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#1
03-07-2011
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Tamiya 502x front bulk head help!
Hi,
I am wondering if anyone has managed to find a way to stop the front bulk head/ gear box housing from braking. They seem really weak and cost a fortune every time, I am almost at the point of getting rid of the car, even though I really like it! Thanks Chris 
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#2
03-07-2011
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I have started building a 502x and noticed that it was hard to install the forward top deck, and when it was installed, there was a noticeable tweak.
I'm not saying this will help reduce your front gearbox breakages, as I do not know exactly where they break, however it would not hurt as currently the top deck is putting too much stress in the g/box housing in my opinion. Also with the top deck jammed against the g/box housing, it is creating a too rigid front end and if the housing has no 'give' in it, it will just break. Where as if they were separated by just a little distance, the g/box housing would have just a little more flex and possibly reduce breakages. Anyway just my thoughts anyway, I'm liking the build so far, it looks really bling  As I was building this car, it reminded me so much of the hot bodies d4 design, and both cars seem to have weak front g/box cases.
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#3
04-07-2011
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Speedtech RC stocks the bulkhead if you want to compare pricing. How are you breaking this part?
http://www.speedtechrc.com/store/ebp...d=972&id=10531
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#4
05-07-2011
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Quote:
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#6
05-07-2011
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Hi,
Chris here agin the Bulk heads always shear at the bottom set of screws to hold the shock tower on. Yeah that is the flaming problem £40 (by the time you get them into the uk) every time so person leaves there car in the middle of the track! Any big front impact brakes them! I am almost at the point of getting rid of the car! It is just silly I have broken 3 of these! But haven't broken anything else, I would consider myself to be dquite a good driver, good knows if you are a beginner it would cost you a fortune! Would someone please make aluminum ones! Or would Tamiya please just sell that front bulk head on its own! Rather then all the gearbox bits costing a fortune! Chris
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#7
05-07-2011
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When i first built my 502 i could see that the front gearbox tops were weak so i did a little mod (as per pic below)
I cut a small piece of hard brass, cut and bent it to shape and fitted 2 longer screws through the shock tower and threaded into the brass. This worked as a strengthener and supported the 2 lugs in which the shock tower bolts to. Ive run the car now over 50 times both indoors and out and ive yet to break it, and it has taken a real beating. If anybody is interested i can supply a few more of these for around £8 each. P.M me if interested and ill get a batch made up near the end of the week. 
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#9
05-07-2011
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Great thinking,
Are the top nuts missing on purpose? Does that allow some flex or something? I got into RC Buggys back in the days when cars still had front bumpers (turbo Optima). Looking back, that bumper was not such a bad idea. It's not like it weighed a whole lot. Sell lots of your brass mods before someone makes them in blue.....
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#10
05-07-2011
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No, the top nuts arent missing, instead i tapped thread into the brass itself, but as it threads into the bulkhead anyway, it doesn't really require a very strong fixing onto the brass.
Also, the nuts are only protruding as i couldn't be bothered to unwind them off just to trim them down. lol
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