• Hi Guest!
    You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Front Hub Castle Nut

Share this page

Might as well buy the deep version 1-1/8" socket; if you don't, you'll also need to use an extension (assuming wire-wheel hubs).

While using an extension isn't so bad in itself, it can deflect somewhat, not resulting in an accurate value when using a torque wrench (follow the manual, on selecting shims and final torque).
 
Randy Forbes said:
While using an extension isn't so bad in itself, it can deflect somewhat, not resulting in an accurate value when using a torque wrench (follow the manual, on selecting shims and final torque).
Click to expand...

Randy--

I'll agree that an extension might matter when using an impact wrench as some spring in the extension might absorb some (dynamic) torque but my understanding is that with static torque such as we exert through a torque wrench whatever momentary spring action there is will "add back" when the "spring" in the extension unwinds. And with anything over a 1/8" drive set I just cannot imagine that there is any measurable spring action.

Does this make sense to you?
 
Yes, a straight extension will not affect the correct use of a torque wrench. The torque is simply transferred through the extension. But because the extension is in equilibrium, it must have the same torque applied at both ends. Torque measured by torque wrench = torque applied to socket.
 
Speaking of extensions and torque, I noticed my tire shop tightens the wheel lug nuts using a air wrench with various 'extension' like devices. I asked the installer about it and he said the extensions limited the amount of torque applied to the lugs so they weren't over tightened. He said he had several different extensions depending on the amount of torque required. I looked at the tools and could not see any mechanical reason why they would have different ratings. The mechanic had no explanation other than he was told to use them when installing wheels.
Any one out there ever seen them and have an explanation of how they work?
 
A little searching gives: " An impact wrench works by hammering the shaft as it spins. A torque stick is basically a piece of spring steel. When it reaches the desired torque instead of tightening the bolt anymore it just rebounds against the wrench.

They are fairly accurate, although nothing beats a properly calibrated torque wrench. "

Source: https://answers.yahoo.com/question/index?qid=20101126090717AA4NBLC

They are for sale at lots of places.
 
Back
Top