#### Reprise

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- Joined
- Jul 22, 2015

- Posts
- 2,402

Ok, this is for *tightening* only...LOL And I'm a better writer than mathematician, to be sure...

I know multiplication devices exist - but I can't get my hands on one in a timely basis - without paying $200-$600 for it. Not spending that kind of money for 'today'.

For today, I need to get to 222 ft/lb or so. My 1/2" torque wrench goes to 250 - so it'll technically make it, but it's gonna take a lot of effort to get it there w/o multiplication. Later on, I need 260 ft/lb. And probably more than that at some point in the future, especially on a 3/4 ton truck.

I don't want to purchase a 3/4" TW and sockets for *very* occasional use (over $100 outlay in itself); the HF version only goes to the low 300's, IIRC.

Long-term, I know where to get a 1/2" in / out multiplier, but I can't get it 'today'. And HF only carries a 3/8" multiplier that goes to about 147 ft/lb.

Yes, I know T=

My question - given a fixed lever (1/2" torque wrench), and knowing the length of that wrench (head to handle), what length pipe would I need to attach to achieve an

(For our purposes, I'm fine with (+ / - ) 5% variance, where 'exact' is concerned; the wrench itself is only spec'd to within 4%, either way)

I'd like to get the end of the pipe just behind the head end of the wrench, for ease of use (much easier than figuring out how to securely attach to the lower / midpoint of the torque wrench, while tightening the fastener in question).

Should the pipe length be:

- exactly double the total length of the wrench?

- double the length to the midpoint of the knurled 'grip' section?

- something else?

Yes, I know this may be overkill - but if I weren't interested in 'precision', I'd just use old skool German torque specs (sortatite, gudentite, fuchentite). These are for brake calipers; the larger torque spec of 260 ft/lb that I'll need later on (listed above) is for my hitch riser height, swapping from Envoy > Sierra

If you know how to calculate the needed lever (pipe) length for a 2x conversion (bonus: link to it online), you'll have my sincere thanks.

Meanwhile, back out to the garage while waiting for the right one of you to see / respond? LOL

(I think I know who might, but I won't 'finger' them at the moment)

I know multiplication devices exist - but I can't get my hands on one in a timely basis - without paying $200-$600 for it. Not spending that kind of money for 'today'.

For today, I need to get to 222 ft/lb or so. My 1/2" torque wrench goes to 250 - so it'll technically make it, but it's gonna take a lot of effort to get it there w/o multiplication. Later on, I need 260 ft/lb. And probably more than that at some point in the future, especially on a 3/4 ton truck.

I don't want to purchase a 3/4" TW and sockets for *very* occasional use (over $100 outlay in itself); the HF version only goes to the low 300's, IIRC.

Long-term, I know where to get a 1/2" in / out multiplier, but I can't get it 'today'. And HF only carries a 3/8" multiplier that goes to about 147 ft/lb.

Yes, I know T=

*f*(orce) **r*(otation) (in general terms; when GMTNation gains mathematical font capabilities, I'll revise that...lol)My question - given a fixed lever (1/2" torque wrench), and knowing the length of that wrench (head to handle), what length pipe would I need to attach to achieve an

__exact__doubling of torque (and where would it need to be attached to the wrench)? I've seen anywhere from 'end of wrench' to 'midpoint', to anywhere in between.(For our purposes, I'm fine with (+ / - ) 5% variance, where 'exact' is concerned; the wrench itself is only spec'd to within 4%, either way)

I'd like to get the end of the pipe just behind the head end of the wrench, for ease of use (much easier than figuring out how to securely attach to the lower / midpoint of the torque wrench, while tightening the fastener in question).

Should the pipe length be:

- exactly double the total length of the wrench?

- double the length to the midpoint of the knurled 'grip' section?

- something else?

Yes, I know this may be overkill - but if I weren't interested in 'precision', I'd just use old skool German torque specs (sortatite, gudentite, fuchentite). These are for brake calipers; the larger torque spec of 260 ft/lb that I'll need later on (listed above) is for my hitch riser height, swapping from Envoy > Sierra

If you know how to calculate the needed lever (pipe) length for a 2x conversion (bonus: link to it online), you'll have my sincere thanks.

Meanwhile, back out to the garage while waiting for the right one of you to see / respond? LOL

(I think I know who might, but I won't 'finger' them at the moment)

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