Quote:
Originally Posted by Chris Mounts
Adjusting the height reduce the scrub effect of trying to turn with 3 wheels on the ground. Pneumatics really need a larger drop center than the stock chassis has.
With time so short the real question is what parts do you have on hand? Are you using the AM14U3 chassis?
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In addition to telling us how much your center wheel is lowered (you really need to be able to see that front wheels off the floor when your rear wheels are on the floor and vice versa). I am still not clear what your ratio is from the CIM to the Wheels, specifically what is the ratio from the Toughbox to the wheels.
Have you used JVN's spreadsheet to figure out your top speeds and pushing current? If not, you really should make this a standard thing you do going forward.
If you are using chain*, you have some ABS sheets around and access to an Epilog laser cutter, you can make new wheel sprockets in an afternoon. With the exception of really small sprockets (<20 teeth or so), I've used nothing but ABS sprockets for years now.
Back to the power draw issues, in the short term you can try adding a little extra air to the middle wheel to increases the rock. You can also do things to reduce the grippiness of the front and back tires (test it with some duct tape).
Dr. Joe J.
*I know that a lot of smart folk really like belts but I am just not there yet because of the freedom to change sprockets without needing new belts. After seeing so many belt drive lifts last year, I think I am sold when it comes to lifts but for drives, I still like chain.