RELAX NIGEL as it must be the heat in SA & seasons greetings down there.
I was at Eric Weston last week and border town Keith (or was it Murray Bridge) prop was being painted. Maybe ask them. Also XOO came back few weeks ago & we fitted today. One of ours was done in Germany earlier this year & Eric was not happy so it went back to Germany and then we got a huge bill. Norm Sanders hit Hoffman with German consumer law in both English & German & invoice came to a respectable $3000 inc freight to and from Germany. That prop was perfect & I mean it. I go to gulf and back via Proserpine in early Sept and prop was perfect (but slick 4320 failed & electronic ignition saved us but that's another story ) Brian Marshall went up on 23rd Sep no issues up but on trip home it started throwing out again on return trip. This happened 12 months earlier with brian & we sent to eric & was there 3 months & had a new boss fitted. This time I point blank refused to sent it back to eric yet again and this time I spent guess 1 ½ hrs going back and forward comparing props. I then noticed the slide out had a different mark on each slide. I removed our slide and then polished the slide with 3 grades of emery paper & bingo totally fixed. For some reason ours was not going out far enough & thus slide slipping back. Why? I then discovered Brian was not waiting till the prop was all but stopped before he feathered. I hang glider on the nose until prop is real slow then SLOWLY pull prop back. Also he was pulling far too much back & no wonder he had prop issues. All I say you MUST do perfect prop changes ALWAYS & if in doubt READ THE MANUAL or check with others. Too many donkeys have not got a clue about the prop. My 20c worth Ian Mc Phee 0428847642 Box 657 Byron Bay NSW 2481 Good on you Nige! I would much rather that you posted "Merry Christmas to All and have a great Holiday Season"! So I have. The forum has been a bit quiet though so here are some questions for the Brains Trust. There is some H36 performance data that I can't seem to verify from the Manual and get mixed answers from Mr Google. I have been doing some calcs on glide range at Camden under onshore and offshore area wind conditions. We typically would climb to 6-7000' on our Air Experience Flights which puts us some distance form the airport. After 12 or 13 years of regularly flying YT and enjoying plenty of soaring in it I've come to consider that around 250fpm sink at best L:D (26:1?) was close to the mark. Others talk about 300fpm. YT is very well finished and sealed and I think that Rob and Nige may have done some wing reprofiling at the rebuild so it may well be that it is an exception. A min sink rate of maybe 200-220fpm Tom posted an HK36 polar some while back but I haven't been able to track down a polar for the H36. I'd appreciate any comments. Where is JV when you need him! Regards Laurie Hoffman ------------------------------ *From:* Nigel Baker <[email protected]> *To:* [email protected] *Cc:* Bob Jenneson <[email protected]> *Sent:* Tuesday, 22 December 2015, 23:58 *Subject:* [DOG mailing list] Bloody Hoffmann Props Hi All. I had my Prop overhauled in early 2009. It had the Studs updated to 8mm. This involved changing the studs. The stud bases which they screw into and run through the nylon bushes in the Spinner backing plate. The nylon cup sleeves that support the springs. Larger springs. And the Nylon Guide block bolted on the hub. This was not a cheap exercise. Now I look at the list and see an updated bulletin. WTF. Has anybody recently had their prop overhauled that can enlighten me. Changing the Spinner Backing plate and adding different bearings to the hub etc etc etc looks like more big expense. Any idea’s guys. See attached and look at the numbers and dates. Nige. --------------------------------------------------------------------- You are subscribed to the Dimona Owners Group mailing list. To unsubscribe, send email to: [email protected]
