RCCrawler Forums

microgoat · 05-28-2006, 04:38 AM

Yep, you read it right. As in Twin Traction Beam, Ford's funky split solid axle. Why? Because it's hard to do. There sure isn't any advantage from a performance standpoint, but since I'm putting a Blackfoot body on this, I wanted a suspension under it that would be true to form, and TTB seemed to be the way to go.

I've started with an aluminum ladder frame using the bottom of TLT side plates as link mounts. The rear axle will be leaf-sprung. Both axles will be mounted upside-down to accommodate the swap over to a driver's side pumpkin on the TTB, which means I'll have to reverse the rotation of the motor.

The TLT axle has been narrowed 1/2 inch on the left (shown glued in the mockup shot, it will have an aluminum plate spanning the joint for reinforcement) and uses a Tamiya Mini Cooper dogbone and a TLT outdrive on a chopped axle shaft. The swingin' side gets an HPI 50mm dogbone, which had to be trimmed to fit inside the TLT drive cup. Both axle halves will get hockey-stick shaped brackets that attach the axles to the frame. The left side will also get some spacers so it doesn't bind when the two halves articulate.

Since it's a scaler, it won't need a whole lot of travel. I'm using Mini LST springs; at least I think that's what they are. I found 'em in my spring box. They're short and soft. If I go for ultimate scale, I'll pop for a set of Mini-T shocks (like TLT shocks ain't leaky enough)

blah, blah, blah, here's the pics:

1BadJeepBruiser · 05-28-2006, 06:16 AM

Goat you are Officially king of building the most original trucks I have ever scene!

I look forward to seeing this build.

Mike

slugzracing · 05-28-2006, 06:23 AM

I knew you were crazy but this just proves it!
How wide is the spring you are using? it looks like it will be a little tight for an A-arm and the coil to mount on the pumpkin side.

f150dan · 05-28-2006, 06:42 AM

That is going to be awesome man. I can't wait to see it built

Mad Scientist · 05-28-2006, 08:40 AM

Cool, keep the pics coming.

EeePee · 05-28-2006, 08:55 AM

I figure if it really sucks on the R/C, then it's pretty scale!

Unimoger · 05-28-2006, 10:57 AM

Quote:

Originally Posted by 1badjeepbruiser

Goat you are Officially king of building the most original trucks I have ever scene!

I look forward to seeing this build.

Mike

2ND that, this guy is on fire with ideas.

bRIBEGuy · 05-28-2006, 11:40 AM

Wow, that's alot of ongoing "unique" projects.

Nice job.

This one will be fun to watch............hopefully it gets further then the Stunimog. ;)

ColquittCustom405 · 05-28-2006, 01:39 PM

Good idea Micro',I'll be checkin up on this build.I love how your brain works!

microgoat · 05-28-2006, 02:43 PM

Don't give up on the 'Mog just yet. Just 'cuz I'm not posting doesn't mean there isn't a lot of behind-the scenes work going on. And you can all reap the benefits. Yes, I'm a big, fat tease. Stay tuned. If you miss it, you're not paying attention, or you're living in a cave with Osama Bin Laden.

The tow truck, however, needs a major cash infusion in order to get the 6-channel radio, micro speed control and about 300 other little details required to finish it. But the hard part is done.

All this thing needs is some aluminum and some time, and I've got a little of both, so we'll see what happens here shortly. Most of the bits are already worked out in my head, I just need to make the stuff and see if it works like I think it will.

Eee Pee, Yeah, performance wasn't a top priority with this build .

Slugz, the A-arm will be sleeved 4-40 rod going thru the outer set of holes, mounted rigid to the axle like the 1:1 radius arms, and the springs will sit right on top of the knuckles, since the frame is so wide.

Cole82 · 05-28-2006, 02:56 PM

Why do you have a drive cup pushed up against the ring gear the right side? On the 1:1 the diff moves up and down as part of the traction beam.

JohnRobHolmes · 05-28-2006, 05:03 PM

I dont even know what the hell is going on with this thing. Why would anybody conceive such a convoluded axlish thing? Did Ford just tell a designer to have at it? WTF!!

Looks like a very interesting build though. It surely wont be the run of the mill.

microgoat · 05-28-2006, 05:06 PM

Cole, i'm only using the dogbone axle on that side because it's shorter. This axle will work just like a TTB, with all the unsprung weight of the real thing. I'd like to find a dogbone that's an RCH shorter than a Mini Cooper's, but no such luck. Might be time to invest in a MAPP torch and shorten the things to avoid binding at full lock.

John, I have no idea. Maybe somebody dropped a solid axle and had a brainstorm. But they sold a bazillion of 'em, and I've never seen one in scale, so what the hell.

And just to clarify, all the hard work behind the scenes I alluded to earlier on the Mog, is being done by someone else. All I did was come up with an idea, and poke a little bit.

Cole82 · 05-28-2006, 05:14 PM

I see micro. That is going to be hard getting the driveshaft through the passanger side arm.

John this is fords IFS setup. With the strength of a solid axle and close to ifs ride quality. This suspension actually works really well.

microgoat · 05-28-2006, 06:32 PM

TTB has its lovers and its haters. I've never been a fan, but hey, it's a Ford, and I'm a Blue Oval guy so I gotta go with it.

Here's some progress. And before you guys ask, the tires are from a Wild Ceptor (Tamiya Boy's 4WD series kit) I scored NIB on the Bay for $30 shipped. There's more out there, and the rest of the Ceptor will become, of all things, a working Zamboni. I recycle everything, and what else are you going to do with a 4x4 with solid suspension?

The wheels I made from TLT outer rims and HPI Vintage centers.

HaPtOAD · 05-28-2006, 10:36 PM

That axle is going to be so freakin cool, but if anything like a real TTB the tires are going to cup really $#^%ing bad with any kind of lift.

microgoat · 05-29-2006, 08:26 AM

A little progress this morning: got both sides hung. I still need to add bushings for the passenger side pivot, but most of the TTB work is done. There's still a bit of cleanup, plate straightening, and dogbone-spring issues to work out, but the major work is done.

The front end has about 3/4 inch total travel per side. Since this is a 1/12 scale rig, that works out to 8 inches, which seems about right for a TTB. Anyone know for sure? That could go down once the springs are added.

Still need to add the steering links. I'm gonna try to duplicate the Ford's tie rod while I'm at it

microgoat · 05-29-2006, 10:31 AM

Here's a better pic, showing the TTB at ride height (full droop). Note that the driveshafts are close to level, and there's room for compression travel. This is actually going to work.

EeePee · 05-29-2006, 10:44 AM

Incredible Stu! Good job man.

It even has the terrible camber curve, just like the real thing.

SlammedMini469 · 05-29-2006, 10:55 AM

looks good....about the travel and flex thing....i have seen some TTB's that flex as good as a solid axle....i can post a pic if you would like

05-28-2006, 04:38 AM	#1
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	TLT with TTB Yep, you read it right. As in Twin Traction Beam, Ford's funky split solid axle. Why? Because it's hard to do. There sure isn't any advantage from a performance standpoint, but since I'm putting a Blackfoot body on this, I wanted a suspension under it that would be true to form, and TTB seemed to be the way to go. I've started with an aluminum ladder frame using the bottom of TLT side plates as link mounts. The rear axle will be leaf-sprung. Both axles will be mounted upside-down to accommodate the swap over to a driver's side pumpkin on the TTB, which means I'll have to reverse the rotation of the motor. The TLT axle has been narrowed 1/2 inch on the left (shown glued in the mockup shot, it will have an aluminum plate spanning the joint for reinforcement) and uses a Tamiya Mini Cooper dogbone and a TLT outdrive on a chopped axle shaft. The swingin' side gets an HPI 50mm dogbone, which had to be trimmed to fit inside the TLT drive cup. Both axle halves will get hockey-stick shaped brackets that attach the axles to the frame. The left side will also get some spacers so it doesn't bind when the two halves articulate. Since it's a scaler, it won't need a whole lot of travel. I'm using Mini LST springs; at least I think that's what they are. I found 'em in my spring box. They're short and soft. If I go for ultimate scale, I'll pop for a set of Mini-T shocks (like TLT shocks ain't leaky enough) blah, blah, blah, here's the pics: Attached Images Last edited by microgoat; 06-07-2006 at 08:53 PM.

05-28-2006, 02:43 PM	#10
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	Don't give up on the 'Mog just yet. Just 'cuz I'm not posting doesn't mean there isn't a lot of behind-the scenes work going on. And you can all reap the benefits. Yes, I'm a big, fat tease. Stay tuned. If you miss it, you're not paying attention, or you're living in a cave with Osama Bin Laden. The tow truck, however, needs a major cash infusion in order to get the 6-channel radio, micro speed control and about 300 other little details required to finish it. But the hard part is done. All this thing needs is some aluminum and some time, and I've got a little of both, so we'll see what happens here shortly. Most of the bits are already worked out in my head, I just need to make the stuff and see if it works like I think it will. Eee Pee, Yeah, performance wasn't a top priority with this build . Slugz, the A-arm will be sleeved 4-40 rod going thru the outer set of holes, mounted rigid to the axle like the 1:1 radius arms, and the springs will sit right on top of the knuckles, since the frame is so wide. Last edited by microgoat; 05-28-2006 at 02:48 PM.

05-28-2006, 06:32 PM	#15
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	TTB has its lovers and its haters. I've never been a fan, but hey, it's a Ford, and I'm a Blue Oval guy so I gotta go with it. Here's some progress. And before you guys ask, the tires are from a Wild Ceptor (Tamiya Boy's 4WD series kit) I scored NIB on the Bay for $30 shipped. There's more out there, and the rest of the Ceptor will become, of all things, a working Zamboni. I recycle everything, and what else are you going to do with a 4x4 with solid suspension? The wheels I made from TLT outer rims and HPI Vintage centers. Attached Images

05-29-2006, 08:26 AM	#17
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	A little progress this morning: got both sides hung. I still need to add bushings for the passenger side pivot, but most of the TTB work is done. There's still a bit of cleanup, plate straightening, and dogbone-spring issues to work out, but the major work is done. The front end has about 3/4 inch total travel per side. Since this is a 1/12 scale rig, that works out to 8 inches, which seems about right for a TTB. Anyone know for sure? That could go down once the springs are added. Still need to add the steering links. I'm gonna try to duplicate the Ford's tie rod while I'm at it Attached Images

05-29-2006, 10:31 AM	#18
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	Here's a better pic, showing the TTB at ride height (full droop). Note that the driveshafts are close to level, and there's room for compression travel. This is actually going to work. Attached Images

05-28-2006, 06:16 AM	#2
1BadJeepBruiser Sinking with the ship Join Date: Mar 2005 Location: El Capitan...sole survivor and sinking fast Posts: 8,864	Goat you are Officially king of building the most original trucks I have ever scene! I look forward to seeing this build. Mike

05-28-2006, 06:23 AM	#3
slugzracing I wanna be Dave Join Date: Mar 2005 Location: Hiding from Goodall Posts: 2,518	I knew you were crazy but this just proves it! How wide is the spring you are using? it looks like it will be a little tight for an A-arm and the coil to mount on the pumpkin side.

05-28-2006, 06:42 AM	#4
f150dan Quarry Creeper Join Date: Jan 2006 Location: Jonesboro, TN Posts: 442	That is going to be awesome man. I can't wait to see it built

05-28-2006, 08:40 AM	#5
Mad Scientist RCC Addict Join Date: Mar 2005 Location: Saginaw Posts: 1,721	Cool, keep the pics coming.

05-28-2006, 08:55 AM	#6
EeePee MODERATOR™ Join Date: Jul 2004 Location: Ohio Posts: 18,928	I figure if it really sucks on the R/C, then it's pretty scale!

05-28-2006, 11:40 AM	#8
bRIBEGuy Rock Crawler Join Date: May 2004 Location: Calgary Posts: 807	Wow, that's alot of ongoing "unique" projects. Nice job. This one will be fun to watch............hopefully it gets further then the Stunimog. ;)

05-28-2006, 01:39 PM	#9
ColquittCustom405 I wanna be Dave Join Date: Dec 2005 Location: Orlando Posts: 7,420	Good idea Micro',I'll be checkin up on this build.I love how your brain works!

05-28-2006, 02:56 PM	#11
Cole82 I wanna be Dave Join Date: Jul 2005 Location: Cedar Rapids Posts: 2,028	Why do you have a drive cup pushed up against the ring gear the right side? On the 1:1 the diff moves up and down as part of the traction beam.

05-28-2006, 05:03 PM	#12
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	I dont even know what the hell is going on with this thing. Why would anybody conceive such a convoluded axlish thing? Did Ford just tell a designer to have at it? WTF!! Looks like a very interesting build though. It surely wont be the run of the mill.

05-28-2006, 05:06 PM	#13
microgoat I wanna be Dave Join Date: Feb 2005 Location: Cleveland, OH Posts: 8,009	Cole, i'm only using the dogbone axle on that side because it's shorter. This axle will work just like a TTB, with all the unsprung weight of the real thing. I'd like to find a dogbone that's an RCH shorter than a Mini Cooper's, but no such luck. Might be time to invest in a MAPP torch and shorten the things to avoid binding at full lock. John, I have no idea. Maybe somebody dropped a solid axle and had a brainstorm. But they sold a bazillion of 'em, and I've never seen one in scale, so what the hell. And just to clarify, all the hard work behind the scenes I alluded to earlier on the Mog, is being done by someone else. All I did was come up with an idea, and poke a little bit.

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05-28-2006, 05:14 PM	#14
Cole82 I wanna be Dave Join Date: Jul 2005 Location: Cedar Rapids Posts: 2,028	I see micro. That is going to be hard getting the driveshaft through the passanger side arm. John this is fords IFS setup. With the strength of a solid axle and close to ifs ride quality. This suspension actually works really well.

05-28-2006, 10:36 PM	#16
HaPtOAD Pebble Pounder Join Date: Jun 2005 Location: Rockwell, NC Posts: 131	That axle is going to be so freakin cool, but if anything like a real TTB the tires are going to cup really $#^%ing bad with any kind of lift.

05-29-2006, 10:44 AM	#19
EeePee MODERATOR™ Join Date: Jul 2004 Location: Ohio Posts: 18,928	Incredible Stu! Good job man. It even has the terrible camber curve, just like the real thing.

05-29-2006, 10:55 AM	#20
SlammedMini469 Rock Crawler Join Date: Feb 2005 Location: Hardin, KY Posts: 976	looks good....about the travel and flex thing....i have seen some TTB's that flex as good as a solid axle....i can post a pic if you would like

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