RCCrawler Forums

bigdodge88 · 11-07-2008, 06:24 AM

Hello everyone,

I am starting a scale build that I would like to be able to go from 2wd to 4wd while driving. I know I could do it with a RC4WD R2D mounted backwords but that locks up the front axle and I want it to still spin freely while the power goes to the rear axle. Any one have any suggestions? If anyone has any pictures or videos please share them.

Thanks,
Justin

Stormin2u · 11-07-2008, 06:53 AM

Pretty common I'm considering doing that myself. Any dig system could be directed to the front wheels would accomplish that nicely. I've seen a couple threads I think it's a realistic set up for anyone who is interested in playing around with the difference in preformance. For legal Scale Competition I think it's fine as long as it doesn't lock up the front wheels as a front wheel dig but I'm not sure.

Someone asked that question prior to last years Tamiya/MSD Scale Nationals I don't remember seeing the answer for me that is a important issue.

bigdodge88 · 11-07-2008, 07:21 AM

I thought a dig still locked one axle while one got the power?

jetboat · 11-07-2008, 07:36 AM

2 sollutions... adjust your EPA's so that it only goes to freewheel and not all the way to lock. Or, cut the dig lockouts off or fill the slots with something like JB weld.

bigdodge88 · 11-07-2008, 07:41 AM

Do you have any pictures of that jetboat? Sorry, im not really familiar with digs.:-(

hairba11 · 11-07-2008, 07:47 AM

dig has 3 positions, locked, freewheel and engaged.

for something like this though you could go oldschool with a sliding center driveshaft decoupler

male on the axle, male on the trans, female center section with a wide shock preload clip with a glued in ring on each end connected to a servo

sloppy · 11-07-2008, 09:57 AM

Quote:

Originally Posted by jetboat

2 sollutions... adjust your EPA's so that it only goes to freewheel and not all the way to lock. Or, cut the dig lockouts off or fill the slots with something like JB weld.

or just take the dig brake off the little disc will slide right off.

jetboat · 11-07-2008, 10:24 AM

Quote:

Originally Posted by sloppy

or just take the dig brake off the little disc will slide right off.

But then you dont get to play with JB weld... thats stuff rocks!

bigdodge88 · 11-07-2008, 10:44 AM

Haha, i agree with jetboat. JB weld is great stuff. So it sounds like ill be getting a dig setup then. If any one could post up some picks of the set up that hairba11 was talking about it would be great.

Thanks,
Justin

cutlaSS · 11-07-2008, 10:52 AM

I have a R2D on my Hilux for the 2WD/4WD options. I just don't switch into the lock position, unless I wanna do a "linelock" burn out.

bigdodge88 · 11-07-2008, 10:54 AM

So the R2D has the option to be locked or free spin?

cutlaSS · 11-07-2008, 11:04 AM

Quote:

Originally Posted by bigdodge88

So the R2D has the option to be locked or free spin?

yes, like hairba11 said the dig has 3 positions engaged, freewheel and locked. You can seclect between engaged and freewheel without worrying about the lock position.

bigdodge88 · 11-07-2008, 11:10 AM

cool. thanks guys

ggooler · 11-07-2008, 10:46 PM

Quote:

Originally Posted by Stormin2u

Pretty common I'm considering doing that myself. Any dig system could be directed to the front wheels would accomplish that nicely. I've seen a couple threads I think it's a realistic set up for anyone who is interested in playing around with the difference in preformance. For legal Scale Competition I think it's fine as long as it doesn't lock up the front wheels as a front wheel dig but I'm not sure.

Someone asked that question prior to last years Tamiya/MSD Scale Nationals I don't remember seeing the answer for me that is a important issue.

that would be me that asked the question before the scale nats.
and yes, it was fine as long as it didnt lock the front tires up.
since then i have taken it out, it didnt help with the steering it was actually worse, it pushed really bad not having the front tires pulling.

bigdodge88 · 11-08-2008, 05:10 AM

Are you using the R2D in any other projects ggooler? Would you be willing to get rid of it?

ggooler · 11-08-2008, 07:52 PM

sorry, im using it in my kids rig. are you having a tough time finding one?

bigdodge88 · 11-08-2008, 08:34 PM

Just trying to get a feel for the prices of used R2Ds, RC4wd is out of stock right now. Plus I would rather have a used one to save some cash.

jetboat · 11-09-2008, 08:10 AM

Quote:

Originally Posted by bigdodge88

Just trying to get a feel for the prices of used R2Ds, RC4wd is out of stock right now. Plus I would rather have a used one to save some cash.

They will have the r2d v2 out in just a couple weeks.

hairba11 · 11-09-2008, 08:58 AM

I'm putting together a project now with the rc4wd bruiser trans,

"it didnt help with the steering it was actually worse, it pushed really bad not having the front tires pulling."

this doesn't make me feel better about it.

was it at least cool to be able to shift into 4wd mode?

I just wish the thing was 2Hi 4Med 4Low instead of 2Hi 2Med and 4Low

ggooler · 11-09-2008, 08:45 PM

Quote:

Originally Posted by hairba11

I'm putting together a project now with the rc4wd bruiser trans,

"it didnt help with the steering it was actually worse, it pushed really bad not having the front tires pulling."

this doesn't make me feel better about it.

was it at least cool to be able to shift into 4wd mode?

I just wish the thing was 2Hi 4Med 4Low instead of 2Hi 2Med and 4Low

it was okay for awhile to get some reactions from it. and was able to do some better burnouts too. but for performance nope.

11-07-2008, 06:24 AM	#1
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	2wd and 4wd Hello everyone, I am starting a scale build that I would like to be able to go from 2wd to 4wd while driving. I know I could do it with a RC4WD R2D mounted backwords but that locks up the front axle and I want it to still spin freely while the power goes to the rear axle. Any one have any suggestions? If anyone has any pictures or videos please share them. Thanks, Justin

11-07-2008, 06:53 AM	#2
Stormin2u I wanna be Dave Join Date: May 2007 Location: Taylors Falls just hanging with the MNRCRC crew. Posts: 7,843	Pretty common I'm considering doing that myself. Any dig system could be directed to the front wheels would accomplish that nicely. I've seen a couple threads I think it's a realistic set up for anyone who is interested in playing around with the difference in preformance. For legal Scale Competition I think it's fine as long as it doesn't lock up the front wheels as a front wheel dig but I'm not sure. Someone asked that question prior to last years Tamiya/MSD Scale Nationals I don't remember seeing the answer for me that is a important issue.

11-07-2008, 07:21 AM	#3
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	I thought a dig still locked one axle while one got the power?

11-07-2008, 07:36 AM	#4
jetboat I wanna be Dave Join Date: Dec 2005 Location: Tax Nation Posts: 2,289	2 sollutions... adjust your EPA's so that it only goes to freewheel and not all the way to lock. Or, cut the dig lockouts off or fill the slots with something like JB weld.

11-07-2008, 07:41 AM	#5
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	Do you have any pictures of that jetboat? Sorry, im not really familiar with digs.:-(

11-07-2008, 07:47 AM	#6
hairba11 RCC Addict Join Date: Mar 2007 Location: St. Louis (High Ridge) Posts: 1,279	dig has 3 positions, locked, freewheel and engaged. for something like this though you could go oldschool with a sliding center driveshaft decoupler male on the axle, male on the trans, female center section with a wide shock preload clip with a glued in ring on each end connected to a servo

11-07-2008, 10:44 AM	#9
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	Haha, i agree with jetboat. JB weld is great stuff. So it sounds like ill be getting a dig setup then. If any one could post up some picks of the set up that hairba11 was talking about it would be great. Thanks, Justin

11-07-2008, 10:52 AM	#10
cutlaSS Rock Crawler Join Date: Dec 2005 Location: Hawaii Posts: 888	I have a R2D on my Hilux for the 2WD/4WD options. I just don't switch into the lock position, unless I wanna do a "linelock" burn out.

11-07-2008, 10:54 AM	#11
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	So the R2D has the option to be locked or free spin?

11-07-2008, 11:10 AM	#13
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	cool. thanks guys

11-08-2008, 05:10 AM	#15
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	Are you using the R2D in any other projects ggooler? Would you be willing to get rid of it?

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11-08-2008, 07:52 PM	#16
ggooler Pebble Pounder Join Date: Oct 2007 Location: gig harbor Posts: 160	sorry, im using it in my kids rig. are you having a tough time finding one?

11-08-2008, 08:34 PM	#17
bigdodge88 RCC Addict Join Date: Jun 2008 Location: Monroe, NC Posts: 1,547	Just trying to get a feel for the prices of used R2Ds, RC4wd is out of stock right now. Plus I would rather have a used one to save some cash.

11-09-2008, 08:58 AM	#19
hairba11 RCC Addict Join Date: Mar 2007 Location: St. Louis (High Ridge) Posts: 1,279	I'm putting together a project now with the rc4wd bruiser trans, "it didnt help with the steering it was actually worse, it pushed really bad not having the front tires pulling." this doesn't make me feel better about it. was it at least cool to be able to shift into 4wd mode? I just wish the thing was 2Hi 4Med 4Low instead of 2Hi 2Med and 4Low

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