very interesting bob and did not know about the LPG but did know about
Butane {nest chain up) being bubbled thru the fuel to up the octane rating
and every time the car fuel goes up in air or gets heat soaked it looses a
bit of octane ratingBob up our way all fuel is called 98 (BP shell, woolworths, Liberty) and i do know at all towns in western Qld last year (except winton and Bourketown) had 98 which really surprised me. Also you can always check fuels alchol content with fuel tester and I have not seen it in 98 YET There is a good article on jabiru web site on fuels and the pros and cons of each And nigel any chance of adding Stephen Martin to the list - [email protected] (home) as he has a dimona GCH at Moura queensland I just flew him up here yesterday as all is well -very neat plane with 1200hrs but owner averaged 3hrs over past 6 years. Ian M On 12 September 2011 10:42, bob wilson <[email protected]> wrote: > ** > Ian M. > > Some of the fuel companies previously injected liquid lpg into their fuel > where it stayed in liquid suspension at normal atmospheric pressures , as > part of their blend, and as a means of getting rid of a cheap component of > refining. > > A simple way to test how much volatiles are in a blend is to take a > sample in a jar, with a top, and put an amount in the jar, marking the level > of that fuel. > > Put the cap on and then shake vigorously. > > Remove the pressure, if any, and then look at the level. > > If there has been a high level of LPG or other highly volatile components, > the level of the fuel in the jar will have dropped. > > Reduced pressure will do the same, with a reduction in octane rating. > > Something to consider. > > Bob Wilson (GIX) > > ------------------------------ > *From:* Ian Mc Phee [mailto:[email protected]] > *Sent:* Monday, 12 September 2011 8:19 AM > *To:* [email protected]; Erich Witstock(gmail) > *Subject:* Re: [DOG mailing list] mogas avgas blends > > We always used Avgas but then 15month ago they stopped letting little > fuel trucks on deliveries of gold coast airport so ever since we are back to > 98 and we have had no problems The L2000 says min 96. if i had my choice i > would run 20% Av gas and 80% 98 as that is all the tetra ethyl lead you need > for lub - rest is not needed > > SOME only 98 especially capital city stuff can be down on octane rating > and if you go up to 5000ft and down again with that fuel it will drop > octane That fuel should never fly and sometimes gets to country > > Ian m > > > > On 11 September 2011 17:21, Rob Thompson <[email protected]>wrote: > >> I am wondering about other experiences with fuel for the limbach >> motors.o We have been running almost exclusively on 100LL avgas and >> occasionally on a 50/50 blend with 97 mogas when avgas is difficult. >> Has anyone been running mostly on high mogas blends and if so how well do >> components like exhaust valves last? >> Rob (VH-GYT) >> >> PO Box 129, >> Lawson, NSW, 2783. >> mobile 0429 493828 >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> ............................................. >> >> --- On *Thu, 8/9/11, Rob Thompson <[email protected]>* wrote: >> >> >> From: Rob Thompson <[email protected]> >> Subject: Re: [DOG mailing list] Fuel Tank >> To: [email protected] >> Received: Thursday, 8 September, 2011, 7:00 PM >> >> I was thinking about making a cardboard "mock up" tank from the plans >> then checking the fit. When all is OK then use the cardboard panels as >> templates to guillotine the aluminium sheet. >> Our fibreglass tank is a very tight fit in the back compartment. I am a >> little concerned that if the aluminium tank is also a tight fit that a very >> slight error in measurements and/or construction could be a major problem. >> >> Rob (GYT) >> >> >> >> PO Box 129, >> Lawson, NSW, 2783. >> phone 02 47592307 >> mobile 0429 493828 >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> ............................................. >> >> --- On *Wed, 7/9/11, Nigel Baker <[email protected]>* wrote: >> >> >> From: Nigel Baker <[email protected]> >> Subject: [DOG mailing list] Fuel Tank >> To: "DOGS" <[email protected]> >> Received: Wednesday, 7 September, 2011, 11:20 PM >> >> Hi All. >> This post is for those in Australia with H36 Aircraft. >> For those who have the FRP fuel tank which needs inspection every annual >> or 100hours note it expires at 3000 hours. >> I have a copy of the drawings for the alloy replacement fuel tank. >> This will require and OZ E.O. being raised for the production of the same >> and welded by a CASA certified welder. >> I have spent some time tracing over the drawings as they are old blue >> prints and working through the interpretation with German speaking engineers >> to get then to the point of being able to be used here. >> There are some tooling issues which will need to be addressed in an EO for >> an alternative to the fabrication method on the drawings. >> Thus before Rob and I go down this this path to produce 2 tanks is there >> anyone else on the list interested in cost sharing for an upgrade. >> I will happily do the change just to avoid the AD each year. >> >> Also I have had a quote from Diamond. To put things in perspective the >> quote is less than a new set of clear view panels and rails for the canopy. >> If there are enough interested I can negotiate a better price. Being >> realistic with the way the exchange rate is the price isn’t bad and if we >> can get a discount for volume it will be even better. >> >> From Diamond. >> “P/N for the tank is DV2-2811-00-00, sales price € 635,18 for one piece >> We do not have them on stock. If you are going to order them the external >> supplier has to produce them new for you.” >> >> Cheers. >> Nige. >> >> >> >
