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Author Topic: Simpler tails  (Read 1288 times)

StefanN

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Simpler tails
« on: 06 April 2020, 11:29:10 am »
Whilst fibreglass and shaping aluminium can give some lovely compound curves, I wondered if we might collect ideas for simpler techniques that give reasonable results.  To start us off, here's a couple of paper models of tails that only have simple curves.   What other examples/ideas have people got?

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Chris Brown

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Re: Simpler tails
« Reply #1 on: 06 April 2020, 07:49:02 pm »
The Morgan barrel back should be fairly straightforward.

StefanN

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Re: Simpler tails
« Reply #2 on: 06 April 2020, 11:22:34 pm »
Rolls Royce phantom tail with simple curves

StefanN

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Re: Simpler tails
« Reply #3 on: 06 April 2020, 11:31:57 pm »
MG M-type

StefanN

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Re: Simpler tails
« Reply #4 on: 06 April 2020, 11:34:15 pm »
Variation on the partial cone design

RhysN

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Re: Simpler tails
« Reply #5 on: 07 April 2020, 08:29:15 am »
I guess it comes back to choosing the inspiration car. This one was bent around the power pole outside my house, then a bit of work with the shrinker and some mole grips. The front edge was wired too. All up about an hour.
I know we all think of the really cool cars we like, practicality and engine bay heat might suggest a different top, ie open, which then means these tails aren't the best? That then means rethinking the inspiration?

TheGiantTribble

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Re: Simpler tails
« Reply #6 on: 07 April 2020, 10:57:18 am »
Liked that CK Rhys, would have been great to see it running round Stretton...you said 'The front edge was wired too' Could you expand on that please, don't know quite what you mean?

RhysN

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Re: Simpler tails
« Reply #7 on: 07 April 2020, 06:20:24 pm »
Wired edge. The raw edge of alloy is folded then a wire (in this case 3 mm ) held into place and the alloy rolled over it to form a stiffened and much stronger edge. I can write a technical "how to do " if there's any interest (as usual with almost no tools.)

TheGiantTribble

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Re: Simpler tails
« Reply #8 on: 07 April 2020, 07:21:14 pm »
Ahhhh that makes sense, knew of the technique just never gave a thought as to what it was called. And an idea of how to do it would be great, thanks

RhysN

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Re: Simpler tails
« Reply #9 on: 07 April 2020, 08:54:12 pm »
The wiring was done as shown to me by a lovely old chap, no longer with us. I made a tool from a half inch bolt. A cut in the end with a depth of 2 times the diameter of the wire is cut into the end, then one side ground away to approx the radius of the wire.If this is confusing I'll make up a dummy tool. By having the cut the right depth you just slip it over the sheet and it's an automatic gauge. Doing a very small amount at a time, on the sheet which you have annealed you just tediously work along the sheet until you have the bend at about 90 degrees. Keep the radiussed side towards the sheet, that means you get a reasonable match to the wire you are going to use. Pinch the wire in place a fair few places (several vice/mole grips) Then I just tapped a few more places to hold the wire in the correct place, and again just spent an age with hammer and dolly. Obviously the grade of alloy and annealing are pretty important. Part of mine is 1.6 and 500 and something grade and awfully hard work. It was free, so I can't complain, although I did while doing the job.
Yet another 2 tasks without any fancy gear, no bead roller, no folder, no shear, no guillotine. It can be done smiling smiley

StefanN

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Re: Simpler tails
« Reply #10 on: 08 April 2020, 08:43:25 am »
These are from Gittrevillegp.com

StefanN

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Re: Simpler tails
« Reply #11 on: 20 April 2020, 08:04:01 am »
Tail on an Austin 7 Special

StefanN

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Re: Simpler tails
« Reply #12 on: 21 April 2020, 04:37:30 pm »
Posting on behalf of Graham A.   This is the tail of his Brooklands Special.