RCCrawler Forums

kevinlongisland · 08-25-2006, 08:08 AM

Awesome idea! I think you could use one servo with a rod connecting both sides or two servos, one for each side. I think this is only free-wheeling the actuated side, not locking it at the same time.

USATorque55 · 08-25-2006, 01:24 PM

Doesn't seem that bad until you have to think about your servos and linkages.

I like everything except for the idea of having to hack your axles and run two servos if you want to be able to cut throttle to the rear.

Its a start, amazing what improvements we can think of.

blue302ranger · 08-26-2006, 07:51 PM

Ok, here we go. Here are some pics of the first attempt. the idea was to use a small pin to slide in beside the axle and push the side gear toward the center of the dif housing. the pin broke. I have since scrapped the pin idea and used a tube to go completely around the axle. I don't have any pics of the tube actuated set-up but it seems to be much more reliable. I have also changed to a MUCH stronger spring inside the diff. This provides almost instant reingaugement of the axle. The pic with the axle installed should give everyone a good idea of how it locks the wheels. it's a simple lever against the wheel stops it from turning thing.

One high torque servo does it all.

Amaxx · 09-09-2006, 08:01 PM

Very awesome idea, very invative, well done

But it might be the pictures you have, but im still lost as to what the top links on the servo horn accomplish? I see them conect to the outter part of the axle, to the top of the spindle maybee??? If you could relive me of my being lost here, that would be great

wrightcs77 · 11-03-2006, 04:33 PM

Okay, working on this set up along with dig. I have this all done, but with one problem. When engaging from one side the pressure pushes the ring gear and drive cup away from the pinion gear resulting in a loss of mesh. How did you solve this? I will show how I did mine once I get this solved. I used round tube over the axles instead of a pin.

Thanks,
Casey

wrightcs77 · 11-06-2006, 04:19 PM

Well, I have dig and this set up installed. I do not have the top rods that push against the tires. I have it set up on a 4th channel so that when I have the dig to lock the rear drive axle, I can unlock the outside tire for the direction I am turning (If I am turning right, the right rear is locked and the left rear free wheels). The problem is, I seem to get a tighter turning radius with both rear tires locked. It seems I this mod did not help. I thought it would help a lot. It seems the truck is not heavy enough to "plant" only one rear tire and pivot around it.

Any ideas.

Thanks,
Casey

08-26-2006, 07:51 PM	#43
blue302ranger Pebble Pounder Join Date: Nov 2005 Location: huntsville Posts: 133	Ok, here we go. Here are some pics of the first attempt. the idea was to use a small pin to slide in beside the axle and push the side gear toward the center of the dif housing. the pin broke. I have since scrapped the pin idea and used a tube to go completely around the axle. I don't have any pics of the tube actuated set-up but it seems to be much more reliable. I have also changed to a MUCH stronger spring inside the diff. This provides almost instant reingaugement of the axle. The pic with the axle installed should give everyone a good idea of how it locks the wheels. it's a simple lever against the wheel stops it from turning thing. One high torque servo does it all. Attached Images

08-25-2006, 08:08 AM	#41
kevinlongisland The Wheels Keep Turning Join Date: Jan 2004 Location: Phoenix, Arizona Posts: 2,831	Awesome idea! I think you could use one servo with a rod connecting both sides or two servos, one for each side. I think this is only free-wheeling the actuated side, not locking it at the same time.

08-25-2006, 01:24 PM	#42
USATorque55 Quarry Creeper Join Date: Jan 2005 Location: Westchester Posts: 370	Doesn't seem that bad until you have to think about your servos and linkages. I like everything except for the idea of having to hack your axles and run two servos if you want to be able to cut throttle to the rear. Its a start, amazing what improvements we can think of.

09-09-2006, 08:01 PM	#44
Amaxx Pebble Pounder Join Date: Aug 2005 Location: Kenosha Posts: 181	Very awesome idea, very invative, well done But it might be the pictures you have, but im still lost as to what the top links on the servo horn accomplish? I see them conect to the outter part of the axle, to the top of the spindle maybee??? If you could relive me of my being lost here, that would be great

11-03-2006, 04:33 PM	#45
wrightcs77 RCC Addict Join Date: Feb 2005 Location: Minneapolis Posts: 1,496	Okay, working on this set up along with dig. I have this all done, but with one problem. When engaging from one side the pressure pushes the ring gear and drive cup away from the pinion gear resulting in a loss of mesh. How did you solve this? I will show how I did mine once I get this solved. I used round tube over the axles instead of a pin. Thanks, Casey

11-06-2006, 04:19 PM	#46
wrightcs77 RCC Addict Join Date: Feb 2005 Location: Minneapolis Posts: 1,496	Well, I have dig and this set up installed. I do not have the top rods that push against the tires. I have it set up on a 4th channel so that when I have the dig to lock the rear drive axle, I can unlock the outside tire for the direction I am turning (If I am turning right, the right rear is locked and the left rear free wheels). The problem is, I seem to get a tighter turning radius with both rear tires locked. It seems I this mod did not help. I thought it would help a lot. It seems the truck is not heavy enough to "plant" only one rear tire and pivot around it. Any ideas. Thanks, Casey

Sponsored Links

RCCrawler Forums

Thread: New "spin" on rear dig