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Quote: "You guys are scaring me, my design uses the 2003 bosch and tranny as drive. Are you sure it isn't good enough? If it isn't it means a big redesign of the base....Just how much slop are we talking?"
It's a pretty big deal because there is very little play in a good window motor but I had a gear set that was sloppy (about an inch of free movement as measured at the floor) and it was a lot harder to keep balance and look smooth. That is because by the time you make a correction it may have to take all the slack out of the drive train first and that means more time before the correction is actually stopping the fallover. Also... the faster your machine is the more important it is not to have slop because tall gearing amplifies the problem, the wheels will travel further freely
with that slop or backlash in the transmission.
If I remember right, the 2003 drill had about 20 or 30 degrees of rotational free play? Check it out maybe yours are better.
All this means less if you are always on the go, and most noticeable when stopped and balancing.
Dave
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