About 1000m useable and about 1200agl on average, depending on amount of
headwind. No poling allowed!!
Dave
________________________________
From: Dave Long & Cath Lincoln <cathd...@internode.on.net>
To: Discussion of issues relating to Soaring in Australia.
<aus-soaring@lists.internode.on.net>
Sent: Thu, 26 November, 2009 10:10:56 AM
Subject: Re: [Aus-soaring] Reflex car launching
What is your strip length, and what sort of altitudes do you
get?
Dave Long
From:aus-soaring-boun...@lists.internode.on.net
[mailto:aus-soaring-boun...@lists.internode.on.net] On Behalf Of Dave
Donald
Sent: Wednesday, 25 November 2009 10:12 AM
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Reflex car launching
At Boonah we use an Auto-tow system with a 2-to-1 reduction
and rope. The rope goes from the glider, around a fixed pulley (fixed in the
ground but spins), under the F250 which has a pulley mounted horizontally and
then back to a fixed point (the bottom of the fixed pulley) and attached by a
shackle that can rotate. The launch vehicle is an F250 v8 that does the launch
effortlessly. The rope is 10mm poly and absorbs any surges/thermals and
provides a very smooth launch. The good thing about this system is that the
launch vehicle actually heads towards the glider (from the other end of the
strip) as part of the launch. The glider is always visible during the launch.
When the glider releases the launch vehicle continues on and lays the rope at
the launch point for the next launch. The impact on the surface of the strip
(grass)
due to the rope is minimal as are the sand tyres on the F250. While not as
strictly 'reflex' launching as requested, it is still a very useful way of
getting aircraft in the air (for $8).
Regards,
Dave
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