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| Electric Flight Discuss Electric Flight in Canada |
Topic Review (Newest First)
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| 01-03-2015 07:50 AM | |
| d_orgera |
Re: Prop change formula? static thrust calculator can be found here: http://personal.osi.hu/fuzesisz/strc_eng/ |
| 01-03-2015 06:02 AM | |
| Singleminded |
Re: Prop change formula? thanks guys...I guess I'll try a couple of props while using my watt meter to ensure I don't over prop and burn up the ESC or the motor! 
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| 01-02-2015 05:50 AM | |
| OLD PRAIRIE RED NECK |
Re: Prop change formula? I'm not aware of any formula. The suggestion David made is a general rule I have heard over the years for glow engines. The only thing different here would be that cell count will be a critical factor too. A hand full of props and your watt meter will be the best way to tell I'm thinking. |
| 01-01-2015 02:41 PM | |
| davidmc36 |
Re: Prop change formula? Try either one diameter smaller or one pitch smaller. Just approximation but watt-meter checked you will see for sure. Has worked for me fine with several planes and they fly just fine. I usually check static thrust with fish scale too. |
| 01-01-2015 02:34 PM | |
| Singleminded |
Prop change formula? I have an Maxford Antonov AN-2 which I will be putting together this winter! The reviewer recommended prop is a four blade 10X6 , which reportedly over works the motor at anything over half throttle! I will be using an Eflite 25, which recommends a 2 blade prop in the range of 11X8 to 14X7. So, I want to re-prop the plane with a three blade....is there a simple conversion formula that will get me going in the right direction? I will put a watt meter on when setting up the plane before maidening...! Thanks in advance! Gord |
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