Homebuilt-List Digest Archive

Sun 06/24/18


Total Messages Posted: 2



Today's Message Index:
----------------------
 
     1. 04:04 PM - Re: Bicycle Tubing as a Source for Aircraft? (BruceClemens)
     2. 04:51 PM - Re: Re: Bicycle Tubing as a Source for Aircraft? (Glen Schweizer)
 
 
 


Message 1


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    Time: 04:04:34 PM PST US
    Subject: Re: Bicycle Tubing as a Source for Aircraft?
    From: "BruceClemens" <clemensfam3@sbcglobal.net>
    gerry.vandyk(at)eastlink. wrote: > What parts would you consider to be 'non-critical'? I have only my own > project to judge by, but I can't think of anything off hand that I would > consider replacing with 'other' material. Then again, I had plenty of > off cuts from building the primary structure, it covered pretty much all > the other parts anyway. > > Gerry > > ---- Thank you, Gerry. You make much sense. With regard to "non-critical", I am thinking of things that do not deal with aerodynamic loads, or are load bearing components of the structure of the aircraft, of course. You make perfect sense saying that one who builds a tubular airframe will have plenty of off-cuts to make ancillary components. But, in my case, I am building an all-wood Peit. There are few metal tubes. Most seem to be in what I would call less-critical (e.g. non load bearing) uses, such as the control group including the sticks, the tube they connect to and the rudder bars. I agree, I would never use unknown metal in the other metal parts such as engine mount, landing gear, gussets, or control hinges. But in an Experimental aircraft is there really a need to use and pay for specific metals in parts that will perform flawlessly with at least as much certainty as the expensive stuff? I just finished reading and saving a treatise about using used motorcycle wheels on a Piet landing gear. This, I think, is representative of the spirit of homebuilt experimental aircraft. Some folks say that they would never fly with someone who used non aircraft-specific components on their product. But that would preclude them from flying with many very good homebuilders. Thanks! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=481177#481177


    Message 2


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    Time: 04:51:45 PM PST US
    From: Glen Schweizer <glenschweizer@yahoo.com>
    Subject: Re: Bicycle Tubing as a Source for Aircraft?
    All I can add is food for thought. No one can say that substitution does work. Do you really want to be the first mouse? Id rather b the second mouse > On Jun 24, 2018, at 4:04 PM, BruceClemens <clemensfam3@sbcglobal.net> wrote: > > > > gerry.vandyk(at)eastlink. wrote: >> What parts would you consider to be 'non-critical'? I have only my own >> project to judge by, but I can't think of anything off hand that I would >> consider replacing with 'other' material. Then again, I had plenty of >> off cuts from building the primary structure, it covered pretty much all >> the other parts anyway. >> >> Gerry >> >> ---- > > > Thank you, Gerry. You make much sense. With regard to "non-critical", I am thinking of things that do not deal with aerodynamic loads, or are load bearing components of the structure of the aircraft, of course. > > You make perfect sense saying that one who builds a tubular airframe will have plenty of off-cuts to make ancillary components. > > But, in my case, I am building an all-wood Peit. There are few metal tubes. Most seem to be in what I would call less-critical (e.g. non load bearing) uses, such as the control group including the sticks, the tube they connect to and the rudder bars. > > I agree, I would never use unknown metal in the other metal parts such as engine mount, landing gear, gussets, or control hinges. > > But in an Experimental aircraft is there really a need to use and pay for specific metals in parts that will perform flawlessly with at least as much certainty as the expensive stuff? > > I just finished reading and saving a treatise about using used motorcycle wheels on a Piet landing gear. This, I think, is representative of the spirit of homebuilt experimental aircraft. > > Some folks say that they would never fly with someone who used non aircraft-specific components on their product. But that would preclude them from flying with many very good homebuilders. > > Thanks! > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=481177#481177 > > > > > > > > >




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