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Search: Posts Made By: 00Dan
Forum: Traditional Aircraft Engines 04-18-2021, 07:02 PM
Replies: 33
Views: 3,950
Posted By 00Dan
Per MSA the 47-862 nozzle is the same flow rate...

Per MSA the 47-862 nozzle is the same flow rate as the 47-773. I ordered and received the 862 nozzle earlier this week, it measured to #36 ID (same as the 773).

I flew it today and performed some...
Forum: Traditional Aircraft Engines 04-12-2021, 08:36 PM
Replies: 33
Views: 3,950
Posted By 00Dan
Does anyone have experience with the nozzle PN...

Does anyone have experience with the nozzle PN 47-862 that MSA developed for the Carbon Cub with the Titan 340? Per SB-22, it is a drop in replacement for 47-773 jet that is standard in the...
Forum: Traditional Aircraft Engines 04-12-2021, 08:34 AM
Replies: 33
Views: 3,950
Posted By 00Dan
I did not measure the float height. The carb guru...

I did not measure the float height. The carb guru on the airport who did the bushing for me mentioned that he did not adjust it as it was unnecessary.

I can measure it next time I have the carb...
Forum: Traditional Aircraft Engines 04-11-2021, 08:40 PM
Replies: 33
Views: 3,950
Posted By 00Dan
I reamed my jet out from #42 to #40. I also...

I reamed my jet out from #42 to #40. I also addressed some throttle shaft play by having one of the bushings replaced - itís nice and tight now.

The two size step brought my top end fuel flow up...
Forum: Traditional Aircraft Engines 04-05-2021, 10:48 AM
Replies: 33
Views: 3,950
Posted By 00Dan
If my current jet is nominally a #42 (on paper,...

If my current jet is nominally a #42 (on paper, Iíll verify once I have it out), should I go one size at a time or jump to a #40 on first go? I have a #40 reamer if that makes it preferable to a...
Forum: Traditional Aircraft Engines 04-05-2021, 09:31 AM
Replies: 33
Views: 3,950
Posted By 00Dan
Larry Vetterman sent me some information about...

Larry Vetterman sent me some information about the 3678 series carbs from a while back. As I understand it, once sufficient airspeed is achieved ram air is pressurizing the bowl causing it to lean...
Forum: Traditional Aircraft Engines 04-04-2021, 05:40 PM
Replies: 33
Views: 3,950
Posted By 00Dan
Did some testing today. After takeoff I pitched...

Did some testing today. After takeoff I pitched down and accelerated to 2500 RPM. This resulted in 11 GPH.

At 8500í I performed a lean test. Engine was in steady cruise at full throttle, 21.1Ē and...
Forum: Traditional Aircraft Engines 04-03-2021, 10:51 AM
Replies: 33
Views: 3,950
Posted By 00Dan
I finally found the nominal diameters for these...

I finally found the nominal diameters for these two jet sizes.

The 47-773 is .1065Ē (#36 bit).
The 47-828 is .0935Ē (#42 bit).

Obviously nozzle size isnít the only variable but when my carb was...
Forum: Traditional Aircraft Engines 04-03-2021, 08:34 AM
Replies: 33
Views: 3,950
Posted By 00Dan
Next time I fly Iíll redo the EGT test and Iíll...

Next time I fly Iíll redo the EGT test and Iíll try a higher RPM. I will say the other night as I was returning to the airport at 3000í I set FT and full rich. With that I saw about 11 GPH at 2680...
Forum: Traditional Aircraft Engines 04-02-2021, 08:36 PM
Replies: 33
Views: 3,950
Posted By 00Dan
I finally got the chance to fly my plane fully...

I finally got the chance to fly my plane fully instrumented. I only flew for a little bit today since it was getting dark but I noted fuel flow and RPM in a couple full throttle conditions. It was...
Forum: Traditional Aircraft Engines 01-30-2021, 11:58 AM
Replies: 33
Views: 3,950
Posted By 00Dan
Nozzle PN

Resurrecting this thread because I have some new info.

I was going through the engine log the other day and I discovered the builder at one point swapped the nozzle in the carb. It originally had a...
Forum: Traditional Aircraft Engines 12-30-2020, 04:13 PM
Replies: 33
Views: 3,950
Posted By 00Dan
To clarify some questions Iíve been asked, some...

To clarify some questions Iíve been asked, some additional details.

The engine runs smooth and starts easily. I did some testing with airspeed which the EGT does respond to, although it rises faster...
Forum: Traditional Aircraft Engines 12-30-2020, 01:01 PM
Replies: 33
Views: 3,950
Posted By 00Dan
Correct, which leads me to believe at least #4 is...

Correct, which leads me to believe at least #4 is running sufficient rich to keep it at that temperature.
Forum: Traditional Aircraft Engines 12-30-2020, 07:43 AM
Replies: 33
Views: 3,950
Posted By 00Dan
Those numbers aren’t necessarily peak, rather...

Those numbers aren’t necessarily peak, rather it’s how far I got before the first cylinder to peak went lean enough that I could feel it. I’m not prepared to rule out one cylinder running...
Forum: Traditional Aircraft Engines 12-29-2020, 05:35 PM
Replies: 33
Views: 3,950
Posted By 00Dan
I did some testing today. At 20" MAP and...

I did some testing today. At 20" MAP and approximately 2250 RPM at 2200', I got the following results by leaning until roughness (I didn't pay attention to RPM).

#1: 53 dF EGT rise
#3: 21 dF EGT...
Forum: Traditional Aircraft Engines 12-29-2020, 11:07 AM
Replies: 33
Views: 3,950
Posted By 00Dan
Mahlon, good points on the RPM drop. I'll admit I...

Mahlon, good points on the RPM drop. I'll admit I didn't particularly consider letting the engine go further lean. I'll try this.



My ~1800 RPM runup mag drops are normal, with just less than 100...
Forum: Traditional Aircraft Engines 12-28-2020, 10:15 PM
Replies: 33
Views: 3,950
Posted By 00Dan
I have indeed, but wasn’t sure if they were...

I have indeed, but wasn’t sure if they were applicable since I have a 320 with a -4SPA rather than a 360 and a -4-5.
Forum: Traditional Aircraft Engines 12-28-2020, 09:08 PM
Replies: 33
Views: 3,950
Posted By 00Dan
I'll check the ICO rise next time I fly, but its...

I'll check the ICO rise next time I fly, but its not my primary concern since its easier to adjust than the jet.
Forum: Traditional Aircraft Engines 12-28-2020, 01:14 PM
Replies: 33
Views: 3,950
Posted By 00Dan
Poor mixture authority

Iím running an O-320-A3A with an MA-4SPA 10-3678-32 carb. The engine runs smooth (except below 750 rpm; I attribute that to the wood prop). I canít help but feel I am running lean due to the mixture...
Showing results 1 to 19 of 19

 
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