Forums: Climbing Information: Gear Heads:
Bolting Question--Rawl 1/2" bolts/hangers
RSS FeedRSS Feeds for Gear Heads

Premier Sponsor:

 


foxtrotuniform


Nov 14, 2005, 6:08 PM
Post #1 of 7 (1057 views)
Shortcut

Registered: Aug 3, 2005
Posts: 116

Bolting Question--Rawl 1/2" bolts/hangers
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

I've got a question about what hangers will fit Rawl/Powers 1/2" bolts safely.

I have a pile of Fixe 3/8" hangers, and 3/8" Powers 6 piece bolts. For the application I'm using them for, however, I'd like to step up to Powers 1/2" bolts.

Now for anyone who knows how the Powers bolts work, the 1/2" bolts have a 3/8" bolt shaft, and the sleeve diameter is 1/2". My question is, is it safe to place the hanger on the shaft between the bolt head and the sleeve?

Does this affect the overall shear strength of the bolt? I can see no reason why it can affect the pullout strength, and my intuition says that that sleeve does not add much structurally to the strength of the bolt in shear pull configuration.

Still, it would be nice if anyone has any experience with setting bolts like this, or has seen any ultimate load test results in this nonstandard configuration.


boltdude


Nov 14, 2005, 7:11 PM
Post #2 of 7 (1057 views)
Shortcut

Registered: Sep 29, 2002
Posts: 685

Re: Bolting Question--Rawl 1/2" bolts/hangers [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

No worries, 3/8" hole hangers are fine. Stainless steel 1/2" 5-pieces have a very thin section of the sleeve that you just remove (used to be a separate piece of the blue sleeve, now it is metal), if you wanted to be super precise on the non-stainless, you could shorten the upper sleeve (or blue sleeve) by a fraction. Fixe hangers are slightly thicker than Petzl or most other hangers.

However, if you use 1/2" 5-pieces with very thick hangers - like the Metolius rap hangers - you do need to shorten the sleeve. For the longer 5-piece, I just hacksaw the upper sleeve about 1/3" or so. I've never used the Metolius rap hangers with short 1/2" 5-pieces, it would probably not be safe to shorten the main expansion sleeve.


socalbolter


Nov 14, 2005, 7:21 PM
Post #3 of 7 (1057 views)
Shortcut

Registered: Mar 26, 2002
Posts: 796

Re: Bolting Question--Rawl 1/2" bolts/hangers [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

As always, Greg's advice is spot on.

Happy bolting!


Partner grovehunter


Nov 14, 2005, 8:49 PM
Post #4 of 7 (1057 views)
Shortcut

Registered: Sep 29, 2005
Posts: 227

Re: Bolting Question--Rawl 1/2" bolts/hangers [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Boltdude is exactly right! Don't alter the main expansion sleeve, 'taint safe. The rest is cool though. I use them frequently to mount storefront metal into concrete. They will hold till the cows come home...


asandh


Nov 14, 2005, 9:09 PM
Post #5 of 7 (1057 views)
Shortcut

Registered: Nov 13, 2002
Posts: 788

Re: Bolting Question--Rawl 1/2" bolts/hangers [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

:)


chossmonkey


Nov 14, 2005, 9:16 PM
Post #6 of 7 (1057 views)
Shortcut

Registered: Feb 1, 2003
Posts: 28414

Re: Bolting Question--Rawl 1/2" bolts/hangers [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Don't hacksaw galvanized bolts. While it shouldn't matter with stainless, cutting through the zinc coating will cause the sleeve to start rusting the day it is put in.

For most hangers, ditching the washer will give you enough room. On 1/2" bolts the washer is unnessesary.


foxtrotuniform


Nov 15, 2005, 7:04 AM
Post #7 of 7 (1057 views)
Shortcut

Registered: Aug 3, 2005
Posts: 116

Re: Bolting Question--Rawl 1/2" bolts/hangers [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

I understand everything, thanks for the help everyone!


Forums : Climbing Information : Gear Heads

 


Search for (options)

Log In:

Username:
Password: Remember me:

Go Register
Go Lost Password?



Follow us on Twiter Become a Fan on Facebook