GRC12 Pro Build

[bajabada$$]

nice build man

[Mike Poulson]

Nice build, your attention to detail and craftsmanship is admired.

MikeP

[OGmicromonster]

Originally Posted by Mike Poulson

Nice build, your attention to detail and craftsmanship is admired.

MikeP

THANKS!!! There are a few other things I'd like to do, but I just don't have the machinery to do it with.

[4xFord]

Originally Posted by OGmicromonster

::: UPDATE :::

Well... I made it. The comp I wanted to run this new build at is tomorrow. I'll be competing with it at the SoCal RC Rock Crawlers round 2 of their winter series in Cougar Buttes. This update will be the last update for the build (until I get my dig setup working the way I want it to). Any other updates will be action photos and video. I'm taking my camera with me tomorrow so I'll have my friend take some photos of it during the comp.

Well on to the photos.

Here it is with a fresh coat of paint. It's a dark pearl purple with holographic flakes (they're multicolored flakes that change colors in the sun). As you can see, I painted a matching stand for it too.






Here's the stand by itself. It's Prolines Lexan car stand.


You can kinda see the holographic flakes under the rear window in this shot. I'll get some in the sun so you can really see it in its full glory.


Textured bedliner spray


Here you can see the full throw of the steering. By the way, this modded steering setup is 100 times better than the original steering. The turning radius was cut down almost by half!


It's tight in there but the ESC and receiver both fit under the upper plate.


And one shot just as the sun went down in some rocks outside the office.


I'll try to post some photos of it in action Sunday. Let me know your thoughts. All comments and suggested changes welcome.

Very nice rig man! Cool paint job too.

[OGmicromonster]

Thanks!

I've made a few changes since the last update. I'll post some photos soon. But basically I've swapped out the T4 transmission in favor of an RC4WD R2 with disconnect. This change required me to make a new upper plate, relocate the electronics and install a shifting servo. I'll post photos as soon as I finish reinstalling the electronics.

[Crawlerguy851]

Cool. Best PTI ever.

[gr33nlite]

VERY nice work there, I really like that shot outside the office!

I'll be interested in how the R2D works for you and what shift servo you find works best for ya Mine's just itching to be installed, need the chassis first!

[BeeRC]

Your truck looks really nice. A lot of good ideas went into it. Great job!

I've been wondering though, did you shim or lube the diffs? How have they held up for you under the stress of comps?

[OGmicromonster]

Originally Posted by BeeRC

Your truck looks really nice. A lot of good ideas went into it. Great job!

I've been wondering though, did you shim or lube the diffs? How have they held up for you under the stress of comps?

I shimmed the gears in the axles and they've held up really well. I actually broke two dog bones (right side) at the same time when stuck. I also bent some other dog bones into and "S" shape. I think I might still have them. If I do I'll post a photo. It was pretty impressive. They were bent beyond use. After snapping the two dog bones I tore the axles apart to examine and replace the broken bones. The gears were not even worn (they had two comps and one practice session on them). They are back in and still running great. I've only stripped out one set of gears (one ring and one pinion) and that was on a non-shimmed axle I had in my stock GRC truck. I've since shimmed them and my buddy's been running it without any issues.

[balang_479]

this is one of the most well built rock crawlers out there... truly a beauty!.. loving it

[Stormin2u]

Masterful build of the highest quality.

[LIKES2CRAWL]

Originally Posted by tomik

Also found a Stealth tranny today... Hope I can get it .

Pics of Delrin gears here: Delrin Ring-n-Pinion for PTI axles.

So what are the delrin gears for? Are they for the PTI axles?

[OGmicromonster]

Originally Posted by LIKES2CRAWL

So what are the delrin gears for? Are they for the PTI axles?

Yeah, GPM makes (or made at one time - I don't know if they are still availble) delrin gears for the TC3.

They would still make the gears if someone placed a large enough order. I think they're minimum is 500-1000 pieces (250-500 trucks front and rear).

[LIKES2CRAWL]

Originally Posted by OGmicromonster

Yeah, GPM makes (or made at one time - I don't know if they are still availble) delrin gears for the TC3.

They would still make the gears if someone placed a large enough order. I think they're minimum is 500-1000 pieces (250-500 trucks front and rear).

So there actualy for a TC3 but fit the PTI? or am I missing something here? Sorry for the noob Q's but I never messed with this PTI stuff.

[OGmicromonster]

Yah, the PTI gears are just Associated TC3/TC4/NTC3 gears.

[revin9k]

al i can say is WOW!! please post some video. thanks

[packerfan3001]

I hate to bring this up from the dead, but with the new steering do your dog bones bind when at full lock?

[OGmicromonster]

Originally Posted by packerfan3001

I hate to bring this up from the dead, but with the new steering do your dog bones bind when at full lock?

They do bind a little, but I've also noticed with the stock steering setup it bound a little too. That was the reason most were breaking dog bones (they were wearing a thin spot on the bone shaft). I've replaced the stock dog bones with the new universal shafts and haven't had any issues. I no longer use this chassis because the suspension geometry just wasn't right. But I do still use the axles and steering setup on another rig.

[iluvmud]

iknow you custom made your output shafts to convert to sliders, but im new to PTI, and i just got one..... are they available for sale from anyone that you know of?? I dont have the resources you do(lucky) and would like to be convert to sliders as well.

Thanks MUD

[OGmicromonster]

Originally Posted by iluvmud

iknow you custom made your output shafts to convert to sliders, but im new to PTI, and i just got one..... are they available for sale from anyone that you know of?? I dont have the resources you do(lucky) and would like to be convert to sliders as well.

Thanks MUD

I'm assuming you mean the input shaft on the axles. Yes those were custom made, but as far as I know no one makes them. You'll have to be creative like some and use associated input shafts for the TC4.