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Thread: Chevron B20

Started 3 years, 3 months ago by allenbrown
B20-72-6 definitely stays in France in 1973. At Mont Dore, Damiasin's car is "Chevron B20 ex-Maublanc". Maublanc may have started the 1973 season in this car until his Chevron-BMW was ready. This may be a red herring but both Maublanc and Mieusset have B25-BMWs and the livery on the cars appear different. It must be the same car, mustn't it... Allen
Site: 10 Tenths Motorsport  10 Tenths Motorsport - site profile
Forum: The Chassis History Archive  The Chassis History Archive - forum profile
Total authors: 11 authors
Total thread posts: 37 posts
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Other posts in this thread:

Steve Marschman replied 3 years, 3 months ago
Harry and I have exchanged email messages in the past, and I believe the car I have sitting here in my garage is B20-72-3. I called Fred Opert about it, but he was less than talkative (probably has too many people calling him about old cars). This car is the one with the brass tag on the top of the roll loop that lists a number of "72FB14." It also has the ugly 1970's air brushed paint scheme ...

Harry Hickling replied 3 years, 2 months ago
Hi Steve, yes I tried very hard to sort this out for you, and before you I worked on it for Jeff McKay. But I couldn't get anywhere with it. The difficulty I have is getting to something definitive enough to be able to say yes it is chassis xx. If you come across any other clues please let us know and I will keep on it for you. By the way the car could be B20-72-3 but it could also be something ...

allenbrown replied 3 years, 2 months ago
The brass tag is a SCCS registration number. The number '14' is key to this as it is either the entry number of the car when first seen (less likely) or the 14th car to be registered (more likely). Either way, that's useful. If it was the 14th car to be registered in 1972 then it must have been at Bogota, which means it must be the Bobby Brown B20-71-1 as that was the only B20 present. We need ...

Chris Townsend replied 3 years, 2 months ago
Do not think that this can be the Brown Bogota chassis, because that is fairly traceble. [Though there may have been more than one B20 at Bogota if the entry list is to be believed...] My question here is was Bogota SCCA sanctioned? The first round in the SCCA pro series at Laguna has only one B20, Brown's Opert car, but this is in May, giving plenty of time for a newer chassis [03 for example...

allenbrown replied 3 years, 2 months ago
Good point. The SCCA weren't necessarily involved at Bogota so this could well be one of Opert's 72 cars. Opert had cars at the JAF GP in Japan just four days before Laguna Seca so we could be reasonably confident that Brown's Fuji car was a different one to his Laguna car.

Chris Townsend replied 3 years, 2 months ago
The entry for Bogota shows a number of Opert B20s beside Browns. We had always assumed that of these only the 71/1 development car shows up and is run for Brown with Opert taking B18s instead. Now I seem to recall from somewhere that this car was meant to have run in its original fibreglass even without gel coat. However, if you look at the picture Allen sent me of Gus Hutchison and Bobby Brown ...

allenbrown replied 3 years, 2 months ago
Chris Have I seen the entry list for Bogota? We don't have entry list details on the site? Allen

Steve Marschman replied 3 years, 2 months ago
I'll have to post up some pictures of my car this next week. Sorry I wasn't able to get to back to this thread sooner. I do believe Harry is correct in that only the nose and the wing were different. I have seen other B20 pictures and it appears my front suspension is strictly B20. There does not appear to be any other mods to the front. Were the front brake rotors vented on the B20? That's all ...

Harry Hickling replied 3 years, 2 months ago
Steve, Allen and Chris. This looks consistent with my info. Standard B20: - Front Ventilated Disk. - Rear Solid Disk. - Girling AR2 Brake Calipers. - 2 Variants of Oil Catch Tanks that I know of. (I have seen the drawings of those). - Chassis Plaque (You don't have). Is located on the inside of the alloy tub on the top left hand side of the driver just before the instrument panel. I'm not ...

Steve Marschman replied 3 years, 2 months ago
Hopefully here are a few images from my Chevron B20. The bodywork appears to have been painted three times. First layer is blue, covered with dark red primer and repainted black, followed by light gray primer then surfaced with the white and air-brushed graphics. However, is this cockpit bodywork the correct one for the B20? We already know it has a different nose piece. I looked for a stenciled ...

 

Top contributing authors

Name
Posts
allenbrown
11
user's latest post:
Chevron B20 - Page 5 - 10 Tenths...
Published (2009-10-18 15:01:00)
Quote: Originally Posted by Mick Henderson I did see a results website which included chassis numbers, when I find it again I'll post it, racingdatabase.com seems to be pretty comprehensive although I know nothing about their source material. Maybe this was www.oldracingcars.com/atlantic/ .
Chris Townsend
7
user's latest post:
Chevron B20
Published (2007-09-20 17:13:00)
I think we now have all the evidence we need to concluded that Steve Marchmann's B20 is indeed ex Bobby Brown, and indeed ex Cobb and ex Mead! Assiduous reading of ads in Autoweek has unearthed some new clues, so let's work backwards 1978 we have the car in Houston with Paul Lindell for sale AW 28.2.76 p. 22 by Richard Jackson 12888 Noel Road, #2085 Dallas 75320 is a B20 with t/c and BDA photo shows, car has race no 2 on it, red or...
Mick Henderson
6
user's latest post:
Chevron B20 - Page 6 - 10 Tenths...
Published (2009-10-20 20:49:00)
Thanks Allen, I realised it was formula2.net that I was recalling. The only B20 chassis no quoted that I noticed is Peter Gethin's car, although it's oddly listed as B20.F2.2. I made a mistake in the description of my car, the roll hoop cross tube is higher, not lower as I'd stated. Do we have a list of the known surviving cars & their current owners? It'd be good to be able to share information & help...
Steve Marschman
5
user's latest post:
Chevron B20
Published (2007-09-24 17:55:00)
Chris... you are a god! Thanks! Steve ...car is now safe and sound in Idaho Falls, Idaho after 1900 miles cross country in the back of a moving trailer. I'm still going to put the car together with a BDD; I think I'll assemble the Brian Hart t/c head on top of the LA block and keep it for show.
Harry Hickling
4
user's latest post:
Chevron B20 - Page 6 - 10 Tenths...
Published (2009-10-30 04:48:00)
Hi Dan there is no problem with this. Both of the B20s have survived or at least one rebuilt. Allen Brown has also referred to the incident where the Alex Lowe B20 was written off at Oulton Park in 1980. This does raise some questions about the extent of the write off and restoration, but the two cars are as follows. We have to remember though - what might seem like a write off to the untrained observer, in fact can be readily repaired with...
IANHEB
1
user's latest post:
Chevron B20
Published (2006-10-10 15:22:00)
Harry/Steve, AM 72 3 was Arch Motor's way of recording that it was the 3rd B20 chassis/frame that they constructed for Chevron in 1972.AM were also constructing the B21 chassis, but I think that they were numbered in a different sequence e.g. AM 72 B21 3. However,it does not necessarily mean that Chevron used the third B20 chassis from AM to build their third complete car in 1972,being B20-72-3,as there could well have been a minimum...
chrisks
1
user's latest post:
Chevron B20
Published (2007-07-12 17:13:00)
Dozens of original B20 drawing here if you need any info!!
merriewells
1
user's latest post:
Chevron B20
Published (2007-09-09 21:43:00)
Just curious if anyone has any info on these two models that were built for F-B in the states...........M.W.
simon langman
1
user's latest post:
Chevron B20
Published (2007-09-17 22:57:00)
i belive that i picked that car up in belguim around 7 years ago for a dealer in banbury(porsche warehouse)it was complete with engine and box and looked like the guy had left it on the trailer for many years just with a cover over it.
Henk Vasmel
1
user's latest post:
Chevron B20
Published (2008-02-04 23:39:00)
I have an entry for Bob Brown in a Chevron B20, on May 3rd, 1972, in the Japanese Grand Prix. Entrant Fred Opert, Number (2), started 11th (out of 11), no result available.

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