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rubber winder

calculator counter

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john picton01/11/2013 13:26:06
31 forum posts
11 photos

Hi All, can anyone tell me how to connect a calculator to a micro switch which operates when the winder handle is turned please John

PatMc01/11/2013 17:04:26
3995 forum posts
500 photos

The calculators specified here probably won't be available now but the article explains the principle.

I made one years ago using the gearbox of a Megger & a cheap calculator. It worked but because the gear ratio was very high (IIRC 16:1) the calc couldn't keep up so I arranged the micro switch to operate from the input & multipled the result by 16. Of course after a few flights I knew how many winds each model took without the multiplication.

john picton01/11/2013 18:28:02
31 forum posts
11 photos

Hi Patmc

Thanks for the info, this sould solve the problem, regards John

ericrw30/07/2018 11:00:02
992 forum posts
19 photos

Can anyone recommend a mechanical winder, for a rubber powered model ??

Martyn K30/07/2018 12:08:31
4783 forum posts
3464 photos

How big the motor?

SAMS models have a range of lightweight winders suitable for indoor. For outdoor, I use a hand drill with the chuck removed and the shaft drilled to take a piano wire hook


J V R30/07/2018 12:15:26
320 forum posts
62 photos

How about this stich counter but I would like to say its not mine


Peter Christy30/07/2018 12:50:12
1192 forum posts

For my single-channel models with rubber driven escapements (yes, really!), I use an old hand drill with a "hook" made out of piano wire. The drill has around a 3 to 1 ratio.



Denis Watkins30/07/2018 13:00:00
3378 forum posts
151 photos

The vintage model company

Do one, great models too, and accessories

Mike Etheridge 130/07/2018 20:13:43
1470 forum posts
407 photos

You Single Channel guys should use one of these devices to wind up your rubber escapements. I am not sure where mine went after I converted my Junior 60 to proportional control?

side winder 2.jpg

Tom Sharp 230/07/2018 20:32:58
3299 forum posts
17 photos

28/- that was a weeks wages for a youth in those days

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