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View Full Version : PJS 800 or 1000 4 22oz. plane


jobu
11-25-2005, 03:44 AM
I have a Miracle EPP 900 from HL and wanted to put a pjs motor on it.

I have had two pjs motors... 1 800 and 1 1200. the 800 is an awesome motor on a potensky eagle. it has been bulletproof and have had no problems even after numerous crashes.

The 1200 is on a mini funtana and has been a bit finicky because it really needs a bigger battery. Right now on TP 2100 3s it will bearly give me full throttle before the esc cuts it out. With 10x47 prop. 9" prop are no problem but not really beefy.

I would like to get another 800 but I had a hard time keeping a hover on the Eagle (11x4.7)and since the Miracle is a similar weight and frame...I of course wanted more hp!

If I am running TP 2100 and also PQ Twenty 1800 do you think a PJS 900 or 1000 will work. Or will I have similar problems as 1200?

Anyone with info welcome:)

thanks
joe

Matt Kirsch
11-27-2005, 03:01 PM
A bigger motor does not necessarily mean more power. To get more power, you need to push more Volts and/or Amps through the motor. The only reason you would need a bigger motor is because the motor you currently have is maxxed out and can't take any additional power.

Unfortunately, I have no way of telling where you're at with the PJS800 so we could determine if the motor could take any more power...

With the 1200, it does indeed sound like your limitation is with the battery. According to the specs on http://www.czpjsza-motory.cz/, the 1200 can take up to 40 Amps, but the TP2100 won't do 20 Amps for more than a few seconds at a time.

Part of your hover issue with the Eagle is that you have too much battery weight. You may not think the TP2100 is "that heavy," but one or two ounces makes a heck of a difference on a plane that size.

Similar size and weight, I'd stick with the PJS800 and try a smaller battery to improve 3D performance.

jobu
11-30-2005, 03:36 AM
Thank you Matt,
I appreciate your time...
I am thinking the PJS 800 too, why fight success. I have also been looking at the AXI 2814/12. Most people seem to like them.

I loved my old Himaxx motors but not the gearbox problems.

I guess I am basically looking for the best suited motor for the batteries I have now (3)TP2100,(2)TP1320,(1)PQ1800 and a bunch of old Kokams.

Thanks again,
Joe

Matt Kirsch
12-01-2005, 05:34 PM
jobu,

If you're looking at the AXi, go with the 2808/24. It's been successfully used in many a MiniFuntana, which generally come out in the 22-26oz range. Why drag around extra weight when you don't have to?

jobu
12-07-2005, 02:34 AM
Done, 2808/24.
Plus 2 new TP2100s. And a Miracle900EPP.
Should Boogie!
Thanks again,
Joe