RCCrawler Forums

grover · 05-23-2005, 06:00 PM

It has been a while since I posted and I realized every event I have attended I have had a totally new/rebuilt truck. I am encouraged by the performance of this latest desing and felt like sharing.

from the top:
http://www.rcpics.net/img/57289

from the side:
http://www.rcpics.net/img/57290

from the front:
http://www.rcpics.net/img/57291

In action at pbb5:
http://www.rccrawler.com/forum/attac...tid=2081&stc=1

The chassis is thin walled titanium and the front pivots with spacers limiting travel in the rear most front mount.

gregrocks90046 · 05-23-2005, 06:22 PM

cool rig! where did you get that chunk of ti???

radishkid · 05-23-2005, 06:38 PM

I hope that chunk of 3/2.5 didn't come off of your Moots. (I doubt if of course, but it does look like bicycle tubing)...

<edit> HFS!, I see a little green alligator. It is from a Moots. You're a lunatic if you chopped up a perfectly good frame. I hope you have a good excuse mister!!!

grover · 05-23-2005, 06:42 PM

Genuine Moots 3/2.5! But not from my ybb, it came from my wifes retrotech single speed. lol

gregrocks90046 · 05-23-2005, 06:45 PM

damn! you cut up your wife's moots???? you should have cut up someone's litespeed!

grover · 05-23-2005, 06:48 PM

lol...its just a hundred dollar handlebar!?!?

radishkid · 05-23-2005, 06:49 PM

Cutting up a singlespeed anything is a sin (that's mostly what we ride here in DE)... Cutting up a ti singlespeed is like... well, it's like saying that I have waaaaaaaay too much money on my hands... can you get me a chunk too? maybe the headtube?

radishkid · 05-23-2005, 06:50 PM

Oh, ok, that's a little more like it. I can see a handlebar. I thought it was the toptube.

grover · 05-23-2005, 07:03 PM

The Lorax is all about recycle/reuse...

AdamF · 05-23-2005, 07:31 PM

Interesting. I'm trying to picture how it works. So it has no shocks or links at all? How does that tube connect to the axles? I'm confused. :-P

grover · 05-23-2005, 07:49 PM

go to the picture of the top view. Look only at the front axle only, as the rear axle is mounted solid. Ok the front axle has four alloy clamps the front most clamp is a pivot. The next clamp is tight to the backbone preventing the backbone from sliding forwards. The third clamp is a pivot, and finally the fourth clamp is tight to the backbone preventing the backbone from sliding backwards. What may be hard to see is that there are two spacer that slide in milled out slots between the third and fourth clamps.

two shots of the limited articulation
http://www.rcpics.net/img/57306

http://www.rccrawler.com/forum/attac...tid=2088&stc=1

Magic · 05-23-2005, 10:25 PM

looks cool, hows it work,

kaetwo · 05-24-2005, 11:50 AM

You should be hung for cutting that bar up. :-)

PinchFlat · 05-24-2005, 01:04 PM

I have an old PlanetX Goliath bar I can cut up for a back bone... I could have the heaviest backbone style crawler ever... Hell, It would be the heaviest crawler ever. Oh wait, I think Ace's 2.2 may be heavier.

grover · 05-24-2005, 01:17 PM

Sometimes you have to do what you have to do...the pieces fit so nice, are strong and plenty light. I have no regrets other than the look on my wifes face as she realized her little gator was going under the saw. She has forgiven me now that I have kept a truck together for over a week.

radishkid · 05-24-2005, 10:45 PM

Might this mean that I'll be cutting up my stupid easton ct2 flat bar? I'd have the first carbon stick...

grover · 05-24-2005, 11:38 PM

I have built some out of composite and ended up sleeving alloy over the top. The composite backbones dont slide over the rocks as well and wear quicker. Some of my first composite chassis were also a little flexy but the handle bar sure wouldn't be!

If you are going to go for a composite keep in mind they dont like to be drilled and have loads pulling in and out. So I fabed alloy clamps for the shocks that did not need any drilling through the composite. But then again the handlebar is better matterial than I have ever tried, it may be sound enough to drill?

rckjeep · 05-25-2005, 01:04 AM

Quote:

Originally Posted by grover

Genuine Moots 3/2.5! But not from my ybb, it came from my wifes retrotech single speed. lol

You cut up a RetroTech SS. Sir I curse you, CURSE YOU I SAY. What a crime. I could have gotten you a TI tube very easily. Oh well

grover · 05-25-2005, 07:37 AM

I did not cut my wifes retrotech single speed...no bikes were hurt in the making of this crawler. A guy with a full xtr moots ybb and a retrotech converted to single speed (fillet brazed of coarse) is not going to cut a irreplaceable classis that the entire bike community of Flagstaff would recognize as hall of famer Joe Ms wifes bike. I have tooled that little bike around bike races years after I bought it and had people come and ask if I know its esteemed history. Its just a handle bar!

The moots handle bar is ideal for an aplication like this because it does not have a buldge in the center, Moots instead uses a alloy sleeve to shim the bar. That means this very thin wall Ti tube has only the very fortuitous advantage of two five degree bends in it. These bends alloy my rear axle assembly to be run in the same oriantation as the front.

I have run four linkless stick chassis since the "simple clod based rig" and this one has the most interest to me and the most potential imho. Its stiff, light, low cg, has all the wiring out of harms way and plenty of ground clearance for a 2.2.

gregrocks90046 · 05-25-2005, 07:45 AM

if you are a serious MTB rider, you should be replacing your handlebar once a year just for safety. great way to recycle, lorax!

05-23-2005, 06:00 PM	#1
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	Fat ti 2.2 It has been a while since I posted and I realized every event I have attended I have had a totally new/rebuilt truck. I am encouraged by the performance of this latest desing and felt like sharing. from the top: http://www.rcpics.net/img/57289 from the side: http://www.rcpics.net/img/57290 from the front: http://www.rcpics.net/img/57291 In action at pbb5: http://www.rccrawler.com/forum/attac...tid=2081&stc=1 The chassis is thin walled titanium and the front pivots with spacers limiting travel in the rear most front mount.

05-23-2005, 07:49 PM	#11
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	go to the picture of the top view. Look only at the front axle only, as the rear axle is mounted solid. Ok the front axle has four alloy clamps the front most clamp is a pivot. The next clamp is tight to the backbone preventing the backbone from sliding forwards. The third clamp is a pivot, and finally the fourth clamp is tight to the backbone preventing the backbone from sliding backwards. What may be hard to see is that there are two spacer that slide in milled out slots between the third and fourth clamps. two shots of the limited articulation http://www.rcpics.net/img/57306 http://www.rccrawler.com/forum/attac...tid=2088&stc=1 Last edited by grover; 05-23-2005 at 08:08 PM.

05-24-2005, 11:50 AM	#13
kaetwo I wanna be Dave Join Date: Jun 2004 Location: Whales Posts: 2,939	ohhhhh..... You should be hung for cutting that bar up. :-)

05-24-2005, 11:38 PM	#17
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	I have built some out of composite and ended up sleeving alloy over the top. The composite backbones dont slide over the rocks as well and wear quicker. Some of my first composite chassis were also a little flexy but the handle bar sure wouldn't be! If you are going to go for a composite keep in mind they dont like to be drilled and have loads pulling in and out. So I fabed alloy clamps for the shocks that did not need any drilling through the composite. But then again the handlebar is better matterial than I have ever tried, it may be sound enough to drill? Last edited by grover; 05-24-2005 at 11:43 PM.

05-23-2005, 06:22 PM	#2
gregrocks90046 RCC Addict Join Date: Feb 2005 Location: Crawlifornia Uber Alles Posts: 1,146	cool rig! where did you get that chunk of ti???

05-23-2005, 06:38 PM	#3
radishkid Quarry Creeper Join Date: Nov 2004 Location: In the saddle... Posts: 473	I hope that chunk of 3/2.5 didn't come off of your Moots. (I doubt if of course, but it does look like bicycle tubing)... <edit> HFS!, I see a little green alligator. It is from a Moots. You're a lunatic if you chopped up a perfectly good frame. I hope you have a good excuse mister!!!

05-23-2005, 06:42 PM	#4
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	Genuine Moots 3/2.5! But not from my ybb, it came from my wifes retrotech single speed. lol

05-23-2005, 06:45 PM	#5
gregrocks90046 RCC Addict Join Date: Feb 2005 Location: Crawlifornia Uber Alles Posts: 1,146	damn! you cut up your wife's moots???? you should have cut up someone's litespeed!

05-23-2005, 06:48 PM	#6
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	lol...its just a hundred dollar handlebar!?!?

05-23-2005, 06:49 PM	#7
radishkid Quarry Creeper Join Date: Nov 2004 Location: In the saddle... Posts: 473	Cutting up a singlespeed anything is a sin (that's mostly what we ride here in DE)... Cutting up a ti singlespeed is like... well, it's like saying that I have waaaaaaaay too much money on my hands... can you get me a chunk too? maybe the headtube?

05-23-2005, 06:50 PM	#8
radishkid Quarry Creeper Join Date: Nov 2004 Location: In the saddle... Posts: 473	Oh, ok, that's a little more like it. I can see a handlebar. I thought it was the toptube.

05-23-2005, 07:03 PM	#9
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	The Lorax is all about recycle/reuse...

05-23-2005, 07:31 PM	#10
AdamF RCC Addict Join Date: Apr 2004 Location: Cincinnati Ohio Posts: 1,673	Interesting. I'm trying to picture how it works. So it has no shocks or links at all? How does that tube connect to the axles? I'm confused. :-P

05-23-2005, 10:25 PM	#12
Magic Rock Crawler Join Date: Nov 2004 Location: Thats a Good question Posts: 552	looks cool, hows it work,

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05-24-2005, 01:04 PM	#14
PinchFlat Say hello to my dactylion Join Date: Jun 2004 Location: On the Boat to Whore Island Posts: 4,470	I have an old PlanetX Goliath bar I can cut up for a back bone... I could have the heaviest backbone style crawler ever... Hell, It would be the heaviest crawler ever. Oh wait, I think Ace's 2.2 may be heavier.

05-24-2005, 01:17 PM	#15
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	Sometimes you have to do what you have to do...the pieces fit so nice, are strong and plenty light. I have no regrets other than the look on my wifes face as she realized her little gator was going under the saw. She has forgiven me now that I have kept a truck together for over a week.

05-24-2005, 10:45 PM	#16
radishkid Quarry Creeper Join Date: Nov 2004 Location: In the saddle... Posts: 473	Might this mean that I'll be cutting up my stupid easton ct2 flat bar? I'd have the first carbon stick...

05-25-2005, 07:37 AM	#19
grover Rock Crawler Join Date: Jan 2005 Location: Tumwater Posts: 910	I did not cut my wifes retrotech single speed...no bikes were hurt in the making of this crawler. A guy with a full xtr moots ybb and a retrotech converted to single speed (fillet brazed of coarse) is not going to cut a irreplaceable classis that the entire bike community of Flagstaff would recognize as hall of famer Joe Ms wifes bike. I have tooled that little bike around bike races years after I bought it and had people come and ask if I know its esteemed history. Its just a handle bar! The moots handle bar is ideal for an aplication like this because it does not have a buldge in the center, Moots instead uses a alloy sleeve to shim the bar. That means this very thin wall Ti tube has only the very fortuitous advantage of two five degree bends in it. These bends alloy my rear axle assembly to be run in the same oriantation as the front. I have run four linkless stick chassis since the "simple clod based rig" and this one has the most interest to me and the most potential imho. Its stiff, light, low cg, has all the wiring out of harms way and plenty of ground clearance for a 2.2.

05-25-2005, 07:45 AM	#20
gregrocks90046 RCC Addict Join Date: Feb 2005 Location: Crawlifornia Uber Alles Posts: 1,146	if you are a serious MTB rider, you should be replacing your handlebar once a year just for safety. great way to recycle, lorax!

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