Could I have the photo's as well Thanks
peter heath [email protected] ---- Dave Donald <[email protected]> wrote: > Got some at home Cath - will send to your email address tonight. Dave ________________________________ From: Catherine Conway <[email protected]> To: Discussion of issues relating to Soaring in Australia. <[email protected]> Sent: Wed, 25 November, 2009 12:02:41 PM Subject: Re: [Aus-soaring] Reflex car launching Any pics Dave? -Cath On 25/11/2009, at 9:41 AM, Dave Donald wrote: 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 > > > > ________________________________ From: "[email protected]" <[email protected]> >To: Discussion of issues relating to Soaring in Australia. ><[email protected]> >Cc: [email protected] >Sent: Wed, 25 November, 2009 8:38:59 AM >Subject: Re: [Aus-soaring] Reflex car launching > >Ron, > >I'm doing some work with synthetic helicopter long lines that have zero >stretch so there is no stored energy in case they break. > >Will ask some questions about the rope suitability. it is far better than >steel cables. > >Was looked at as an alternate for aerotow at a couple of nsw clubs. I did a >lot of work with Eric Sweet at one site using a pully system to keep the >vehicle speed down and using the mechanical advantage. > >There was some postings or pictures on a chat site, possibly this one in the >early days showing pulley systems and synthetic rope. > >Cheers > >Peter Heath __________________________________________________________________________________ Win 1 of 4 Sony home entertainment packs thanks to Yahoo!7. Enter now: http://au.docs.yahoo.com/homepageset/ _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
