Tool Questions

[Creed]

I am collecting tools to do my first regulator rebuild(a Conshelf XIV). The manual talks about "crows-foot"(9/16", 5/8",3/4",1-3/8"). I have had conflicting responses as to what exact tool they are referring to. Can someone point me to the correct tool? Thanks.

 

[cool_hardware52]

I am collecting tools to do my first regulator rebuild(a Conshelf XIV). The manual talks about "crows-foot"(9/16", 5/8",3/4",1-3/8"). I have had conflicting responses as to what exact tool they are referring to. Can someone point me to the correct tool? Thanks.

A crow's foot, at least in this part of the world, looks like the very end of a open end wrench, with a square drive hole for a ratchet drive.

http://buy1.snapon.com/catalog/pro_...5&group_ID=270&store=snapon-store&dir=catalog


Regards,


Tobin

 

[sauga]

I hate to use the "C" word, but the Craftsman stuff is much cheaper and widely available. I'm guessing they want you to torque certain parts, hence the reason you would need* them.

John

*Note: Yes, I am aware that there are other reasons for needing a set of these. However, for regulator rebuilding, access is generally not an issue, and if it is, it's usually addresses by a special tool.

 

[Creed]

OK, I am curious where everyone else gets their tools. Scubatools.com is an obvious one. However, for the more general tools, does anyone have some particular favorites? Snap-on is usually pretty pricey for basic tools.

 

[redacted]

Scubatools for a few, Craftsman for most, and homemade for some. For example, in lieu of crowsfoot wrenches, I use std open end wrenchs with a socket cut to fit over the handle for applying measured torque. Gave me something to do with all those odd sockets I have collected. Also works for torquing allen head fittings.

 

[DA Aquamaster]

Great idea for eliminating the need for crows foot wrenches.

 

[cool_hardware52]

Don't want to rain on anybody's DIY parade, but I thought I should point out if one uses a torque wrench with an "offset" end effector, such as a crow's foot, or end wrench with cut socket adapter etc. the applied torque will differ from the setting (or gauge) on the wrench.

Torque wrenchs assume that the center of rotation i.e. the center of the fastener is concentric with the square drive of the wrench.

Regards,



Tobin

 

[redacted]

Don't want to rain on anybody's DIY parade, but I thought I should point out if one uses a torque wrench with an "offset" end effector, such as a crow's foot, or end wrench with cut socket adapter etc. the applied torque will differ from the setting (or gauge) on the wrench.

Torque wrenchs assume that the center of rotation i.e. the center of the fastener is concentric with the square drive of the wrench.

Regards,



Tobin

Offset that lengthens or shortens the lever arm will change the actual torque applied. If the offset is perpendicular to the arm, it will have no (little) effect on the torque value.

 

[cool_hardware52]

Offset that lengthens or shortens the lever arm will change the actual torque applied. If the offset is perpendicular to the arm, it will have no (little) effect on the torque value.

True enough.


Tobin

 

[android]

There are tables available that have the torque delta for various size crow's feet. We used them in the Navy. Perpendicular access wasn't usually an option.