Striper Talk Striped Bass Fishing, Surfcasting, Boating - View Single Post - Installing big thru hull transducers...have you done it?

nightfighter · 11-20-2011, 08:15 AM

[QUOTE=Raider Ronnie;901443]Installed a handful
My BHM has an Airmar b260 the blue fairing block is huge (2ft long)
Location for the install is key.
Then you have to figure the dead rise angle, mine was 5 degrees.
Mounted it in a tilted fence band saw for the cut. The piece that is cut off is the inside backer for when you bolt it together.[/QUOTE]

A critical piece to consider. Good post, Ron. While the saw is set up, cut a second block of wood or plastic as a back up. Sometimes the cut off of the blue block gets dinged up, or won't fit in the bilge between stringers. I have also seen the inside backer cut too thin. In that case, just add a block to the backer. May have to countersink to reach the transducer for securing. Use the cutoff as template BEFORE installing. (Had to do this fix for a friend who had already installed with 5200, so I was drilling blind from the inside...)

11-20-2011, 08:15 AM	#3
nightfighter Seldom Seen iTrader: (0) Join Date: May 2001 Posts: 10,543	[QUOTE=Raider Ronnie;901443]Installed a handful My BHM has an Airmar b260 the blue fairing block is huge (2ft long) Location for the install is key. Then you have to figure the dead rise angle, mine was 5 degrees. Mounted it in a tilted fence band saw for the cut. The piece that is cut off is the inside backer for when you bolt it together.[/QUOTE] A critical piece to consider. Good post, Ron. While the saw is set up, cut a second block of wood or plastic as a back up. Sometimes the cut off of the blue block gets dinged up, or won't fit in the bilge between stringers. I have also seen the inside backer cut too thin. In that case, just add a block to the backer. May have to countersink to reach the transducer for securing. Use the cutoff as template BEFORE installing. (Had to do this fix for a friend who had already installed with 5200, so I was drilling blind from the inside...)
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