Post by David Mitcham on Dec 10, 2018 15:04:38 GMT -5
I'm in the process of building a Parnell Lotus 25 BRM and a Rob Walker Brabham BT11 BRM. The former will be the car driven by Richard Attwood at the 1965 Monaco GP and the latter will be that of Jochen Rindt in his first Grand Prix at Austria in 1964.
I'm using Penelope Pitlane chassis and Pre-Wing bodies in both cases. The shells need some modification from the works cars in the engine cover area as they were somewhat different to accommodate the BRM V8. Here are some random photographs to show where I've got to.
Brilliant choices. One of the reasons I love the 50's to 70's era of F1 is that the grids were filled with privateer teams. One could buy a customer or last year's chassis from one builder and a motor from another and go grand prix racing funded by starting cash, prize money and some personal wealth. When present-day teams and authorities, like the FIA and Liberty (and Bernie before them), talk about the "DNA of F1" being constructor-based teams, I say that's total bullshite. There were always relatively few actual constructors compared to those customer teams who filled the grids and occasionally won grands prix, like Rob Walker and Ken Tyrrell. And didn't Frank Williams also start his long F1 history as a customer-car privateer?
David, I look forward to watching these two unique cars get built.
Post by David Mitcham on Dec 17, 2018 15:46:22 GMT -5
Thank you for the kind remarks Andi, Nigel and Stewart. You're quite right Stewart of how times have changed and F1 has become prohibitive for any non-works team - it hasn't improved things in any respect. Here are a few more photos of more progress - on the Brabham in particular. The Brabham will have spring/damper units fore and aft but I seem to have run out of springs (or lost them!) so I'm waiting for a delivery.
I think Stewart's reasoning's are our thoughts too and the popularity of the 1.5 litre/early 3 litre formula (before the advent of sponsorship) on this forum. I have a video of Ron Tauranac where he says he didn't like sponsorship at all. I have to say I am very impressed by the detail you achieve in the suspension David, and if I am to start building again soon I have to try and improve in that area. Thanks for keeping us updated. Regards Nigel
Post by David Mitcham on Dec 22, 2018 15:08:32 GMT -5
Little more progress on the Lotus and Brabham. Actually with the Lotus progress is not quite the right word. A good friend of mine pointed out that he thought the front and rear track dimensions were to narrow and kindly directed me to Doug Nye's book 'Theme Lotus' which, along with many other things, has all the dimensions/specifications for the cars. Anyway the Parnell 25 in 1965 was in B specification which means it had the Lotus 33 suspension layout as well as/because of the 13" wheels. The result was a complete rebuild of the rear and front suspension detail. The moral of this is do your research thoroughly Mitcham before starting any build. I'm particularly annoyed with myself because I do have the book but didn't bother to check it.
The Brabham has proceeded without difficulty and the springs and front suspension detail has been completed - well almost because there just isn't space to fit the front anti-rollbar.
After Christmas it will be on to driver insertion which will entail a lot of sanding to get the IM tray driver to sit low enough, gearbox casing construction, further detailing items and then a coat of primer which will reveal all the blemishes!
Wonderful work David, thanks for posting your projects. I'm starting to see some advantages to building more than one car at the same time. All the effort of gathering the required parts, materials and "tooling up" so to speak, takes so long that one might as well tackle two cars at the same time. Matt
Post by David Mitcham on Dec 30, 2018 14:54:36 GMT -5
Some more progress with the Brabham and Lotus. The suspension is finished, the gearbox casings have been made (a bit bigger than I would like) and the exhausts are in place. In both cases the gearboxes are had in place by the exhausts but I think I'll have to also attach them the the chassis. For the Brabham its straightforward as long as I can get at the crown gear as the exhausts are soldered to the chassis. For the Lotus its more difficult as the exhausts will have to be glued to the body once its painted (they exit above the horns of the monocoque and can't be attached to the chassis. This means the tail pipes (in aluminium tube) need to be removable in order to be able to install and take off the body from the chassis. Both drivers have been on severe diets to get them to sit low enough in the cockpits and in the case of Jochen Rindt I had to shorten the IM tray driver's arms as the Brabham cockpit is somewhat shorter than that of the Lotus.
Post by David Mitcham on Jan 27, 2019 14:43:26 GMT -5
The Brabham is more or less finished. I just have to true the tyres (not my favourite activity) and fine tune it. The Lotus is in the paint-shop after a second and successful attempt to paint the red stripe and nose band.
Post by David Mitcham on Jan 28, 2019 15:44:59 GMT -5
Thanks Matt. Yes, it has an aluminium tube front axle with a 1/16th piano wire inner axle which allows independent rotating front wheels. The wheels are RS Slotracing 13" wheels - I think they are more or less the same as the BWA ones. www.rsslotracing.com/parts.htm