Here are some cooling ideas - Factory baffles are dreadful however new ones can easily be made out of 1mm Al sheet. Note where the old ones are inadequate and then use them as templates. - Follow Macca's advice and become obsessive/compulsive about sealing air gaps with silicone and aluminium tape. - Fit some decent baffles under the barrels next time you have the heads off - the VW people have ones for 1600 motors that require only minor modification. I think the ones from limbach that Nigel can get may not require the heads to be off to fit them. - Make sure the rubber seals are making good contact with the cowl and are in good condition.
While I am at it.... check that the prop change fork contacts the prop evenly. All three of the H36's that Nigel and I did up were way out with one bearing loading up the prop plate way before the other. I suspect this as being a factor in breaking studs. cheers Rob Thompson PO Box 129, Lawson, NSW, 2783. mobile 0429 493828 ............................................. ________________________________ From: Ian Williams <[email protected]> To: [email protected] Sent: Tue, 29 December, 2009 8:26:35 AM Subject: RE: [DOG mailing list] hk36 crash Hi Ian, My view (for what it is worth) is that over the years there has been less and less practical blokes coming along, and more and more who think that high powered engineering takes place behind a computer screen. Resulting in the thought that things get fixed or sorted out by divine intervention only While not a H-36, our little Grob 109A has just blasted skywards with its Limbach L2400 engine. (it does have a H-36 designed pitch change fork though) so that should be OK for the DOG list. Actually ... the take off performance is improved significantly of course but the top end is much the same. I did spend a lot of time static balancing the Prop .... (had to load up one side of the prop hub with an astounding amount of metal to get it right) but the effect was incredible ... real smooth. Also got rid of a 2mm thrust plate run out It would seem that crappy engine baffles, real bad cooling exit design and an out of balance prop all conspired to screw the original L2000 engine before it got to 500 hrs. It had a 3rd cracked case . Maybe engineers have a bit to answer to as well..!! Best regards Ian Williams From:Ian Mc Phee [mailto:[email protected]] Sent: Monday, 28 December 2009 11:18 p.m. To: [email protected] Subject: Re: [DOG mailing list] hk36 crash It seems that JB did not listen to Lewis Zurgen (was rude to Lewis when he tried to help) the original owner of hk36 GXD and he is the one that put in the accumulator solenoid for a real reason to hold pressure in system after a long soaring flight so as to unfeather prop and thus pilot had little chance of learning and pilot did not have an understanding of Bings and throttle setting for start. I am afraid there are people out there who can pass a flight test but not really understand why they are doing a certain proceedure Another example is taxiing out with electric fuel pump OFF (which checks mechanical) and then ele pump ON just before rolling. JB just left it ON - am I too fussy or is that not done anymore? Ian M 2009/12/28 Rob Thompson <[email protected]> Ian mentions that the pilots of the crashed HK36 didn't have an understanding of some of the engine systems....Can anyone explain to me how they got a type endorsement with out knowing this? Rob PO Box 129, Lawson, NSW, 2783. mobile 0429 493828 ............................................. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.431 / Virus Database: 270.14.122/2590 - Release Date: 12/28/09 07:16:00 __________________________________________________________________________________ See what's on at the movies in your area. Find out now: http://au.movies.yahoo.com/session-times/
