Hi Guys! Today I was working on the engine on the Hummelwagon. It was a stock engine that I picked at random from the pile...so now it is getting it's...
... Great news Bruce! I'd like to fly my motor some day too so I'm interested in your results. 20-25hp should be enough. I'm sure a small improvement can be...
George, Right now the prop is pitched for around 60 to 65 MPH. But it is ground adjustable, so flight testing will tell how much pitch to add. I have it set...
Steve, I will be getting 20+ HP at reasonable RPM's....its just the "+" part that is unknown just now. I normally reuse the cylinder head gaskets, but do spray...
Hi again! While working on the cylinder heads for the Hummelwagon today I had a pile of used heads on the workbench. I had several sets of rocker arms loose on...
George, The pitch works out such that 8 degree pitch blocks correspond to about 20 inches of pitch compared to a conventional prop. My best rate of climb...
I'm still struggling but when I do 75% of 24" (assuming 48"ø) I come up with a circumferential track of 56.55". If I draw a line at an angle of 8° from one...
You are calculating 75% of the radius , you need to calculate 75% of diameter which is 36 inches , the circumference is now 113 inches. David Downey...
...just plain pathetic! I know that! Thankt for the clarification. george_rf <george_rf1@...> wrote: You are calculating 75% of the radius , you need to...
Hi Guys I did get around to doing a quick and dirty valve train test today. First I did a static RPM check of the engine....2950 RPM, with indications of going...
Hey Bruce, I've been following with much interest. Have you ever tried using a tillotson HL series carb? the bore is very close to the same as the intake and...
Hello to the group.I have purchased a Hummel Bird minus engine and am looking for an engine.To Bruce H, when do you expect to fly your HB with the 032? How do...
TLK, For a stock Hummelbird airframe the 2A042 engine is a better bet. It has about 5 more HP than the smaller 4A032, and about 25 more pounds of weight....
We are an emerging grassroots organization for both Sportplane builder and Sport Pilots and Sport qualified classic factory built aircraft our goal is to make...
I'm still looking for a set of pipes and mufflers that come off the original engine setup, I know most of you guys throw them out. I need a set for my...
Hi Guys! For those of you experimenting around with the 4A032, I recently found a source for aluminum tubing bends. These would come in handy if you are...
I believe I have access to 4a032. Curious to what airframes this motor without a redrive, and with a redrive. Also what is the concenous on using an airboat as...
I am a newbie to this group and have a couple of questions about the surplus engines and their possible use for a single passenger powered parachute. I am most...
David, I'm afraid that I am not very knowledgable about PPC's. You may be correct that the high power levels and low airspeeds for cooling would be an issue....
Members: I have an engine to sell. I live in southern California and want to sell this engine. I bought it for a project, but we decided that we did not need...
We are an emerging grassroots organization for both Sportplane builder and Sport Pilots and Sport qualified classic factory built aircraft We are now 800...
you know , the HKS works out to be about 42 inch displacement. About the same as the Cushman 22 hp and also the Surplus 042. That is surprising to me. Scott...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the 4A032 group. File : /Intake...
4A032@yahoogroups.com
Dec 24, 2005 5:37 am
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Hi Guys! A couple of weeks ago I ran across some 1" diameter plumbing elbows at Lowes. They looked promising for making up an intake system for the 4A032...
I'd expect to see icing if you get the carb too far from the engine, the smaller tubing may increase the air speed through the pipe and make the icing ...
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