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8 studs wide pendular steered and driven axle
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This my idea of a very small pendular driven and steered axle for mini trial trucks or any other vehicles. I tested it and although it is pendular (all the weight of the vehicle on the front axle) there is very little or no friction due to the small mass of such a small scale vehicle. Reliable too. I tested it in a 1 kg heavy rc offroad truck on heavy terrain and had no problem. The only slight issue with it is the abscence of a diff so in a very tight turn there is some tension in the axle. Other than that I think of it as a very usable, simple (and with common parts)solution for an awd vehicle.
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Comments

 I like it 
  September 4, 2012
I've seen very similar designs, but probably this is the most compact I've ever seen. Great job!
 I made it 
  June 3, 2012
Quoting Max The Owl @EFFEUNO 471 Does this mean that the 8 tooth gear on the very top is actually connected to a worm gear? That would explain the black rod sticking out one side of the axle. If that is the case, then how does the steering work? I understand that the clutch gear is not actually attached to the black rod, but then how is it connected to the steering if nothing is turning the clutch gear?
Yes thats right there is a worm gear that drives the 8 tooth gear. The clutch gear sits on the drive axle and moves the steering rack and it can be turned by a 16 tooth gear mounted above it on the chassis. These will always be in allignment(the rack,the clutch gear and the 16 tooth gear above it) because when the front axle with the wheels moves due to its pendularity, the movement will be around the main drive axle which passes through the center of the clutch gear and therefor doesnt move the clutch gear.
  May 28, 2012
@EFFEUNO 471 Does this mean that the 8 tooth gear on the very top is actually connected to a worm gear? That would explain the black rod sticking out one side of the axle. If that is the case, then how does the steering work? I understand that the clutch gear is not actually attached to the black rod, but then how is it connected to the steering if nothing is turning the clutch gear?
 I made it 
  May 24, 2012
Quoting Max The Owl Nice job! For the past 2 years, I have been trying to find out how to do this... I think I know how the suspension works, and I love how the steering works, but how would you power the axle since the gear that powers it will be moving every time the axle goes over a bump?
Glad you like it.I'm not quite sure what you mean but the idea is that the wheels are powered by the central lengthwise axle on which the vehicle chassis also rests and the whole axle with the wheels is pendular around it. The clutch gear is on the drive axle but only regulates steering.
 I like it 
  May 23, 2012
Nice job! For the past 2 years, I have been trying to find out how to do this... I think I know how the suspension works, and I love how the steering works, but how would you power the axle since the gear that powers it will be moving every time the axle goes over a bump?
 I made it 
  May 21, 2012
Quoting Robert B. This looks really cool and I think it would work well, so can you please make instructions?
Thanks for the comment and glad you like it. The project is pretty old and I dont have it anymore and I cant make it in LDD so you'll have to make due with those pictures although I think they're pretty self-explanatory and sufficient.
 I like it 
  May 20, 2012
This looks really cool and I think it would work well, so can you please make instructions?
 
By EFFEUNO 471
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LEGO models my own creation MOCpages toys shop 8 studs wide pendular steered and driven axle


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