| Author | Message | ||
     Mike Rupp (Mike_rupp) Senior Member Username: Mike_rupp Post Number: 311 Registered: 02-2002 |
I've got a truetrac in my front axle. Yesterday, I was driving through deep snow and got stuck. I was in high gear with the difflock on. I got stuck just as I was almost onto pavement. My left front tire was on dry pavement & the right tire was on snow & ice. The left front tire was just sitting there while my right front and rear tires were spinning. I assumed that the truetrac would at least give me some axle movement to that side, even though the other side was on a slippery surface. The trutrac still appears to be working like it always has; it centers the steering wheel when driving. Is this normal operation? I wasn't expecting the TT to lock up completely, but I figured it would perform better than that. | ||
| Curtis N (Curtis) Dweb Lounge Member Username: Curtis Post Number: 1127 Registered: 05-2002 |
In this situation if you aply the brake just right it should engage the TT and pull you through. The brake more or less "tricks" the TT into action. | ||
| Rob Davison (Nosivad_bor) Dweb Lounge Member Username: Nosivad_bor Post Number: 1623 Registered: 02-2003 |
if the snow/ice was slick enough then the TT would have behaved as you describe. next time try push the break on a little bit to fool the system into thinking there is some traction. if seen this work on slickrock and various otehr terrain. rd | ||
| Nadim Samara (Discodino) Member Username: Discodino Post Number: 245 Registered: 02-2003 |
True True... | ||
| Mike Rupp (Mike_rupp) Senior Member Username: Mike_rupp Post Number: 312 Registered: 02-2002 |
Thanks. | ||
| Steve Rupp (Steve_rupp) Member Username: Steve_rupp Post Number: 61 Registered: 03-2003 |
Mike, Get an ARB! | ||
| Brian Brown (Rtiqulatendisco) New Member Username: Rtiqulatendisco Post Number: 17 Registered: 01-2004 |
Many people seem to expect more than they get from a TT. Almost every time I hit the trails, I'm with someone with a TT in the front. Needless to say, I will never put a TT in my truck. To correct wandering, just get new radius arms or the RTE panhard rod and that will help as much as a TT if not more. And TT's can break axles too, so why not just get the ARB and know you've got max traction? | ||
| Frank Rafka (Mongosd2) Dweb Lounge Member Username: Mongosd2 Post Number: 402 Registered: 02-2003 |
What are u drivin' Brian? A stock D2 is very capable when u can lock the center lock. As for saying that a ARB is will provide max traction, yes, but most of the time a little slip will keep u from breaking a axle... | ||
| Mike Rupp (Mike_rupp) Senior Member Username: Mike_rupp Post Number: 317 Registered: 02-2002 |
How is an adjustable panhard rod going to help with wandering? I can't see how moving the axle side to side is going to help with wandering. Wandering comes from the loss of caster angle. Please explain. | ||
| Brian Brown (Rtiqulatendisco) New Member Username: Rtiqulatendisco Post Number: 18 Registered: 01-2004 |
Frank, I have a D1 with ARB. You are correct is saying that a D2 is very capable, especially with the added traction of TT's. ARB's just give you more traction. Mike, I had some problems with my truck tracking straight and wandering a little even after having corrected radius arms. The panhard rod realigns your axle to original settings. I'm not a math expert but trig plays a part in understanding why it works. I'm not sure exactly why the minor adjustment helps but damn, it made a big difference in my truck and everyone who has tried it. | ||
| Nadim Samara (Discodino) Senior Member Username: Discodino Post Number: 270 Registered: 02-2003 |
That panhard rod is only applicable with +3-4" lift though... | ||
| Bruce Potier (Brucep) Member Username: Brucep Post Number: 132 Registered: 06-2003 |
Brian, maybe what you have seen as an improvement comes from new bushings in that Panhard Rod and not the panhard itself, unless of course it was damaged or bent. | ||
| Perry Ray Miller (Discojunky) Member Username: Discojunky Post Number: 74 Registered: 03-2003 |
I'll bet you engaged your diff lock after you were stuck, right? If you engage your diff lock after you have lost momentum the TT won't engage properly unless you trick it with your break. Or better yet lock the CDL before if you think you'll need it. I love my TT/Det set up but I'm sure many people don't. Nothing is perfect just know how to use what you have. Hell, I know people who don't like crab legs if you can believe that! | ||
| Timothy A. Green (Tree_trimmer) New Member Username: Tree_trimmer Post Number: 2 Registered: 02-2004 |
So, what's the general feeling about the TT. I'm thinking about going with the TT/detroit setup in my 95 disco w/automatic. I don't really want to go with the ARB unless the TT is a total waste of money. I have installed the HD ARB spring/shock and am running 265/75 MTR's (which rub the frame at full lock, but thats another story) and also have the wandering problem. Who makes a good replacement radius arm and what is the approx. cost? | ||
| Bill Mallin (Billmallin) Senior Member Username: Billmallin Post Number: 456 Registered: 09-2003 |
http://www.rovertym.com/radiusarms.htm http://www.rovertym.com/ | ||
| Timothy A. Green (Tree_trimmer) New Member Username: Tree_trimmer Post Number: 5 Registered: 02-2004 |
Thank's Bill, that's just what I needed to see. | ||
| Timothy A. Green (Tree_trimmer) New Member Username: Tree_trimmer Post Number: 6 Registered: 02-2004 |
I'm truly sorry for posting the TT question. After reading a few archived threads I am truly enlightened. Please do not respond to this question! | ||
| Mike Rupp (Mike_rupp) Senior Member Username: Mike_rupp Post Number: 318 Registered: 02-2002 |
Perry, I had the difflock engaged the entire time. Well before I got stuck. The tt just acted like an open diff. It was probably the fact one tire was on ice/snow and the other was on pavement. Like I said, I didn't even think of using the brake. | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1454 Registered: 02-2002 |
Could someone explain to me briefly how the TT knows at what point to unlock? | ||
| Nadim Samara (Discodino) Senior Member Username: Discodino Post Number: 277 Registered: 02-2003 |
Kyle  !!! (Hahaha...had to man...soooorrrryyyy) | ||
| Rick Neff (Lostinboston) Senior Member Username: Lostinboston Post Number: 312 Registered: 06-2003 |
Dean, The TT is never locked. It is a torsion diff. It forces power to the wheel that is spinning slower. That is why it is good for correcting highway wander. when a car starts drifiting one tire is spinning slightl faster, it hten forces the power to the other wheel and brings the vehicle back to a straight line. If one wheel is spinning and not getting traction, it will force the power to the other wheel that hopefully has traction. The problem is that it only works if it is spinning less then 3.5 times faster. ETC helps keep it to less the 3.5 times usually. Mike was stuck because one wheel whas spinning faster the 3.5 times so the TT could not force the power to the wheel with grip. | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1457 Registered: 02-2002 |
Ok thanks. But why does it stop working above the 3.5 times faster limit? And how can you get to 3.5x faster on one wheel before it cuts in? Is this some protection or design flaw or is it allowing the tire tread to clear or something? | ||
| Rick Neff (Lostinboston) Senior Member Username: Lostinboston Post Number: 313 Registered: 06-2003 |
When there is foward momentum it is probably very dificult to get it to 3.5x faster, but in Mikes case he was starting from a standstill. I do not know why they do that. The tread clearing sounds reasonable or maybe they did some turning radius test, but i really have no idea why or how. Dean, i thought you were looking into an ARB? | ||
| John Roche (Jroc) Member Username: Jroc Post Number: 236 Registered: 08-2002 |
Seem's to me the TT would be more gentle on the axle's and less likely to break them, is this true? I know that you CAN break an axle with a LSD but on paper it should be more difficult, is this true in a practical sense? If there were a sudden change in traction, and one wheel had all the traction, the other one none, then wouldn't the sudden power to the wheel with traction put an INCREDIBLE amount of stress on the axle? Just seems like common sense to me, I dunno??? How about hearing from the people who've actually broken an axle with a TT, could it have been prevented? Were you getting crazy with the long pedal when it happened? Front or Rear? Uphill or Down? It also seems to me that if you were gonna upgrade to heavy duty axles and CV's why wouldn't you go with a true locker instead of a LSD? Not knocking LSD's but obviously they have less traction and can't compare to a full locker. Seems if you could upgrade to a LSD while running stock axles it would be more tempting financially vs the price of upgrading axles too. | ||
| Rick Neff (Lostinboston) Senior Member Username: Lostinboston Post Number: 314 Registered: 06-2003 |
Breaking a TT with stock axles and reasonble tires is uncommon, meaning that ive never heard of it, but anything is possible. You cant put a detroit in the front, itll cause havok withyour handling. A selectible locker can go in front, but they dont correct highway wander etc. there is another thread about the differences and advantage of a TT, locker and a selectible. |
