Author Topic: Bushing Stock  (Read 215 times)

Offline rgc

Bushing Stock
« on: March 20, 2020, 07:00:00 PM »
Howdy, I have searched the forums on "bushing stock", scoured metal supply, searched aircraft supply, etc., and cannot find 3/8" Bushing Stock referenced on Page 23 of Double Eagle Plans.  Aircraft Spruce is nearest with 1015/1020 3/8" OD, 1/4" ID, and .065 wall.  But the 1/4" is too big for the 3/16 bolts that will go through the hinge (note to ream to 3/16").  I have thought about 4130 chromoly tubing that is 3/8" OD & .095 wall.  The ID is then .185 which can be drilled to .185 or 3/16".  But, I cannot seem to tell 1015/1020 and 4130 are "interchangeable".  What did any of you guys use?  And, please, where did you find it??  Any assistance is appreciated.

rgc
rgc

Offline rgc

Re: Bushing Stock
« Reply #1 on: March 20, 2020, 07:13:04 PM »
Sorry, meant to type "which can be drilled to .1875 or 3/16", hopefully my math is correct.....
rgc

Offline scottiniowa

Re: Bushing Stock
« Reply #2 on: March 23, 2020, 12:46:04 PM »
Howdy, I have searched the forums on "bushing stock", scoured metal supply, searched aircraft supply, etc., and cannot find 3/8" Bushing Stock referenced on Page 23 of Double Eagle Plans.  Aircraft Spruce is nearest with 1015/1020 3/8" OD, 1/4" ID, and .065 wall.  But the 1/4" is too big for the 3/16 bolts that will go through the hinge (note to ream to 3/16").  I have thought about 4130 chromoly tubing that is 3/8" OD & .095 wall.  The ID is then .185 which can be drilled to .185 or 3/16".  But, I cannot seem to tell 1015/1020 and 4130 are "interchangeable".  What did any of you guys use?  And, please, where did you find it??  Any assistance is appreciated.

rgc
4130N is far better/tougher than 1010 or 1020, so you won't have any problems there. Most bushing stock is in 1/8" wall increments,  so a touch of calculations should get you to a point/piece that you can drill out.  

I don't know where you live, but any welding shop, Fastenal, even supply houses can get you these, if they are not on hand.
McMasterCarr for sure.
MSC for sure

Google is your friend here.  I didn't look up exactly what hinge you were referring to, but we have made for years out of the right combinations of 4130 to fit the bill  

If  you still don't have any luck, PM me, I would be surprised if I didn't have what you want on my rack.  But you should be able to find locally.


cheers
Scott
best email address:  irondesignairparts@gmail.com

Offline rgc

Re: Bushing Stock
« Reply #3 on: March 29, 2020, 06:53:16 AM »
Scott, thank you!

That tid bit very much helps.  I had looked all over but when it comes to the this fabrication stuff I really didn't know exactly what to plug in the search window.  To Leonard's direction "if a plane calls for new skills you don't have this is a good chance for you to learn them" ..... I think that now applies to my internet search skills too, lol...

I did happen upon McMaster a few days after posting.  But, I wasn't aware of Fastenal.  And, there are a few near me I'll try.  

And, most important, thanks, I suspected that 4130 would be good for "bushing stock" as per Leonard's plans, but I had just never heard that term before and didn't really understand what that term meant.  In fact on the plans it just says just "Bushing" which I didn't understand.  When I got on Aircraft Spruce and searched bushing, I got the "Bushing Stock" as noted previously which is where I wound up with the 1015/1020 type of metal.   I think I was chasing my tail .... 

rgc
rgc

Offline scottiniowa

Re: Bushing Stock
« Reply #4 on: March 29, 2020, 07:36:04 AM »
 

And, most important, thanks, I suspected that 4130 would be good for "bushing stock" as per Leonard's plans, but I had just never heard that term before and didn't really understand what that term meant.  In fact on the plans it just says just "Bushing" which I didn't understand.  When I got on Aircraft Spruce and searched bushing, I got the "Bushing Stock" as noted previously which is where I wound up with the 1015/1020 type of metal.  I think I was chasing my tail ....

rgc
I just want to be clear, I am not saying that "bushing stock" means that this needs to be 4130N, I was saying that if you have such material, it would work well/fine.  If plans call for 1015/1020 type, then that would be "good enough" and far cheaper. 

I just don't want everyone thinking, "scott says you have to use 4130N, for bushing stock" I simply said it would work. Often in the world of light aircraft building, good enough is good enough, and lower cost to boot.  Nearly all aircraft plans have call outs on, "what will work"  a google search will detail the "differences in materials" if in question.

A prime example is "stainless steel"  There is a huge difference from one type to the next... 
Best of success. 
Scott
best email address:  irondesignairparts@gmail.com

 


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