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#1
10-12-2010
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Anyone designed a touring car?
Has anyone built up a competitive touring car - either from scratch with your own chassis etc. or as a mashup of other car parts?
I have always thought that I would like to put together my own touring car and would like to talk to others about tools that they have used for cutting carbon fibre, milling bulkheads etc. 
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#2
10-12-2010
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This is the only guy on oople who has done any TC mods, link here:
http://www.oople.com/forums/showthread.php?t=34837 Maybe worth asking on Rc tec or rcracechat, they love a bit a of touring cars! 
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#4
10-12-2010
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I've cut plenty of carbon fibre. The process is
- Draw it on a CAD package (I use the free version of DraftIT). - Print it out and stick it to the carbon using Prit Stick. - Centre punch the holes using an optical centre punch - Centre-drill the holes using a centre drill - Drill the holes using a nice sharp drill. Use a slow feed to avoid tearing the carbon. - Cut the edges using a dremel and normal cutting disks. You can do very good straight edges and curves if you take your time. Bulkheads are more difficult; you'll need a mill and a lot of skill I reckon! The main reason you don't see many scratch built TCs these days is that there's no way you'll make one better than the manufacturers can, with all of their facilities and top drivers giving input. The layouts and components on all the cars have evolved to an 'optimal' layout after 15 years of running. For the project to be worth it you'd have to do something like a FWD or RWD, then you might be able to make something better than what you could buy.
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#5
10-12-2010
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Sorry Fabs! Lets see then then!
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#6
10-12-2010
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i recently made a carbon tub chassis for my fk05 that moves things about slightly. motor is more central and lipo further out to balance chassis without weights. much stiffer in the vertical plane too, but softer when twisted. chassis has a thicker centre spine and thinner wings. battery location is also moulded into the chassis so the strap can be run looser so as to not affect the flex. handling is very similar to the standard fk05, at moment its a little more snappy on the rear and has more steering but i have not messed with the setup yet, in fact it needs decent diffs and new belts really before i start messing with setup as they are really ropey.
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#7
17-12-2010
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Quote:
Might even have a picture of it lying around ... but won`t publish it without Fabs conscent 
__________________
aka Ludo
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#8
11-12-2010
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ive made 2 touring cars , 1 2wd buggy , a very good micro and a very over engineered mardave v12 also i have designed 1 4wd buggy plus shock towers for the pred but as i race 4 durango think they will say as a design
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#9
11-12-2010
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I really am very impressed with what people have done... thanks for sharing.
On the practical side aside from CAD for design there are two things that I would need to be able to do in some form; Cut carbon fibre (for the chassis) And milling for bulkheads etc. Taking each of these; is it possible to cut and drill carbon fibre using a dremel with cutting parts and drilling with a normal drill (obviously using a face mask etc. For safety) Is it possible to mill parts in a home workshop - what tools or machinery would I need to look at - is it madly expensive? Thanks for the info and ideas so far!
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#10
11-12-2010
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I forgot I made this too, its a Pro 4 cut down and flipped to make a FWD Mini, then rebuild with spares from my Cyclone pitbox. It was still 190mm but had a wheelbase of 210mm, so looked a bit Mad Max, but handled really well. All done with a Dremel and careful measuring. The chassis was chopped and reused as the servo mount.
         Got told off for running it against Tamiya Minis at my local club though.... 
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#11
12-12-2010
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I have designed and built off-road r/c cars and have looked seriously into designing a on-road touring car.
Even though my designs are "out-of-the-box" I have yet been able to come up with a design that would be different AND better then the current designs available on the market. That's the problem... 1/10th touring car is a very mature racing class with many years of R&D put into it. Like Dale said.. They have pretty much optimized the performance of these cars except for a few small changes. I don't think it gets much better then the Team Magic E4.
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#12
13-12-2010
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I've made my own cars in the past. Made a Nitro TC back in the late 90's, Which won races and was better (I felt) than anything you coluld buy until the mini 1/8th cars started coming out. I've got pictures somewhere.....
I also made a TC a couple of years agao, based on a Schumacher Mi3.5, but a lot lighter with lower center og gravity and different flex charicteristics. Getting the bulkheads made in alloy was a bit hard though. Sometimes think of doing another one simlar (not a schumaher though!). There are lots of great cars out there, but none I've bought so far have been perfect! Mine went through a few stages and picked up good idea from other cars as I went...   
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