So I bought a new B&G Nac-3 course computer when my Alpha control box
(calling it a computer would be too generous) died, and have finally gotten around to installing it. I'm having a dealer install it so that I get the warranty (they said they had to at least review the install for B&G to honor the warranty), but they are balking at using the Alpha mechanical ram drive and trying to sell me a B&G T2 drive.
Their reasoning is that the Alpha is a low power
unit, using a small motor
, which was connected with to power with 18 gauge wire (looked more like 14 to me, need to check it again). I'm not sure why this is an issue unless the Nac-3 could somehow supply too much juice to the ram. They also maintain that if the ram jams that it could "burn up the transistors in the computer." This seems like a bunch of hooey to me. There must be some fault protection that would prevent this as otherwise it would be a risk with any ram, since the only connection between them is +/-.
While I'd like to have some of the features of a new ram (a clutch
instead of manual tiller arm engagement, etc.) and expect to update it at some point, the T2 is around $2k and it's going to take considerable modification of the mount and the tiller arm to fit it.
Alpha rams are famously efficient and robust. I know others have used this combination successfully. if it works I'd like to use it in the short term, but I don't want to "blow up" the Nac-2 along the way.
So my questions comes down to this. Is there any risk to the B&G Nac-2 in using it with the Alpha ram? Is there risk to the ram? There is a B&G (Simrad) rudder
feedback unit installed.
Thanks to anyone with some expertise on this.