The V8 Owners Forum -

I think I see where you are coming from now - you have the big issue with Panhards and leafs - they just do not go together as they get in each others way when looking to lower the RC.

Not a great deal you can do with the back end that you have already done without a complete redesign with a coilover based approach. The Mumford offers a solution that will fit within the leafs and have an effect - although I would maintain that the result will be compromised due to the nature of the leaf suspension BUT it does allow massive scope for playing

By the way is it entry or exit oversteer or just plain all the way through ?

Andrew

mgbloke wrote:Andrew

My main reason for choosing the Mumford is to lower roll centre to hopefully reduce understeer. If it doesnt work I will revert back to a panhard rod.

Mark

Sorry should read oversteer.
The back end is always too ready to step out.

I am going to get the bellcrank and pivot made up and then make a full size model to see where it is best to put the mounting points.
Also I can plot the sideways movement if any.
my last event is 23rd Oct so will tear it all apart after that.
Hopefully this will be a big improvement over the Panhard.

Mark

Having made a full size model I have decided that this probably wont work with leaf springs. When in roll the axle actually moves sideways about 30mm.
Im not sure my composite springs can withstand twisting, sideways movement and do their suspension job without having problems.
I will probably do a 4link coilover conversion at a later date and use the mumford then.

Well I am now forced to change from the composite springs and a custom coilover setup is well under way.
I have spent hours mocking up different setups inc panhard rod Watts and Mumford linkages.
Still going with the mumford and have started to make the linkage.
some pics.
soon be ready for a trial fit .

Well after a LOT of work I have tested the new 4 link trailing link suspension with the mumford link and it seems to be very good on the road. The car feels slightly more refined. Tried some roundabouts at speed and couldn't make it break loose.
Now to try it on track.
I originally built it with #150 lb springs but changed to #175 lb.
Also I have the option to lower the rear roll centre.
Mark

a few pics.

Looking good mate

Hi
You know you find the strangest things under the back of MGBs holding the back wheels apart!
best regards
Mike

Awesome work mate.

Thanks guys, its nice to be a bit different.
Here is a mock up clip.

On Friday 11th July the new suspension was tested on track at castle Combe. I immediately noticed how much the rear gripped under power out of the corners and how stable the car felt. For the second session I clicked the shocks harder which further improved the performance.
I had 5 sessions of 15mins on track.
Really delighted with the result and think with some fine tuning it will be awesome and of course a lot stronger than the composite springs that it replaces.
Another thing that I noticed was much less tyre wear.
Why are more people not using this????

Mark

Because they're sheep.

Glad it's worked out so well, you obviously did your research and designed it well. What shocks are you using?

Had the shocks purpose made by Protech in Melksham. Nice quality units in aluminium. only single adjustable though.

I had an issue with the axle tubes being bent due to welding on the bracketry. Now straightened and fresh CW & pinion along with the quaife serviced.
Just done one more trackday and I have to say it is quite remarkable how this contraption keeps the rear so planted, so much so that I am having to change my driving style to suit. Well chuffed and looking forward to some extra power soon. Well worth all the work.