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Author Topic:   SUPER SPORT 15 Jack Plate Installation

Litey posted 05-17-2007 11:17 AM ET (US)
[On a SUPER SPORT 15 which has been fitted with a jack plate] is a transom plate underneath the jack plate and between the jack plate and the transom also used? I have a Bob's convertible MJ5. Should the transom be reinforced before mounting the jack plate?
alfa posted 05-17-2007 11:23 AM ET (US)
I installed the MJ5 on my 1977 15' Sport. No reinforcement necessary.
Some pics http://s10.photobucket.com/albums/a141/alfajet/Sport15/Upgrading/
Alain
Litey posted 05-17-2007 11:49 AM ET (US)
Great pix. Thanks ...anybody else on this ...?
Hey alfa how much height are you running looks like 3".
Really like your bilge hatch and pump setup . You should
cut a bunch and finish them and sell on Ebay ..ha ha
I'd buy one .
alfa posted 05-17-2007 12:06 PM ET (US)
Jackplate not adjusted yet. I'll install the 13x19 Michigan SS prop then try.
Thanks for the bilge !
Good luck
Alain
Tohsgib posted 05-17-2007 12:15 PM ET (US)
No reinforcement necessary but I do recommend that little $20 alum bar that goes behind both of the top mounting bolts inside the splashwell. I run mine about 4-5" up with no problems unless you run offshore. They get a tad funky in following seas if too high plus they can ventilate when trying to plane(like a slipping clutch) which is not good when a 5' wave is trying to crash on your transom.
Sal DiMercurio posted 05-17-2007 03:15 PM ET (US)
Alpha, where are your bottom bolts for your jack plate?
You need 2 more at the bottom.
Sal
an86carrera posted 05-17-2007 03:48 PM ET (US)
Yes I do. Here are some pics:
http://s4.photobucket.com/albums/y104/an86carrera/boats/
I did use the plate that Tohsgib speaks of and I drilled new holes in the jackplate so I could use thru bolts in lower engine well rather than the blind holes many have.
Len
alfa posted 05-18-2007 02:08 AM ET (US)
Sal,
I reused the 2 (bootom) bolts and holes that the 70 VRO had in the slotted holes.
Redrilled the JackPlate (top) to reuse existing holes in transom. Get rid off 2 others. Motor was not mounted as BIA scheme initially.
Lot of dealers do so..
alfa posted 05-18-2007 02:11 AM ET (US)
Fixed link for Len
http://s4.photobucket.com/albums/y104/an86carrera/boats/
Litey posted 05-19-2007 08:49 AM ET (US)
Hey Aplha ,one more question on the Bilge cover ,
I dont see the output hose where is the hose and how does it come out of that cover .
Thanks to all for answers ...
Teak Oil posted 05-20-2007 10:29 AM ET (US)
Alfa with the bolts so close together it would seem all the stress is being concentrated in one area and the fiberglass would be more prone to cracking. If mounted that way I would probably use an aluminum reinforcing plate to prevent cracks.
One nice thing about a Rite-Hite plate or other one piece jackplates is I believe they spread the stresses out much better on the hull. It seems like there is a LOT more surface area
http://smg.photobucket.com/albums/v735/MontaukBob/ Jack%20Plate%20Install/?action=view¤t=DCP_1149.jpg
alfa posted 05-21-2007 12:26 PM ET (US)
Litey,
I have to add the hose. It will pass via one of the semi circular cuts.
This sunday I installed tach and voltmeter and tested them.
I have to install a Rite-Hite on the 22', swap rod holders, and change all tank hoses... (Life is short).
Teak oil,
The Bob's is mounted via pre-drilled holes. The transom is flat and I checked twice before installing it.
Thanks guys for your advices.
Alain

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Author	Topic: SUPER SPORT 15 Jack Plate Installation
Litey	posted 05-17-2007 11:17 AM ET (US) [On a SUPER SPORT 15 which has been fitted with a jack plate] is a transom plate underneath the jack plate and between the jack plate and the transom also used? I have a Bob's convertible MJ5. Should the transom be reinforced before mounting the jack plate?
alfa	posted 05-17-2007 11:23 AM ET (US) I installed the MJ5 on my 1977 15' Sport. No reinforcement necessary. Some pics http://s10.photobucket.com/albums/a141/alfajet/Sport15/Upgrading/ Alain
Litey	posted 05-17-2007 11:49 AM ET (US) Great pix. Thanks ...anybody else on this ...? Hey alfa how much height are you running looks like 3". Really like your bilge hatch and pump setup . You should cut a bunch and finish them and sell on Ebay ..ha ha I'd buy one .
alfa	posted 05-17-2007 12:06 PM ET (US) Jackplate not adjusted yet. I'll install the 13x19 Michigan SS prop then try. Thanks for the bilge ! Good luck Alain
Tohsgib	posted 05-17-2007 12:15 PM ET (US) No reinforcement necessary but I do recommend that little $20 alum bar that goes behind both of the top mounting bolts inside the splashwell. I run mine about 4-5" up with no problems unless you run offshore. They get a tad funky in following seas if too high plus they can ventilate when trying to plane(like a slipping clutch) which is not good when a 5' wave is trying to crash on your transom.
Sal DiMercurio	posted 05-17-2007 03:15 PM ET (US) Alpha, where are your bottom bolts for your jack plate? You need 2 more at the bottom. Sal
an86carrera	posted 05-17-2007 03:48 PM ET (US) Yes I do. Here are some pics: http://s4.photobucket.com/albums/y104/an86carrera/boats/ I did use the plate that Tohsgib speaks of and I drilled new holes in the jackplate so I could use thru bolts in lower engine well rather than the blind holes many have. Len
alfa	posted 05-18-2007 02:08 AM ET (US) Sal, I reused the 2 (bootom) bolts and holes that the 70 VRO had in the slotted holes. Redrilled the JackPlate (top) to reuse existing holes in transom. Get rid off 2 others. Motor was not mounted as BIA scheme initially. Lot of dealers do so..
alfa	posted 05-18-2007 02:11 AM ET (US) Fixed link for Len http://s4.photobucket.com/albums/y104/an86carrera/boats/
Litey	posted 05-19-2007 08:49 AM ET (US) Hey Aplha ,one more question on the Bilge cover , I dont see the output hose where is the hose and how does it come out of that cover . Thanks to all for answers ...
Teak Oil	posted 05-20-2007 10:29 AM ET (US) Alfa with the bolts so close together it would seem all the stress is being concentrated in one area and the fiberglass would be more prone to cracking. If mounted that way I would probably use an aluminum reinforcing plate to prevent cracks. One nice thing about a Rite-Hite plate or other one piece jackplates is I believe they spread the stresses out much better on the hull. It seems like there is a LOT more surface area http://smg.photobucket.com/albums/v735/MontaukBob/ Jack%20Plate%20Install/?action=view¤t=DCP_1149.jpg
alfa	posted 05-21-2007 12:26 PM ET (US) Litey, I have to add the hose. It will pass via one of the semi circular cuts. This sunday I installed tach and voltmeter and tested them. I have to install a Rite-Hite on the 22', swap rod holders, and change all tank hoses... (Life is short). Teak oil, The Bob's is mounted via pre-drilled holes. The transom is flat and I checked twice before installing it. Thanks guys for your advices. Alain