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Old 04-20-2012, 07:22 AM   #31
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Little bit of good news; the belts are actually so tight that the easiest solution is just to add 1 tooth to the front and rear belts. The diff cams should have enough adjustment to allow the v1 chassis to run with the longer belts. It will probably need the rear belt on the tightest setting and the front on the loosest, so for the CF chassis I'll move the rear layshaft forwards slightly to even things out and leave a decent range of adjustment for each belt.

New longer belts are on order, so when these arrive (probably in a day or two given how quick they were last time) I'll get them on, then drill the layshafts which is the last difficult job remaining (although I do have a few tips on using a jig to make it easier).

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Old 04-20-2012, 07:32 AM   #32
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i am more excited to see your design coming to life, and the other guy with the TC-9, than any other new car on the market today ! i think the science behind this project is RIGHT !
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Old 04-20-2012, 07:38 AM   #33
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although I do appreciate people 'making' their own cars, the central layout design has been around for a while, E4, jrxs, and tamiyas ta06, they still have not provided any performance/handling advantage over the tradition touring car layout.
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Old 04-20-2012, 07:48 AM   #34
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fantastic design! well done. looking forward to seeing the final product.
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Old 04-20-2012, 07:57 AM   #35
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Awesome man! I cant wait to hear how it drives.
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Old 04-20-2012, 09:01 AM   #36
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Quote:
Originally Posted by captain stacker View Post
although I do appreciate people 'making' their own cars, the central layout design has been around for a while, E4, jrxs, and tamiyas ta06, they still have not provided any performance/handling advantage over the tradition touring car layout.
Thats because those cars are all flawed. To centralise the weight side-to-side, they have spread it out front-to-back, which is actually worse. So you're right, in that the previous 'centralised' attempts are not an improvement over the more popular touring cars.

But with a shorty lipo things become more interesting, because you can centralise the weight in all directions
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Old 04-20-2012, 05:53 PM   #37
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Really Interesting!
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Old 04-20-2012, 09:11 PM   #38
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Quote:
Originally Posted by captain stacker View Post
although I do appreciate people 'making' their own cars, the central layout design has been around for a while, E4, jrxs, and tamiyas ta06, they still have not provided any performance/handling advantage over the tradition touring car layout.
you are wrong there. i guess you are not observant enough why those cars did not provide an advantage. i will list the reasons for you

JRXS - in order to get the belts on the extreme sides of the chassis to place the motor and the battery in the middle, the diff had to be very long, causing the bulkheads to be spaced far apart. becuase of that the arms and camber links had to be VERY short, compromising the suspension.

The E4.. the motor is in the middle, but the battery isnt, its partially offsetted if you look carefully. and becuase the battery had to be top loaded, everytime the upper deck had to be unscrewed when you need to swap the battery, causing your tweak settings to mess up. Also if you notice, the upper camber links arent exactly very long.

The TA06. Motor in the middle, and battery in the middle, but the car requires a LOT of hop ups to make it work and the rear weight bias is still too much, becuase the motor is far rearwards. the suspension arms are good, but the front IFS shock layout isnt as good as a standup shock tower type.

Dale's design addresses all these problems as i can see. He uses TC6 suspension which are as modern as can be, he move the motor more forward, to make the F-R balance 50-50.
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Old 04-29-2012, 11:14 AM   #39
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Small update. The new longer belts now fitted; the rear belt is a little loose, and the front/middle a little tight (even with the diff cams adjusted as much as possible), so I'll move the main layshaft forwards a touch for the final version and it should be spot on.

I've also managed to cross-drill the layshafts, so the pulleys are now properly attached (no more blu tack!). This could have been a real sticking point as drilling through round hardened-steel bar is far from easy (I just have a drill press, nothing fancy), but managed to make up a jig so I can now drill it accurately each time.

Next stage; top deck and lipo holders.
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New car project TC6-C-20120429_180011a.jpg   New car project TC6-C-20120429_175845.jpg  
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Old 04-29-2012, 11:28 AM   #40
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Battery in the E4 actually drops out the bottom on its own sled. don't have to touch the top deck. no comment on the camber length but they look about as long as anyone's with narrow bulkheads and long arms.
unfortunately, the e4, like the ta06 requires a lot of aftermarket to survive but its a nice car. handles well, easy to drive.
this is looking pretty good. did you make all your own bulkheads or use oem parts from something else?

I might do something similar to my tc5 just cause, but i have so many spare parts and bulkheads for my e4 that i wont really have to make anything.
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Old 04-29-2012, 12:37 PM   #41
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You are the man.
How smooth is the drivetrain compere to 2 belt car ??
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Old 04-29-2012, 02:21 PM   #42
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Quote:
Originally Posted by valk View Post
this is looking pretty good. did you make all your own bulkheads or use oem parts from something else?
The silver bulkheads and motor mount are XRay parts, with some modifications. Much cheaper and easier than making them from scratch. The rest is standard TC6.

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You are the man.
How smooth is the drivetrain compere to 2 belt car ??
Jerzi
At the moment its a bit tight, partly because the front belts are too tight, but also because the belts are a bit stiffer than the ones normally used on TCs. So once the tension is sorted out and the belts have had a chance to bed in it should be pretty decent. It's never going to feel as free as a 2-belt car, but I doubt it will be noticable on track.
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Old 04-29-2012, 02:46 PM   #43
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Great thread- subscribed.

Almost makes up for the "which car should I buy" threads that litter the forum.
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Old 05-01-2012, 09:57 AM   #44
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Nice work Dale, been following the thread, but wanted to comment so I see the updates

What belt length/teeth count are you uisng or need? I have accumilated a large database of belt lengths etc. I used the stiffer ones to get the right count and then manged to find some RC ones - it really freed up the transmission nicely. I'm sure you've done the research, but the offer's there if you need it.

I've been getting a few bits made up from Fibre-Lyte lately, their turnaround and quailty is great, it really brings the project to life to get some sexy CF on the car

Look foward to the next update.

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Old 05-01-2012, 12:45 PM   #45
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Cool! Looks like a solid chassis with improved handling. Eager to hear how it works out.
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