gears for hand winder

[capnahabParticipant @capnahab]

I want to make a 10:1 winder for rubber powered model planes. The recommended gears are 12,24, 48 and 60 teeth.

I want it to last (even though it could be overkill am happy w EN8 gears).

What would be the best gear material and where to buy ?. I don't want to make them.

[capnahabParticipant @capnahab]

[Ramon WilsonParticipant @ramonwilson3]

I recognise that page instantly ! I still have the book which I bought must be forty years ago. I wore the print off the page at one point.

Had quite an interest in indoor at one time – only the other day I found two tapered mandrels I'd made for making rolled tail booms lurking in the back of a drawer

I can't recommend the gears but I'm pretty certain I still have one of those yellow and white commercial 10- 1 winder up the loft – if I do you are welcome to it.

What kind of models are you interested in? I was never a scale person but made many 'half scale' commercial kit models of my youth for indoors – KK Senator, Ace, Veron Sentinel etc. Also liked the Penny Plane and EZB designs too

I shall be off line for a week later today but if you PM me I'll respond as soon as I'm back on

Tug

[EmgeeParticipant @emgee]

The last time I saw a winder being used was by a UK Free Flight Team member at a test session prior to a World Championship. The winder acted in axial alignment with the length of the fuaelage which enables the motor to be stretched out and wound, retracting into the fuselage in stages so there are multiple what I term "knots" in the motor for maximum performance from the weight of motor.

The plans shown will place the winder at 90 degrees to the motor axis so be more difficult to use if stretching and winding as described above.

If Martin sees this he may have further helpful comment from an expert in the field.

Emgee

[John HaineParticipant @johnhaine32865]

Nowadays doesn't everyone use a battery drill?

[JasonBModerator @jasonb]

Probably easier to change the design to use metric MOD gears, 0.5MOD would be the closest to the original 48DP.

I've used beltingonline a few times as they are usually cheaper than HPC, they also list plastic ones

[noel shelleyParticipant @noelshelley55608]

DAVALL stock gears do a vast range in plastics and metal. Good luck. Noel

[capnahabParticipant @capnahab]

Thanks Ramon, that is the best book about building planes. Still very relevant. I will message thank you very kind.

Emgee you are right, a bit like a modified hand drill though they are for outdoor free flight where the ‘motor’ is much thicker braided rubber. This is for the much more delicate indoor. Here’s a commercial one – $395.

John – need the torque feedback, – so not if you want to know how tight your rubber is.

Cheers Jason and Noel. I have found exactly what I need on beltingonline.

[Ramon WilsonParticipant @ramonwilson3]

Well you are in luck Cap'n but only sort of as this is a much simpler version than you show but it will I assure you will work just as well at the kind of level you need for the rubber section involved if you make a simple torque meter to attach the rubber to when winding if measuring/gauging torque is required.

It's always best to wind off the model anyway as I'm sure you are aware.

Sue and I used this for years of indoor flying back as far as the early eighties. Unfortunately all of the indoor 'stuff' collected over that time was passed on to someone who was so-oo interested who then passed it on to someone else who was much the same – totally wasted I'm afraid.

I do have a fair amount of 36 x 2 1/32 balsa of varying grades that you are welcome too as well – not actual 'indoor' quality, never the less it was well chosen for the purpose.

If you are making your own kit for the hobby and you have not made a beam balance yet then theres one of them too sitting up the loft. I can't do it today now but I will take a pic for you next week.

There is little left of our involvement in indoor flying but what there is you are welcome too – it is extremely unlikely it will do anything but languish where it is for posterity so it would be good to see it go to someone who will get some use out of it

The Williams book was a game changer when it came out – I saw my copy quite by chance in a local book shop. I still have it but gave away the others I had – none were in the same league though.

We flew locally and occasionally at Cardington which was an awesome experience.

 

Best – Tug

PS Much to my wife's horror a friend and I had our lounge looking like the pic in the book when making some microfilm. A heavy odour of dope and dripping frames all round the room when she arrived home. Making it was easy enough getting it light enough was a different matter. Ah happy days

 

Edited By Ramon Wilson on 17/09/2022 11:35:19

[Ramon WilsonParticipant @ramonwilson3]

Though a completely different kettle of fish and at the other end of the spectrum to that discussed previously, take a look at this video if you are interested to see a model airplane rubber(elastic) motor being wound.

Whilst the principle is identical the torque involved is far in excess of that of any indoor motor.

[capnahabParticipant @capnahab]

That F1B is amazing. The nose mechanism is a masterpiece of miniature engineering.
thanks for your kind offer Tug. Pm sent.

[Ramon WilsonParticipant @ramonwilson3]

Nick – if you read this – you have a PM

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