New to electrics...could use some feedback
 

Hey yall...Getting back into the hobby after a 7 year break. With all advancements in electric flight i decided to go that route with a new build so my many years of glow experience is out the door...lol. Im converting a Hobbistar 60 to electric for a 're-trainer'. Taking a little longer to get together since im converting it to electric and also a tail dragger, almost complete though. What i have so far consists of:

eflight Power 60 motor
eflight 80A esc
Venom 6S 5000mah LiPo

Figuring ill end up in the 8lb range, i hope this setup will work well. As far as prop goes, the LHS had a 15/6 so ill use that as a starting point. Any suggestions on prop size? What about flight time and performance...what should i expect? Thanks so much in advance for any feedback you provide.

RE: New to electrics...could use some feedback
 

The only problem I see is the prop. A 15/6 on 6S may be a bit much. Watch the amp draw.
Walt

RE: New to electrics...could use some feedback
 

What would be a better prop option as a starting point?

RE: New to electrics...could use some feedback
 

Here is a DriveCalc projection... this 14x10 or even the 15x8 seem to keep the motor in its region of maximum efficiency. The E-flite specs say 40A continuous/60A burst... it just depends on how far to want to push it... it should be okay at 1000W... but I'm not sure I'd venture up to 1425W!

RE: New to electrics...could use some feedback
 

thanks so much :)

RE: New to electrics...could use some feedback
 

<div>EVERYTHING YOU WANTED TO KNOW ABOUT ELECTRIC POWERED FLIGHT</div><div>http://www.rcuniverse.com/forum/m_7100376/tm.htm

Check the chapter on wattmeters
</div>

RE: New to electrics...could use some feedback
 

Yep you are not going to be using the motor's full potential with the 15 x6, with that esc and pack.

I ran that motor with a 60 amp esc, and 6S3700 in my Hanger9 Camel, and NitroPlanes DR1, both spinning 15x8's, my Hangar9 P-40 with a 14x13x3

And I think the same bird as you are converting, spinning a 15x10x3. Same tail dragger conversion. And it flew with authority.
Around 46 amps, 136 oz/11.33 POUNDS of thrust and right around 50-55 mph. Actually was a really sweet flyer, both as a trainer and some pretty serious acrobatics. Nothing like more then 1:1 thrust.

Here's a pic of it with it's new owner, whom I built it for.

RE: New to electrics...could use some feedback
 

AEAJR

Thank you !!! This looks like just what I have been looking for. I am a long time gas and glo R/c pilot wanting to try electric. I have found that if you talk to 5 different people you will get 6 or 7 different answers. Looks like I have some reading to do.


thanks again
rv9-a

RE: New to electrics...could use some feedback
 

You always have to consider your source.

We all know what we know based on:
* What we have done
* What others have told us
* What we have read

So a glider/electric pilot (me) has a different base of knowledge than a glow based pylon racer or a 3D parkflyer pilot. Our experience is different, our goals are different and therefore our answers may be different.

For example i may feel 75-90watts/pound for a sport plane is fine, but that pylon racer may feel that that is severely underpowered. The pylon racer may prefernarrow high speed props for best top end,but the 3Dpilot is probably more interested in wider slower set-ups for maximum thrust.

So if you ask us what we think is a good set-up we will all tell you, but our answers may differ by quite a lot.

RE: New to electrics...could use some feedback
 

I too would recommend a watt meter.They take all the guess work out of amp draw related to props and prop changes.Lots of good advice here for the op for sure.