Joe,

That was true of the early ABN version, I'm not sure it's true of the REVLITE version. My Big Mig CL versions came with a muffler that has a pressure nipple. If yours did not, a prop that allows good venturi velocity should help. NORVELs have a large intake for power so they must be allowed to rev-up to maintain fuel draw.

George

Joe, you will definitely get better runs with muffler pressure on this engine than trying to run it without any pressure. Should be a good match for your clown. Sometimes those tank mounts are long enough to throw off the cg, on my Baby flite streak i had to add tail weight. Also there should be a diagram with the tank on how to fix the pickup for c/l or sometimes Norvel included a different pickup tube. Good luck, let us know how it does.

       Last weekend, I tried to run a new Norvel AME on a Baby Flite Streak. Well , I won't sugarcoat it for you it wouldn't work. The second I let the plane go, it would almost stall. Then the run was all over the map going lean then rich and back again. I put the engine on bladder and problem solved. I was wondering if the choke area could be shrunk down with some tubing. If the screen was removed I was going to try and find  tubing to choke it down. I was also going to try another option. I was going to take a broken APC prop, cut it apart as to only have the hub. I was going to drill the prop hole out then tap the hole  to 1/4-32 which is what I believe the Tee Dee venturi is. Then cut sand shape the hub to fit into the case opening and hold it in with a bit of JB weld. I was hoping I could then screw in the Cox Tee Dee set up with a Kirn needle and this would solve the problem. I do have currently one AME ABN engine running backplate pressure to the uniflow vent on the tank and this works well. You should try to email klondike17@juno.com I think his name is Andrew. Ask for a pressure type backplate as this would be the simplest solution. He now handles the line of the former Norvel's now known as N/V engines. Ken

      Last weekend, I tried to run a new Norvel AME on a Baby Flite Streak. Well , I won't sugarcoat it for you it wouldn't work. The second I let the plane go, it would almost stall. Then the run was all over the map going lean then rich and back again. I put the engine on bladder and problem solved. I was wondering if the choke area could be shrunk down with some tubing. If the screen was removed I was going to try and find  tubing to choke it down. I was also going to try another option. I was going to take a broken APC prop, cut it apart as to only have the hub. I was going to drill the prop hole out then tap the hole  to 1/4-32 which is what I believe the Tee Dee venturi is. Then cut sand shape the hub to fit into the case opening and hold it in with a bit of JB weld. I was hoping I could then screw in the Cox Tee Dee set up with a Kirn needle and this would solve the problem. I do have currently one AME ABN engine running backplate pressure to the uniflow vent on the tank and this works well. You should try to email klondike17@juno.com I think his name is Andrew. Ask for a pressure type backplate as this would be the simplest solution. He now handles the line of the former Norvel's now known as N/V engines. Ken

Thanks, Ken