An old L series though Redmond! The Outback drags the Bergy around just fine. (It is right on the limits though).
Anthony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Quinn Sent: Saturday, 18 June 2005 2:14 PM To: Discussion of issues relating to Soaring in Australia. Subject: Re: [Aus-soaring] Looooong trailer registration Absolutely right - I tow glider trailers around with a Landcruiser! On the other hand there are plenty of glider pilots out there who don't have a wide choice of vehicles to use. In the past I've been known to tow a 2 seater trailer with a Subaru - I wouldn't recommend it :-( Redmond Quinn *********************************************** ----- Original Message ----- From: "Stuart & Kerri FERGUSON" <[EMAIL PROTECTED]> To: "'Discussion of issues relating to Soaring in Australia.'" <[email protected]> Sent: Friday, 17 June 2005 9:28 Subject: RE: [Aus-soaring] Looooong trailer registration > Acknowledging all the comments are valid, surly choosing a suitable tow > vehicle must also be important? > > SDF > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Quinn > Sent: Friday, 17 June 2005 9:48 PM > To: Discussion of issues relating to Soaring in Australia. > Subject: Re: [Aus-soaring] Looooong trailer registration > > Long glider trailers generally require significant draw bar load to make > them stable. Rule of thumb says 10% of trailer weight, but I know you can > generally get away with less. On a big trailer I have found that 60kg is > usually enough. On a small to medium car this will require load transfer > bars to keep appropriate weight on the front wheels. > > Unfortunately when we do a retrieve we travel one way unladen. Consequently > sufficient load is required on the draw bar to make the unladen trailer > stable. Consequently if we want the trailer stable in both conditions the > total centre of gravity of the trailer parts needs to end up over the axle > or slightly forward of it. > > Generally if the trailer is set up for stable operation unladen it is > easiest to achieve the laden condition by placing the fuse in nose first and > the wings in tip first. In many cases the wings determine the length of the > trailer box and there is some room to move the fuse fore and aft. This and > the tailplane position provide some opportunity to fine tune the laden > balance of the trailer. > > Redmond Quinn > > ************************************************************ > ----- Original Message ----- > From: "Roger Druce" <[EMAIL PROTECTED]> > To: "'Discussion of issues relating to Soaring in Australia.'" > <[email protected]> > Sent: Friday, 17 June 2005 12:10 > Subject: RE: [Aus-soaring] Looooong trailer registration > > > > Rear overhang is fundamentally bad news and the weight distribution with > the > > German two seater glider trailers having the wing roots to the front and > the > > fuselage nose to the front is bad news. Sure you get the best riggability > > that way and having regard to the trailer clamshell layout. > > > > I have just spent hours on multiple spreadsheets working out the CofGs of > > the different two seater trailer layout configurations, both bare glider, > > glider plus carrying fittings and then all that plus trailer structure and > > cladding. > > > > My money is on less riggability convenience but better trailer stability > > characteristics from a layout that gets the axles a long way back, ie wing > > roots to rear, fuselage nose to front and with auxiliary bits and pieces > > stowed within sideways opening rear door. Less tail to wag the dog. See > > the article by Nelson Funston in "Technical Soaring" July 1989. That's > what > > I am doing with my trailer design. > > > > If you can move the axles back to reduce the rear overhang without > > increasing the towbar load to an unacceptable extent then do it. You > might > > fit a carry box behind the axle and below the floor with a pull out tray > to > > relocate a significant proportion of the odds and ends stowed at the front > > of the trailer. You might think they don't weigh much but they do. It > does > > help get the CofG back. Or move the spare wheel (15 to 18 kg ie > > non-trivial) to the rear of the trailer perhaps on one side of the fin in > a > > removeable but strong tiedownable frame or box, or on the rear door > exterior > > somehow. > > > > With respect Graham don't persist with trying to justify 5.23 m overhang. > > Get on with reducing the overhang by doing things which enable you to > shift > > the axles aftwards. Yes it takes effort and/or money. However it is > really > > good value for trailer safety for the long term. > > > > Cheers > > Roger Druce > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Jason and > > Jemima Armistead > > Sent: Friday, 17 June 2005 12:03 AM > > To: Discussion of issues relating to Soaring in Australia. > > Subject: Re: [Aus-soaring] Looooong trailer registration > > > > Graham > > > > At Southern Cross GC (Camden, NSW), our DG-1000 trailer (a twin axle > Anschau > > Komet) had too much overhang, and we had to move the axle position > slightly > > to comply with the 5m ruling. The RTA inspector (Jim Stanley > > IIRC) would not budge beyond that. > > > > Thankfully we had a good mechanic who was a friend of the club and did the > > work for us at a very reasonable price. > > > > And the trailer actually seemed to be better balanced after the axle was > > moved ! > > > > Cheers > > > > Jason Armistead > > > > At 11:56 PM 16/06/2005, you wrote: > > >As John Giddy reminded me a few weeks ago, I live in the Sate with no > > >published ADR exemptions for glider trailers - NSW. I now know that > > >policy is to allow exemptions against the overhang limit under the ADRs > > >(3.7m) up to 5m, very similar to Victoria and SA rules. > > > > > >A trailer we're considering buying for a two-seater has an overhang of > > >5.23m. I'd be interested to hear from anybody who has (relatively) > > >recently successfully registered a trailer with overhang greater than > > >5m. Is it possible? Under what conditions? How did you go about it? > > > > > >Any advice would be appreciated. > > > > > >Graeme Cant > > > > > > > > >_______________________________________________ > > >Aus-soaring mailing list > > >[email protected] > > >To check or change subscription details, visit: > > >http://lists.internode.on.net/mailman/listinfo/aus-soaring > > > > > > > > _______________________________________________ > > Aus-soaring mailing list > > [email protected] > > To check or change subscription details, visit: > > http://lists.internode.on.net/mailman/listinfo/aus-soaring > > > > > > _______________________________________________ > > Aus-soaring mailing list > > [email protected] > > To check or change subscription details, visit: > > http://lists.internode.on.net/mailman/listinfo/aus-soaring > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
