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  #1  
Old 11-22-2013, 12:15 PM
jtrollin jtrollin is offline
 
Join Date: Aug 2008
Location: Leesburg, va
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Default Rolling steel tube

Anyone know where I can get some 1" 4130 rolled? I need to modify my sticks in my RV-10 and need a piece of steel tube rolled so it has a radius to it to match the existing stick bend. Tried about 20 local places with no luck.

thanks,
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  #2  
Old 11-22-2013, 12:37 PM
deek deek is offline
 
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Default

Try a local hot rod shop that does mandrel tube bending. If they have a mandrel that matches the ID of your DOM 4130 it should be easy and relatively inexpensive.
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  #3  
Old 11-22-2013, 12:53 PM
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Mike S Mike S is offline
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Try Russ, he makes stuff for Vans----maybe the sticks??

http://www.vansairforce.com/community/member.php?u=2228
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  #4  
Old 11-22-2013, 01:53 PM
N15JB N15JB is offline
 
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Default

If this is to increase the clearance between your stick and the bottom of the panel, some builders have had muffler shops bend a smaller radius in the stick. Others have used the HF bending kit to do the same.

Jim Berry
RV-10
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  #5  
Old 11-22-2013, 03:02 PM
TS Flightlines TS Flightlines is offline
 
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Default

you have to be carefull of the dies you use, and how much of a bend you make. You can kink the tube---which is bad.
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  #6  
Old 11-22-2013, 03:16 PM
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Russ McCutcheon Russ McCutcheon is offline
 
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Quote:
Originally Posted by Mike S View Post
Try Russ, he makes stuff for Vans----maybe the sticks??

http://www.vansairforce.com/community/member.php?u=2228
He asked, I could not help him, don't have a way to roll the tubing.
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  #7  
Old 11-22-2013, 03:52 PM
deek deek is offline
 
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Quote:
Originally Posted by TS Flightlines View Post
you have to be careful of the dies you use, and how much of a bend you make. You can kink the tube---which is bad.
If a good ball mandrel is used bends at r=1.5D can be easily made, even in thin wall tubing. If you can't find a good horizontal bender with ball mandrel tooling see if you can find someone with a Pines 3T vertical compression bender; the wing dies on a 3T can do an okay job of simulating a "rolled" curve.
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Last edited by deek : 11-22-2013 at 05:08 PM.
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  #8  
Old 11-23-2013, 05:51 PM
FredMagare FredMagare is offline
 
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It seems that one might be able to mitigate the tendency of a tube to kink while bending it by first filling it with sand. I've never bent tube before though....
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  #9  
Old 11-24-2013, 08:11 AM
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Marc DeGirolamo Marc DeGirolamo is offline
 
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Location: Saskatoon,Saskatchewan,Canada
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Default Bending 4130

Unless you have the proper mandrels don't even try to bend this stuff.....it will kink no matter how careful you are.....that's been my experience anyway...
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  #10  
Old 11-24-2013, 08:19 AM
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Marc DeGirolamo Marc DeGirolamo is offline
 
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Default Nope wont work

Quote:
Originally Posted by FredMagare View Post
It seems that one might be able to mitigate the tendency of a tube to kink while bending it by first filling it with sand. I've never bent tube before though....
I tried that..... Even welded a bolt onto one end to pack the sand......result 'kink'. . This procedure does work with mild steel pipe though.
Maybe for a bend of a few degrees it would turn out OK( you are just likely not seeing the deformation) ??
Even when heated there is still a lot of strength (resistance) to overcome when bending.....and the sand deforms too easily.....thats my theory anyway!!??
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Last edited by Marc DeGirolamo : 11-24-2013 at 08:20 AM. Reason: Remove unwanted letter
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