Thread Tools
Old Sep 25, 2014, 09:42 PM
rdwoebke is online now
Find More Posts by rdwoebke
The Self Confuser
rdwoebke's Avatar
United States, IN, Indianapolis
Joined Feb 2004
17,625 Posts
Originally Posted by aeajr View Post
How are you measuring your launch height?
It is a combo switch/altitude logger. It's an early unit from when this concept first was invented. Apparently flicking the throttle on and off after power up disabled the switch in the early firmware version. Not having actually used it in a contest until that first contest i attended in may I didn't know that.

rdwoebke is online now Find More Posts by rdwoebke
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 26, 2014, 10:56 AM
Fly2High is offline
Find More Posts by Fly2High
Chuck 'Em and Chase 'Em
Fly2High's Avatar
United States, NY, Plainview
Joined Aug 2005
8,120 Posts
You are right Ed. Poor choice of words.

I was just curious if anyone else, had found out they were overshooting the altitude and did what Don suggested to adjust it. Not really even care if it happened in a contest or not.

Just curious if:

1. this discussion got guys to think about if their setup was in compliance
2. if they found out they were overshooting the mark
3. and if they took the time to adjust.

Fly2High is offline Find More Posts by Fly2High
Reply With Quote
Old Sep 26, 2014, 03:16 PM
GarryOgilvie is online now
Find More Posts by GarryOgilvie
Professional sink locator
United States, NC, Greenville
Joined Dec 2012
735 Posts
I use the Altis4 limiter. Don Harban has researched all of the limiters available and I took his advice when I looked to purchase a limiter. I really like the ease that it can be programed and really like the altimeter logging feature.
I have tested my limiter in three different airplanes. The first is my "Little Red Plane" With it's power combination my altitude is right around 210 to 212 meters, no matter how I launch it. In another plane my altitude is consistently between 200 to 210 meters.
With my AVA I was concerned since it will reach the cutoff in 10-12 seconds and looked like it was zooming quite a bit after the motor cut off. It can be a handful when launching. I have looked at over 50 launches and the highest altitude after 10 seconds was 219 meters, so I do not feel that I am overshooting the mark. All of my launched are within the 10% variance.
With my AVA I did reduce the diameter and pitch of the prop, it now takes about 18 seconds to hit the cutoff altitude, but it is less of a rocket when launching.
I do think that it is like Don earlier stated, it is all about the launch technique, but once the motor cuts off how much energy have you built up? Enough to zoom over 20 meters?
GarryOgilvie is online now Find More Posts by GarryOgilvie
Reply With Quote
Old Sep 26, 2014, 03:23 PM
kcaldwel is offline
Find More Posts by kcaldwel
“emancipatory catastrophism”
kcaldwel's Avatar
Joined Jan 2007
4,063 Posts
My Onyx with it's HK motor will easily zoom 20 to 25m. When I flew the British postal series last winter with their cut-off height of 175m, I left my Altis 4 set at it's usual 150m. All my launches were 170 to 174m max recorded on the Altis.

The zoom is pretty predictable on most e-gliders, so it isn't hard to compensate for. Fast gliders are likely to zoom more, regardless of their climb rate. I usually use the full 30 seconds of motor run time to explore as much sky as I can, and sometimes the glider speed can get quite high if I don't throttle back enough. The high speed gives me the biggest zoom, opposed to a high climb rate.

kcaldwel is offline Find More Posts by kcaldwel
Reply With Quote

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Aomway 10 x Zoom Camera 700 TVL Dogdude FPV Equipment 8 Dec 04, 2014 11:08 AM
Discussion Why no emphasis on zoom? Mad Mitchie 88 Aerial Photography 12 Jan 04, 2014 01:29 PM
Discussion Radio Controlled zoom lens Sony Nex5 fpvmodels Multirotor Talk 4 Dec 29, 2013 05:35 PM
Sold NTSC 10x Zoom Camera $220 BloomingtonFPV FPV Equipment (FS/W) 0 Nov 27, 2013 08:49 PM
Discussion FAI F5J , ALES and eSOARING ZOOM TOOL Painter S Electric Competition Soaring-F5J/ALES/e-Soaring 10 Oct 13, 2013 07:10 AM