RCCrawler Forums

dadgummit · 06-27-2011, 06:22 PM

I just got my MRC Pro running and I ran into a problem. Whenever I make a right turn the left front tire rubs against the steering servo. I had to dial my steering EPA down to 60% of the travel which completely negates any advantage of the zero ackerman steering setup. Actually it is kind of hard to manuver with that little steering.

A MRC Pro with a 1/10th scale servo (Mine is an ACE 1313) cannot be an unusual set up, does anyone have a fix for this? Everything else is completely stock: tires, axles, steering knuckles etc.

AreCee · 06-27-2011, 06:25 PM

Yep, it rubs. The mini servo fits better but also rubs.

I made a mount to center the servo and mount the battery behind it on the uppers. Now the tire hits the springs at full lock.

Charlie-III · 06-27-2011, 06:48 PM

Quote:

Originally Posted by AreCee

Yep, it rubs. The mini servo fits better but also rubs.

I made a mount to center the servo and mount the battery behind it on the uppers. Now the tire hits the springs at full lock.

+1, using a 1/10th scale (AKA full size) servo means it either hits the LF tire @ full lock right, or, you make a plate to center the servo on the axle. This happens even with the stock knuckles.

rik · 06-27-2011, 07:03 PM

man, i just got finished wiring mine up and noticed the same thing. does anyone make an aftermarket centered servo mount? i can fab one if needed. but if they are out there and fairly cheap, it will save me some time.

thomass14 · 06-27-2011, 07:13 PM

rcbros has a nice 4 link servo mount

rik · 06-27-2011, 08:39 PM

Quote:

Originally Posted by thomass14

rcbros has a nice 4 link servo mount

Got a link? I just checked their site and didn't see it..

thomass14 · 06-27-2011, 09:17 PM

sorry I just checked also and can't find it. I just bought mine in april so not sure what happened

gdhknives · 06-27-2011, 10:31 PM

Quote:

Originally Posted by rik

man, i just got finished wiring mine up and noticed the same thing. does anyone make an aftermarket centered servo mount? i can fab one if needed. but if they are out there and fairly cheap, it will save me some time.

BilletWorks.

Don's mount works great and allows for ota steering as well.

rik · 06-28-2011, 04:54 AM

Quote:

Originally Posted by thomass14

sorry I just checked also and can't find it. I just bought mine in april so not sure what happened

no problem. thanks for double checkin.

Quote:

Originally Posted by gdhknives

BilletWorks.

Don's mount works great and allows for ota steering as well.

cool. I shall look into bwd. Thanks.

dadgummit · 06-28-2011, 08:57 AM

Quote:

Originally Posted by gdhknives

BilletWorks.

Don's mount works great and allows for ota steering as well.

Can you post a link? I went to the billetworks web site and saw some cool stuff like a better motor mount plate but no servo mount.

It seems that many manufacturers are no longer supporting the MRC. Every time I do a search for a part there is more than a 50/50 chance it has been discontinued.

AreCee · 06-28-2011, 09:48 AM

That is why I made my own using a CKRC servo plate. All you need are the upper link attachment points.

thomass14 · 06-28-2011, 04:22 PM

rcbro front mrc 4 link mount is back in stock just got pm from him and i checked the site

JEB21 · 06-29-2011, 12:05 AM

Quote:

Originally Posted by thomass14

rcbro front mrc 4 link mount is back in stock just got pm from him and i checked the site

is this mount from RCbros a direct drop in for the MRC pro and it's 4 link? I'll grab one if it drops right in and lets me center up my HS5645 without having to mess with anything else.

Charlie-III · 06-29-2011, 12:21 AM

Quote:

Originally Posted by JEB21

is this mount from RCbros a direct drop in for the MRC pro and it's 4 link? I'll grab one if it drops right in and lets me center up my HS5645 without having to mess with anything else.

I believe it is. I think my son is running one (he's sleeping, can't ask right now.)

thomass14 · 06-29-2011, 07:24 AM

you have to get the 4 link one from rcbros but you will have to get or make new arm to the knuckle because your centering the servo so the length is changing

dadgummit · 06-29-2011, 08:44 AM

Thanks for that, I just ordered the 4 link servo mount and the servo posts.

It is amazing to me they would design such a flawed system and try and pass it off as a "Professional Roller". In the stock form it is not really usable. I cannot think of any competition where you can have a chance at winning if you only have 60% of your steering!!! I guess that is why they are selling them off at $65!!

AreCee · 06-29-2011, 08:45 AM

Quote:

Originally Posted by thomass14

you have to get the 4 link one from rcbros but you will have to get or make new arm to the knuckle because your centering the servo so the length is changing

When I centered my servo I just flipped the servo so the output shaft is closer to the left wheel and was able to use the same link.

JEB21 · 06-29-2011, 12:07 PM

Quote:

Originally Posted by AreCee

When I centered my servo I just flipped the servo so the output shaft is closer to the left wheel and was able to use the same link.

2nd that.
Thats what I did on my old MRC, worked great.

06-27-2011, 06:22 PM	#1
dadgummit Newbie Join Date: Jul 2008 Location: Orange County Posts: 10	LF Tire rubbing steering Servo I just got my MRC Pro running and I ran into a problem. Whenever I make a right turn the left front tire rubs against the steering servo. I had to dial my steering EPA down to 60% of the travel which completely negates any advantage of the zero ackerman steering setup. Actually it is kind of hard to manuver with that little steering. A MRC Pro with a 1/10th scale servo (Mine is an ACE 1313) cannot be an unusual set up, does anyone have a fix for this? Everything else is completely stock: tires, axles, steering knuckles etc.

06-27-2011, 06:25 PM	#2
AreCee RCC Addict Join Date: May 2008 Location: Chicago/Bloomington Posts: 1,505	Yep, it rubs. The mini servo fits better but also rubs. I made a mount to center the servo and mount the battery behind it on the uppers. Now the tire hits the springs at full lock.

06-27-2011, 07:03 PM	#4
rik RCC Addict Join Date: Oct 2009 Location: In the mancave... Posts: 1,038	man, i just got finished wiring mine up and noticed the same thing. does anyone make an aftermarket centered servo mount? i can fab one if needed. but if they are out there and fairly cheap, it will save me some time.

06-27-2011, 07:13 PM	#5
thomass14 Quarry Creeper Join Date: Nov 2010 Location: mandan Posts: 412	rcbros has a nice 4 link servo mount

06-27-2011, 09:17 PM	#7
thomass14 Quarry Creeper Join Date: Nov 2010 Location: mandan Posts: 412	sorry I just checked also and can't find it. I just bought mine in april so not sure what happened

06-28-2011, 09:48 AM	#11
AreCee RCC Addict Join Date: May 2008 Location: Chicago/Bloomington Posts: 1,505	That is why I made my own using a CKRC servo plate. All you need are the upper link attachment points.

06-28-2011, 04:22 PM	#12
thomass14 Quarry Creeper Join Date: Nov 2010 Location: mandan Posts: 412	rcbro front mrc 4 link mount is back in stock just got pm from him and i checked the site

06-29-2011, 07:24 AM	#15
thomass14 Quarry Creeper Join Date: Nov 2010 Location: mandan Posts: 412	you have to get the 4 link one from rcbros but you will have to get or make new arm to the knuckle because your centering the servo so the length is changing

06-29-2011, 08:44 AM	#16
dadgummit Newbie Join Date: Jul 2008 Location: Orange County Posts: 10	Thanks for that, I just ordered the 4 link servo mount and the servo posts. It is amazing to me they would design such a flawed system and try and pass it off as a "Professional Roller". In the stock form it is not really usable. I cannot think of any competition where you can have a chance at winning if you only have 60% of your steering!!! I guess that is why they are selling them off at $65!!

Sponsored Links

RCCrawler Forums

Thread: LF Tire rubbing steering Servo