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Bit char-g scratchbuilt chassis buildup

Posted: Fri Jan 23, 2009 5:30 am
by nonickname
Hi..I guess I'm sorta new here.

Well, being poor at the painting side of modding, I decided to look into the performance end. This is the from-scratch buildup of my new racing vehicle. The chassis is handmade from 6061 1.1mm aluminium. The gear ratios are the highest (fastest) ones, except it goes from the pinion straight to the axle, rather than through the rocker (or spur?, dunno). The motor is around the equivalent of a 2.6 (I think) and is ripped from a crazy spinny like toy. The batteries are two 150 mah cells wired in series. The motor is permanently attached, but if it burns out it will only take 5 mins with acetone to unstick and replace it. A dip switch will be added. I'm unsure on the steering configuration, I may just cheap-skate and cut the front off a clone to use, but the plans are to use the rack, wheels and wheel pins, and then wind my own copper coils and buy a rare earth magnet. I have a bit and a clone pcb, I'll try both with it and see which works best.

At the current stage of writing, it will actually be smaller than the average bit. If it turns out to stay that way I may have to mould a body :razz: .

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Yes, the axle on there at the moment only has 1 wheel. No worries, it can be replaced. I also tested the drivetrain and batteries, and caught a vid of it. The wheels seem to spin much faster than my 3.0 single celled high geared bit, so that's something. If anyone really wants me to, I'll upload the vid..but we'll see. We're also going to mandurah (rellies) for aus day, so I'll buy the magnet and wire there.

Any *constructive* comments welcome, but go easy on the noob please :-?

Re: Bit char-g scratchbuilt chassis buildup

Posted: Fri Jan 23, 2009 1:16 pm
by payaso
I'm interested in the front end, but it looks like you have a good start going.

How do you plan to charge it? And why not use the front of an SE? Propo would be a nice addition to your ride.







silla :D

Re: Bit char-g scratchbuilt chassis buildup

Posted: Fri Jan 23, 2009 6:57 pm
by sidewinder
Looks lie a good start, I'll be looking forward to updates.

Re: Bit char-g scratchbuilt chassis buildup

Posted: Fri Jan 23, 2009 10:20 pm
by crazydave
Just be careful not to short any thing on that metal chassis. I would get the motor off the chassis, or at least put some tape under it.

Re: Bit char-g scratchbuilt chassis buildup

Posted: Mon Jan 26, 2009 2:45 am
by nonickname
Thanks for the input. The motor I'm using has an isolated can (tested) and both contacts are on the endbell. I don't have a zz to tear up (more of a bit guy) so it isn't going to be propo. I'm most likely going to charge it through a Deans plug, which means I can use my peak detection rc charger for max output and battery life. Unfortunately I couldn't get a rare earth magnet, but I picked up some copper to wind coils from.