Leaf spring setup

H2OLOVA · Post by **H2OLOVA** » Wed Sep 06, 2006 2:12 pm

In the process of refitting the springs to Nibbys truck and need some info about locating the spring mounts. We are using 60 series springs on his 40 series. Because of this we have removed all the old spring mounts etc and we are relocating new mounts onto the chassis. We have the measurements (thanks Roc :wink:

) of the distance between mount centres on a standard sixty series (1070 front and 1180 rear) but when i prefitted the front spring and shackle at this measurement the shackle was pretty much following the spring curve and leaning forward towards the middle of the spring :shock:

. We have no weight on them at this stage, and i presume that once the engine and body weight are added it will flatten the spring and swing the shackle back to give us our (approx) 45 degree shackle angle. Am i on the right track or am i hopelessly out of my depth here :wink:

geometry was never my strong point.

Looking forward to any constructive advice.

Armourguard · Post by **Armourguard** » Wed Sep 06, 2006 4:22 pm

This could be of some help

http://medusa.ih8mud.com/cruiser/FJ45/Suspension/Springs.html

niblik · Post by **niblik** » Wed Sep 06, 2006 4:24 pm

nobody?

further to what h2o has said.. has anyone got a 60 with a 3b they could quickly just take the measurement of the chassis mounts for the spring one end and shackle the other, and post that measurement from eye to eye? (straight line) just to check my measurements....

or a 60 with modded engine but converted from a 3b with std spring mounts still?

aw go on................ purty please?................

Sadam_Husain · Post by **Sadam_Husain** » Wed Sep 06, 2006 4:32 pm

When I've had cruiser springs reset or replaced in the past they have started out like that untill the weight is on them and they've had a bit of time to settle. If you guys got the shackels on thats got to be a good sign to start with?

H2OLOVA · Post by **H2OLOVA** » Wed Sep 06, 2006 4:36 pm

Definitely helpful.....time to go do some more measuring :wink:

Thanks for that

H2OLOVA · Post by **H2OLOVA** » Wed Sep 06, 2006 4:40 pm

Sadam_Husain wrote: If you guys got the shackels on thats got to be a good sign to start with?

the shackles are on the spring but don't have a mount on the chassis..............yet :twisted:

Plus we are using "old" new springs

Sadam_Husain · Post by **Sadam_Husain** » Wed Sep 06, 2006 4:56 pm

Measure twice and cut once.... or in your case measure twice and weld once? Sounds like you'll have to find a 60 cruiser to check the measurements off before you commit with welding the mounts?

De-Ranged · Post by **De-Ranged** » Wed Sep 06, 2006 4:57 pm

to get the max travel out of leaf spring shackles run a tape measure down the top spring you want to know the length of the spring with its flat (full compresion) what you do is take the shackle length off this and thats the front spring "eye" to the chassi mount "eye" of the shackle this will let the shackle fold flat giving you the most suspension movement

Hope this is what your after

Cheers Reece

H2OLOVA · Post by **H2OLOVA** » Wed Sep 06, 2006 5:04 pm

aaaaahhhhhhhhhhhh :wink:

more perfect information

. i might, i just might be able to do some welding tonight................

Sadam_Husain · Post by **Sadam_Husain** » Wed Sep 06, 2006 5:18 pm

H2OLOVA wrote:aaaaahhhhhhhhhhhh more perfect information . i might, i just might be able to do some welding tonight................

Or perhaps some tacking incase something has to be adjusted when the trucks put back together again :oops:

H2OLOVA · Post by **H2OLOVA** » Wed Sep 06, 2006 7:34 pm

Sadam_Husain wrote:Or perhaps some tacking incase something has to be adjusted when the trucks put back together again

Its not a problem if i get it wrong....................its not my truck :wink:

long as it looks OK when Nibby picks it up :wink:

Goose · Post by **Goose** » Wed Sep 06, 2006 8:02 pm

H2OLOVA wrote:
Sadam_Husain wrote:Or perhaps some tacking incase something has to be adjusted when the trucks put back together again

Its not a problem if i get it wrong....................its not my truck
long as it looks OK when Nibby picks it up

hmmm, if thats the case, just weld them on anywhere, Nibby aint too bright, he'll never know.......

Glee, the perfect crime :lol:

niblik · Post by **niblik** » Thu Sep 07, 2006 3:08 pm

H2OLOVA wrote:Its not a problem if i get it wrong....................its not my truck
long as it looks OK when Nibby picks it up

WTF?!?!

8-O ..................................................... :'-(

i know you'll get it perfect h2o... :wink:

rokhound · Post by **rokhound** » Thu Sep 07, 2006 5:44 pm

niblik wrote:
H2OLOVA wrote:Its not a problem if i get it wrong....................its not my truck
long as it looks OK when Nibby picks it up

WTF?!?!

8-O ..................................................... :'-(

i know you'll get it perfect h2o...

40 doing the crab walk hehehe.