Jump to content


  • Content Count

  • Joined

  • Last visited

  • Days Won


1 Follower

About M61A1

  • Rank
    Well-known member


  • Aircraft
    Fixed wing
  • Location
    Darling Downs
  • Country

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Do you think it possible that the balance tube might be a contributing factor? Balancing the the negative pressure in the manifolds despite the fact that one can only use a portion of the other.
  2. My best explanation would be that when you put more fuel in than the engine Can use, there is more unburned fuel leaving through the Exhaust.
  3. It has been good to see that the responses are generally the same as the path I took. While working on it, I knocked the exhaust pipe with my knee and thought I heard a faint rattle. I gave it a thump on the side and sure enough something was adrift inside the muffler can. I cut the end off and found a largish piece of baffle had been floating about in there. The design of the can allowed the piece to partially block the outlet and likely one side of the can at times depending on where it got stuck. I was likely the rattle heard at idle was the loose piece, but it wasn't audible from
  4. Power certainly did drop, fortunately being a hot day there was plenty of lift about. I had fresh 98 in it, and then put some fresh 100LL in it. Filter is clean. Float bowls clean and correct levels. CHT was normal for the weather, EGTs may have indicated differently if they were fitted, but this installation has none. I didn't even think of that, but probably because there were no weird noises when turning by hand. I have experienced this also, but only at idle. Float bowls were checked immediately after shutdown when the abrupt power drop occurred on ground run.
  5. It has pod filters which are in good condition and it is in the high 20's low 30's in temp with about 25% humidity.
  6. I will add at this time an acquaintance came over when I was faultfinding and leaned on the prop. He then started moving the prop back and forwards listening to the tiny amount of backlash in the gears and commented that he could hear that when it was idling. It's not the problem but it's a clue.
  7. Mags checked out serv. Wiring all good. Intermittent problem still there
  8. Both checked, just to rule out. Exactly what I thought.....Pod filters fitted. even swapped them with another set. After checking plugs it was noted that both sets on the left hand side were sooty while the ones on the right were normal. So float levels were checked, needles and seats tested and floats replaced with a spare set and float bowl vents and galleries were cleaned with compressed air. Also slide diaphragms and needles were inspected with no faults found as part of troubleshooting. All with no result. Then during a ground run there was an abrupt power r
  9. How about an actual problem? I had this issue a couple of weeks ago. The aircraft has a Rotax 912 with standard Bings with vent hoses as per Rotax instruction. The installation is pretty normal. A single throttle cable from the dual throttle linkage to a splitter which goes to each carb. The installation has an Air/Fuel Ratio gauge fitted. A let over from some previous testing. The exhaust is not standard Rotax but appears similar in design. Engine mounts are standard for the aircraft design, which has a bed mount. The whole installation has been f
  10. Oakey says PPR on ERSA. When I phoned ops to get permission, the standard answer is "You can't". They gave up some of their airspace when Wellcamp opened. Now the are very protective of what they have left. At least the deactivate on weekends and usually for 2 hours late afternoon.
  11. Pretty sure you don't want to know what it made me think....😵
  12. Why.....It's the simplest and most logical reason for indicated speed not matching ground speed. You said it a simple solution.
  13. This could cause me some issues.....I frequently use my prop as a brake.😱
  • Create New...