Re: F24 Ranger Carb question

Egon · Post by **Egon** » Thu Feb 16, 2012 1:40 am

'Hi All

After standing for a year, we started my F24 yesterday. The revs were good until 1600RPM, when higher revs the engine stopped. I think it is a fuel problem. The flow from the tank is ok, so we took the carb off for inspection. It looked ok but I think a jet is blocked with old fuel.

The question is: I have a new carb. (type Stromberg 4B). Can anyone tell me wich metering jet is installed for the C5 engine? And what about the float level? Because this carb comes of a PT19 with fuel pump, and I think a float level at 9/16 inch is a bit too low, as we discovered at steep climbs.

I also read something about a setting for the C5 engine, this should be 8038 but what does this mean?

Any help appreciated!

Thanks

Egon Baatz
G-AJPI'

Fritz Mehrer · Post by **Fritz Mehrer** » Thu Feb 16, 2012 10:11 am

'I believe it's your magnetos. I had the same problem and overhauled every
and finally, the magneto. It then worked.

-----Original Message-----
From: fairchildclub@yahoogroups.com [mailto:fairchildclub@yahoogroups.com]
On Behalf Of Egon
Sent: Wednesday, February 15, 2012 11:41 PM
To: fairchildclub@yahoogroups.com
Subject: [fairchildclub] F24 Ranger Carb question

Hi All

After standing for a year, we started my F24 yesterday. The revs were good
until 1600RPM, when higher revs the engine stopped. I think it is a fuel
problem. The flow from the tank is ok, so we took the carb off for
inspection. It looked ok but I think a jet is blocked with old fuel.

The question is: I have a new carb. (type Stromberg 4B). Can anyone tell me
wich metering jet is installed for the C5 engine? And what about the float
level? Because this carb comes of a PT19 with fuel pump, and I think a float
level at 9/16 inch is a bit too low, as we discovered at steep climbs.

I also read something about a setting for the C5 engine, this should be 8038
but what does this mean?

Any help appreciated!

Thanks

Egon Baatz
G-AJPI

------------------------------------

Yahoo! Groups Links'

Egon Baatz · Post by **Egon Baatz** » Thu Feb 16, 2012 10:27 am

'Fritz, The magnetos are overhauld one year ago. They should work fine? Egon
To: fairchildclub@yahoogroups.com
From: avdflyr@cox.net
Date: Thu, 16 Feb 2012 08:11:27 -0800
Subject: RE: [fairchildclub] F24 Ranger Carb question

I believe it's your magnetos. I had the same problem and overhauled every

and finally, the magneto. It then worked.

-----Original Message-----

From: fairchildclub@yahoogroups.com [mailto:fairchildclub@yahoogroups.com]

On Behalf Of Egon

Sent: Wednesday, February 15, 2012 11:41 PM

To: fairchildclub@yahoogroups.com

Subject: [fairchildclub] F24 Ranger Carb question

Hi All

After standing for a year, we started my F24 yesterday. The revs were good

until 1600RPM, when higher revs the engine stopped. I think it is a fuel

problem. The flow from the tank is ok, so we took the carb off for

inspection. It looked ok but I think a jet is blocked with old fuel.

The question is: I have a new carb. (type Stromberg 4B). Can anyone tell me

wich metering jet is installed for the C5 engine? And what about the float

level? Because this carb comes of a PT19 with fuel pump, and I think a float

level at 9/16 inch is a bit too low, as we discovered at steep climbs.

I also read something about a setting for the C5 engine, this should be 8038

but what does this mean?

Any help appreciated!

Thanks

Egon Baatz

G-AJPI

------------------------------------

Yahoo! Groups Links

[Non-text portions of this message have been removed]'

Tom · Post by **Tom** » Fri Feb 17, 2012 1:35 pm

'Egon,
The type certificate for the Ranger Engine (TCDS No.216) calls for either a Stromberg NAR-4B, or
Marvel MA4-5.The Stromberg settings, and part numbers, are in the Stromberg Float Carburetor Specification Sheet (8038) that is specific to the C5 Ranger Engine. I have that sheet but it's way over my head. I do see it calls for a 9/16 float level, but there is where it gets tricky. If the carb your having trouble with is set for the PT series aircraft its setup for a fuel pump pressure of three pounds. As I understand it the F24R series requires only one pound and is gravity flow. Look carefully at the data plate on the carb. If it says three pounds it may not function well at high rpm's and especially at takeoff power with nose high attitude. I finally sent the carb to the below repair station. It's pricey, but one less thing to worry about. They said the float level seat or valve or something had to be shimmed because it was setup for three pounds and the fuel in the bowl would not replenish itself quickly enough at higher power settings. So they set it for one pound. Whatever! Tom Hanford,Ca

Aircraft Systems, Inc
Rockford, IL
(815)399-0225

--- In fairchildclub@yahoogroups.com, Egon wrote:
>
> Hi All
>
> After standing for a year, we started my F24 yesterday. The revs were good until 1600RPM, when higher revs the engine stopped. I think it is a fuel problem. The flow from the tank is ok, so we took the carb off for inspection. It looked ok but I think a jet is blocked with old fuel.
>
> The question is: I have a new carb. (type Stromberg 4B). Can anyone tell me wich metering jet is installed for the C5 engine? And what about the float level? Because this carb comes of a PT19 with fuel pump, and I think a float level at 9/16 inch is a bit too low, as we discovered at steep climbs.
>
> I also read something about a setting for the C5 engine, this should be 8038 but what does this mean?
>
> Any help appreciated!
>
> Thanks
>
> Egon Baatz
> G-AJPI
>

'

Bob · Post by **Bob** » Sat Feb 18, 2012 9:05 am

'Egon,

I suspect plugged high-speed jet. Low-speed jet will allow engine to turn up to 1600 rpm. If the engine ran well one year ago, the high-speed jet is the problem. If you had the same problem a year ago, then it is possible that someone had swapped the high-speed jet with the low-speed one.

I also have sent a carb to this repair shop -- good results but quite pricey ,since they want to install Derlin Needles:

Aircraft Systems, Inc
Rockford, IL
(815)399-0225

Bob W.
1939 Fairchild 24-K
Webster, MN

--- In fairchildclub@yahoogroups.com, Egon wrote:
>
> Hi All
>
> After standing for a year, we started my F24 yesterday. The revs were good until 1600RPM, when higher revs the engine stopped. I think it is a fuel problem. The flow from the tank is ok, so we took the carb off for inspection. It looked ok but I think a jet is blocked with old fuel.
>
> The question is: I have a new carb. (type Stromberg 4B). Can anyone tell me wich metering jet is installed for the C5 engine? And what about the float level? Because this carb comes of a PT19 with fuel pump, and I think a float level at 9/16 inch is a bit too low, as we discovered at steep climbs.
>
> I also read something about a setting for the C5 engine, this should be 8038 but what does this mean?
>
> Any help appreciated!
>
> Thanks
>
> Egon Baatz
> G-AJPI
>

'

Jack Threadgill · Post by **Jack Threadgill** » Sat Feb 18, 2012 11:49 am

'I have had Aircraft Systems, Inc. in Rockford, IL do numerous jobs for me
and have always been very satisfied with their work. They are an excellent
shop.

Jack

N1941N

PT-19

Jack M. Threadgill

1602 Brook Hollow Dr

Bryan, Texas 77802

979-779-7155

threadgl@suddenlink.net

From: fairchildclub@yahoogroups.com [mailto:fairchildclub@yahoogroups.com]
On Behalf Of Bob
Sent: Saturday, February 18, 2012 9:06 AM
To: fairchildclub@yahoogroups.com
Subject: [fairchildclub] Re: F24 Ranger Carb question

Egon,

I suspect plugged high-speed jet. Low-speed jet will allow engine to turn up
to 1600 rpm. If the engine ran well one year ago, the high-speed jet is the
problem. If you had the same problem a year ago, then it is possible that
someone had swapped the high-speed jet with the low-speed one.

I also have sent a carb to this repair shop -- good results but quite pricey
,since they want to install Derlin Needles:

Aircraft Systems, Inc
Rockford, IL
(815)399-0225

Bob W.
1939 Fairchild 24-K
Webster, MN

--- In fairchildclub@yahoogroups.com
, Egon wrote:

>
> Hi All
>
> After standing for a year, we started my F24 yesterday. The revs were good

until 1600RPM, when higher revs the engine stopped. I think it is a fuel
problem. The flow from the tank is ok, so we took the carb off for
inspection. It looked ok but I think a jet is blocked with old fuel.

>
> The question is: I have a new carb. (type Stromberg 4B). Can anyone tell

me wich metering jet is installed for the C5 engine? And what about the
float level? Because this carb comes of a PT19 with fuel pump, and I think a
float level at 9/16 inch is a bit too low, as we discovered at steep climbs.

>
> I also read something about a setting for the C5 engine, this should be

8038 but what does this mean?

>
> Any help appreciated!
>
> Thanks
>
> Egon Baatz
> G-AJPI
>

[Non-text portions of this message have been removed]'