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Gordon England Brooklands body - Printable Version +- Austinsevenfriends (https://www.austinsevenfriends.co.uk/forum) +-- Forum: Austin Seven Friends Forum (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=1) +--- Forum: Forum chat... (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=14) +--- Thread: Gordon England Brooklands body (/showthread.php?tid=312) |
Gordon England Brooklands body - John Mims - 08-10-2017 Does anybody know if the GE Brooklands body was supported to the rear on special chassis extensions? The frame looks as if it was pretty rigid. Was it sufficiently so for the tail to be cantilevered out? John RE: Gordon England Brooklands body - Ian Williams - 08-10-2017 I do not believe it was supported by any extensions John RE: Gordon England Brooklands body - John Mims - 08-10-2017 Thanks, Ian. John RE: Gordon England Brooklands body - Malcolm Parker - 09-10-2017 The Brooklands body had a box section along the full length. This had a long teardrop shape aperture through which the axle tubes projected. The body was fixed to the chassis crossmembers by brackets located at the front of the box section, and at the front end of the teardrop hole. There was no support for the rear of the body other than from the rear crossmember. The body frame is however very rigid if correctly made. RE: Gordon England Brooklands body - AllAlloyCup - 09-10-2017 For what it's worth the GE Cup Model rear body frame was also cantilevered out from the rear chassis cross member. There are Forth Railway Bridge type ash members sandwiched between the double skinned plywood sills. These plus the ply bulkheads make the rear body surprisingly rigid. Regards Bill G RE: Gordon England Brooklands body - Ian Williams - 09-10-2017 One should remember though that the current replicas are a modern take on the construction methods employed on the genuine cars. They are probably more or less correct and the evidence from cup models and GE's patent drawings do appear to suggest this beam arrangement is correct. However one should remember NO genuine Brooklands body's or parts of a Brooklands body are known to exist, the replicas are all based on a design devised by Tom Abernathy when he built his first recreation. RE: Gordon England Brooklands body - tom abernethy - 09-10-2017 The original Brooklands bodies were of a traditional frame and stringer construction. They did not have a box section running the full length and consequently sagged very badly due to the cut out for the back axle and the huge overhang. This can be seen in some of the period photographs. The full length box section was my solution to the problem and used on my first Brooklands replica in 1978 using my experience with that type of construction from the later Cup Model. The Cup Model did not have a Forth Bridge type of framework within the box section but merely hard points to take the body and wing mounting brackets. Regards, Tom. RE: Gordon England Brooklands body - AllAlloyCup - 09-10-2017 IMG_0146.JPG (Size: 134.94 KB / Downloads: 813) IMG_0149.JPG (Size: 117.07 KB / Downloads: 814) Tom has built 30? more Cups than I have ... But the internal framing in my Cup sills Reminded me of the Cantilevers in the FRB! The little block in my frame is a personal addition along with A lot of Gorilla glue, after a visit to the Morgan factory. Plus my frame is 1" thick ash rather than 3/4" of the original The inside metal body mounts ( copied from originals) are screwed through the inner ply into the ash structures hidden in the sills. On normal Cups the outer skin is also ply, but on Mine it's 18swg alloy on some panels but 16swg on the scuttle. My project is GE Cup Special, rather than a Replica, so it has a 1925 chassis, but has a coil engine and Will have all alloy bodywork and wings. Regards Bill Ps I am old enough to remember seeing Tom's first Brooklands Mockup in his conservatory all those years ago! RE: Gordon England Brooklands body - John Mims - 10-10-2017 Thank you all very much for that mine of information. The photographs of frames that I have seen must have followed your lead, Tom, as they appeared to have the box section you describe. Presumably the plywood skins can be reasonably thin - 6mm? I should say that I'm not intending to attempt a Brooklands replica, but am intrigued by the principles of composite wooden structures, including, for example, the early Marcos and the Tryane. Thanks again John RE: Gordon England Brooklands body - Ian Williams - 11-10-2017 (09-10-2017, 10:09 PM)tom abernethy Wrote: The original Brooklands bodies were of a traditional frame and stringer construction. They did not have a box section running the full length and consequently sagged very badly due to the cut out for the back axle and the huge overhang. This can be seen in some of the period photographs. Interesting Tom, do you have any evidence of this frame and stringer construction that you would be willing to share? I have tried for years to unearth a picture of a genuine Brooklands frame, the closest I have come is this picture form Austin Harris, it depicts GE's special from the 1924 JCC200, the lower rail appears identical to the contemporary pre production Brooklands body and seems to be a box beam. 1924 JCC 200.jpg (Size: 167.54 KB / Downloads: 693) |