Quote:
Originally Posted by Espeefan
Impressive, but totally overkill. I like it! None the less, I just don't see any need for 9 gears. Three seems about right, and when I had a 3 speed truck, I found myself most often running in 2nd gear. It was a good in between gear. Now my latest truck has a really simple one speed planetary gear head motor and that doesn't bother me one bit. It's more compact, stronger, and can handle all kind of torque. Yes, I gave up shifting the gears, but that's one less thing to worry about, it frees up a channel on my radio, and I just never found myself shifting gears all that much anyway. It's fun for a little while, but if your driving your truck in a tight place, about the only place you do get up to top speed is in an open parking lot. Unless you've got some aux. gear reduction.
I wonder how much backlash that 9 speed has. Tamiya's 3 speeds have way to much.
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With metal gears and synchronizers backlash can be dramatically reduced because the slots in the gears and the drive dogs on the sychronisers are cut into a solid blank and can be made any size.
The plastic gears and sychronisers Tamiya use are injection molded and cross sections of injection molded items must be kept thin or the plastic will shrink considerably when it cools. Therfore the drive dogs on the synchronizers are narrow and the slots in the gears are wide (the land in between the slots is narrow). Resulting in lots of backlash....