Crank bolt torque for timing belt change (10v)

[Huw Powell]

> I'm not sure why I bother, but shouldn't the torque actually be a lot 
> more than that? If you use the tool and you're putting 258 ft-lbs on the 
> t-wrench, then for simplifiying the numbers you can assume the t-wrench 
> is exactly 1-foot and you're putting 258 lbs at the end of it.

Your assumption makes the rest of what you calculate irrelevant because 
1. no torque wrenches are only 1 foot long (except itty bitty little 
inch-ounce ones), and 2. if it was, to apply 258 ft-lb using a one foot 
torque wrench, the poor tech would have to apply a full 258 pounds at 
its end.  I couldn't do that, since I weigh less than that...

To solve this problem you have to take a more abstract mathematical 
approach, I think, you can't just invent torque wrench lengths - since 
that is a variable that doesn't matter in this case.

Unfortunately, that whole rotational torque, moment arm thing was a 
shady area in my arithmetical training.  But I bet a decent algebra book 
would have a way to solve this problem.  That is, to convert a known 
(rotational) at the end of a known length lever arm to the torque at the 
other end.

See, it is no longer a "weight" at the end of the extension tool, I 
think, it is a rotation.  Might need a calculus book, not algebra, but 
still.

Stand on the end of a four foot pipe and it won't fall off and it won't 
break.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/