I'm hoping the vast knowledge on this forum will be able to help me figure out a climb problem I seem to be having.
First a little history. I have a 6a with an 0320 (H2AD). I purchased the plane flying and at the time it had the duel mag/single drive (2000 series) setup with a carb. At my first condition inspection the A&P recommended losing the 2000 series mag and finding a 3000. I priced that and decided to go with electronic ignition instead. While researching the ignition I stumbled across Tracy Crooks rotary aviation site - Real World Solutions and found out he was making an ignition / fuel injection system for Lyc / Cont now (EC3). I was familiar with Tracy as I was considering a rotary in another plane years ago. In fact, I actually put down a deposit on a system. When I decided not to go that route Tracy was perfectly willing to refund my deposit, but since he was so very helpful with answering all my questions (and there were a lot) I told him to to just keep the $. He stated he would keep it on file and if I ever wanted a unit I could apply it to that. He really is a great guy. Anyway, to make a long story short this seemed like a great way to go, and I had already paid for part of it. The system controls the mixture automatically (after it is tuned) but has a potentiometer to allow the pilot make manual changes as well. I have got the system tuned and running pretty well. My cruse speed seems to have increased a little, but my climb has plummeted. My max static RPM is 2300-2350 (used to be a solid 2350) and my RPM after rotation actually goes down to around 2200-2250 RPM and stays there through out the climb. Once I level off the rpm increases and as I said earlier my cruse speed seems to be better than it was before. I'm only able to do 600-700 ft/min at 100 kts., before I could hit 1200 ft/min at 120 kts. I suspect the timing as I have manually adjusted the mixture during climb and can very the mixture from running rough rich to running rough lean and my RPM never gets above 2250. The timing on the unit automatically advances under lighter loads and remains at base (25degrees BTDC) during higher loads (like climb). I'm thinking I may have got the base timing wrong (too retarded) and the only time I get full full advance is under lighter loads. Does this seem to make sense? Any help would be greatly appreciated.
First a little history. I have a 6a with an 0320 (H2AD). I purchased the plane flying and at the time it had the duel mag/single drive (2000 series) setup with a carb. At my first condition inspection the A&P recommended losing the 2000 series mag and finding a 3000. I priced that and decided to go with electronic ignition instead. While researching the ignition I stumbled across Tracy Crooks rotary aviation site - Real World Solutions and found out he was making an ignition / fuel injection system for Lyc / Cont now (EC3). I was familiar with Tracy as I was considering a rotary in another plane years ago. In fact, I actually put down a deposit on a system. When I decided not to go that route Tracy was perfectly willing to refund my deposit, but since he was so very helpful with answering all my questions (and there were a lot) I told him to to just keep the $. He stated he would keep it on file and if I ever wanted a unit I could apply it to that. He really is a great guy. Anyway, to make a long story short this seemed like a great way to go, and I had already paid for part of it. The system controls the mixture automatically (after it is tuned) but has a potentiometer to allow the pilot make manual changes as well. I have got the system tuned and running pretty well. My cruse speed seems to have increased a little, but my climb has plummeted. My max static RPM is 2300-2350 (used to be a solid 2350) and my RPM after rotation actually goes down to around 2200-2250 RPM and stays there through out the climb. Once I level off the rpm increases and as I said earlier my cruse speed seems to be better than it was before. I'm only able to do 600-700 ft/min at 100 kts., before I could hit 1200 ft/min at 120 kts. I suspect the timing as I have manually adjusted the mixture during climb and can very the mixture from running rough rich to running rough lean and my RPM never gets above 2250. The timing on the unit automatically advances under lighter loads and remains at base (25degrees BTDC) during higher loads (like climb). I'm thinking I may have got the base timing wrong (too retarded) and the only time I get full full advance is under lighter loads. Does this seem to make sense? Any help would be greatly appreciated.
