Posted April 27, 20231 yr Now that uni's drawing to a close I've got a li'l time to get some building done, so I've started working on another tow truck. This is what I've got so far. 6x6 with rear and central diff locks (the latter has yet to be implemented); drive powered by 4 XL motors geared up 3:1; servo mounted directly on the front axle, which includes Ackermann steering. It's designed for Claas tyres. Nothing fancy but it should be kid-proof.
April 27, 20231 yr Looking good, but I wouldn't trust the U-joints to switch on diffs so directly, I would give it a higher ratio or use wave selectors.
April 27, 20231 yr Four XL motors should provide plenty of torque and the diff locks on the rear and center axles are a great idea! Are you planning on a winch of some kind for the body? Also, it looks like your front axle is 1 unit higher than the rear/center? Is this by design or is it just the camera angle?
April 28, 20231 yr Author 18 hours ago, TexasEngineer454 said: Are you planning on a winch of some kind for the body? Also, it looks like your front axle is 1 unit higher than the rear/center? Is this by design or is it just the camera angle? There'll probably be a bunch of functions, including a front winch. The offset must be some optical effect - I'm the world's worst camera wielder 17 hours ago, Zerobricks said: Also what's keeping your shock absorbers from sliding off the axles? The model's not being designed for off-roading but just to overcome some basic indoor obstacles, so I don't expect a lot of jolting. Hopefully the weight of the chassis and bodywork'll be enough to keep the shock absorbers in place. If they start slipping out I'll rework the axles or be a lazy sod and resort to piano wire or elastic bands.
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