John Brock
  • Male
  • Hudson, OH
  • United States

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John Brock's Discussions

Dual action hydraulic trim tab question
5 Replies

My 1973 410 has factory installed hydraulic trim tab cylinders. These have two hose fittings on each cylinder. One pushes up, the other pushes down.I had a problem where both tabs would move when…Continue

Started this discussion. Last reply by John Brock Apr 12.

410 AC Wiring Diagram with Generator
7 Replies

My 1973 410 has two 30A shore power connections plus a generator. A couple years ago the Square D AC breaker panel located below the transfer switch burned up. Loose or corroded neutral connection …Continue

Started this discussion. Last reply by Dan Stokely Feb 12.

410 Trim Tab Through Hull Corrosion
8 Replies

I have a 1973 410 Commander. I boat in Lake Erie. Pulled the boat yesterday for the  season and found a severe corrosion problem with the trim tab extensions and through hill for the piston rod that…Continue

Started this discussion. Last reply by Ronald Zick Oct 17, 2020.

410 Fresh Water Winterizing
5 Replies

I have a 1973 model which has 100 gallon fresh water tank fiber glassed beneath the floor in the rear stateroom. My normal winterization method is to drain and  bypass the hot water tank. Then pump…Continue

Started this discussion. Last reply by Kevin McKinnon Sep 19, 2020.


John Brock's Page

Profile Information

Which Commander model do you presently own?
410 Commander
Boat Year
Boat Name
Reality Axis
Hull Number
Crusader Big Block Repower
Home Port
Chagrin Lagoons Yacht Club, Eastlake , Ohio
Phone Number
Spouse's full name
Connie Brock
Have you ever owned any other Commanders?
31' Commander×

John Brock's Photos

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Comment Wall (6 comments)

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At 1:10pm on October 7, 2019, Kevin McKinnon said…

John, I just checked your page as I couldn't remember where you were from and I noticed you own a Commander and married a Connie!! My dad drove Chevy's and married a Caddie. He's no longer with me but your page made me think of him.  Thanks!

At 5:02pm on February 6, 2015, Andrew Gust said…

Thank you for your input John. Still thinking it through!

At 8:36pm on September 4, 2014, Tim Toth said…

Thanks for the Rendezvous comment

At 10:19am on June 5, 2014, Larry Musgrave said…

John, I own a 1977 41' flush deck according to my title work 410  I had some blue prints that came with the boat and I also ordered some from the museum I believe. they are on my boat 3 hours away. i will take snap shots of them and send the pictures to you to see if it will work.  If so I can try and have copies made but not sure the cost.


At 6:06pm on June 3, 2014, Larry Musgrave said…

John i now have some electrical blue prints but they are very large! if you need

At 9:25am on June 11, 2013, Ron Gobbell said…


I've not seen that many boats and do not know what is typical.  The couple I've seen, it did not seem to ba a problem.  Very minor hairline cracks, but nothing significant.

Good luck, it is a great boat.



Club News



6th Annual CCCC Photo Contest Winners

1st Place: Mark Struebing, Michigan USA       Model:  1969 35 Sports Cruiser

2nd Place:   Kristian & Jacqueline, Illinois, US             Model:  1967 27' Commander Custom

3rd place:  Dawn Stone, Michigan, US                     Model:  1970 55' Commander


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SuperDisc 15.0 is an electronic encyclopedia of every aspect of Commander maintenance and repairs. The information on the disk is retrieved from the discussion forum and e-mail list, but organized in a way that makes information easy to find and use. SuperDisc is available on USB flash drive.  The Morland Commorative Edition is Superdisc 15.0 with the addition of the Spring 2020 Dick Morland Memorial Issue of STYLED IN FIBERGLASS. This is the last superdisc in its present format. 

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The Resource Collection 6.0 contents include CC Catalogs and Brochures. CC Service Bulletins, CC Price Lists. Engine & Transmission Manuals. Dick Avery sketches and drawings, a folder for every Commander model, and all kinds of technical and interesting stuff as well as archived posts for 2019 and 2020. Over 193 folders and 2,823 Files. A true “Treasure Trove” for the Commander owner!

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