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Model Forum / Radio Controlled / Land Models / November 2003automatic transmission feasibility
Hello, has anyone ever put an automatic transmission into a rc car, or is there a source of them? Almost all multi-speed transmission are 'automatic'. The only exception that I know of is the E-Maxx, with manual shifting.  SignatureJustin Mahn remove Panties to e-mail > Hello, has anyone ever put an automatic transmission into a rc car, or is > there a source of them? how do the work then? I"m trying to put this into another project for school. Maybe there is a website with a breakdown of the parts i could figure it out. > Almost all multi-speed transmission are 'automatic'. The only exception > that I know of is the E-Maxx, with manual shifting. [quoted text clipped - 5 lines] > > Hello, has anyone ever put an automatic transmission into a rc car, or is > > there a source of them? I don't have a link to a diagram, and I'm terrible at describing these things, but here goes. The driving gears have two gears side by side of different sizes. That's gear 1 and gear 2. The driven gears also have two receiving gears, so you get two shafts with side by side gears at different ratios. The driving gears are locked to the driving shaft. The driven gears have the lower gear on a one-way bearing and the higher on a free bearing. There's a centrifugal clutch in the high gear. When the rpm is low, only the low gear will turn the shaft with the one way bearing. When the rpms get high enough, the centrifugal clutch engages the high gear. The clutch is mated to the output shaft, and when it engages, the high gear is now the driving gear, and the low gear is freewheeling faster than the output shaft thanks to the one-way bearing. That's the best I can do. SignatureJustin Mahn remove Panties to e-mail > how do the work then? I"m trying to put this into another project for > school. Maybe there is a website with a breakdown of the parts i could [quoted text clipped - 10 lines] > is > > > there a source of them? and you think you are bad at descriptions? Its perfect I get it thanks, its exactly what i was looking for. Now it a matter of building one, now this should be good haha > I don't have a link to a diagram, and I'm terrible at describing these > things, but here goes. [quoted text clipped - 31 lines] > > is > > > > there a source of them? Screw that. Look on ebay for a used tmaxx transmission. > and you think you are bad at descriptions? Its perfect I get it thanks, its > exactly what i was looking for. Now it a matter of building one, now this [quoted text clipped - 39 lines] > > > is > > > > > there a source of them? This may (or may not help.) Here is an exploded view of a truck that has a 2-speed transmission in it: http://www.duratrax.com/pdf/dtxd74-exploded.pdf This may also help. http://www.duratrax.com/pdf/dtxc9610-manual.pdf Good luck and hope this helps. >and you think you are bad at descriptions? Its perfect I get it thanks, its >exactly what i was looking for. Now it a matter of building one, now this [quoted text clipped - 39 lines] >> > is >> > > > there a source of them? what kind of range of rpm's can this shift over or is it pretty much infinatly adjustable? > This may (or may not help.) Here is an exploded view of a truck that > has a 2-speed transmission in it: [quoted text clipped - 50 lines] > >> > is > >> > > > there a source of them? as far as what springs you can find for that size and what weights you can get to fit in there, The two speed is infinitely adjustable for RPM engagement. SignatureJustin Mahn remove Panties to e-mail > what kind of range of rpm's can this shift over or is it pretty much > infinatly adjustable? [quoted text clipped - 64 lines] > > >> > is > > >> > > > there a source of them? > I don't have a link to a diagram, and I'm terrible at describing these > things, but here goes. http://www.traxxas.com/products/nitro/tmaxx/blueprints/tmaxx25-tranny-assy.pdf SignatureL.V.X., brother mouse http://www.mousetrap.net/otr/ Old Time Radio trades http://makeashorterlink.com/?K16312E06 CBS Radio Mystery Theater database http://greyhound.mousetrap.net/altus/ retired racing dog |
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