Rear TTB?

[ronclark]

Maybe so, but it looked like it kicked some butt to me:

http://www.youtube.com/watch?v=__uEM84xygA#watch-main-area

uglier than sin it self however

That thing is a monster, looks like it would be a blast to drive

 

[Toreadorranger]

Sure both links are equal length and generally centered between the beams, however the links should be of equal length to the beams and follow the path of the beams. If you watch that video closely, he rarely lands straight and has to aggressively counter the bumpsteer. Even with all four tires on the ground you can see huge toe changes as the suspension cycles, even under acceleration and braking.

Geometry isnt the best, but I would not even remotely recommend it for the scary steering page.

 

[AZFX4]

So wait a minute. The TTB will run in the right direction with no change? I figured it would be running in reverse...

 

[CHKNFKR]

So wait a minute. The TTB will run in the right direction with no change? I figured it would be running in reverse...

Why would it? People run rears as fronts all the time, this is no different.

The confusion comes from the misnomer "reverse rotation" its actually reverse cut, as in the direction of the bevel and the teeth. It's done this way so that a front is driven on the drive side of the teeth, not the coast side.

All that said, it would turn the right direction, but would be driving on the coast side of the gears.

 

[dangerranger83]

How weak would it be running the HP and the coast side gears for a rear end? Also does a LP front axle run on coast side or drive side?

 

[CHKNFKR]

How weak would it be running the HP and the coast side gears for a rear end? Also does a LP front axle run on coast side or drive side?

You want a hp front and a lp rear to run on the drive side. Its considered less vital on a front since generally speaking you don't drive around in 4x4 all the time.

 

[dangerranger83]

I know you want HP in the front, has reverse cut gears and is 15% stronger. But when people do a rear TTB swap, it will still be HP though there.

Why is it that some front axles have a driverside drop and some were passenger? What was the benefit of this or lack of? I know that when the 90's hit or so everybody went to driverside drop. I know chevy was one that was passenger side drop. Was this just because they didnt want to "match ford" due to they both had D44 (chevy having LP though)?

 

[Snoranger]

I know you want HP in the front, has reverse cut gears and is 15% stronger. But when people do a rear TTB swap, it will still be HP though there.

Yes, because your just turning it around, not flipping it over. (which, the bearings wouldnt last long, not getting oiled right.)

Why is it that some front axles have a driverside drop and some were passenger? What was the benefit of this or lack of? I know that when the 90's hit or so everybody went to driverside drop. I know chevy was one that was passenger side drop. Was this just because they didnt want to "match ford" due to they both had D44 (chevy having LP though)?

Well, citizen, that's an excellent question and I thank you for it.
I think it's great we live in a town where you can ask questions.
Because without questions, we'd just have answers.
And an answer without a question is a statement.

 

[85_Ranger4x4]

Why is it that some front axles have a driverside drop and some were passenger? What was the benefit of this or lack of? I know that when the 90's hit or so everybody went to driverside drop. I know chevy was one that was passenger side drop. Was this just because they didnt want to "match ford" due to they both had D44 (chevy having LP though)?

Couple theories I just cooked up.

1. Transfercase linkage geometry would probably be simpler with DS drop.
2. Less exhaust noise and heat transfer for driver with DS drop. The exhaust is also almost always routed on the PS of the truck.

1. Less potential drivetrain noise for driver with PS drip.
2. Fewer possible steering/drivetrain interactions with PS.
3. PS drop T-case and diff would help balance out a single driver and/or PS side fuel tank (keep in mind that many PS drop GM's had dual saddle tanks on each side though)

And I do think that they do somethings one way just because the other guy did it the other way... and sometimes they nearly downright copy the other guys idea.

 

[AZFX4]

I know you want HP in the front, has reverse cut gears and is 15% stronger. But when people do a rear TTB swap, it will still be HP though there.

I thought a HP was weaker than LP because its running on the coast side.

 

[dangerranger83]

HP is stronger when on the front axle due to the reverse cut gear teeth, like said up above, the force is on the drive side of the ring gear teeth because of this.

Think of it this way. A LP rear end has the gear teeth being pushed by the pinion gear which is the drive side of the teeth. Now take that same axle an put it on the front. Now it rotates the opposite dirrection (like the rear axle would be going in reverse but no pointed forward and thus its still forward momentum) and pulls the ring gear teeth and the force is on the coast side now.

Thats why an EB LP D44 is weaker then a ford HP D44 (sticking to the pumpkin guts here).

 

[AZFX4]

Yeah I get that just thought it was the other way around. I think I might have to try this.

Have you guys seen the custom TTB that some of the rock racers are building for KOH?
http://www.off-roadweb.com/events/1106or_king_of_the_hammers_2011/photo_12.html

 

[Snoranger]

Have you guys seen the custom TTB that some of the rock racers are building for KOH?
http://www.off-roadweb.com/events/1106or_king_of_the_hammers_2011/photo_12.html

Yes, I have. Here's the build thread over on Pirate.

http://www.pirate4x4.com/forum/showthread.php?t=924520

 

[--weezl--]

Yeah I get that just thought it was the other way around. I think I might have to try this.

Have you guys seen the custom TTB that some of the rock racers are building for KOH?
http://www.off-roadweb.com/events/1106or_king_of_the_hammers_2011/photo_12.html

IMHO, if you are going to put the TTB on the truck, why wouldn't you angle the tubes for better clearance? i realize that that truck is not really designed for flexing out on rocks or anything, but still...

 

[legoms013]

IMHO, if you are going to put the TTB on the truck, why wouldn't you angle the tubes for better clearance? i realize that that truck is not really designed for flexing out on rocks or anything, but still...

I think cuz then the middle u-joint would be operating at an angle, and would have less down travel since there is angle on it at static ride height.