Search found 10 matches

by Chuckak
May 25th, '24, 10:57
Forum: Swap & Sell
Topic: Bertram 31 1970 original rudders
Replies: 3
Views: 485

Re: Bertram 31 1970 original rudders

I believe they are the shark's fin style. They are curved at the top near the post.
by Chuckak
May 8th, '24, 17:57
Forum: Swap & Sell
Topic: Bertram 31 1970 original rudders
Replies: 3
Views: 485

Re: Bertram 31 1970 original rudders

Still have them. Will scrap out if no one wants them.
by Chuckak
May 3rd, '24, 18:23
Forum: Swap & Sell
Topic: Bertram 31 1970 original rudders
Replies: 3
Views: 485

Bertram 31 1970 original rudders

Have two original rudders for sale from a 1970 Sportfisherman
by Chuckak
May 9th, '22, 17:36
Forum: General Discussion
Topic: Battery advice
Replies: 39
Views: 28069

Re: Battery advice

I am upgrading the electrical system on a 1970 Bertram 31 Sportfisherman. It has 502 gas big block engines with 100 amp alternators. I moved the starting batteries to center bilge area which are Optima 34M 800 cold cranking amps AGM batteries. The starting batteries have a 10 amp 3 stage charger for...
by Chuckak
Dec 9th, '20, 05:45
Forum: General Discussion
Topic: Potential 454 Replacement?
Replies: 17
Views: 11669

Re: Potential 454 Replacement?

Chuck, Do you have more information on your setup? trans ratio, prop pitch x diameter, measured fuel burn? My goal is a reliable, 24-knot cruise, at 1mpg. My goal this winter is to get the old 454s back into shape with fuel monitors, and see how attainable that may be. I miss stated the WOT speed -...
by Chuckak
Dec 8th, '20, 07:12
Forum: General Discussion
Topic: Potential 454 Replacement?
Replies: 17
Views: 11669

Re: Potential 454 Replacement?

I just purchased a 1970 Bertram 31 Sportfish this spring that had new old stock Mercruiser carbureted 502 Magnum engines (black motors) installed in 2016. Supposedly rated at 400-420 HP. It is currently over propped as I only get 4250 rpm at WOT at 47 mph. Buying new props this winter to bring the W...
by Chuckak
May 19th, '20, 06:38
Forum: General Discussion
Topic: New Bertram 31 Owner - What Insurance Companies?
Replies: 24
Views: 5925

Re: New Bertram 31 Owner - What Insurance Companies?

Received quotes from Haggerty, American Modern, Progressive and Geico(Boat US). Went with Geico, agreed value policy under $900 - covers US waters and Great Lakes. (Bahamas is extra)
Thanks for all the input.
by Chuckak
May 13th, '20, 06:19
Forum: General Discussion
Topic: New Bertram 31 Owner - What Insurance Companies?
Replies: 24
Views: 5925

Re: New Bertram 31 Owner - What Insurance Companies?

I have Allstate for everything else but they wont insure a boat over 35 years old.
by Chuckak
May 13th, '20, 06:15
Forum: General Discussion
Topic: New Bertram 31 Owner - What Insurance Companies?
Replies: 24
Views: 5925

Re: New Bertram 31 Owner - What Insurance Companies?

Home port is Anchor Bay - Lake St. Clair Michigan
by Chuckak
May 12th, '20, 13:18
Forum: General Discussion
Topic: New Bertram 31 Owner - What Insurance Companies?
Replies: 24
Views: 5925

New Bertram 31 Owner - What Insurance Companies?

New owner of a 1970 Bertram 31 Sport Fish and am looking for insurance company options. What do others use? I have quotes from Boat US and Haggerty.
I will have a lot of questions in the near future once I get the boat shipped home.

Thanks,

Charlie