Years ago when I assisted taking the wings off a Savannah Bingo that hit treetops on take-off and crashed had heaps of plastic 2 litre milk bottles (empty of course) in the wings in case of a water ditching.
Lord Mounts Part No. CB220113 from Flexible Drive are the same size and used over here; I am told by another Skyranger owner in Australia. However I purchase from the manufacturer.
Hearing that an instructor is involved it's interesting that he has not provided advice and connection to an engine service person. Seems the instructor is leaving it up to the owner to sort the engine issue and is prepared to run a time expired engine with unknown maintenance history. A very good instructor would not do such in my experience as they would ensure the aircraft is airworthy and if asked provide advice on required work before operation of the aircraft.
Best to phone RAA with aircraft details and they will advise if required for its category and send the documents and the form to be completed by an L2, annual requirement re engine condition report etc. (I have done a couple.)
If your not solo; I would not be doing high speed taxi runs as you will be in the air before you know it. Wal is great to talk to; a full carb rebuild by him is a good option to set up for trouble free operations into the future; especially if it has not been done for a while and the needle, o rings etc and worn a perished. I'll PM my contact should you wish to call. Cheers.
Give Floods a call and they may be able to solve the issue and comment of fast throttle movements. The POH for the Gazelle will state throttle operation method recommended on take off and other situations. How many hours have you done with this engine or other 912 Rotax?
Are you moving from idle to full throttle over a four second period? The Rotax does not like fast throttle (like it sounds when you refer to "stab the throttle quickly") which is not correct application of throttle according to Rotax.
Worth dropping off the carb bowls and check closely to see if any slithers of fuel hose is present (you said fuel lines replaced) while off check the floats (type and weights). Next I would do a mechanical balance as per the maintenance manual. Then watch the movement of the throttle arms through the travel. Then run engine up again; if vibration still present and same and when in the vibration rpm range pull the carb heat and note what occurs. Cheers and I have some other checks but do these first.
For sale is a warp drive hub (536.3 TTIS) with Bolly blades (68" diameter, 341.1 hrs) fitted by LAME. $1,200 (was asking $1,500). From Nynja ‘Spirit of Kittyhawk’ which its owner changed up to a DUC propeller to increase speed. Includes the back plate, prop bolts and spinner. All undamaged.
Best that you read the moments on the aircrafts w&b sheet; it will show the info about the seats and the fuel tank behind and the effects of differing mass weight at those positions. It's important to know. Cheers.
Probably depends on the type of plastic, performance based no issue with what you have. Also the Savannah wing tanks as an example are plastic, also performance based no issues. Must be ok.
This leads to something I have been saying on and off for a while. When traffic is selected, and it stops (eg lose service etc) it needs to so on the display clearly. Even a large x that does not hamper the display information. On occasions my traffic stops receiving and I think the sky around in clear. I've had GPS units where when lat and long is out an x displays in the window. Same would be nice on ozrunways with an x through the traffic box top right of screen.
Agree, the wreckage pieces will have dents, gouges, scratches, etc that will be identified as in air origins rather than impact with the ground. The investigation experts will gain such evidence.
I have for sale a balance master for propellers fitted to Rotax 912 engines. In as new condition no longer required as now use a dyna vibe dynamic balancer on my prop.
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