Crowsfoot extension?

[adamsredlines]

Tried searching with no luck...does anybody make an "extension" for a crows foot wrench that would extend it out an inch or two similarly to how a torque extender does...but for use on a set of crows foot wrenches? Seems it should he out there but I can't find it...

 

[adamsredlines]

Like this but not home brew...

 

[mech-tech]

The cheap ones at harbor freight are made longer than a typical crowfoot wrench

 

[Moose-LandTran]

Not seen one exactly like that, but look up torque adaptors, they're very similar.

 

[Shadowdog500]

I've never seen one for sale when I looked.

But, I've resorted to welding a socket to a wrench to get the same result.

Chris

I made this one to torque the head bolts on my old Harley.

 

[devoncoolman]

Would be easy to make just some plate and a couple drive adaptors to sacrafice. Do u have a purpos for this. Like a special thing u need it for? Or just something usefull to have?

 

[blackz26]

How about hex cap adapters, and use a ratchet and a socket? Maybe I'm not understanding what you're looking for..

 

[Plombob]

Saltus wrench?

 

[66dave]

Try a couple Snap-on FZ1's.

Here is the link:
http://buy1.snapon.com/catalog/item...roup_ID=682192&store=snapon-store&dir=catalog

 

[Hawk321]

Try a double sided box end wrench and put an inbus socket into the ring.

 

[cryan]

Perhaps I'm missing something, but for the job in the photos would a ratcheting box end wrench not be a more suitable tool then a normal wrench to fully tighten the fitting? Crows foot spanners are for when a normal spanner won't fit. If a normal spanner or a ratchet spanner fits then use them. If its for torque applications then use a spigot end torque wrench that uses open end or box end wrench attachments. The way its done in the photo you cant be sure what the torque at the bolt head is.
http://www.norbar.com/Model200TH_N_m_lbf_ft-Professionals-TorqueWrenches-54-1-10-1231-product.aspx

http://www.norbar.com/RingEnds-TorqueWrenches-54-1-2-range.aspx

 

[adamsredlines]

I'm looking for a bit more reach out of a crowsfoot. I used one today to torque a heater tube bolt and with the size of the torque wrench head, it barely fit in the space I had to work with...so if it was any tighter I had no way to achieve a torque spec with it. So, I set out looking for a solution that hopefully doesnt include having to spend hundreds of dollars on a set of torque extenders.
I know the home brew would work, I just figured I cant be the only one out there who would probably have a use for something like this, and figured it would be a nice part to add to the box.

 

[bobcatdan]

I made exactly that tool. I had the guy next door with his mill 3/8" drive squares in a piece of flat stock and I pounded in the replaceable 3/8 drive end out of a SO adapter.

 

[2jz4me]

http://buy1.snapon.com/catalog/item..._ID=633947&group_ID=675060&store=&dir=catalog

Would these not work?

 

[Shadowdog500]

Perhaps I'm missing something, but for the job in the photos would a ratcheting box end wrench not be a more suitable tool then a normal wrench to fully tighten the fitting? Crows foot spanners are for when a normal spanner won't fit. If a normal spanner or a ratchet spanner fits then use them. If its for torque applications then use a spigot end torque wrench that uses open end or box end wrench attachments. The way its done in the photo you cant be sure what the torque at the bolt head is.
http://www.norbar.com/Model200TH_N_m_lbf_ft-Professionals-TorqueWrenches-54-1-10-1231-product.aspx

http://www.norbar.com/RingEnds-TorqueWrenches-54-1-2-range.aspx

When an offset adapter is 90 degree from the wrench the torque is the same as the value on the torque wrench.

There are also equations to give you the torque with the adapter at any angle. But I cheat since I have access to a torque wrench calibrator. Whenever I make an oddball wrench like this I put it on the wrench straight out and figure out what I have to put on the wrench to make the torque at the end of the wrench correct.

I also calibrate my wrench on a regular basis.
Chris

 

[bhalv]

probably the closest thing out there would be a dogbone wrench, unfortunately they aren't adjustable though.

 

[bcradio]

I don't understand why this its such a hard concept for everyone. He isn't wanting it to torque bolts to the exact spec, just to take them on and off. I have pondered this myself so many times about if they made a tool like that. I would love to have 1,2,3 inch extensions for my crowfoot. They must not exist I guess.

 

[adamsredlines]

I guess until I can find a "real" one, I can put something like this through the appropriate torque adapter to achieve what I'm looking for.
Not ideal but it should get the job done.

http://www.amazon.com/dp/B0002NYCZE/?tag=atomicindus08-20

 

[jeremy v]

It has been sort of mentioned already, but I have used the combo of a socket cap adapter and a torque adapter before, and it is a little bit cumbersome, but it worked. Just buy a socket cap set (~$10) and then buy the 3 sizes of torque adapters (various brands in various price ranges) that fit the cap adapters you just bought on the box end. Then you will have what you are looking for.

On the downside you will have a bit of extra play from the tolerance difference between the cap adapter and box end of the torque adapter, but on the plus side you have a 12pt torque adapter, so you can rotate the cap adapter to work more ideally in tight areas instead of it just being welded in place.

http://www.sears.com/craftsman-3-pc-socket-cap-set/p-00943303000P?PDP_REDIRECT=false&s_tnt=39869:4:0

http://buy1.snapon.com/catalog/item...roup_ID=674854&store=snapon-store&dir=catalog


OOPS, too late. I was typing this while the OP was posting the exact same thing.

 

[adamsredlines]

I'm thinking king a set screw through the hex end of the adapter to the socket cap adapter would help take care of any wobble. May be an interesting project...something home brew that doesn't necessarily look like it.

 

[jeremy v]

I have that same Gearwrench adapter set the OP just linked to, and if you have the room for it that is the better choice over the Craftsman version I linked to. I only use the Craftsman version when clearance is a real issue, because the Gearwrench version takes up more vertical space. The Gearwrench adapters I have fit very snugly to begin with and the rubber o-ring keeps the adapter from being wobbly when put through a box end. The locking feature also pinches the box end between the adapter and the socket so it will not come apart on its' own. I would do that if you have the room.

One thing I did with one set of mine (I have 2 sets of the Gearwrench cap adapters) is I ground down the adapter ring so that it didn't stick out beyond the box end wrench for tighter areas. You can see what I mean in the pics attached.

 

[jeremy v]

I had the picture upload error again, so here are the other pics. The last pic shows how much a stock adapter extends out past the sides of a regular box wrench.

 

[jds62f]

When an offset adapter is 90 degree from the wrench the torque is the same as the value on the torque wrench.

There are also equations to give you the torque with the adapter at any angle. But I cheat since I have access to a torque wrench calibrator. Whenever I make an oddball wrench like this I put it on the wrench straight out and figure out what I have to put on the wrench to make the torque at the end of the wrench correct.

I also calibrate my wrench on a regular basis.
Chris

Sorry to bump an aging thread, but this is the most recent topic on torque/extensions (and I'm already signed up for GJ), but this concept makes no sense to me.

If you put an extension on a torque wrench AT ANY ANGLE, you HAVE changed the length, haven't you? Torque should be measured from the handle to *where the torque is being applied,* yes? So if you add a crows foot at 90* to the handle, you've created a triangle (and the hypotenuse of a triangle, the actual distance between the handle and where the torque is being applied, is always greater than its legs).

So shouldnt you use the ol pythagorean theorem to calc the hypotenuse of the triangle, then feed that into an 'adjusted length' calculation for torque?

 

[jeremy v]

Sorry to bump an aging thread, but this is the most recent topic on torque/extensions (and I'm already signed up for GJ), but this concept makes no sense to me.

If you put an extension on a torque wrench AT ANY ANGLE, you HAVE changed the length, haven't you? Torque should be measured from the handle to *where the torque is being applied,* yes? So if you add a crows foot at 90* to the handle, you've created a triangle (and the hypotenuse of a triangle, the actual distance between the handle and where the torque is being applied, is always greater than its legs).

So shouldnt you use the ol pythagorean theorem to calc the hypotenuse of the triangle, then feed that into an 'adjusted length' calculation for torque?

Maybe this drawing will help you a little bit. The key is that the distance measurement that matters is not the straight line distance between the two points, but the distance measurement that is exactly perpendicular to the direction of the force generated by the pushing hand.

 

[plinker]

Like this but not home brew...

My serp. belt tool (Evercraft) came with a similar piece, except it's got a 1/2 drive male and the "bar" has a square hole for a 3/8 drive male ratchet/bar/ete... to be used with it.

 

[TwoInch]

My serp. belt tool (Evercraft) came with a similar piece, except it's got a 1/2 drive male and the "bar" has a square hole for a 3/8 drive male ratchet/bar/ete... to be used with it.

this is what i was thinking too. mine(cant remember brand) has a double square for multiple positioning.

its exactly what he is looking for if i am understanding correctly. from memory, mine is about 6" long.


edit- after rereading that last sentence....