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geoffreywh

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Posts posted by geoffreywh

  1. Lots of mentions of solvents attacking gelcoat....But I never saw a fibreglass fuel tank with gel coat on the inside!....Or on the outside for that matter....Gelcoat is far too prone to cracking to put it anywhere near fuel tanks.Unfortunately I never found, in my life as a bike mech, any solvent that would remove green evaporated fuel residue. I would lean toward the citrus types (Big Kev's goo remover!) and a large washable filter.....

     

     

  2. Doing a job for a nice guy. Oil leaks cause me to remove the heads and barrels. After a clean up I find one barrel worn out and way over size tolerance. The others are OK, pistons good too, Ring gaps about 3mm!...So I need one good cylinder, worse is the fact that two heads have detonation damage. It looks as though the seats could fall out. So has anybody got a cylinder and a couple of heads for a solid lifter engine?....Got to be within wear limits. 3/8" thru' bolts. Anybody? Have a look at the pics and what do you think? Maybe I'm overthinking the heads.

     

    IMG_20180405_172359.jpg.750198c6b872161bfb59425cd0e59026.jpg

     

    IMG_20180405_172537.jpg.7bf33677293a94ac35dc74187fed30a0.jpg

     

     

  3. You should be using a multigrade if the temp is that low........... I use 20w50 exxon elite aviation oil......... Must be available around your way. It comes from the U.S. It means that you are running the engine , at least on start up, on a low viscosity oil. (thin!) and it wont thicken up 'til it gets hot. And it it doesn't get hot it wont increase the viscosity...Win Win....This oil is in the workshop manual as suitable for Jabiru.....................Cheers

     

     

  4. Saw a report last night on BBC that said it had been confirmed by ATSB that the engine was functioning correct and all control cables were in place. Eyewitness and video footage reports that the aircraft had entered a 80 - 90 degree bank!...That is REALLY steep.....I was shocked. .......Plus the Aircraft owners say that the pilot did not have permission to be in that area....Poor buggers....

     

     

    • Like 1
  5. Dear Oh Dear! Where some of you blokes get your information from is quite beyond me. I believe it must come to some in dreams. RESORCINOL was bought into common use in 1943. So, according to some of our posters all the wooden aircraft from just after the war should have started to fall out of the sky ( with glue joint failure) by the mid-eighties, But no, that hasn't happened. Not at all. In the case of Jodel, none. ( I haven't researched others) And here we are almost ANOTHER fourty years later, Jodel's STILL not falling apart from glue failure? How can that be? The bloke above says "but its life could be somewhat suspect after 40+ years." .............F######G nonsense. What do you base that statement on? Intuition?

     

     

  6. RESORCINOL RP51Hsystem is recommended for interior or exterior applications where a durable, strong, waterproof wood to woodbond is required. The bond formed with

     

    RESORCINOL R15 RESIN is capable of with-standing continuous or intermittent exposure to cold or boiling water, elevated temperature, mould and fungus attack, and common organic solvents

     

    That is from the manufacturer. Yes a wooden aircraft needs to be Hanagared and Tropical climates are dodgy. BUT under those ( normal) circumstances a wood aircraft has an exceedingly long life....

     

     

    • Agree 2
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  7. 1963 That's not yesterday. ( for a wooden plane).??????????????????? what the hell does that mean? A wooden aircraft from '63 is very likely in better condition that an aluminium one of the same age. And definitely better than a composite one.

     

     

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