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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - Bump Stop and Handling

Anybody have any info on the above? I'm not referring to the rubber thingies. Those who've been racing know what I'm talking about. I don't intend to race but anything that I can do to improve the handling of my old girl is all to the good. As we're getting into the realm of 'secret racing men's business', if you wish to respond privately, I understand perfectly. Please do so by using my email address which is pjbm (at) bigpond (dot) com. Cheers
Peter TD 5801
P Hehir

That title should read Bump Steer, not Bump Stop. Thanks Michael for picking that up. Cheers
Peter TD 5801
P Hehir

Peter, If you mean eliminating bump STEER, then snugness of all steering components with NO looseness has a lot to do with it. Also, zero toe-in is also necessary.
Lew Palmer

Yes Lew there was an error in the title that I corrected. This Lyrica is messing with my head. Thanks for the post. I knew nothing about this topic but recently have had an in depth conversation with someone who is extremely knowledgeable on the subject. We're both keen to see what the forum followers have to contribute. Getting this right and set up perfectly has significant ramifications for both speed and handling, as it seems you're obviously aware of. Cheers
Peter TD 5801
P Hehir

Peter
I'm not sure what bumpsteer if any that a TD in standard form has but it probably won't be much--it's easy to measure with a spring out
I've got a combination of MG bits in my car
YA chassis-Magnette rack--MGB spindles and steering arms and it turned out with exactly 0 bumpsteer through 150mm travel 75up 75down
Also, as Lew suggests the toe has to be set at 0 --If it's set with any toe in at all the transition from toe in to toe out as the steering is turned creates a soggy feeling during that transition period
On a real racing car,"when" everything is set up properly, springs,camber etc the handling of the car can be adjusted by adjusting the toe----toe in-understeer--toe out-oversteer
I think the main thing with an otherwise mostly std TD restoration is just make sure there's no wear anywhere, make sure your shock absorbers are in good nick, they will be the more noticeable thing driving and set that toe to 0
William Revit

Peter
You have mail--Battery Point TF
William Revit

Peter speak to Peter about this subject when next to see him.
John
J Walton

Hi John, I certainly shall, as and when this thread develops. Great to meet up with you again on Friday. I've spoken to Peter earlier today and will keep him and you aware of developments. After you left, without giving too much away, this was one of the topics we discussed at length.

Willy I've also received your email and passed it on to the Battery Point TF guy, who I also had a really pleasant long conversation with today. You're on my list of people to contact re furthering info exchange about T Type restoration, before we all enter that dreaded one way street towards the pearly gates, which of course is decades away for us all yet. My thoughts on that are once I turn in, bugger the speed limit, I'll be traveling up that road as fast as I bloody well can! Cheers
Peter TD 5801
P Hehir

Although 0° toe is the correct setting as described in the WSM (?) that was with the tire technology of the time. Mainly a nylon corded biases ply. With the advent of radial tire technology it is recommended that toe be set in at 2°. TD-4834 is set this way and I’m not experiencing any bump steer.

Bill Chasser
TD-4834
W A Chasser

2 INCHES?????? Whoa! How long are your tires lasting, Bill?
Lew Palmer

Lew,
I read that as 2 degrees.

Bill,
Did you mean in or out?

Mort
Mort Resnicoff

Lew ...2 degrees. Mort ...toe in.

Cheers

Bill Chasser
Td/c-8151
W A Chasser


I'm thinking that should be 0.2 degrees

A 26"od tyre set at 0.2 deg.total, would have 3/32" total toe which would be about normal for most older cars
The spec for MGBs which is basically the same suspension is 1/16"-3/32" total toe in
Most Bs steer best at 0-1/32" toe in

Two degrees is equal to nearly one inch toe which is way too much and can't be right

William Revit

John boy (sorry mate) can you print out this thread such as it is at this stage and show it to Peter? (For the rest of the world following this thread he's one of these guys who refuses to even look at a computer). Cheers
Peter TD 5801
P Hehir

This thread was discussed between 16/11/2019 and 19/11/2019

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