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TOPIC: G-Air - Eone

G-Air - Eone 1 year 7 months ago #129

Awesome! Can't wait for results!

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G-Air - Eone 1 year 6 months ago #148

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Just a small video ...
Aside from the V-Belt need to be tightened, everything works perfectly. Even at full throttle it is incredibly quiet. E-prop is absolutely the perfect propeller choice for electric paramotoring.

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CEO - G-Air
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Last Edit: by Gamba.

G-Air - Eone 1 year 6 months ago #150

too excited for words mate , congratulations on another milestone reached, have to ask quick tech question regarding the belt slipping issue, when the belt tension is increased to the point where there is no slip, will this now put extra load on the motor bearing because the front of the pulley is not supported ? .. this is not a criticism of the design more a case of possible things to consider further down the road ...

I Mention this as on my 1st idea for a e- flight system I used the ext 10mm ended motor shaft through the small pulley engaged in a bearing mounted in a bracket at the front to take some of this potential load off the motor bearings .. will post a picture later ..that is after I have watched this new video for the 10 time LOL..

GREAT STUFF BO

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G-Air - Eone 1 year 6 months ago #151

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Absolutely a valid question and a good point Calvin. It was also one of my considerations when I designed the gear. But the tension on the v-belt is not that big. In today's test I did tighten the v-belt, but not tighten the locknot enough. This resulted in a loose v-belt after a short time. How the bearings in the motor handle the load, time will tell ;-)
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G-Air - Eone 1 year 6 months ago #155

nice.. saw some straps flapping.. be careful as we have shredded a few....

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G-Air - Eone 1 year 6 months ago #157

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Yeah, saw them when I edited the video. Fortunately, they were missing 5 cm to reach the propeller :-)

BTW. Done some more testing today. The noise that came at high rpm didn't come from the v-belt. It turned out that it was the motor timing that was set too low, not a v-belt problem. Now it's running perfectly. Even after 2-3 minutes at full throttle the engine doesn't get very hot. The same applies to the ESC.
The propeller spin around 2200 rpm at full throttle. It's a bit less than I expected, but there is still a lot of trust. So I'm more than happy :-)

I have not yet measured the amp. But my intuition tells me that it consumes way less than expected.

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Last Edit: by Gamba.

G-Air - Eone 1 year 6 months ago #158

Congratulations looks very nice! Do you measure the thrust on bench or go to test flight if everything is ok (motor, esc temp, ect.)?

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G-Air - Eone 1 year 6 months ago #159

what did you set the timing to? That's a great result if they do not heat up... were you able to measure the temperature? At 2200 rpm in our tests, the eprop is consuming 230 or 240 amps at 55 volts...

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G-Air - Eone 1 year 6 months ago #160

Hi, do you have a thrust data too?

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G-Air - Eone 1 year 6 months ago #161

no, but something we are trying. Here's the data, though, from the controller
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G-Air - Eone 1 year 6 months ago #162

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Unfortunately, I don't have anything that can measure how much it pushes. But I can safely say that it's significantly more than my old Racket 120 (tuned version) 16 hp. Of course not as much as my Cors-air Black Devil 25 hp. But somewhere in between. No matter what, my best hopes are certainly fulfilled.

I have no telemetry or other fancy pansy output data abilitie on this setup. So, all measurements must be done manually. So far I've only done the rpm. The timing was originally set to 12 and is now raised to 18. One of the days I will try to raise it a bit more, just to see what happens. The principle is that you get more effect by increasing the timing. But it also uses more energy. It's a tough balance.
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Last Edit: by Gamba.

G-Air - Eone 1 year 6 months ago #163

Hi Bo, will be wiring up the big boy during this coming week and thought id ask how you got on setting up the hall sensors to get te optimum timing , from what i've picked up , its initially a guessing game if your not lucky with the 1st time you select hall to phase relationship, if Motor does not perform well ie out of synch then there are a possible 36 wire swapping combination to go through before you hit the sweet spot ... again i'm asking for info but not yet contributing the way I will once I have something to show .. :-)
add tat to I really don't want to see blue smoke syndrome and you'll understand my queries
Cheers guys

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Last Edit: by Wannabeaflyer.