far from perfect though

Rally design do cheap springs but Faulkners are the best all round supplier. They look like 2.25" ID springs to me. I guess the 3" you refer to is how you measured it on the OD

rusty nuts - 23/6/20 at 11:20 AM

Just a thought, is the car fitted with poly bushes? My suspension was rock hard and very noisy due to problems with the crush tubes being too short, sorting the crush tubes transformed the car

jps - 23/6/20 at 12:09 PM

quote:
Originally posted by Deckman001
a bit of suspension bounce


(Especially if others have success with similar spring rates) could it be a damper issue rather than a spring problem - i.e. the damper not slowing the bound or rebound sufficiently?

Deckman001 - 24/6/20 at 04:51 AM

Hi all, to be honest, i think the spring rates are 300lb from memory and i had assumed that it would just be a slightly hard ride, but apparently on the test drive it was rock hard, I have also turned the damper adjuster both ways, with no change in not being able to push down the rear of the car at all.

The 3" comment is definitely the O/D , So yes I think 2.25 ID are likely to be what i need, I will certainly take them off though before i get round to ordering the new springs, as am not sure an IVA tester will take it over any bumps to notice how stiff they are and I can change them while i sort out registration and other bits i have to do after IVA that also take time.

Jason

adithorp - 24/6/20 at 06:42 AM

Don't think they'll make any difference to IVA. If they are as hard as you describe though it's not just the ride it'll affect but the grip level. Even good springs are relatively cheap so not worth spoiling the car for the sake of that

steve m - 24/6/20 at 09:12 AM

Jason,

From memory, my rear springs were 150lb,

I also as said above poly bushed the whole suspension, that alone was one of the best mods and improved the handling, the driving, no more squeaks or tight spots,

steve

Deckman001 - 24/6/20 at 01:41 PM

quote:
Originally posted by steve m
Jason,

From memory, my rear springs were 150lb,

I also as said above poly bushed the whole suspension, that alone was one of the best mods and improved the handling, the driving, no more squeaks or tight spots,

steve


Cheers Steve, I'll certainly bare that in mind once it's on the road

Jason

paulf - 24/6/20 at 05:32 PM

My rear springs are 160lb and i thought they were too soft and tried 180s but they were definitely to hard and went back to the 160lb springs.The fronts are 275lb .
Paul.

Deckman001 - 26/6/20 at 06:52 PM

Hi all, so i stripped them off, 7" long and 2.25" ID so I will be after a set of 170lb springs, 'Falkners' want about £79 delivered, anyone got any of these they don't want ?

Jason

JC - 26/6/20 at 07:39 PM

I need to have a look at my rear springs. I've wound the suspension up as high as I can but it still bottoms out sometimes...this is new to me. There used to be a god awful squeaking from the poly bushes so as a winter job I went to strip the trailing arms (de dion back end) only to discover that the lower arms were fouling on the seatbelt bolt and had bent - there was no way they had ever had full movement!!! Should have spotted it when I bought the car....ah well!

Deckman001 - 27/6/20 at 11:50 AM

quote:
Originally posted by Deckman001
Hi all, anyone got any of these they don't want ?

Jason