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Tinnermans eating screws
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Tinnermans eating screws
by mike.smith » Thu Oct 10, 2013 12:40 am
I am using the U-type tinnerman fasteners on my cowl:
http://www.aircraftspruce.com/catalog/h ... kkey=62675
I have been using stainless steel machine screws to screw into them. But the tinnermans are eating up the threads on the machine screws. I only get 1 or 2 uses out of the screws and then they have to be thrown away. Do I need some other kind of screw, or is there a softer version of these tinnermans?
Mike Smith
http://www.aircraftspruce.com/catalog/h ... kkey=62675
I have been using stainless steel machine screws to screw into them. But the tinnermans are eating up the threads on the machine screws. I only get 1 or 2 uses out of the screws and then they have to be thrown away. Do I need some other kind of screw, or is there a softer version of these tinnermans?
Mike Smith
Mike Smith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
- mike.smith
- Posts: 1413
- Joined: Tue Jan 29, 2013 8:45 pm
Re: Tinnermans eating screws
by Bryan Cotton » Thu Oct 10, 2013 10:39 am
Mike,
I have never seen machine screws used with tinnermans. The 140 used them extensively but always with sheet metal screws.
I have never seen machine screws used with tinnermans. The 140 used them extensively but always with sheet metal screws.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
-
Bryan Cotton - Posts: 5099
- Joined: Mon Jul 01, 2013 9:54 pm
- Location: C77
Re: Tinnermans eating screws
by mike.smith » Fri Oct 11, 2013 12:21 am
Well, then that might be the explanation. Machine screws have much tighter threads than sheet metal screws. I must have missed that in my A&P class. Oh, wait a minute. I never went to A&P school. Explains a lot ;-)
Mike
Mike
Mike Smith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
- mike.smith
- Posts: 1413
- Joined: Tue Jan 29, 2013 8:45 pm
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