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MiggzFSU
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Hey guys So for the last 2 weeks iv been searching and looking for fenders that are in carbon to see how other people have done them. As well as looking at this fender for hours and i cant seem to get the angles and how i would go about it. Here is the fender with the mounting points |
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Hanaldo
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Pretty straight forward mate, main body of the fender is one piece, brackets will need barriers. You can probably make the top bracket and the main fender together, then the bottom bracket and the front and back brackets can be done separately.
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MiggzFSU
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perfect thanks mate would you make the brackets out of cf as well or would you make them out of metal? then next question, how many sheets of cr would one use?
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Hanaldo
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Definitely out of carbon. Just to clarify, you make the whole thing as one piece, including the brackets. You just make a split mould so that you can disassemble the mould around the mechanical locks. As for how many layers, is this a street or track only car? If it's track only, I'd just do one layer of 200g and one layer of 450g. Put an extra 2 layers of 450g on the brackets. If it's a street driven car, I'd advise a thickness of at least 3mm, and I would do that as a cored laminate. So one layer of 200g carbon, one layer of 3mm Soric or 3D PET Core (trim it just short of the edges of your part so it isn't exposed), and another layer 200g. Make the brackets solid carbon with no core, one layer 200 and 3 layers 450.
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MiggzFSU
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thank you so much i really appreciate the help
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MiggzFSU
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Group: Forum Members
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thanks for the help guys this is how im doing it, dont know if its right but suppose inn see once its done. im doing the face and the bottom mounts one piece, then the top and back in another piece |
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ChrisR
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You've got a lot of voids / bridging going on there, you might want to fix them before you lay up the next few layers
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Hanaldo
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Yeh those voids will cause you some problems if you don't fix them now. Multi-axial fabric isn't wonderful for the sort of shape you've got there, it does like to bridge. What weight fabrics did you use and how many layers? I think it might also be a bit light, you don't want your mould to be too flimsy.
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MiggzFSU
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Group: Forum Members
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thanks for the feedback guys iv corrected the voids and bridging as well as i could, that last pic was only 1 layer light strand and 1 layer of the heavier one, iv added 2 more layers of the heavier since the pic was taken . Sorry about the quality of this mold its my first attempt at this. i have added the other 2 parts last night and tonight ill try pull it out the mould. There might be a issue with getting it out thou as i only did a layer of release , 2 wax coats then a layer of release. So i can see myself redoing this one.
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Hanaldo
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Don't apply chemical release agent over the top of wax!!! It's ok to add wax on top of a solvent based release agent, but you can't put a solvent release agent on top of wax, it will dissolve the wax and contaminate the underlying release agent. With any lucky you might get away with it, but just for future knowledge! It's always always at least 4 coats of chemical release agent, and then you can do a couple coats of wax on top of that to increase the surface tension then you can do that, buy remember to buff as light as possible, don't buff off your release agent.
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