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1/10th Scale Westcraft B-17G Electric Conversion

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  • #41
    Originally posted by Hardway View Post
    Did a test stand motor run... Eflite Power 60. 8mm prop shaft adapter. Master Airscrew 13x8 (3) blade. 10 gauge wire all around. EC-5 connectors. Admiral 5000 mAh 6s. 44.97 amps, 1007 watts, with 9270 RPM full throttle... CC 100 ESC... What do you guys think??
    What's the C ratting on the 5000 6's?

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    • #42
      A 14" prop would be closer to scale (11' 7" full scale dia down to 1/10 would be 13.8"). The amp draw is pretty low for a Power 60. If you've got the clearance, even the MAS 15x7 might be a good choice. They come in tractor and pusher so counter rotating would be possible.

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      • #43
        Going larger than scale prop diameter tends to create clearance issues. Scraping prop blades against the ground or having props interfere with each other.

        "Too small" of a prop on an electric motor is never a problem to the motor.

        The Power 60 can turn some pretty large props, but you don't have to.

        FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.

        current planes from 1/2 oz to 22 lbs

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        • #44
          Thank you all for the input... Clearance is THE issue. I bought 14x7 for a test. It just barely clears the fuse, but it is so much closer to scale... If they make a 13x10 somewhere, please let me know!! I will buy them right now!!! LOL Thank you all for the inputs... Racing the clock, but very excited!!! Jerry

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          • #45
            Originally posted by Hardway View Post
            Did a test stand motor run... Eflite Power 60. 8mm prop shaft adapter. Master Airscrew 13x8 (3) blade. 10 gauge wire all around. EC-5 connectors. Admiral 5000 mAh 6s. 44.97 amps, 1007 watts, with 9270 RPM full throttle... CC 100 ESC... What do you guys think??
            Have to revise the data. I was doing it from memory... LOL 49.8 amps and 1103 full throttle... But there is an almost two feet of ten (10) gauge extension to the outboard nacelles... Resistance!! :Sweating:

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            • #46
              How many cycles do your batteries have on them?

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              • #47
                About 6 cycles for the one I used in testing...

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                • #48
                  My other 5000's have been used in the CZ Cub and the A-10, so we are at 20ish cycles on them...

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                  • #49
                    Perfect

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                    • #50
                      Thank you all for the input!!!!! Find me some 13x10 three blades!!! LOL LOL Love you guys!!!!!!!!!!!!! ;)

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                      • #51
                        Master airscrew has 13-8 or 13-12 three blade.

                        13x12 - 3-Blade Propellers for Model R/C Airplanes FB - factory balanced propeller - for more information click here 3 blade model airplane propellers specially developed for the most demanding hobby professionals. Great performance and scale look both for electric motors and glow engines. Carefully crafted from Glass
                        AMA 424553

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                        • #52
                          Originally posted by RRHandy View Post
                          Master airscrew has 13-8 or 13-12 three blade.

                          https://www.masterairscrew.com/colle...3x12-propeller
                          I was just on their site searching last week.... Found the 13x8 but not the 13x12.... Thank you , thank you!!!! I appreciate the help of my experienced brothers!!! Thanks!!!:Cool::P:)LOL

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                          • #53
                            wow I never knew they had a 13x12. Nice

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                            • #54
                              On order!! 4 normal, 4 reverse..... :P

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                              • #55
                                Awesomeness!:Cool:

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                                • #56
                                  Originally posted by JFandL View Post

                                  What's the C ratting on the 5000 6's?
                                  They are the Admiral 5000 mAh 6s from Motion. They are rated at 50C. Sorry I missed your question.

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                                  • #57
                                    Originally posted by Hardway View Post

                                    They are the Admiral 5000 mAh 6s from Motion. They are rated at 50C. Sorry I missed your question.
                                    Very good C ratting for your set up.

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                                    • #58
                                      Originally posted by fhhuber View Post
                                      What props you planning to use with the Power 60s?
                                      Now that they are located, 13x12 Master Airscrew standard and pushers....

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                                      • #59
                                        Originally posted by Ole-Timer View Post
                                        From everything stated, your getting there but it seems like your under proping the motors. I would expect a bit higher amp draw at WoT. After test flying my CZ T-28 with the 500Kv Power 60 that comes stock, I switched to an MA 16x10 Beechwood two blade prop. I’m right around 13lbs on that airframe and it rips with lots of extra power. I use a 6s 8000mAh battery and come in at 80Amp at WoT.

                                        Do do you have any way to test how many pounds of force your developing on the 13x8’s...?
                                        I am going to make a rig using a digital fish scale and see what we get for thrust... Will advise when that is done. It will be this week for sure!

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                                        • #60
                                          OK.... I think I am caught up on answering questions.... Going back to bed for an hour or two. Then on to soldering some more motor leads and other fun stuff... :P Have a great day everyone!

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