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tramp bars


d.p.n.s

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morning all

im thinking about making some tramp bars

for my ecort van.

i know how im going to make them the only

question i have is...

where the bar hits the spring should it be touching it at all times

or should there be a wee bit of a gap between rubber and spring.

if you know what i mean :mrgreen:

dan

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Dan these are the ones i made for my wagon I made the rubber stoppers adjustable by drilling a hole & welding a nut on then brought some bump stops from canterbury transport spares just down the road for us .. I foun d it better to be touching but it pulled way better skids if you wound them of the spring a bit..

Heres a couple of pics

1005128gj7.jpg

1005138zx2.jpg

1005139wr4.jpg

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yeah if they are under the diff they should face backwards. If on top of diff they go forwards. Have you looked on turbosport there is a few good pics of tramp bars in escorts, they are all mounted on top of the diff and the other end to a bracket next to the front spring hanger.

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how much does a diff really twist the springs ive never really thought about that

(noobish to cars just moved over from bikes in the last 9mnths :rolleyes: )

Lots, and lots. Especially in lower powered cars that have been given big motors where the suspension was never designed for 3 times the power.

Sir Newton figured this out a loong time ago.

Every action has an equal and opposite reaction.

If you take this pic for example

1005139wr4.jpg

The wheel is turned anti clock wise if you are looking at the back.

There for the diff is forced clockwise and thats why the tramp bars there are fine.

If the bars were on the top they would still have to point forward.

The only way they can point backwards is if a, you do skids in reverse, or b, they are held some how to the body.

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how much does a diff really twist the springs ive never really thought about that

(noobish to cars just moved over from bikes in the last 9mnths :rolleyes: )

Lots, and lots. Especially in lower powered cars that have been given big motors where the suspension was never designed for 3 times the power.

Sir Newton figured this out a loong time ago.

Every action has an equal and opposite reaction.

If you take this pic for example

1005139wr4.jpg

The wheel is turned anti clock wise if you are looking at the back.

There for the diff is forced clockwise and thats why the tramp bars there are fine.

If the bars were on the top they would still have to point forward.

The only way they can point backwards is if a, you do skids in reverse, or b, they are held some how to the body.

To quote Heinlein "I am only an egg"

I'm looking at the springs on a escort, and see that the front of the leaf the springs are linked directly to the body, whereas the rear is only loosely linked by a shackle. So, to me the rear part of the springs need controlling more than the front.

Like I say, I have absolutely no experience. Please let me know where I'm wrong... I see that there's a rotational component to the stresses, but still one end of the spring is more controlled than the other.

Cheers, Steve.

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noobs anonymous ha

nah from what im gathering and makes complete sence now its been pointed out to me

turning the wheel (in the pic-anti clock wise) puts a clockwise force on the diff/leafs twisting them in a clockwise motion

the tramp bars limit the twist by moving with the diff and hitting the stops

damn it is actually harder to explain than i though

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