kids pedal car - electrical conversion !

[routercnc]

Hi Clive
Yes, one wrong number in the calculations and the pitch spacing was wrong. An MDF prototype would have been a good idea. By the way I can’t open the pictures on my phone as it needs an app or something.
I ‘invested’ time writing a spreadsheet that works out the key geometry for any HTD 5 gear size you want. Watch me never need it again !

Hi pratt77
Thanks. Sounds interesting. Remember you don’t need anything as ambitious as my machine to make small parts. Whatever you build just leave yourself plenty of time as these projects eat up the months !

[routercnc]

Finally got some motion on the rear axle . . .

[Kitwn]

I ‘invested’ time writing a spreadsheet that works out the key geometry for any HTD 5 gear size you want. Watch me never need it again !

The rather splendid 'Gearotic' software from Art Fennerty will design many common styles of timing pulley for you, along with gears, gear trains, sprockets, ratchets, clock escapements and more wonders than you could ever imagine. All for one modest updates-for-life payment.

https://www.gear2motion.com/

kit

[routercnc]

Thanks Kit. Looks very interesting and comprehensive and as it is written or co-written by Art Fennerty (of Mach3 fame) I’m sure it will be a good product
At $120 I would need to make sure I was going to use it for something though.

[Kitwn]

Thanks Kit. Looks very interesting and comprehensive and as it is written or co-written by Art Fennerty (of Mach3 fame) I’m sure it will be a good product
At $120 I would need to make sure I was going to use it for something though.

Strangely enough I actually found it while looking for software to design HTD5 pulleys a few years back. Then I discovered it was designed to provide all the tools you need to design a wooden clock and decided to try one as a good project for my new and very flakey wooden-framed CNC router and was hooked. I have since designed a couple of quartz/GPS-locked, all wooden gears, electrically driven pendulum clocks, one of which has a working prototype, and have plans for constructing some other designs once I finally get a bandsaw and a stock of suitable hardwoods later this month. Be warned, this software can lead to a serious addiction!

I can't remember if I linked to it before, but this link is to the GPS-locked prototype.

Kit