Post by: follow maggie on July 18, 2018, 07:00:08 PM
Grant
Sent from my iPhone using Tapatalk
Post by: NRA4LIFE on July 18, 2018, 07:20:31 PM
Post by: j_h_nimrod on July 18, 2018, 08:09:34 PM
My first suggestion would be drilling. I did that with my aluminum V 15 years ago and it is still holding. Use good quality hard rubber or plastic washers on each side and you should be fine. If gluing, go with one of the heavy duty 3M marine adhesives. I glued in a small piece of plywood into my bigger glass boat for a 2nd bilge pump 5 years ago and I don't think I could pry that thing off today.
That is the difference in fiberglass and aluminum. You can make permanent attachments to fiberglass, but aluminum is much more resistant to adhesion due to its rate of oxidation. About any adhesive, paint, or coating will come off aluminum before other substrates.
Not sure why you don’t want to drill holes, but that is the only sure way to attach something to aluminum. You could build a bracket that attaches to the transom, but that is a pain.
Post by: Badhabit on July 18, 2018, 08:40:26 PM
Post by: 92xj on July 18, 2018, 08:46:26 PM
Apoxy the flat surface then silicone the border of a 1/2"-3/4" thick piece of uhmw (think cutting board material). Can be found at most machine/plastic Fab shops. Screw your transducer into it. if you can't find a piece, buy a cutting board, or go to Amazon or Cabela's and search plastice transducer mounts to avoid drilling into boat. Use some sort of etching primer on aluminum. I also screwed my uhmw to the boat and the expoy and border silicon seals it completely and you will never have an issue.
Post by: J.Brower on July 23, 2018, 09:19:42 AM
Sent from my iPhone using Tapatalk
Post by: SkookumHntr on July 23, 2018, 09:26:12 AM
Post by: gaddy on July 23, 2018, 09:37:26 AM
Post by: CP on July 23, 2018, 09:39:32 AM
3M 5200 will stick to aluminum, and never come off. It sealed up many rivets in my old smokercraft sled, as well as some small electrolysis caused holes in the sides. Even if you end up screwing it on, I would strongly suggest putting a layer of 5200 as well. You won’t need rubber washers or anything with the 5200, just put a little in the hole before you tighten the screws down.
Sent from my iPhone using Tapatalk
:yeah: +1 for 3M 5200
Post by: rasbo on July 23, 2018, 10:05:38 AM
Post by: quadrafire on July 23, 2018, 10:07:47 AM
Post by: 92xj on July 23, 2018, 10:24:07 AM
https://www.fishfindermounts.com/product-page/15mm-magnetic-transducer-mount-kit
Have you personally used this by chance?
If so, what's your thoughts on the strength vs thickness of boat material?
The gears on turning and what all I could do with that mount depending on it's strength, especially under power.
Post by: quadrafire on July 23, 2018, 10:57:49 AM
I've not, but the videos look impressive. I have one of their mounts for my frameless pontoon.https://www.fishfindermounts.com/product-page/15mm-magnetic-transducer-mount-kit
Have you personally used this by chance?
If so, what's your thoughts on the strength vs thickness of boat material?
The gears on turning and what all I could do with that mount depending on it's strength, especially under power.
Give them a call they are very helpful on the phone.
Post by: Switchback on July 23, 2018, 11:31:01 AM
You could also use HDPE or UHMW or something, essentially a thick cutting board. The Stern Saver has a few holes in the back where you put the glue – I'd take a look at it and do holes like that if you decide to build one yourself. Maybe also consider something like JB Weld – I don't think that stuff would ever come off.
Post by: M_ray on July 23, 2018, 12:10:35 PM
Post by: Alchase on July 23, 2018, 01:40:24 PM
I just drilled, used silicon gasket material and screwed it on. Haven't had a leak in several years. I also covered the screws on the inside with silicon. The screws I used were black coated and have not corroded.
I have done this to all my boats, never had a leak. Transducer, speed indicator, and Smart Tabs (trim tabs) all mounted the same way.
Post by: gaddy on July 23, 2018, 03:02:31 PM
How thick is your hull? Can you mount on the floor shoot through? Slow setting epoxy will work
Mine had instructions for through the floor. If I remember right they did not recommend going through aluminum, good on wood or glass. Scatters the signal or something ?
Post by: SkookumHntr on July 30, 2018, 11:22:12 AM
Post by: bassquatch on August 01, 2018, 07:50:48 AM