FROG Spitfire - Electric Free Flight
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- Опубліковано 29 вер 2024
- FROG Junior Spitfire for electric freeflight. Plans available from www.houseoffrog.co.uk/junior_scale.htm
Wingspan: 11.75"
Weight: 13.7g
Motor: 612 coreless
Battery: 70mAh lipo
Timer: Peterborough Push Button Sport (etched circuit board)
Very nice. I have just bought one of ghost cheap Chinese toys with a charger/timer/lipo setup and plan to use the electronics in a simple free flight mode. Your video is very timely! I hope my effort flies as well as yours.
Cute little plane! Thx for sharing.
That was cool. I thought about scaling one up to do it as RC.
Wow! Very stable, I thought for a second it was RC. Still waiting for your band burner circuit details!
In the end I didn't pursue that circuit as it had some issues. It needed a fairly large battery to be reliable and it didn't work well with onboard supply for an electric model. I have since developed more reliable DTs based on a double 555 Timer.
Woow !!! What a beauty!!!
Nice!
This is great, thank you. Could you show a similar set up for a converted scale rubber powered model, thanks again.
This is a converted rubber powered plan :) I've built a few of the Junior Series as rubber models and they are fun if built light enough.
No side-thrust on the motor so the Spitfire turns left by the propeller wash ?
Yes, I think so - it was hard to get a consistent flight pattern with the wing warps.
@@slowmatch7612 Thanks for your reply.
What does the timer do?
It starts the motor an stops it again
Nice video. May I know what battery you are using? Can you provide a link? Thank you so much!
@linsfunbox4952 I think this one would be an Eflite 1S 70mAh from their mini RC models such as the vapour. But any small one cell lipo should work.
@@slowmatch7612 Thank you for your replying. I tried to use a fully charged 551521 3.7 V lipo to connect to a 3.7V motor with JST, but it was not working. Only ran for 1 second and stop. Not sure if I picked a wrong batteries.
This is what happened when I connect lipo to motor...
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@@linsfunbox4052 Unfortunately that battery is intended for long duration, low power applications. It has a discharge protection circuit limited to 0.12 Amps current. Your motor will draw more like 1-2 Amps so it triggers the cut off. It is possible to remove the small circuit board in the battery but it's a fiddly job!
@@slowmatch7612 Thank you so much! I think I will pick a right one for motor. It is not safe to remove something from battery. Thank you!
@@linsfunbox4052 the circuit board is not within the battery capsule, just under the yellow tape. But yes, obviously it's wise to be careful and not do something you are not comfortable with. Look for batteries with a 20C rating or more - the Eflite and Nanotech ones do not have a protection circuit. The circuit is not a problem as long as it is rated for the current your motor draws, for example: www.micronradiocontrol.co.uk/lipo_1s.html