Reducing axle tramp

Post by **morrisman1** » Tue Feb 10, 2009 9:49 am

one of the current morry projects is resulting in a lot of power going through the rear axle, about 110hp. it will likely be a datsun sunny rear end.

It has been suggested to do a 4-link rear end setup but im also looking for opinions from morry people, hopefully someone here will have a good idea of what is effective for the morry. its in a 4-door saloon.

its not going to be a burnout vehicle but a dose of axle tramp is both uncomfortable, dangerous and ruins an attempt at a brisk take-off.

thanks in advance

Post by **leyther8008** » Tue Feb 10, 2009 9:59 am

In the seventies we used to use 'anti tramp' bars on our jacked up custom cars these bolted to the centre of the spring at the axle and when the spring wound up the fronts of the bars went up and hit the front spring pivot point effectivley locking the suspension, I never had a car with enough power to justify them but there where a lot about. Usually painted bright yellow box sections with a big rubber bump stop at the front. This assumes your running leaf springs of course.
Blimey!! a quick google search turns up these, they still make them!
down near the bottom of the page.
http://www.rpmoutlet.com/ramhemieibachh.htm
For a big dodge so they must do something.<br>

<br>

This is how I remember them

Post by **ASL642** » Tue Feb 10, 2009 10:27 am

I have the Owen Burton Anti tramp kit fitted and it really improves the handling - cornering feels like the car is on rails very positive.

There is a current kit available from one of the morris suppliers for £150. PM me for details.

Post by **PSL184** » Tue Feb 10, 2009 1:29 pm

Are you not permitted to mention JLH Lou ;-)

Post by **ASL642** » Tue Feb 10, 2009 3:36 pm

No as a National Committee Member I cannot. I could mention Owen Burton though as they no longer trade - very useful !!

Post by **jonathon** » Tue Feb 10, 2009 3:44 pm

But ESM still sell them under a different name!

Post by **Judge** » Tue Feb 10, 2009 3:56 pm

That sorts that little problem out

Post by **jonathon** » Tue Feb 10, 2009 4:04 pm

Could you just mention the name JLH and not give a price, or is this not allowed

Post by **Judge** » Tue Feb 10, 2009 4:09 pm

I can't see as that's a problem Jonathon. It appears that this is OK.

regaliaqueen wrote:Hi, found him on the internet pops-place dot co dot uk

Only a phone number doesn't appear to have an email ad.

Post by **jonathon** » Tue Feb 10, 2009 4:24 pm

I thank you sir

Post by **mike.perry** » Tue Feb 10, 2009 4:24 pm

There is a rally prepped Minor around the Reading area with anti tramp bars. I have seen it up on the car lift several times. The bars are attached to the axle U bolts at one end and the front spring hangers at the other. They still allow the spring to move vertically but prevent it from twisting. Plus tele shockers.

Post by **jonathon** » Tue Feb 10, 2009 5:16 pm

This type will reduce tramp but will do nothing for handling in normal use.
The tele dampers might offer some assistance in axle location depending on how they are mounted. However this would be a bi product rather than inherent design feature.
The ones you mention Mike would be either the old O Burton designed kit or one that Grumpy's produced

Post by **bmcecosse** » Tue Feb 10, 2009 5:18 pm

Fitting the 7 leaf Traveller springs greatly reduces axle tramp! To the point it doesn't exist on my Traveller - but sadly I don't have 110 bhp. It would be a cheap 'fix' and i would say well worth a try. Proper anti-tramp bars used to be a popular addition to M 1000 and A35/40 - usually a simple tubular bar mounted on a pivot alongside the front spring eye - and connecting to the spring pan, thus pivoting with the axle but not allowing the leaf spring to 'wind up' - which is what causes the tramp!

Post by **alanworland** » Tue Feb 10, 2009 6:24 pm

I reckon if you installed a sidevalve engine ! you would not have any more axle tramp problems!

Post by **mike.perry** » Tue Feb 10, 2009 9:19 pm

I fitted Traveller 7 leaf springs to my Series MM before I realized that Traveller and MM 7 leafs were different thicknesses. It jacked the back up and was a constant battle to keep the back end behind me through the roundabouts. I soon swapped them for standard 5 leaf springs and cured the problem

Post by **jonathon** » Tue Feb 10, 2009 9:29 pm

I'd agree Mike , its not a route that I'd take although I can understand the reason behind it, in my experience though it seldom improves matters.

Post by **bmcecosse** » Tue Feb 10, 2009 9:30 pm

Shouldn't really make it sit any higher (depends on car load of course) - but if it does - a lowering kit could be used.

Post by **mike.perry** » Tue Feb 10, 2009 9:39 pm

It was higher because the original springs had developed a reverse curve, great for cornering as the springs just rested on the rebound rubbers!!
I think I've still got a lowering kit in a box of bits.

Post by **minor_hickup** » Tue Feb 10, 2009 9:54 pm

leyther8008 wrote:In the seventies we used to use 'anti tramp' bars on our jacked up custom cars these bolted to the centre of the spring at the axle and when the spring wound up the fronts of the bars went up and hit the front spring pivot point effectivley locking the suspension, I never had a car with enough power to justify them but there where a lot about. Usually painted bright yellow box sections with a big rubber bump stop at the front. This assumes your running leaf springs of course.
Blimey!! a quick google search turns up these, they still make them!
down near the bottom of the page.
http://www.rpmoutlet.com/ramhemieibachh.htm
For a big dodge so they must do something.<br><br>

This is how I remember them

That's a lift bar which pushes up on the floor and pushes the axle down as it twists to aid traction. They're not great for handling but good for straight line traction.

Post by **bmcecosse** » Tue Feb 10, 2009 10:13 pm

Certainly looks good for catching on speed bumps !