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Can you reweld a 701 cabin frame?

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tbonsell(at)luxuria.com
Guest

Posted: Tue Jan 31, 2006 12:41 pm Post subject: Can you reweld a 701 cabin frame?

Hi Guys!



Still toiling away on the 701, and I've got some good momentum going. I'm

currently joining the front and rear fuselage, very exciting, but I've hit a

brick wall.



I bought an old edition kit for the fuse because, well, I'm stupid and it

was cheap. I ended up having to rebuy a lot of 4th edition parts from Zenith

to keep it current. Looks like I may have to buy a new cabin frame now!

Which sucks because I'm up here in Canuckistan and it will cost a fortune.



It turns out they changed some of the angles between versions, by a couple

of degrees on the front tubes. Enough to totally miss the firewall and the

front horn of the cabin side. I got out the old plans, and it looks like I

could save it if I could, um, "adjust" those angles. The lengths are all

fine.



I certainly wouldn't try to do it myself (chicken), but do you guys think it

can be done without sacrificing strength? Would you cut through the weld on

one side, bend a little and then reweld? Or would you just heat up the tube

and bend? Or are you outraged at the very idea? 



*************************************************

Tony Bonsell (tbonsell(at)luxuria.com) CI-FKF

Luxuria + Apparatus Design Communications

535 Cragg Road, RR #3

Uxbridge, Ontario L9P 1R3

Voice: 905.852.3848 

http://www.luxuria.com



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keith.ashcraft(at)itt.com
Guest

Posted: Tue Jan 31, 2006 1:53 pm Post subject: Can you reweld a 701 cabin frame?

Hi Tony,

You can heat and bend. Do so in small amounts. 4130 is fairly forgiving 

for heating and re-normalizing. Don't try to bend to much at one time, 

as the way it works is on the inside of the bend the metal is being 

compressed into colder metal and the outside of the bend, the hot is 

being streched. This is a technique used for bending the axles for my 

Sidewinder. Although, the axle is a solid bar of steel, the process 

works the same. Once again, 4130 was designed for torch welding, bending 

and shaping.



Keith

**************************************************************************



Tony Bonsell wrote:



 	  Quote: 	
		  



Hi Guys!



Still toiling away on the 701, and I've got some good momentum going. I'm

currently joining the front and rear fuselage, very exciting, but I've hit a

brick wall.



I bought an old edition kit for the fuse because, well, I'm stupid and it

was cheap. I ended up having to rebuy a lot of 4th edition parts from Zenith

to keep it current. Looks like I may have to buy a new cabin frame now!

Which sucks because I'm up here in Canuckistan and it will cost a fortune.



It turns out they changed some of the angles between versions, by a couple

of degrees on the front tubes. Enough to totally miss the firewall and the

front horn of the cabin side. I got out the old plans, and it looks like I

could save it if I could, um, "adjust" those angles. The lengths are all

fine.



I certainly wouldn't try to do it myself (chicken), but do you guys think it

can be done without sacrificing strength? Would you cut through the weld on

one side, bend a little and then reweld? Or would you just heat up the tube

and bend? Or are you outraged at the very idea? 



*************************************************

Tony Bonsell (tbonsell(at)luxuria.com) CI-FKF

Luxuria + Apparatus Design Communications

535 Cragg Road, RR #3

Uxbridge, Ontario L9P 1R3

Voice: 905.852.3848 

http://www.luxuria.com



*************************************************

 

 

 





  




	


-- 



*************************************



*Keith Ashcraft*



ITT Industries



Advanced Engineering & Sciences



5009 Centennial Blvd.



Colorado Springs, CO



                      80919



(719) 599-1787 -- work



(719) 332-4364 -- cell



keith.ashcraft(at)itt.com

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frank.hinde(at)hp.com
Guest

Posted: Tue Jan 31, 2006 2:55 pm Post subject: Can you reweld a 701 cabin frame?

I think Larry would add two further cautions...



1) Be careful not to kink the tube

2) Do not cool it too fast...Keep playing the flame over the heated area

to cool slowly.



Frank 



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keith.ashcraft(at)itt.com
Guest

Posted: Tue Jan 31, 2006 5:07 pm Post subject: Can you reweld a 701 cabin frame?

Well put!!!



Keith

(still pounding those little 3mm flanges on those little things call 

flaperon and slat ribs!! Of course, in the Snow)

Alt. 9,100'



***************************************************



Hinde, Frank George (Corvallis) wrote:



[quote]



I think Larry would add two further cautions...



1) Be careful not to kink the tube

2) Do not cool it too fast...Keep playing the flame over the heated area

to cool slowly.



Frank 



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moorecomp(at)yahoo.com
Guest

Posted: Wed Feb 01, 2006 8:53 am Post subject: Can you reweld a 701 cabin frame?

All,



Wouldn't this be best answered by asking CH himself?

Obviously, some feel it would be ok to bend it, some

feel it is ok to cut it. I would want the final word 

to come from ZAC.



Craig Moore

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ggower_99(at)yahoo.com
Guest

Posted: Wed Feb 01, 2006 11:48 am Post subject: Can you reweld a 701 cabin frame?

To this kit owner:

   

  From previous post, I remember that you bought the KIT  second hand,   

   

  No problem contacting ZAC,  What you need to do is to change the name of the owner in the serial number data they have.   Ask them for all things:  The welds,  advise over important mods needed since your kit and how to change the owners name.    

   

  What ever: Safety first,   Hope everything comes OK with your kit,,,   As we say here, "Sometimes buying cheap, ends more expensive".         

   

  Saludos

  Gary Gower



Craig Moore <moorecomp(at)yahoo.com> wrote:

  



All,



Wouldn't this be best answered by asking CH himself?

Obviously, some feel it would be ok to bend it, some

feel it is ok to cut it. I would want the final word 

to come from ZAC.



Craig Moore

		

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