Replacing Generator with Alternator

[Thomas Ploch]

We are in the process of replacing the engine (O-235-C1) on our Piper
PA-12. The new engine comes with an Alternator. The existing
electrical system utilizes a Generator. I understand that we will
have to replace the voltage regulator in order to make use of the
Alternator. As I understand it, the voltage regulator is part of the
airframe, so we will need some type of approval to do this. I can't
find an STC for replacing the generator with an alternator on the
PA-12.

Can anyone help me with what needs to be done to get this approved?

Thanks.

[mikem]

Frequent topic on forums or email list at:

www.shortwing.org

MikeM
Pacer '00Z

On 10 Oct 2003 08:19:53 -0700, (Thomas Ploch) wrote:

>We are in the process of replacing the engine (O-235-C1) on our Piper
>PA-12. The new engine comes with an Alternator. The existing
>electrical system utilizes a Generator. I understand that we will
>have to replace the voltage regulator in order to make use of the
>Alternator. As I understand it, the voltage regulator is part of the
>airframe, so we will need some type of approval to do this. I can't
>find an STC for replacing the generator with an alternator on the
>PA-12.
>
>Can anyone help me with what needs to be done to get this approved?
>
>Thanks.

[Stu Gotts]

Or, if that doesn't help, the STC should include the voltage
regulator, a breaker and maybe even thicker primary wire. Try
contacting the alternator's manufacturer, they aren't so anal about
the STC's. They realize it generates business.

On Fri, 10 Oct 2003 10:46:30 -0600, mikem
> wrote:

>Frequent topic on forums or email list at:
>
>www.shortwing.org
>
>MikeM
>Pacer '00Z
>
>On 10 Oct 2003 08:19:53 -0700, (Thomas Ploch) wrote:
>
>>We are in the process of replacing the engine (O-235-C1) on our Piper
>>PA-12. The new engine comes with an Alternator. The existing
>>electrical system utilizes a Generator. I understand that we will
>>have to replace the voltage regulator in order to make use of the
>>Alternator. As I understand it, the voltage regulator is part of the
>>airframe, so we will need some type of approval to do this. I can't
>>find an STC for replacing the generator with an alternator on the
>>PA-12.
>>
>>Can anyone help me with what needs to be done to get this approved?
>>
>>Thanks.