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Wheelarch openings in buck
Looking for some advice please.
I'm not far off starting the buck for the Group 5 BMW bodykit, with the panels to be made in 1.2 or 1.6 5005 aluminium. The kit will closely follow the photo below of an original factory car. A buddy has just about convinced me of using MDF for the contour stations, rather than the wireframe I had planned. What I'm not sure about however, is the best way to form up the various large vent openings and the wheelarch openings. The original bodykits were glass (1970's) and the edges of the openings need to be rolled, rather than square returns or a wired edge. Given that the vent openings (especially the radiator openings in the rear guards) look pretty floppy, I thought that I would probably need to make an alloy tube frame for the perimeter. This in turn would support a mesh insert which would help triangulate the hole. Would you recommend incorporating a metal edge or laminated MDF edge for the apertures which could be used as a hammerform, or would you simply eyeball them and handform? I guess that given that the car is going to be used in anger, that I may get the opportunity to make them more than once... Thanks. b4362.jpg Progress shot of our car 20160312_140119.jpg
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Richard "I know nothing. I from Barcelona" (Manuel - Fawlty Towers) Link to our racecar project https://www.facebook.com/pages/Elan-...ab=public&view |
#2
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If the car is going to be used in anger l would make the kit up in glass and hang onto the molds.
Will
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Here to learn. William Pointer |
#3
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Richard ..
I would use a ally rod (not tube) to make the opening, and simply turn the ally panel around the opening (just like a wire rod just a bit ticker) Peter
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P.Tommasini Metalshaping tools and dvds www.handbuilt.net.au Metalshaping clip on youtube http://www.youtube.com/watch?v=WEAh91hodPg Making Monaro Quarter panel: http://www.youtube.com/watch?v=KIpOhz0uGRM |
#4
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i use for such work --sikablock---- there is a wide range of model-bords and also tooling-bords with diff hardness, look if you can use this, it is perfekt for prototype-creations, easy to get in form with Hand or mill
http://prototypematerials.com/machin...styling-board/
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Just Ernst |
#5
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Richard,
What do the wheelhouses look like, if any? You mention flexy and so thinking wheelhouse sections act as interior stiffeners ..... ?
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
#6
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Thanks Will, but the idea is at least to make them in alloy first. I may be tempted to take some moulds from them, but am starting from a standard shell, so don't have anything at all currently..
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Richard "I know nothing. I from Barcelona" (Manuel - Fawlty Towers) Link to our racecar project https://www.facebook.com/pages/Elan-...ab=public&view |
#7
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Thanks Peter. Understand the thinking here, but was more wondering about creating a hard edge in the buck to start the process?
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Richard "I know nothing. I from Barcelona" (Manuel - Fawlty Towers) Link to our racecar project https://www.facebook.com/pages/Elan-...ab=public&view |
#8
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Quote:
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Richard "I know nothing. I from Barcelona" (Manuel - Fawlty Towers) Link to our racecar project https://www.facebook.com/pages/Elan-...ab=public&view |
#9
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Quote:
Peter
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P.Tommasini Metalshaping tools and dvds www.handbuilt.net.au Metalshaping clip on youtube http://www.youtube.com/watch?v=WEAh91hodPg Making Monaro Quarter panel: http://www.youtube.com/watch?v=KIpOhz0uGRM |
#10
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Quote:
But was more head scratching re the buck question around the openings. Form something up to the finished shape, so that you could belt the ali around like a hammerform? Realise you could only take any return to 90 degrees, otherwise there will be tears in trying to lift it from the buck. Looking at Berhard's Alfa buck recently posted, it would seems that the Gods don't bother in this area and simply freeform? Photo 242.jpg bis.jpg
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Richard "I know nothing. I from Barcelona" (Manuel - Fawlty Towers) Link to our racecar project https://www.facebook.com/pages/Elan-...ab=public&view Last edited by skintkarter; 03-31-2016 at 01:04 AM. |
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