Brass Tubing  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> Questions and Answers >> Brass Tubing
Page: [1] 2   next >   >>  

Login
Message << Older Topic   Newer Topic >>
Brass Tubing - 2/11/2003 4:34:32 AM   
fly4food18


 

Posts: 108
Joined: 6/4/2002
From: Clovis, CA, USA
Status: offline 		I am working on my fuel tank, and i am having trouble bending the brass tubes with out denting them. As i bend them they seem to form a dent away from where i am bending them. Is there a way to bend the tubing with out doing this. My Local hobby shop doesn't have the tool that dubro makes, I have asked them to order it for 3 weeks now and nothing.

Any advice will help me.

Thanks
fly boy
       Post #: 1

Brass Tubing - 2/11/2003 5:10:09 AM   
mscic-RCU



Posts: 965
Joined: 3/29/2002
From: New London, OH,
Status: offline 		try bending it around a piece of pipe, like 1/2" or 3/4" pvc or copper. you can bend it by hand, but you must go slow and try not to make the radius of the curve to sharp.

(in reply to fly4food18)
       Post #: 2

Brass Tubing - 2/11/2003 5:13:36 AM   
rcalfred



Posts: 391
Joined: 12/7/2001
From: Elk Grove Village, IL, USA
Status: offline 		Sometimes the brass tubing we get is hard. One way to help with bending it is to anneal it. Heat it with a propane torch and it will soften it. Experiment a bit to get the right amount of heat--it will be surprisingly high! Regards.


_____________________________

Al Sortwell
AMA 15663

(in reply to fly4food18)
       Post #: 3

Brass Tubing - 2/11/2003 5:18:42 AM   
Stick Jammer



Posts: 2251
Joined: 11/21/2002
From: Crete, IL, USA
Status: offline 		Make a run to the hardware store and find the stiffest spring that has an inside diameter that just fits snugly over your tubing and is long enough to cover the intended bend. Put the spring over the section that you want to bend and go to it. The spring will keep the tubing nice and round, then just remove the spring by twisting and pulling.

(in reply to fly4food18)
       Post #: 4

Brass Tubing - 2/11/2003 5:25:20 AM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		Put a piece of wire inside the brass tube then bend it.
Once bent, remove the wire.

_____________________________

Aircraft Proving Grounds
http://www.rcaircraft.net/
Information on the building and flying of Radio Control Aircraft.
Site for hobbyist in the R.C. Aircraft modeling world.

(in reply to fly4food18)
       Post #: 5

Brass Tubing - 2/11/2003 5:44:11 AM   
tpstorey



Posts: 257
Joined: 11/18/2002
From: Saint Louis, MO, USA
Status: offline 		I use a piece of .08" weed whacker nylon line inside the tubing. This seems to be the perfect size for bending the tubing that comes with fuel tanks, copper or aluminum. You can get very tight bends without kinking and the line is slick enough that it pulls out easily when finished.

(in reply to fly4food18)
       Post #: 6

Brass Tubing - 2/11/2003 6:37:52 AM   
Ernie Misner


 

Posts: 3166
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline 		Now for the micky mouse way.... but it works if you don't have any tubing bender tools at your disposal. Take a pair of needle nosed pliers and start making your bend. It will put little kinks in the tubing. Now take a regular pair of pliers and squeeze the tubing from the sides and it will flatten out the kinks. Repeat... and go slowly.

Ernie

(in reply to fly4food18)
       Post #: 7

Brass Tubing - 2/11/2003 7:12:13 AM   
big max 1935


 

Posts: 1679
Joined: 11/22/2002
From: huron s.d.
Status: offline 		Bought 1/8" copper tube from auto parts house. Some sell by ft. Bends easy. >>>>>>>>big max 1935

(in reply to fly4food18)
       Post #: 8

Brass Tubing - 2/11/2003 11:39:50 AM   
Hircflyer



Posts: 773
Joined: 12/6/2001
From: Kailua, HI, USA
Status: offline 		Fill it full of sand... tape the ends ...then bend.....works well.

_____________________________

Finally! Everyday is a weekend

(in reply to fly4food18)
       Post #: 9

Brass Tubing - 2/11/2003 12:28:23 PM   
Ernie Misner


 

Posts: 3166
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline 		>>> Bought 1/8" copper tube from auto parts house. Some sell by ft. Bends easy. >>>>>>>>big max 1935

Hi Big Max - copper or brass? Doesn't copper corrode with glow fuel?

Ernie

(in reply to fly4food18)
       Post #: 10

Brass Tubing - 2/11/2003 8:28:04 PM   
big max 1935


 

Posts: 1679
Joined: 11/22/2002
From: huron s.d.
Status: offline 		Ernie :Can`t say that I have by using copper had any trouble with corrosion, but I always have made sure tanks were empty after flying. Then again it could be that my planes don`t last long enough for corrosion to set in!! Bought a 25ft roll of it years back & am still nibbling at it, bought from NAPA >>>>>>>>>> big max 1935

(in reply to fly4food18)
       Post #: 11

Brass Tubing - 2/11/2003 8:31:51 PM   
Tippie



Posts: 298
Joined: 12/22/2002
From: Private, GA, USA
Status: offline 		Wire, weed wacker line, sand (works good for large tubing) inside the tube and bending the tube inside a tight spring are all good ideas that work. Sorry Ernie, pliers don't sound 'neat' to me. Pay attention to 'big max 1935', he as nearly 100 years of experience, or is it 90, no 85, could be 67. HA

(in reply to fly4food18)
       Post #: 12

Brass Tubing - 2/11/2003 10:35:59 PM   
MinnFlyer



Posts: 20204
Joined: 4/22/2002
From: Willmar, MN, USA
Status: online 		I often do the copper tubing thing too. It only costs 50 cents a foot at the Auto Parts store, and I usually run it from the tank right through the firewall. That way, there's no fuel line that can break, leak, slip off, etc. somewhere that's not easily accessable. (and it bends like a dream compared to brass)

_____________________________

Mike B.
AMA# 42400 www.gettingairborne.com

"Those are my principles. If you don't like them, I have others." - Groucho Marx

(in reply to fly4food18)
       Post #: 13

Brass Tubing - 2/12/2003 12:23:05 AM   
big max 1935


 

Posts: 1679
Joined: 11/22/2002
From: huron s.d.
Status: offline 		Just a short tip, I buy a 1/8" copper compression fitting sleeve & solder it on the tubing leaving about 1/8"of tube sticking out of it. This will also fit 1/8" brass tube. That & a clamp you will never have a line slip off! Really think this would work great on pressure smoke systems, you know how messy that smoke oil is! >>>>>>>>>>big max 1935 AMA 14958

(in reply to fly4food18)
       Post #: 14

Brass Tubing - 2/12/2003 2:28:30 PM   
WORNBOOTS



Posts: 1018
Joined: 8/7/2002
From: Princeton, TX, USA
Status: online 		Usually small screw drivers have a groove around the handle, after inserting a solid line like string trimmer or solid wire I lay it in the groove of the size I want. My small craftsman pocket screwdriver works good for tank 90's

Dan Z

_____________________________

**Enjoy the Thrill of Flight' Become an R C Pilot**
*I enjoy building 70's Kits as originally produced--Dan Z

(in reply to fly4food18)
       Post #: 15

Brass Tubing - 2/12/2003 2:52:27 PM   
Cactus.



Posts: 6138
Joined: 12/19/2001
From: CamborneCornwall, UNITED KINGDOM
Status: offline 		might have been said but forget brass, drubro and the like should be banned from selling these tanks. every single one rots, wether you empty it or not, i had another break on my Cougar the other day, there was the tinyest gap showing. its not fuel in the tube, its something in the air in the tank.
i used snake outer to replace the brass, hot water bends the snake nicely.
look at my Cougar review to view pics on this [url]www.philsrcworld.fsnet.co.uk/cougarreview.htm[/url]

_____________________________

My half dead website www.philsrcworld.fsnet.co.uk new site coming soon.
Redruth & District model flying club www.rcflye

(in reply to fly4food18)
       Post #: 16