Skip to comments.My torque tube needs help. Why should I do it?
Posted on 08/25/2010 7:44:29 PM PDT by When do we get liberated?
I am ordering parts to repair the torque tube on my 1970 Opel GT. The question I have is, why is it there? What purpose does it serve? It would seem to me that a simple driveshaft would suffice, but no, I have a heavy (everything seems heavy in an 1800 pound car) piece that serves, as far as I can see, no purpose. I have read the Wikipedia definition of what it does, but this makes no sense to me. Can someone tell me in layman's terms why it is there?
I have no idea - but an Opel GT is a seriously COOL car!
Yup, I think they build 'em with that darn dent....
(Robt pings xena because she likes heavy torque tubes....)
It’s a Dunsel.
The “dent” was to make room for the top of the carb ... 145 mph in east TX in 1973 between Bastrop and Rockne. (Don’t tell my dad.)
More mass implies more angular momentum. The mass might have been built into the shaft to allow the car to overcome deformations on the path without overloading the engine with shock loads.
“My torque tube needs help. Why should I do it?”
Take a shower & call your Dr in the morning.
(Patton remains confused. Gets knew tread for Opel.)
This thread could go downhill quickly...
A torque tube system is an automobile driveshaft technology, used in cars with a front engine and rear drive. It is not as widespread as the Hotchkiss drive, but is still occasionally used to this day.
The "torque" that is referred to in the name is not that of the driveshaft, along the axis of the car, but that applied by the wheels. The design problem that the torque tube solves is how to get the traction forces generated by the wheels to the car frame. The "torque tube" transmits this force by directly coupling the axle differential to the transmission and therefore propels the car forward by pushing on the engine/transmission and then through the engine mounts to the car frame.
Does Viagra work for a “torque tube”?
A friend of mine had one of those in HS.
It was yellow.
He had Earl Schieb paind it green, the left the headlight cowlings yellow.
The car was ever after known as “Froggie”
I would start talking with these guys:
They look like they know what they are doin ...
It’s there to keep the flayrods from going out of skew on the treadle.
your what? needs what? geez, i’ve heard a lot of names for it but that sure takes the taco. sounds like a personal problem ya got there.
No dents, no rust, painted Carracas Red with black interior. Lenk Racing lowered suspension, 1 inch sway bar front 3/4 inch rear, BBS wheels, front brakes modified from a “75 station wagon, new interior, Weber 36/32 carb, header (still feels weird not having an S on the end of header), polyurethane bushings all around, 50 series BF Goodrich z rated tires. Koni gas adjust shocks on the way tommorow or Friday. Built it frame up, it is a monocoque car, so that means engine and spring cradles removed. Replaced every part with new. Every bolt, clamp, bushing and washer. Rewired the car front to back (That was wicked pissah fun)She bad.
Without it, those forces would very likely form a singularity that would devour the entire earth. Well, some of it, anyway. We'd lose Toledo, for sure.
(Patton remains confused. Gets knew tread for Opel.)”
Oh no. The last tread we had was Mr. Piper’s Opus.
If I had a dollar for every time I needed help with my torque tube......
Is there trouble at the mill?!!!
Have you adjusted the disgronificator?
“The torque tube extends from the transmission to the axle and encases the driveshaft. The axles and gearbox are essentially connected and as a result, no trailing arms or multi link suspensions are necessary. This system allows for extreme axle articulation but prevents the axle from being contorted when it is at extreme compression or droop. It also prevents axle wind-up and axle hop, and encloses the driveshafts and protects them from obstacles and the elements. “
“If I had a dollar for every time I needed help with my torque tube......”
You don’t keep it sheathed?
That's only on pre-1970 Chevettes with the transmogrifier and deflatulent options.
I thought it was for buffering the flux capacitor past 1.21 Gigawatts.
This is the lightest car outside of a Nash Metropolitan. The torque tube was used on Fords up until 1950’s and in Corvettes today, but in the Corvettes case it is because the engine is in the front and the trans is in the rear. The torque tube is needed to prevent any vibration in the input shaft. a micrometer at the motor is a millimeter 8 feet later. In the Opel’s case I have a 1 foot driveshaft (cue 1 foot driveshaft jokes)2 U joints AND a torque tube.
Is that Algore telling his son to slow down?
...I'll come in again...
And you're complaining? LOL
It directs force from the rear wheels back through the drive train to push the car forward rather than through the rear suspension to the frame.
“It directs force from the rear wheels back through the drive train to push the car forward rather than through the rear suspension to the frame.”
Is that from the Carma Sutra?
I dont know about Opels, but there is a lot of info on Tata’s in the Kama Sutra.
Want to hear a good Dunsel story? Try my carb linkage. I poop you not;
1. You push the gas pedal
2. A rod pushes forward. There is a junction point.
3. This causes the next rod to move up There is a junction point
4.That rod moving up comes to a junction point.
5. That causes the next rod to rotate, where it meets a junction point.
6. The next junction point rotates a rod that goes behind the motor and comes to a junction point.
7. When that junction point is turned it turns a rod that has a junction point.
8. Your carb blades open up.
Maybe it isnt a dunsel though. at 40 years old it works perfectly, never stretches, never changes...
Sort of an automotive bris, if you will.
I dont know about Opels, but there is a lot of info on Tatas in the Kama Sutra.”
That’s when the Car-ma Sutra comes .. in .. handy.
I expected that lol
Oh, no. My muffler thrush bearing just gave out.
Do NOT mess with the disgronificator! If you try to adjust the disgronificator you'll just cause yourself all kinds of extra work!
You need to go to your local Napa Auto parts. Ask for a Johnsons 3785 specific gravity wrench. Make sure you get a 3785. They might tell you a 3795 will do, but if it isn't a 3785 you'll be in a world of hurt.
Also, pick up a 12 pack of WD40. You won't need it for this job, but the 12 pack is a great deal and the stuff is almost as useful as duct tape.
Freep mail me once you have the Johnsons 3785 specific gravity wrench and I'll talk you through the rest.
The torque tube is the tube in which the drive shaft runs to the rear differential. In most vehicles, like a hotchkiss drive, the engine twists against the frame or body to spin the drive shaft. The drive shaft then attempts to turn the differential. This means that engine torque tends to lift the right tire and push down on the left tire. It is why a car with an open differential always spins the right (passenger side) tire on takeoff, since engine torque is twisting the whole axle assembly.
The torque tube instead, mounts directly to the differential and to the transmission, so that no twiting force is applied to the axle or the frame by the engine. Instead, the engine twists the shaft inside the torque tube, which then transfers the torque right back to the transmission case. The rear axle, then, does not attempt to twist against the body under power.
You could change your car over to a Hotchkiss drive, where the engine torque is transferred to the body, and the rear axle reacts to engine torque by attempting to turn, causing weight distribution change side to side. But you’ll need different engine mounting, different springing, change to a 4 link style suspension in the back, and other changes, as well. I would NOT suggest doing that. Instead, if all else fails, a very good machine shop should be able to repair or fabricate a new torque tube. Likely yours is damaged by hitting something, or a failed drive shaft or joints hitting it.
It is complex, heavy, and expensive, but it was done to spare your car from twisting the frame or body from engine torque, and to improve cornering characteristics and prevent “under power” handling changes.
Ohio has been trying to give Toledo back to Michigan for years, so at least Ohioans wouldn't mind.
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