HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jul 27, 2011, 02:24 AM
Registered User
Joined Nov 2008
605 Posts
Does anyone have any solid figures for level flight cruise amp or wattage?

If so, please post it with your all-up weight if you know it, (or a guess, like "overloaded", "normal", "super low calorie"), and the prop/motor combo you use, and the cruise speed @ that amp, if you have an idea ..

I've seen figures all over the place, hence the question!
nyc863 is offline Find More Posts by nyc863
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 27, 2011, 02:37 AM
Registered User
Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
28,937 Posts
13 mile level flight, 29:45 minutes, using 3300mAh of a 3S 4000mAh pack.
Works out to average 6.6A at 26.2mph. Could have flown the return leg a little slower.
No canopy and two cameras out in the airflow. Could be a lot more aerodynamic.
1220kv motor turning a 10x6 folding prop. AUW 59oz.

ian
Daemon is offline Find More Posts by Daemon
RCG Plus Member
Old Jul 27, 2011, 03:14 AM
Registered User
Joined Nov 2008
605 Posts
thanks
how do you stop your folding prop (on this pusher) from folding too far and not un-folding? did you put a spinner on it?
nyc863 is offline Find More Posts by nyc863
Reply With Quote
Old Jul 27, 2011, 03:22 AM
Registered User
Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
28,937 Posts
Just a small strip of sheet metal held down with the center nut
that reaches out to each side that holds the blades from folding past center.
There's a commercial product that does it, http://www.espritmodel.com/index.asp...D&ProdID=14295
but it's really easy to make your own.

ian
Daemon is offline Find More Posts by Daemon
RCG Plus Member
Old Jul 27, 2011, 03:25 AM
Registered User
Joined Nov 2008
605 Posts
ah thanks, got it,
and thanks for the data too!

I have an aeronaut 10x6 and the aeronaut centerpiece, and it only juuust clears the fuselage.
nyc863 is offline Find More Posts by nyc863
Reply With Quote
Old Jul 27, 2011, 03:51 AM
UAV Pilot
UndCon's Avatar
sweden
Joined May 2007
1,006 Posts
I cut a small strip of 1mm aluminium to solve that issue. Works great
UndCon is offline Find More Posts by UndCon
Reply With Quote
Old Jul 27, 2011, 06:35 AM
SILURIA / UK
Shikra's Avatar
United Kingdom
Joined Jun 2009
2,445 Posts
Quote:
Originally Posted by nyc863 View Post
Does anyone have any solid figures for level flight cruise amp or wattage?

If so, please post it with your all-up weight if you know it, (or a guess, like "overloaded", "normal", "super low calorie"), and the prop/motor combo you use, and the cruise speed @ that amp, if you have an idea ..

I've seen figures all over the place, hence the question!
Mine cruises on about 4A with a 4000mah 3s. It's a pretty light built with no extra strengthening. dx201 cam. aerodrive xp 35-30 1400 running apc 9*6e
Shikra is offline Find More Posts by Shikra
RCG Plus Member
Latest blog entry: MultiWii OSD - MWOSD NG
Reply With Quote
Old Jul 27, 2011, 09:21 AM
If it's to be, it's up to me.
subsonic's Avatar
Sydney, Australia
Joined Jan 2007
3,120 Posts
What's a good scorpion motor for the Skywalker on 4S, 9x6" prop? Not really familiar with the scorpion designations...

s
subsonic is offline Find More Posts by subsonic
Reply With Quote
Old Jul 27, 2011, 12:41 PM
Registered User
Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
28,937 Posts
Quote:
Originally Posted by subsonic View Post
What's a good scorpion motor for the Skywalker on 4S, 9x6" prop? Not really familiar with the scorpion designations...

s
All the matters is the Kv rating (rpm per volt) and max current rating. The "designation" is pretty
much irrelevant. Most folks run 1200-1400kv on 3S and 900-1000Kv on 4S, and allow for
30A (underrated motors like scorpion and Hacker) or 40A (true or optimistic rating for other motors)

ian
Daemon is offline Find More Posts by Daemon
RCG Plus Member
Old Jul 27, 2011, 01:03 PM
THEY MOSTLY COME OUT AT NIGHT
chimaera's Avatar
Kaysville, Utah
Joined Jul 2005
1,253 Posts
Quote:
Originally Posted by subsonic View Post
What's a good scorpion motor for the Skywalker on 4S, 9x6" prop? Not really familiar with the scorpion designations...

s
I'm using a Scorpion SII-3008-1220 and 3S 5000 mAh batteries. A lot of guys are using the 3014 size, but this motor has enough power to do what I need. It won't go vertical, but it is very efficient.
chimaera is offline Find More Posts by chimaera
Reply With Quote
Old Jul 27, 2011, 01:18 PM
Registered User
Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
28,937 Posts
The SII-3008-1220 is also about the lightest motor in this class (30-40A) at 95 grams.

ian
Daemon is offline Find More Posts by Daemon
RCG Plus Member
Old Jul 27, 2011, 01:22 PM
Registered User
BushmanLA's Avatar
Joined Dec 2005
1,820 Posts
I'm cruising at around 4 Amps with a 4S battery, comfortable cruise speed is about 25Mph

When you have this bird trimmed and balanced just right she really can glide.
BushmanLA is offline Find More Posts by BushmanLA
Reply With Quote
Old Jul 27, 2011, 01:27 PM
Registered User
Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
28,937 Posts
Keeping in mind 4A at 14.8V (4S nominal) is 59.2 Watts which would require 5.3A at 11.1V (3S nominal)

ian
Daemon is offline Find More Posts by Daemon
RCG Plus Member
Old Jul 27, 2011, 01:40 PM
Registered User
BushmanLA's Avatar
Joined Dec 2005
1,820 Posts
Some pics of the new nose job and camera.
BushmanLA is offline Find More Posts by BushmanLA
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question Best plane for FPV while on vacation? patricklupo FPV Aircraft 24 Nov 23, 2014 04:56 PM
Cool FPV plane rescue with an FPV truck :-) AnthonyRC FPV Aircraft 17 Feb 24, 2008 11:45 PM
For Sale Skywalker plane and a bunch of extras moody07747 Aircraft - Electric - Airplanes (FS/W) 8 Sep 19, 2006 10:34 PM
Discussion Aviator Skywalker RC plane given to me moody07747 Electric Plane Talk 46 Sep 12, 2006 12:45 PM