HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Feb 11, 2012, 01:00 PM
Team JetiUSA
pvogel's Avatar
Santa Clara, CA
Joined Nov 2008
1,029 Posts
Quote:
Originally Posted by cmala View Post
Yeah, 15 lb 3D plane. 3000 watts would be 200 watts/lb.

I'm thinking it should be enough.

I'm just worried that the motrofly would be too small.

They are liking the Power 160 in the EF Extra 13 lbs on 10S . Looks to be a great combo for that plane. No option for 12S though on that motor AFAIK
Yeah, E-flite doesn't do the same breadth of kV on their motors as many other brands do. They are trying to keep things simple with each motor providing a very similar amount of power on a given prop as a glow motor would on the same diameter and pitch. Hence a Power 160 spinning a 20" prop would deliver similar power to a 1.6cu in (26cc) glow engine. Which is generally a 4-stroke at that size.

Peter+
pvogel is offline Find More Posts by pvogel
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 11, 2012, 01:12 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
16,469 Posts
Quote:
Originally Posted by Eagle34 View Post
Motrolfly 5320-300 on 8S ~5000mAh spinning a 20x10 Xoar will be right about 3000W. Pretty sure this is what Losi said he was running in a 71" Slick. BTW that is a 495gr motor.
A 20x10 would pull about 3300 to 3500watts I am getting 2960watts out of a 19x8 with that motor
Quote:
Originally Posted by Eagle34 View Post
True, but he was also asking if 3000W was roughly equal to a 30cc.
My 2960watts is WAY more powerfull than a 30CC
losifanatic is offline Find More Posts by losifanatic
Reply With Quote
Old Feb 11, 2012, 01:21 PM
customstandoffs
cmala's Avatar
USA, AL, Madison
Joined Dec 2007
8,547 Posts
Quote:
Originally Posted by losifanatic View Post
A 20x10 would pull about 3300 to 3500watts I am getting 2960watts out of a 19x8 with that motor


My 2960watts is WAY more powerfull than a 30CC
So you are running that motor at around 100 Amps?
cmala is offline Find More Posts by cmala
Reply With Quote
Old Feb 11, 2012, 01:24 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
16,469 Posts
Yeah some where around that
losifanatic is offline Find More Posts by losifanatic
Reply With Quote
Old Feb 11, 2012, 01:26 PM
What?!? I didn't do that!
gremlin's Avatar
Orchard Park, NY
Joined Dec 2002
267 Posts
Quote:
Originally Posted by aronph View Post
so does anybody prefab skis for a 50cc plane?.....or am I gonna hafta make them myself?
Maiden Model Products has a nice set of aluminum skis:
http://www.maidenusammp.com/prod03.htm
gremlin is offline Find More Posts by gremlin
Reply With Quote
Old Feb 11, 2012, 01:29 PM
customstandoffs
cmala's Avatar
USA, AL, Madison
Joined Dec 2007
8,547 Posts
The power 160 is a 245kv motor. Not as high as the motrofly but higher than the Hackers I was looking at but It's limited to 10S.

I don't know how eflite rates their motors though and I'm assuming that Hacker still under rates theirs but I don't know that for sure either.
cmala is offline Find More Posts by cmala
Reply With Quote
Old Feb 11, 2012, 01:49 PM
TEAM HILLBILLY
aronph's Avatar
Groveport, OH...USA
Joined Nov 2010
10,194 Posts
Quote:
Originally Posted by gremlin View Post
Maiden Model Products has a nice set of aluminum skis:
http://www.maidenusammp.com/prod03.htm
thanks
aronph is offline Find More Posts by aronph
Reply With Quote
Old Feb 11, 2012, 01:49 PM
customstandoffs
cmala's Avatar
USA, AL, Madison
Joined Dec 2007
8,547 Posts
Oh my gosh, those Q series motors are like $500
cmala is offline Find More Posts by cmala
Reply With Quote
Old Feb 11, 2012, 01:52 PM
TEAM HILLBILLY
Eagle34's Avatar
Pass Christian, MS
Joined Jan 2010
2,366 Posts
Quote:
Originally Posted by losifanatic View Post
A 20x10 would pull about 3300 to 3500watts I am getting 2960watts out of a 19x8 with that motor


My 2960watts is WAY more powerfull than a 30CC
Once again I stand corrected. When I typed that I was thinking that you used a 19 inch prop. I remember you saying that you had moar powar than a 30cc, but since I have run neither I didn't want to go there.
Eagle34 is offline Find More Posts by Eagle34
Reply With Quote
Old Feb 11, 2012, 02:00 PM
Irg
ol' yellow eyes is back
Irg's Avatar
United States, NY, Alfred
Joined Apr 2009
7,707 Posts
Quote:
Originally Posted by cmala View Post
Oh my gosh, those Q series motors are like $500
some are closer to 6.....
Irg is offline Find More Posts by Irg
Reply With Quote
Old Feb 11, 2012, 02:23 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
28,138 Posts
Quote:
Originally Posted by heritageflyer View Post
Ok, what if you want to run Two 6S 5000's in an 89 Slick as 12S?
That's what most people do... Peter and I are both running Q80-8M motors, on 12S. I have not yet run a watt/amp check (other people had, so, I wasn't particularly worried about it)...but if I remember correctly, Peter was drawing about 126 amps, and getting about 5500 watts, using Gens Ace 6S 40C 5300mAH packs.

SteveT
SteveT. is online now Find More Posts by SteveT.
RCG Plus Member
Latest blog entry: My hangar...
Reply With Quote
Old Feb 11, 2012, 02:23 PM
customstandoffs
cmala's Avatar
USA, AL, Madison
Joined Dec 2007
8,547 Posts
Ok, adding up the weights for a DLE-30, DLE-55 or 10S I'm getting some numbers that I didn't really expect

Electric, Using a Power 160, CCHV120, Zippy 5S-5000packs, adding up motor, esc, bec, flight packs, I get 74.15 oz
DLE-30 adding up motor, ignition, muffler, 10oz of fuel, 2S-3000 rx pack, bec(not adding fuel tank or tubing) I get 56.53 oz
DLE-55, same components as above with 20oz fuel I get 83.46 oz.

So a gasoline system is usually lighter than electric system?

Unless I'm missing some things here
I didn't include an ignition pack for the gas or an IBEF if I went that way instead
cmala is offline Find More Posts by cmala
Last edited by cmala; Feb 11, 2012 at 02:37 PM.
Reply With Quote
Old Feb 11, 2012, 02:53 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
28,138 Posts
Quote:
Originally Posted by cmala View Post
Oh my gosh, those Q series motors are like $500
Yes, unfortunately they are....

It's somewhat funny that I used to talk to a couple of the "pattern guys" at the field that would be running Plettenberg motors that cost $500.00 (plus) and I would think to myself..... "no way would I spend $500.00 on a motor"....yet I did for my Slick....of course my wife doesn't know how much I spent on it, or the plane.... She asked one day....and I just told her... "You really don't want to know"!!

Quote:
Originally Posted by cmala View Post
Ok, adding up the weights for a DLE-30, DLE-55 or 10S I'm getting some numbers that I didn't really expect

Electric, Using a Power 160, CCHV120, Zippy 5S-5000packs, adding up motor, esc, bec, flight packs, I get 74.15 oz
DLE-30 adding up motor, ignition, muffler, 10oz of fuel, 2S-3000 rx pack, bec(not adding fuel tank or tubing) I get 56.53 oz
DLE-55, same components as above with 20oz fuel I get 83.46 oz.

So a gasoline system is usually lighter than electric system?

Unless I'm missing some things here
I didn't include an ignition pack for the gas or an IBEF if I went that way instead
The smaller gas setups are lighter, but do not have the power of the electric systems.
The larger gas setups weigh more, but again do not have the power of the electric systems. (egads....had to edit this... I can't believe I spelled "weigh".. "way".... )

The gas setups have the advantage of longer flight times and smoke if you want it (not just by accident), but have the disadvantage of not being able to be stored in the house, some clean-up do to some fuel/smoke residue (though not as bad as nitro powered planes), and also storage and transportation of flammable fuel (though yes Lipo's are flammable too)...

SteveT
SteveT. is online now Find More Posts by SteveT.
RCG Plus Member
Last edited by SteveT.; Feb 11, 2012 at 03:40 PM.
Reply With Quote
Old Feb 11, 2012, 03:38 PM
Perfect 3pt inverted landing!
teookie's Avatar
USA, AL, Huntsville
Joined Oct 2008
3,089 Posts
Cmala I see your still entertaining the gas option. The longer flight times sure are nice arent they.
teookie is offline Find More Posts by teookie
Reply With Quote
Old Feb 11, 2012, 03:40 PM
Perfect 3pt inverted landing!
teookie's Avatar
USA, AL, Huntsville
Joined Oct 2008
3,089 Posts
Quote:
Originally Posted by cmala View Post
Ok, adding up the weights for a DLE-30, DLE-55 or 10S I'm getting some numbers that I didn't really expect

Electric, Using a Power 160, CCHV120, Zippy 5S-5000packs, adding up motor, esc, bec, flight packs, I get 74.15 oz
DLE-30 adding up motor, ignition, muffler, 10oz of fuel, 2S-3000 rx pack, bec(not adding fuel tank or tubing) I get 56.53 oz
DLE-55, same components as above with 20oz fuel I get 83.46 oz.

So a gasoline system is usually lighter than electric system?

Unless I'm missing some things here
I didn't include an ignition pack for the gas or an IBEF if I went that way instead
Don't forget to talley up the weight of a throttle servo. (I always forget that one myself when comparing electric to gas)
teookie is offline Find More Posts by teookie
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion You are addicted to flying when.... postalflyer72 Electric Plane Talk 34 Jul 17, 2011 12:12 AM
Video Angelo Lomelí flying 3D antics Jorge Fernandez Electric Plane Talk 0 Sep 30, 2006 03:22 PM
Tiger Moth antics - flying inverted w/video SnoJetter Parkflyers 49 Sep 16, 2003 08:25 PM
Help! Getting addicted to Park Flying fly4fun Parkflyers 11 Feb 16, 2002 11:58 AM
You know when your addicted to Slow Flying when..... Gman Parkflyers 51 Aug 05, 2001 04:19 AM