RCCrawler Forums

OGmicromonster · 02-13-2007, 03:29 PM

I just thought I'd post a few pics of my PTI GRC with the 12.5-inch stretch kit. These were taken at the SoCal RC Rock Crawlers round 5 competition at The Spot 2. This rig is pretty light (probably too light at the moment) weighing in at just over 3lbs. As you can probably see in a few of the photos it has a 3.8:1 planetary gear box to bring the final drive ratio to 49:1. I know the width is a bit wide I think I'll narrow the next set of wheels so the track width is a bit narrower. There are a few other minor tweaks that need to be made, but over all I was pretty happy with the way it performed. I'm still new at crawling, but I'm learning a lot quickly.

Unholy · 02-13-2007, 03:32 PM

Links to pictures that require logins to another website SUCK.

That is all.

hunter306 · 02-13-2007, 03:40 PM

Here is my 12.5" PTI Rockcrawler:

OGmicromonster · 02-13-2007, 03:55 PM

Sorry about that I didn't realize they wouldn't allow you to view them. I've relinked the photos.

rbgerrish · 02-13-2007, 04:14 PM

Looks pretty good! Let us know how the axles hold up.

pro beater · 02-13-2007, 04:24 PM

actually the PTI axles hold up pretty well , we have a guy in the MN Crawlers club that runs one

OGmicromonster · 02-13-2007, 04:32 PM

Yeah, they hold up pretty good. I did modify them a bit though. I ground down the un-necessary plastic on the underside of the center portion. You can barely see it in the fourth photo.

K_B · 02-13-2007, 04:35 PM

Are those lower shock mounts what's gonna come in the kit? Paul had sent some prototype links for me to try out. They have the shock mounts on the link themselves. I hadn't had very high hopes for 'em, but they've actually worked out really well.

OGmicromonster · 02-13-2007, 04:44 PM

Yeah, we've decided to abandon the mount on the link itself. The new mounts (as seen in the photo) are closer to what will come in the kit. This kit is still a prototype, but is closer to production. We've also made a change to the position of the uppler link mount on the axle. It's been moved higher for better geometery. The axle stays flatter throughout the suspensions movement. It also doesn't allow the axle to piviot under load.

K_B · 02-13-2007, 05:38 PM

I forgot to ask... Is the gear reduction also going to be included? Did you guys beef up the motor plate to keep it from flexing with the motor hanging that far off?

youngblood · 02-13-2007, 05:46 PM

Quote:

Originally Posted by OGmicromonster

3lbs

HOLY SMOKES that is light!

I think the width looks just fine. matches the wheelbase perfect.

very nice looking rig, add a little weight in the right places (low), and that thing should rock

got any flex shots?
-Potter

OGmicromonster · 02-13-2007, 06:01 PM

Quote:

Originally Posted by K_B

I forgot to ask... Is the gear reduction also going to be included? Did you guys beef up the motor plate to keep it from flexing with the motor hanging that far off?

The gear reduction won't be included. It will be an opional upgrade. And we did make a 3mm thick carbon fiber mounting plate that greatly reduced the flex on the previous one. I believe the gear reduction kit will include the new mounting plate, gear box, and new front plate to accomodate the longer motor assembly (I'm not exactly sure so don't quote me on that).

Quote:

Originally Posted by youngblood

HOLY SMOKES that is light!

I think the width looks just fine. matches the wheelbase perfect.

very nice looking rig, add a little weight in the right places (low), and that thing should rock

got any flex shots?
-Potter

Yup, even though it's light that's a good thing. Having the truck light allows for more tunability. If you need more weight you can just as much as you need. Down low and either in the front, back or both. It would also depend on what type of batteries you use. I was using a Venom 1550mah 20c Lipo (VEN-1570). It fits right between the chassis rails in the rear below the electronics. I didn't use any weights and it was pretty good. But I think if I added some weight to the front axle it would have been even better. I'll try that next time.

shaunsmaxx · 02-14-2007, 07:30 AM

I just got done stretching mine to the 10.5 wheelbase and now need to find diff center shafts. Anyone have a part# or link for me? I had it but lost it.

Shaun

OGmicromonster · 02-14-2007, 09:53 AM

PTI sells parts off their website if you can't find them anywhere else.

http://www.ptiracing.net/buy/buynow.htm

K_B · 02-14-2007, 10:09 AM

Here's a link to Killer Hobbies, but they're outta stock right now

http://www.killerhobbies.com/items/p...292-detail.htm

Skeeno · 02-14-2007, 10:24 AM

Looks like my PTI isn't finished. This is awesome. I can't wait to get the parts.

Skeeno · 02-14-2007, 01:15 PM

can you post some naked pics. I want to see how the electronics are mounted and check out that new tranny.

Unholy · 02-14-2007, 01:19 PM

Quote:

Originally Posted by OGmicromonster

Sorry about that I didn't realize they wouldn't allow you to view them. I've relinked the photos.

Best looking PTI I have seen so far!
I'll be interested how the axles/transmission hold up.

Randy77 · 02-20-2007, 06:45 PM

Nice truck, really interested in some pic's without the body to see how things are mounted.

May have some questions, still searching

Turblankas13 · 02-20-2007, 09:18 PM

Hey i am just getting into it and im deciding between this and the tlt-1. So my question is, is there alot of upgrades such as chassis u can use with this and do u think it is worth it?

02-13-2007, 03:29 PM	#1
OGmicromonster Rock Crawler Join Date: Apr 2005 Location: Upland Posts: 546	PTI 12-inch crawler kit I just thought I'd post a few pics of my PTI GRC with the 12.5-inch stretch kit. These were taken at the SoCal RC Rock Crawlers round 5 competition at The Spot 2. This rig is pretty light (probably too light at the moment) weighing in at just over 3lbs. As you can probably see in a few of the photos it has a 3.8:1 planetary gear box to bring the final drive ratio to 49:1. I know the width is a bit wide I think I'll narrow the next set of wheels so the track width is a bit narrower. There are a few other minor tweaks that need to be made, but over all I was pretty happy with the way it performed. I'm still new at crawling, but I'm learning a lot quickly. Last edited by OGmicromonster; 02-13-2007 at 03:53 PM.

02-13-2007, 03:32 PM	#2
Unholy I wanna be Dave Join Date: Mar 2006 Location: One Legend. Posts: 2,134	Links to pictures that require logins to another website SUCK. That is all.

02-13-2007, 03:40 PM	#3
hunter306 Pebble Pounder Join Date: Jan 2007 Location: Livonia Posts: 133	Here is my 12.5" PTI Rockcrawler:

02-13-2007, 03:55 PM	#4
OGmicromonster Rock Crawler Join Date: Apr 2005 Location: Upland Posts: 546	Sorry about that I didn't realize they wouldn't allow you to view them. I've relinked the photos.

02-13-2007, 04:14 PM	#5
rbgerrish I wanna be Dave Join Date: Mar 2004 Location: The Haunted Forest Posts: 3,586	Looks pretty good! Let us know how the axles hold up.

02-13-2007, 04:24 PM	#6
pro beater Quarry Creeper Join Date: Nov 2005 Location: Pueblo West Posts: 250	actually the PTI axles hold up pretty well , we have a guy in the MN Crawlers club that runs one

02-13-2007, 04:32 PM	#7
OGmicromonster Rock Crawler Join Date: Apr 2005 Location: Upland Posts: 546	Yeah, they hold up pretty good. I did modify them a bit though. I ground down the un-necessary plastic on the underside of the center portion. You can barely see it in the fourth photo.

02-13-2007, 04:35 PM	#8
K_B I wanna be Dave Join Date: May 2005 Location: Anchorage, Alaska Posts: 2,048	Are those lower shock mounts what's gonna come in the kit? Paul had sent some prototype links for me to try out. They have the shock mounts on the link themselves. I hadn't had very high hopes for 'em, but they've actually worked out really well.

02-13-2007, 04:44 PM	#9
OGmicromonster Rock Crawler Join Date: Apr 2005 Location: Upland Posts: 546	Yeah, we've decided to abandon the mount on the link itself. The new mounts (as seen in the photo) are closer to what will come in the kit. This kit is still a prototype, but is closer to production. We've also made a change to the position of the uppler link mount on the axle. It's been moved higher for better geometery. The axle stays flatter throughout the suspensions movement. It also doesn't allow the axle to piviot under load.

02-13-2007, 05:38 PM	#10
K_B I wanna be Dave Join Date: May 2005 Location: Anchorage, Alaska Posts: 2,048	I forgot to ask... Is the gear reduction also going to be included? Did you guys beef up the motor plate to keep it from flexing with the motor hanging that far off?

02-14-2007, 07:30 AM	#13
shaunsmaxx Rock Stacker Join Date: Feb 2006 Location: MN Posts: 92	I just got done stretching mine to the 10.5 wheelbase and now need to find diff center shafts. Anyone have a part# or link for me? I had it but lost it. Shaun

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02-14-2007, 09:53 AM	#14
OGmicromonster Rock Crawler Join Date: Apr 2005 Location: Upland Posts: 546	PTI sells parts off their website if you can't find them anywhere else. http://www.ptiracing.net/buy/buynow.htm

02-14-2007, 10:09 AM	#15
K_B I wanna be Dave Join Date: May 2005 Location: Anchorage, Alaska Posts: 2,048	Here's a link to Killer Hobbies, but they're outta stock right now http://www.killerhobbies.com/items/p...292-detail.htm

02-14-2007, 10:24 AM	#16
Skeeno RCC Addict Join Date: Jan 2006 Location: Irritable Isle Posts: 1,364	Looks like my PTI isn't finished. This is awesome. I can't wait to get the parts.

02-14-2007, 01:15 PM	#17
Skeeno RCC Addict Join Date: Jan 2006 Location: Irritable Isle Posts: 1,364	can you post some naked pics. I want to see how the electronics are mounted and check out that new tranny.

02-20-2007, 06:45 PM	#19
Randy77 Rock Stacker Join Date: Feb 2007 Location: Kingsport Posts: 55	Nice truck, really interested in some pic's without the body to see how things are mounted. May have some questions, still searching

02-20-2007, 09:18 PM	#20
Turblankas13 Quarry Creeper Join Date: Feb 2007 Location: East Aurora Posts: 289	Hey i am just getting into it and im deciding between this and the tlt-1. So my question is, is there alot of upgrades such as chassis u can use with this and do u think it is worth it?

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Thread: PTI 12-inch crawler kit