6 replies to this topic

[Dennis David]

Hi,

I need the following information for the BRM Type 25 sometimes referred to as P25.

Wheelbase
Track (Front)
Track (Rear)

[Alan Cox]

In BRM vol 1, DCN cites 7ft 3in (later 7ft 6in) as the wheelbase dimension and front track as 4ft 4in and rear track 4ft 2in.

[D-Type]

DSJ has 7ft 6in for the 1955 car in his Racing Car Pocket Book. If that's correct, the 3in lengthening must have happened very early in the car's development.

[Dennis David]

Great, thanks guys. This info will be used in our slot car race. I could use the same dimensions for:

Connaught B Type
ERA R4D

Edited by Dennis David, 06 May 2013 - 01:39.

[D-Type]

Connaught B Type
Wheelbase 7' 6" Track front & rear 4' 2" (Hodges Famous Racing Cars)
Whelbase 7' 6" (Jenkinson Racing Car Pocket Book)

ERA R4D
I don't have anything, but for a B Type which might be the same as R4D was originally a B-Type
Wheelbase 8'0" Track front 4' 4 ¹/₂" rear 4' 0" (Hodges Famous Racing Cars)
Whelbase 7' 10" (Jenkinson Racing Car Pocket Book)

But I'm sure someone has the Weguilin book or something definitive

[kayemod]

Great, thanks guys. This info will be used in our slot car race. I could use the same dimensions for:

Connaught B Type
ERA R4D

Dimly remembered from my far-away slot racing days, we were allowed 1/16th of an inch tolerance on all dimensions, is it the same with you? What happened though, was that to gain even the smallest performance advantage, almost everyone built to the outer limits of that tolerance, both for track/wheelbase, guide lead, tyre sizes, ground clearance, in fact just about everything, so the scrutineer's job was never easy.

[Dennis David]

It's especially hard in the United States because we're attempting something new here and it's hard to source the parts. We'll go with best effort for now.