Thread Tools
Oct 31, 2004, 08:27 PM
Michael K.
vol-haut's Avatar

Speed 400 Limited Motor Run Glider?


My local glider club hosts a F5J style limited motor run glider competition for 400 speed gliders. Only bushed ferite, no brushless, colbolt or modified motors allowed. Nicads or nickle hydrides up to 8 cells. I would like to join in the fun next spring but I don't know what kind of plane to build. I don't want a "trainer", I want something to really compete. Anyone have a suggestion? Any size and any number of controls are allowed. Gearbox or direct drive allowed. Motor run is 60 seconds. Flight task is 10 minutes with landing points. What are the "trick" setups to use?
Sign up now
to remove ads between posts
Nov 01, 2004, 04:09 AM
Registered User
Stan Rose's Avatar
We have a similar set of rules in the U.K. Most people use either a 1.5m or 1.8m "Simply the Best" or a 1.5m or a 1.8m "Highlight" (known as an "Omega" in other parts of the world.) Power trains for both models are usually Speed 400 4.8v and Comotec 4.5:1 gearbox turning a 12" x 8" or thereabouts on 7 x KAN 1050's or these days 7 x GP1100's. If you go for this set up you will need a ESC that can deal with about 18-20 amps. 8 cells would improve performance slightly. It always amazes me what good performance and fun can be had from these relatively small and low powered models.
Last edited by Stan Rose; Nov 01, 2004 at 04:12 AM.
Nov 01, 2004, 05:33 AM
Registered User
mihah's Avatar
Slovenian F5J 400 scene:

http://mdm.zrcalo.si/forum/viewtopic.php?t=2738
Nov 01, 2004, 07:10 AM
Registered User
polecat aero wind dancer wins hands down....poly version.
Nov 01, 2004, 07:18 AM
Registered User
Andy W's Avatar
I use my Joker (reviewed on LiftZone) for the Extreme F5J and although I'm not all that experienced, it was competitive. I had to add spoilers to the design, however.
..a
Nov 01, 2004, 07:29 AM
SEFF Contest Director
rcjunkie's Avatar
My koleos-e from Icare has served me very well. 3 years in a row I've come in either 2nd or 3rd at the NATS in 1/2A sailplane. I also have won twice with it in the F5J Extreme contests here on Ezone. The Sky Sergio is also very good.

Ernie S.
Nov 01, 2004, 07:47 AM
Registered User
Iim banking on the poly Pulsar to be a contender.

http://www.nfmodels.com/html/poly_pulsar.html
Nov 01, 2004, 08:15 AM
tender
tender's Avatar
Quote:
Originally Posted by vol-haut
My local glider club hosts a F5J style limited motor run glider competition for 400 speed gliders.........I want something to really compete. Anyone have a suggestion?
I recommend you my SENSOR model.
For details about this model you can look my web-site http://www.rivamodels.sk >>> SENSOR
Nov 01, 2004, 07:24 PM
Registered User
pocket rocket's Avatar
there seem to be 2 options

1 - Wind Dancer type about 70" span, geared, big 11-12" diameter prop.

2 - hand launch type about 60" span geared or direct drive

type 1 goes for thrust and slower speed to get a good climb

type 2 goes for higher speed with a shallow angle to get a good climb

type 1 is easier to see at altitude

type 2 disappears quicker from view

type 1 won the recent Abq ESWC, but type 2 was leading after day one

both types must be built really light for best results, really really light

older javelin launch HLGs would be candidates for type 2

use a 5v Rocket Speed 400 motor

I started flying Unlimited because Speed 400 was too difficult !!!!!!! and used too many motors

Philip
Nov 01, 2004, 08:35 PM
Registered User
Ahem... I kinda remember Lenny dominating both days with his Mirage.
Last edited by flyingdogtwo; Nov 02, 2004 at 05:27 PM.
Nov 01, 2004, 09:11 PM
Registered User
pocket rocket's Avatar
you should look at the results then old chap

Philip
Nov 02, 2004, 08:30 AM
Registered User
Where are they posted?

Did a Goggle on ESWC and got all kinds of unrelated stuff.

Sierra Gold
Nov 02, 2004, 12:24 PM
Electric Airplane Junkie
bhchan's Avatar
Quote:
Originally Posted by Stan Rose
models are usually Speed 400 4.8v and Comotec 4.5:1 gearbox turning a 12" x 8" or thereabouts on 7 x KAN 1050's or these days 7 x GP1100's. .
stan,

How many flights can you get out of that set up? I have the same set up, without cooling hole, I almost burn mt finger on the motor. I got about 20-25 flights then the motor is done. The plane is a converted 1.8m Candy.

Brian, an EAJ
Nov 02, 2004, 03:44 PM
Registered User
Stan Rose's Avatar
I have been flying mine in competitions and for fun flying for about three years now with no problems. The motor run is usually no longer than about 25 sec's. at a time and I suppose that I run the motor about three times per flight. I don't have any cooling holes. I know others that do have to replace their motors from time to time but these motors are very cheap to replace.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Limited Motor run computer program downeym Electric Sailplanes 10 Apr 19, 2005 03:26 PM
Information on Speed 400 reversed Motor Sarj Power Systems 7 Aug 22, 2003 02:17 AM
WTB: Promax Speed 400 cobalt motor tufnik Aircraft - Electric - Airplanes (FS/W) 2 May 30, 2003 12:14 PM
Wattage Speed 400 Cobalt Motor Badger B Beginner Training Area (Aircraft-Electric) 8 May 01, 2003 03:45 PM
Limited Motor Run - how limited? stuartaw High Performance 4 Mar 07, 2003 10:41 PM