stanc
Veteran
Location: Conroe, TX
| Jag72
The Logo is swinging 600mm blades and is lighter than the Ion and Stratus that are swinging 690 to 710 blades, so I would expect it to be quicker.
Stolla
A 12S set up to run 2000 HS would have to be geared differently than a 10S to run 2000 HS even with a governor. The throttle curve or straight line in this case would have to be too low on the 12S set up as compared to the 10S. I don't have a PJ, but I do use a couple of 55-10-32 Jazz controllers for 10S machines and you can reduce the throttle down quite a ways and it still will work pretty good, but that isn't the right way to go about lowering the HS. If you gear it correctly for 12S and 2000 HS you want to run, your flight times will be longer and your packs and motor will come down a lot cooler.
(10S) 555 x 37 / 10 = 2050
(12S) 555 x 44.4 / 10 = 2460
The throttle curve for the 10S would be almost 100%, where the 12S would be maybe as low as 60%. Don't really know until you tech it.
However if you run an external governor, using the same gear ratio for both 10S and 12S is possible. I use an ATG V3 on my Stratus, Ion X2s and Avro 90 that I converted to electric. I dropped in some 12S in the Avro that is geared for 10S and got more flight time than with 10S and the HS stayed the same. If you want to increase the HS, then it is just a matter of increasing the AUX channel the governor is plugged into, instead of having to change all the points in the throttle curve.
| Quote |
| However I have one question: which will give me the longest flight times 10 s 5a flat out or 12s 5a limited to lower(same) headspeed with governer. I know all factors being the same the 10 s will give longer flight times due to the higher amp per volt rating.
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This isn't true, running 12S geared right and with a governor, will draw less amps than 10S and get longer flight times. I would say your flight times would not exceed 5 minutes depending on your style of flying. Hard 3D maybe 5 minutes with 5000 packs.
All this being said, trying to achieve the right gear ratio for a direct drive set up in the Stratus is harder to do than if it were a belt drive. You would need to get to around 11.2 with 12S for 2200 HS and then dial it down a little for your 2000. A 95T and a 8T would get you 11.875:1 and 2075 HS, but you really need more head room for the governor in the PJ to work than 75 rpm. Using a 100T and a 9T would give you 11.1:1 and 2220 HS, then you would have the head room you need for the PJ.
I'm sure you will work it out and enjoy you electric Stratus.
Stan
2 x Ion X2
eStartus
eAvro90
Performance Plus Lipo Packs |
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