solar7647
Lieutenant Junior Grade
- Joined
- Apr 23, 2009
- Messages
- 1,218
Re: 1987 Four Winns 215 Sundowner Refit/Repower
I put it together on the ground then lifted on to the boat. Once it was on the boat I slide it to a location an looked at the side profile. I kept doing that until it sat where i liked it. Then I made sure it was square by measuring from the back of the boat to the holes in the rear mount. It ended up being that the centers of the holes where 64 inches from the transom. You have to measure from the bow or the transom because you cant rely on the anything else on a boat being square. I then made sure the front feet where sitting proper and re checked my measurement, then with the tower set in place I had the room to drill the holes using the holes in the mounting feet as guides.
Yes the side down poles slide in and out of top cross bars. When it is put together on the ground you make the distance between the inside of the down poles the same width as the boat, and then tape the seem where the down poles slide into the top cross bar to keep them from moving. Then once the side supports are bolted down you remove the tape and adjust the poles making sure they are both slid into the top cross member the same amount so that it is square. Then you drill holes for bolts to slide through the cross bar and the down poles that will keep them from moving.
No the backing plates didnt need beefed up. The manufacture calls for a specific thickness of fiberglass that is safe to bolt to I think it was 1/8 inch, and in my case the area that it is bolted to is plywood sandwiched between fiberglass so it is a little more then an inch thick. The backing plate them selves are 1/4 inch thick aluminum plates.
If the fiberglass is not thick enough they suggest beefing it up with more fiberglass. If I would have had that issue I would have went and made much large backing plates to help spread the stress out better.
How did you go about mounting it to your hull? Did you kinda "eye ball" it to see where you wanted to mount it, then mark and cut the holes?
I put it together on the ground then lifted on to the boat. Once it was on the boat I slide it to a location an looked at the side profile. I kept doing that until it sat where i liked it. Then I made sure it was square by measuring from the back of the boat to the holes in the rear mount. It ended up being that the centers of the holes where 64 inches from the transom. You have to measure from the bow or the transom because you cant rely on the anything else on a boat being square. I then made sure the front feet where sitting proper and re checked my measurement, then with the tower set in place I had the room to drill the holes using the holes in the mounting feet as guides.
How does it adjust for different widths of boats? I assume at the top of the tower you can either slide the tower together or pull it apart to adjust?
Yes the side down poles slide in and out of top cross bars. When it is put together on the ground you make the distance between the inside of the down poles the same width as the boat, and then tape the seem where the down poles slide into the top cross bar to keep them from moving. Then once the side supports are bolted down you remove the tape and adjust the poles making sure they are both slid into the top cross member the same amount so that it is square. Then you drill holes for bolts to slide through the cross bar and the down poles that will keep them from moving.
Also, did you beef up the backing plates on the mounts??
BTW..I like the smooth curves as well
No the backing plates didnt need beefed up. The manufacture calls for a specific thickness of fiberglass that is safe to bolt to I think it was 1/8 inch, and in my case the area that it is bolted to is plywood sandwiched between fiberglass so it is a little more then an inch thick. The backing plate them selves are 1/4 inch thick aluminum plates.
If the fiberglass is not thick enough they suggest beefing it up with more fiberglass. If I would have had that issue I would have went and made much large backing plates to help spread the stress out better.