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Rail button w/standoff's
#1
Does anyone know of a supplier of rail-buttons (1010) that are thicker on the bottom to serve as a standoff so the rail doesn't scratch the airframe?? I know of separate standoffs but they tend to move the rail too far. Ive seen Ken with some larger 1212 buttons that have a thicker bottom but he doesn't have pictures on his website.


Thanks 
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#2
No I haven't seen rail buttons as such.  How about use a nylon washer or 2 to get more distance?
John Derimiggio
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#3
Yep, Ive done that on a number of my rockets. Its just interesting that no has come up with these yet. Same with switches, I have yet to find an altimeter switch I like. 
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#4
Good altimeter switches don't exist, I've looked.  I want a clean airframe, so internal switch.... that you have to find through a hole in the rocket while on tiptoe at a pad...  I've done screw switches (homemade, and the little ones from Featherweight) and latching push-on, push off switches (mounted sideways internally, ya poke 'em with a stick).  Neither one is always the answer depending on rocket diameter.

I see why featherweight altimeters tried out the magnetic switch idea, it's pretty easy to use (if it's close to the surface of the rocket, from what I hear)

N
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#5
(10-29-2013, 09:06 PM)Nat Kinsey link Wrote: Good altimeter switches don't exist, I've looked. 
N

Nonsense.

Edit: Want a clean airframe. Mount this switch on the inside of your alt bay with a window to access the slide.
Strong detent on the position but if you are nervous just insert a block in on the slide and tape over.
10A contact rating, DPDT allows switching two altimeters at once.
About $5 from mouser.com
[Image: V;maxh=98,maxw=98.jpg]
John Derimiggio
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#6
That could work well, especially if mounted at 90 degrees to the vertical to keep the "g load" crowd happy.  Now to find them or similar in solder lug termination.

N
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#7
The one pictured is solder lug.
John Derimiggio
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#8
I spoke with Ken and he has the buttons that I am looking for. Listed on his site as "extreme rail buttons" for the 1515 and "Jr" for the 1010. He sells them with a rubber expanding plug with I do not use but the buttons have a nice standoff from the airframe. 


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John K.

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