In another thread there's a discussion about a possible failed rear end. In it the question of safety hubs was raised. I didn't want to clutter that thread, so I'm writing this one.
First off, I'm a true rear end dummy. I do OK on pretty much everything else (a little above amateur level), but rear axles have always been beyond my skill set. Can someone explain in simple terms exactly what a safety hub is? How do they differ from a non-safet hub? Are they something that is available for a TT? If so, should I consider them for my truck?
Thanks in advance for any information!
I will let someone else more familiar with the safety hubs explain them.
BUT,to put your mind at ease,I have NEVER seen a broken TT axle shaft.
As a further vote of confidence,google 'Delagrange Hisso'.
The custom built rear end in this old Indy style racer uses TT axle shafts.This car is still owned,far as l know,by the Delagrange family.
The biggest advantage to safety hubs is that the hubs bear the weight of the car, rather than the axle. The wheel bolts directly to the hub.
In the original configuration the axles bear the weight of the car, AND are subjected to the radial twisting forces required to turn the wheel.
With safety hubs the axle deals only with the twisting forces.
Because the wheel is bolted directly to the hub, which is captured in the rear end housing, if an axle ever breaks your wheel will not come off.
Although axles do not break that often, this setup positively avoids the possibility of losing a rear wheel in the unlikely event the axle does break. Too, the safety hubs use sealed bearings, eliminating the necessity to grease the bearings and occasionally check wear of the old bearings and sleeves.
I installed the safety hubs as an investment in safety and I am very satisfied with them. Cut down on rolling friction, too.
Yup, those are the ones I bought. Very easy to install.
Thanks for the replies! I get it now, at least fundamentally.
Other thing i heard is these make a great outer seal
Have yet to buy a set but will do so after i get my brakes bought
If you have wood wheels, get this installation tool kit http://modeltranch.com/show_product.asp?idProduct=36 It makes installing the safety hubs correctly much easier.