Understanding Generator "Codes"

[Pavewlc]

Well, when it rains it pours....
In addidition to the fuel leak (see posts below) the gen/voltage reg has some issues. I'm trying to understand the numbers on top of the generator. They are listed as such:

Delco-Remey 1101879
Serial Number 2725
12 Volt

There is a 25 Amp C/B in the Cabin. Does this mean I have a 25 Amp Generator? Previous posts stated the number was stamped on top of the Gen, but I don't see anything the clearly states "25 Amps" on the case.

Thanks again,
Lee

[lowNslow]

Does this mean I have a 25 Amp Generator?

Yes. The Delco-Remy 1101879 is a 25 amp generator. This is the maximum amperage generator usable with aircraft with the undamped crankshaft. You can tell if your crank is undamped by looking at the propeller flange on the crank. If it has a 1/4 in. hole drilled in the flange, it is undamped. The letter "D" in the C145 serial number is also supposed to indicate a damped crank, but with all the switching around of parts in these old engines the only way to tell for sure is to check for the hole.

[Pavewlc]

Thanks!! Is there a list/post somewhere that one could use to match the numbers with the output?

Cheers,
Le

[lowNslow]

Here's a partial list:

12A = Delco Generator 1110890
20A = Delco Generator 1101910, 1101899, 1101896, 1101891
25A = Delco Generator 1101879, 1101887, 1101917
35A = Delco Generator 1101898, 1101913, 1101914, 1101918, 1101900
50A = Delco Generator 1101912, 1101908, 1101915

There may be some other models as well.

[GAHorn]

FYI: The 50A cannot be fitted to a 170 due to it's length.