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Author Topic:   Transom Elevator

superrman77 posted 06-11-2007 11:58 PM ET (US)
I have a 1966 13 sport with 15 inch transom. I found a transom elevator on Iboats. Does anyone know where I can get an elevator that works with the curved transom? I am wanting to mount a 25hp long shaft motor on it.
Thanks
superrman77 posted 06-12-2007 12:33 AM ET (US)
Here is what I am talking about. If anyone thinks I should go a different route all comments would be great. I am not wanting to dump a ton of money into this.
http://www.iboats.com/Transom_Elevators/dm/view_id.40157
kamie posted 06-12-2007 01:05 AM ET (US)
Not sure your going to find something to get you up 10 inches. 1966 had a 15 inch shaft, if you can't find a short shaft, then get a 20 inch shaft and try using either the transom elevator or a standard jackplate.
Plotman posted 06-13-2007 12:02 PM ET (US)
Kamie - a 20 inch is a long shaft outboard - 25" is XL.
Superman - I think your best bet would be to use 2 lengths of square tubing to make what amounts to a fixed jack plate. Bolt the aluminum tubing to the boat using the existing holes, and then bolt the motor to the tubing, but 5" higher.
You can buy 3" square, 3/16" wall thickness 6061 aluminum alloy tube from McMaster Carr for about $70 for a 3 foot length. Some tapered washers or even just shims will deal with the curved transom.

crabby posted 06-13-2007 12:32 PM ET (US)
CMC markets a pair of aluminum "L" brackets to do exactly what you are talking about. I picked up a pair on this site last year (unused) for $75, they probably cost about the same from CMC.
Sal DiMercurio posted 06-13-2007 01:51 PM ET (US)
A 5" jack plate will do the very same thing & it's already made.
He's only putting a 25 hp engine on it, so the small cheaper jack plates will do the job.
Going with a jack plate will allow him to raise or lower the engine without haveing to drill a bunch of new holes every time he wants to raise it, or lower it.
Sal
alfa posted 06-13-2007 02:40 PM ET (US)
Sal is right.
Good advice.
Plotman posted 06-13-2007 03:24 PM ET (US)
One piece jack plates do not like the curved transom of the 1 - you will end up needing much thicker shims than you'd thnk at the ouside edges. Also, some jack plates don't have the vertical adjustment you need. How do I know? I have one in my garage waiting for a use.

The CMC "high jacker" plates provide only 3.5 inches of lift. Still not quite enough, even using the engine adjustmnt holes.
Sal DiMercurio posted 06-13-2007 04:29 PM ET (US)
Bob's Machine shop manual jack plate is 2 pieces & has 5" setback or 2-1/2" setback, & 5" lift or drop, plus you get another 2-3/4" lift or drop from the engine bracket it'self.
There's 3 holes on the engine bracket that allows 2-3/4" either up or down movment.
Those are the bolt holes in the bracket.
Over all, you can get up to 8" of lift or drop from a 5" jack plate.
Sal
superrman77 posted 06-14-2007 12:27 PM ET (US)
Thanks for all of the help. I have changed my mind and I went ahead and purchased a 40 HP motor. I lucked into finding a short shaft for my 66 sport. Man these things are hard to find.
andygere posted 06-14-2007 04:32 PM ET (US)
Good choice finding the right motor for the hull. Having owned a 1972 13 Sport, I've always insisted that the only proper way to rig one of these boats is with a 15-inch shaft motor. Anything else is a bit of a kluge. You will love the performance with a 40 hp outboard.
TomP posted 08-06-2007 10:47 PM ET (US)
Is this (http://cook-mfg.net/cart/index.php?main_page=product_info&cPath=10_13&products_id=13) the product from CMC that crabby is talking about? If so, did you actually mount them? I have a 1970 13’ that’s designed for a short shaft. I’ve got a 50hp Merc500 (1985) on it. I’d like to raise the motor without using any type of setback. Pictures would be grrrreat
Thanks,
Tom
teddyfive posted 08-06-2008 01:01 AM ET (US)
found this tonight...gonna go get one on thursday...
i will post pix next week....TEDDYFIVE
http://www.kentfab.com/Transdaptor%2013.htm

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Author	Topic: Transom Elevator
superrman77	posted 06-11-2007 11:58 PM ET (US) I have a 1966 13 sport with 15 inch transom. I found a transom elevator on Iboats. Does anyone know where I can get an elevator that works with the curved transom? I am wanting to mount a 25hp long shaft motor on it. Thanks
superrman77	posted 06-12-2007 12:33 AM ET (US) Here is what I am talking about. If anyone thinks I should go a different route all comments would be great. I am not wanting to dump a ton of money into this. http://www.iboats.com/Transom_Elevators/dm/view_id.40157
kamie	posted 06-12-2007 01:05 AM ET (US) Not sure your going to find something to get you up 10 inches. 1966 had a 15 inch shaft, if you can't find a short shaft, then get a 20 inch shaft and try using either the transom elevator or a standard jackplate.
Plotman	posted 06-13-2007 12:02 PM ET (US) Kamie - a 20 inch is a long shaft outboard - 25" is XL. Superman - I think your best bet would be to use 2 lengths of square tubing to make what amounts to a fixed jack plate. Bolt the aluminum tubing to the boat using the existing holes, and then bolt the motor to the tubing, but 5" higher. You can buy 3" square, 3/16" wall thickness 6061 aluminum alloy tube from McMaster Carr for about $70 for a 3 foot length. Some tapered washers or even just shims will deal with the curved transom.
crabby	posted 06-13-2007 12:32 PM ET (US) CMC markets a pair of aluminum "L" brackets to do exactly what you are talking about. I picked up a pair on this site last year (unused) for $75, they probably cost about the same from CMC.
Sal DiMercurio	posted 06-13-2007 01:51 PM ET (US) A 5" jack plate will do the very same thing & it's already made. He's only putting a 25 hp engine on it, so the small cheaper jack plates will do the job. Going with a jack plate will allow him to raise or lower the engine without haveing to drill a bunch of new holes every time he wants to raise it, or lower it. Sal
alfa	posted 06-13-2007 02:40 PM ET (US) Sal is right. Good advice.
Plotman	posted 06-13-2007 03:24 PM ET (US) One piece jack plates do not like the curved transom of the 1 - you will end up needing much thicker shims than you'd thnk at the ouside edges. Also, some jack plates don't have the vertical adjustment you need. How do I know? I have one in my garage waiting for a use. The CMC "high jacker" plates provide only 3.5 inches of lift. Still not quite enough, even using the engine adjustmnt holes.
Sal DiMercurio	posted 06-13-2007 04:29 PM ET (US) Bob's Machine shop manual jack plate is 2 pieces & has 5" setback or 2-1/2" setback, & 5" lift or drop, plus you get another 2-3/4" lift or drop from the engine bracket it'self. There's 3 holes on the engine bracket that allows 2-3/4" either up or down movment. Those are the bolt holes in the bracket. Over all, you can get up to 8" of lift or drop from a 5" jack plate. Sal
superrman77	posted 06-14-2007 12:27 PM ET (US) Thanks for all of the help. I have changed my mind and I went ahead and purchased a 40 HP motor. I lucked into finding a short shaft for my 66 sport. Man these things are hard to find.
andygere	posted 06-14-2007 04:32 PM ET (US) Good choice finding the right motor for the hull. Having owned a 1972 13 Sport, I've always insisted that the only proper way to rig one of these boats is with a 15-inch shaft motor. Anything else is a bit of a kluge. You will love the performance with a 40 hp outboard.
TomP	posted 08-06-2007 10:47 PM ET (US) Is this (http://cook-mfg.net/cart/index.php?main_page=product_info&cPath=10_13&products_id=13) the product from CMC that crabby is talking about? If so, did you actually mount them? I have a 1970 13’ that’s designed for a short shaft. I’ve got a 50hp Merc500 (1985) on it. I’d like to raise the motor without using any type of setback. Pictures would be grrrreat Thanks, Tom
teddyfive	posted 08-06-2008 01:01 AM ET (US) found this tonight...gonna go get one on thursday... i will post pix next week....TEDDYFIVE http://www.kentfab.com/Transdaptor%2013.htm