RCCrawler Forums

EeePee · 01-10-2006, 02:38 PM

Quote:

Originally Posted by vroach1966

Could you use a 4th servo and either a 4 channel radio or an 'r' box so you don't have to have brake every time the rear axle is disengaged?

If you have a 3 channel radio like the Traxxas TQ3, and it's been modded, it has a 3 position switch. So with the switch in the middle, everything is normal, in it's neutral position. Then you could throw the switch one way, and it could push the steering knuckle/female shaft piece and disengage the driveshaft and push the bellcrank and that could put a rod in the spokes of the wheel locking up the rear tires. Throw the switch the other way, and it'll pull everything instead of push, and not put the stick in the spokes.

Interesting.

microgoat · 01-10-2006, 03:42 PM

I still have a little tweaking to do. The rear shaft disengages about 70% of the time, but there's a problem when the suspension is traveling. The driveshaft collar wants to travel up and down the shaft during suspension movement, so I don't get reliable action all the time. I think a longer servo horn will do the job, but I don't have one in my parts box

I'll pick one up tomorrow.

miniwheeler · 01-10-2006, 06:46 PM

EeePee i think the stock tq3 switch works just right, eather all the way in or out,it
gives max travel of the servo and easy to use

Microgoat ,i had to build in some slop because of link & linkage movement i cant see any reason for it not to work fine with a little more throw at the servo.

Asfar as my setup im trying to stay away from adding another servo,a 4 channel radio etc for cost reasons.i have a few more ways to try locking the rear and still keep it in the cheap.

miniwheeler · 01-12-2006, 11:24 AM

After some tweaking i think ive got the rear lock working, ive been bashing it around for a while and its still good to go it looks weak but no problems yet only time will tell

some pics of the parts/pices i made

rbgerrish · 01-12-2006, 11:28 AM

One note people: Watch out for this guy and his rig! At sundays comp, he was VERY capable, both truck and driver, and his Dig worked better than any I've ever seen so far. Needless to say, we were VERY impressed. I'm guessing a high finish in total points for 2006.

NO PRESSURE! ;)

Ryan

miniwheeler · 01-12-2006, 11:39 AM

Way to go Ryan, im gona choke for shure now

Unimoger · 01-12-2006, 03:50 PM

nice work Ryan, way to keep yourself on top

hackster · 01-12-2006, 04:03 PM

Best idea Ive seen in a long time. Super simple and it works awesome. Saw it in action at the comp and I was impressed.

Dont be surprised if you see more trucks with this feature in the near future. Sorry but I gotta keep up with the benjamins!

I will definately give credit where credit is due.

Sean

Unimoger · 01-12-2006, 04:35 PM

Quote:

Originally Posted by hackster

Best idea Ive seen in a long time. Super simple and it works awesome. Saw it in action at the comp and I was impressed.

Dont be surprised if you see more trucks with this feature in the near future. Sorry but I gotta keep up with the benjamins!

I will definately give credit where credit is due.

Sean

2ND that Sean, I have not seen it in person, but I think it is the newest , hottest idea for rc crawling.

rbgerrish · 01-12-2006, 05:29 PM

Quote:

Originally Posted by miniwheeler

Way to go Ryan, im gona choke for shure now

No way dude, you're the shizzle. Looking forward to '06!

OIT_TLT · 01-13-2006, 12:07 AM

man, i wish i coulda hung around and watched course 2, but it was gettin late and i had to come back to school! maybe next time i will be able to stay the whole time and watch jim do some *** whooping!

kevinlongisland · 01-13-2006, 06:44 AM

Quote:

Originally Posted by Unimoger

2ND that Sean, I have not seen it in person, but I think it is the newest , hottest idea for rc crawling.

I 3rd that! Definitely a step forward for the shaftys.

thaclodking · 01-13-2006, 07:35 AM

Definitely innovative. Might have to try that on my Willy's once I swap TXT axles under it.

microgoat · 01-13-2006, 07:39 AM

This is definitely an idea worth copying. Way to go miniwheeler! I've got mine all sorted with the longer servo horn and end points adjusted, it works like a charm. Now to get the brake going

JakeDaSnake · 01-13-2006, 07:42 AM

Thats pretty freakin cool dude!!! I wanna see it in action!!!

Later,
Jake

miniwheeler · 01-13-2006, 09:33 PM

Gee thanks guys

just trying to give those clod busters the shaft

microgoat · 01-17-2006, 08:12 PM

Here's the brake, Round I. As usual, there are still a few bugs to work out, like the way the brake engages during articulation (left rear wheel raised), but it's quite effective otherwise. A seperate braking servo is a possible if not ideal solution. The brake engages when the rear driveshaft uncouples. With the brake engaged, the front wheels won't pull the truck across carpet.

Now I've got a linkage headache. The photos show the brake engaged and disengaged (jammed up against the tire and not).

miniwheeler · 01-17-2006, 08:39 PM

Have you tried haveing it go into the webbing on the back of the wheel instead of against the tire ,it could give you enough play to allow for suspension movement

miniwheeler · 02-21-2006, 08:09 AM

Ok so i grabbed a pick axe and dug up this old dig thread. there is some footage in the vid section under orcrc highrocks bash of the front dig working as well as a bunch of other cool crawlers kicking tail on the wet rocksORCRC 1/29/06 Highrocks Bash
the link ro ryans awesome vid

CronusTRD · 02-21-2006, 09:02 AM

How effective can that brake be with a locked differential?

We need mini-arb's

01-17-2006, 08:12 PM	#57
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	Here's the brake, Round I. As usual, there are still a few bugs to work out, like the way the brake engages during articulation (left rear wheel raised), but it's quite effective otherwise. A seperate braking servo is a possible if not ideal solution. The brake engages when the rear driveshaft uncouples. With the brake engaged, the front wheels won't pull the truck across carpet. Now I've got a linkage headache. The photos show the brake engaged and disengaged (jammed up against the tire and not). Attached Images Last edited by microgoat; 01-17-2006 at 08:18 PM.

01-10-2006, 03:42 PM	#42
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	I still have a little tweaking to do. The rear shaft disengages about 70% of the time, but there's a problem when the suspension is traveling. The driveshaft collar wants to travel up and down the shaft during suspension movement, so I don't get reliable action all the time. I think a longer servo horn will do the job, but I don't have one in my parts box I'll pick one up tomorrow.

01-10-2006, 06:46 PM	#43
miniwheeler Rock Crawler Join Date: Nov 2005 Location: dallas Posts: 866	EeePee i think the stock tq3 switch works just right, eather all the way in or out,it gives max travel of the servo and easy to use Microgoat ,i had to build in some slop because of link & linkage movement i cant see any reason for it not to work fine with a little more throw at the servo. Asfar as my setup im trying to stay away from adding another servo,a 4 channel radio etc for cost reasons.i have a few more ways to try locking the rear and still keep it in the cheap.

01-12-2006, 11:24 AM	#44
miniwheeler Rock Crawler Join Date: Nov 2005 Location: dallas Posts: 866	After some tweaking i think ive got the rear lock working, ive been bashing it around for a while and its still good to go it looks weak but no problems yet only time will tell some pics of the parts/pices i made

01-12-2006, 11:28 AM	#45
rbgerrish I wanna be Dave Join Date: Mar 2004 Location: The Haunted Forest Posts: 3,586	One note people: Watch out for this guy and his rig! At sundays comp, he was VERY capable, both truck and driver, and his Dig worked better than any I've ever seen so far. Needless to say, we were VERY impressed. I'm guessing a high finish in total points for 2006. NO PRESSURE! ;) Ryan

01-12-2006, 11:39 AM	#46
miniwheeler Rock Crawler Join Date: Nov 2005 Location: dallas Posts: 866	Way to go Ryan, im gona choke for shure now

01-12-2006, 03:50 PM	#47
Unimoger I wanna be Dave Join Date: Aug 2005 Location: G6'N Posts: 7,391	nice work Ryan, way to keep yourself on top

01-12-2006, 04:03 PM	#48
hackster Pebble Pounder Join Date: May 2004 Location: Portland or Posts: 128	Best idea Ive seen in a long time. Super simple and it works awesome. Saw it in action at the comp and I was impressed. Dont be surprised if you see more trucks with this feature in the near future. Sorry but I gotta keep up with the benjamins! I will definately give credit where credit is due. Sean

01-13-2006, 12:07 AM	#51
OIT_TLT Quarry Creeper Join Date: Aug 2005 Location: On the yellow dummy dumper Posts: 447	man, i wish i coulda hung around and watched course 2, but it was gettin late and i had to come back to school! maybe next time i will be able to stay the whole time and watch jim do some *** whooping!

01-13-2006, 07:35 AM	#53
thaclodking Rock Crawler Join Date: Sep 2004 Location: a place of settlement, activity, or residence. Posts: 842	Definitely innovative. Might have to try that on my Willy's once I swap TXT axles under it.

01-13-2006, 07:39 AM	#54
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	This is definitely an idea worth copying. Way to go miniwheeler! I've got mine all sorted with the longer servo horn and end points adjusted, it works like a charm. Now to get the brake going

Sponsored Links

01-13-2006, 07:42 AM	#55
JakeDaSnake Quarry Creeper Join Date: Feb 2004 Location: Mobile AL Posts: 217	Thats pretty freakin cool dude!!! I wanna see it in action!!! Later, Jake

01-13-2006, 09:33 PM	#56
miniwheeler Rock Crawler Join Date: Nov 2005 Location: dallas Posts: 866	Gee thanks guys just trying to give those clod busters the shaft

01-17-2006, 08:39 PM	#58
miniwheeler Rock Crawler Join Date: Nov 2005 Location: dallas Posts: 866	Have you tried haveing it go into the webbing on the back of the wheel instead of against the tire ,it could give you enough play to allow for suspension movement

02-21-2006, 08:09 AM	#59
miniwheeler Rock Crawler Join Date: Nov 2005 Location: dallas Posts: 866	Ok so i grabbed a pick axe and dug up this old dig thread. there is some footage in the vid section under orcrc highrocks bash of the front dig working as well as a bunch of other cool crawlers kicking tail on the wet rocksORCRC 1/29/06 Highrocks Bash the link ro ryans awesome vid

02-21-2006, 09:02 AM	#60
CronusTRD Quarry Creeper Join Date: Oct 2005 Location: MD Posts: 323	How effective can that brake be with a locked differential? We need mini-arb's

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