Generator rebuild

Ask Questions and Offer Advice Related to the Cessna 120 & 140 Type
Forum rules
You must be a member of the Cessna 120-140 Association in order to post new topics, reply to existing topics, or search for information on this forum. Use the "Join" link in the red menu bar.
Post Reply
per ardua ad astra
Posts: 14
Joined: Fri Jun 19, 2020 5:36 pm
Name:
Aircraft Type:
Occupation-Interests:
Contact:

Generator rebuild

Post by per ardua ad astra »

Hi

I’m having a spare generator rebuilt by a classic car specialist. They are finishing up the job and have asked, which direction does the generator turn? When viewed from the front, that is to say viewing the drive assembly, is it clockwise or ACW?

Very many thanks

Andy
User avatar
6643
Posts: 2443
Joined: Tue May 01, 2018 7:00 am
Name: John C
Location: KLCI, NH
Aircraft Type: 1946 C140/C90
Occupation-Interests: A&P, semi-retired
Contact:

Re: Generator rebuild

Post by 6643 »

Clock-wise when viewed from the drive end.
per ardua ad astra
Posts: 14
Joined: Fri Jun 19, 2020 5:36 pm
Name:
Aircraft Type:
Occupation-Interests:
Contact:

Re: Generator rebuild

Post by per ardua ad astra »

Very many thanks John.

Much appreciated.

So just to be absolutely certain, the generator rotates in the opposite direction to the prop?


Edited to add: I’ve just discovered Fig 10 in the overhaul manual, which I think may be helpful to me. Naturally it seems to be in complete agreement with you John.

Many thanks again.
User avatar
6643
Posts: 2443
Joined: Tue May 01, 2018 7:00 am
Name: John C
Location: KLCI, NH
Aircraft Type: 1946 C140/C90
Occupation-Interests: A&P, semi-retired
Contact:

Re: Generator rebuild

Post by 6643 »

per ardua ad astra wrote: Fri Jan 14, 2022 9:29 amSo just to be absolutely certain, the generator rotates in the opposite direction to the prop?
Yeah, it's driven off of the inside of the cam gear, so it turns the same direction as the cam, which is opposite the crank.
per ardua ad astra
Posts: 14
Joined: Fri Jun 19, 2020 5:36 pm
Name:
Aircraft Type:
Occupation-Interests:
Contact:

Re: Generator rebuild

Post by per ardua ad astra »

Many thanks.
Post Reply