Armstrong brackets?

reptocarl · Joined: 16 Oct 2016 Posts: 4

Anyone installed these on your C-Dory and what were the results? Are they worth it and were trim tabs still needed?

thataway · Posted: Tue Oct 18, 2016 5:22 pm Post subject:

The general perception--is that they are not going to give any advantage for the 22 and 25's--and may have some detraction--putting the weight further aft, Tom Herrick, who is extending his 22 has decided to extend the hull bottom, rather than put on a bracket.

See: http://www.c-brats.com/viewtopic.php?t=22727

http://www.boatdesign.net/forums/boat-design/motor-bracket-c-dory-33452.html

The exception to this is I believe a few of the 26/27 commercial boats which had I/O and a transom, have used brackets for an outboard conversion.

What one would gain, is a longer cockpit--by putting in a solid transom up to the gunnel. But then the fuel tanks would have to be moved in the 22--(and that has been done on some boats) to saddle tanks.

It is not a cheap, conversion--and the benefits are minimal if any on most of the boats.

MikeR · Posted: Tue Oct 18, 2016 5:37 pm Post subject:

Here's a thread on a 26' Pro Angler restoration with bracket conversion from original I/O that Bob mentioned. Coincidentally this boat, Great Republic, is currently for sale in the Seattle market on Craigslist.
http://www.c-brats.com/viewtopic.php?t=22511&postdays=0&postorder=asc&start=0

thataway · Posted: Tue Oct 18, 2016 6:16 pm Post subject:

Here is the link to Great Republic

Surprised she is for sale, considering the work which went into her for the restoration! Seems like a good price--excellent fishing boat. If I was younger, I would have considered extending the cabin--but there are pluses of each decision. Still a very nice boat!

Robert H. Wilkinson · Posted: Thu Oct 20, 2016 10:17 pm Post subject:

I believe Armstrong can custom make a bracket to conform to the hull - which in effect lengthens the waterline. This may allow for a speed increase as it changes the ratio between waterline/beam. Bob Rosborough added this type of bracket to a lot of the 246's. More speed is not something Cdory owners are usually looking for but if a boat is powered in the 50 - 70% range it may help you get by with less hp.

A bracket without hull extension will change the steering geometry as it places the thrust farther aft of the pivot point of the boat.

If I was ordering a new Rosborough I would definitely add a bracket, but I would not re engineer the transom of a 22CD just to add a bracket - unless it was rotted and needed replaced anyway. Like Bob said it would be a lot of work, a lot of money and you may or may not be happy with the results.

Regards, Rob

san juanderer · Posted: Fri Oct 21, 2016 12:17 am Post subject:

Extending the running surface, is a by-trial experience. Some have worked, others have not.
Most pod builders, step up away from the water running surface.
Having been a Rosborough 246 owner, the full width / hull running surface extension has had mixed reviews. My pod stepped up. The full width pod, adds to much bouyancy to the rear end. And makes for some not so kindly steering issues in running in following seas.
Best to deal with a builder that mounts what they build, rather than just a retailer of what they build.
I just put a pod on my Seasport 24 XL, it steps up 5" and angles upward from there.
alan