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I'm looking at a 14' Alumacraft Crappie Jon which has a 15" Transom, but I already have a Long Shaft (20") 9.9 w/ low hours that I want to put on it. I was thinking about installing a Transom Elevator instead of trying to Jury-Rig the Transom to accommodate the longer shaft motor.
Was just wondering if any of you guys have used them w/ lower (10/15) hp motors. And if so, what your experience with them? Do they work as advertised?
Thanks,
YB
Depending on what kind of motor it is, it may be easier to change it to a short shaft. Thats what I did. On some models it only takes a few minutes once you have the parts.
I used this from Bass pro shop and it worked good for me. Mini-Jacker for Clamp-on Outboards
Mini-jacker :ThumbsUp
It's a 1990 9.9 2 stroke Yamaha. I know next to nothing about working boat motors but from what I could gather on line I thought it was only possible to convert a short shaft to a long shaft, and not visa versa. So that's good to know Cmj. Don't know if it is possible w/ my motor though.Quote:
Originally Posted by Cmj
YB
I've looked at the Mini-Jacker's but when mounted according to their directions they only offer a 3" verticle offset, as opposed to the 5"+ that I'll need. That's why I was looking at the Transom Elevators, they state 5" of verticle offset.
YB
Looks like it would work just fine. I would when installing use some backing plate on the inside and some stainless bolts thru the transom to mount it.
I used a Mini-Jacker on my 14' Crestliner. When I bought the boat, I didn't realize it came with a long shaft Yammy instead of a short shaft. With the jack plate I was able to raise the engine's cavitation plate the the lowest point on the center of the transom; which was optimal. This is what she looked like:
Attachment 197063
Attachment 197064
And this is what you need to achieve:
Attachment 197065
Once you have your engine mounted this way, you'll be able to adjust your trim to obtain optimal RPM and top end speed.
Crestliner is spot on.
Appreciate the input guys, but I'm not quite understanding the math here. The Long Shaft motor is on a 20" transom now and the cavitation plate is level with lowest point on the center of the transom. The boat I'm looking to put the motor on has a 15" transom, which means I would have to elevate the motor 5" for the cavitation plate to again be level with lowest point on the center of the transom.
So, if I use a Mini-Jacker which has a verticle off-set (lift) of 3" that still would leave the cavitation plate 2" lower than where it would need to be according to my calculations. Am I missing something here?
Thanks,
YB
Yes, you are. Every engine, regardless of shaft length, is different. It worked out perfectly for me with my Yamaha on a 14' Crestliner. I am not saying it will not in your case, just that you have a wide range of adjustment with with Mini-Jacker, in that you can drill the holes to raise or lower your engine to what you need. The Mini-Jacker comes with blank mounting plate (see photos), so you can raise or lower it to whatever you need. It works.
Where did you hear 3" max lift??? You can get 5" of lift out of it, as many others have. Look at photos, and it will help you understand how to install.
-TH
From the T-H Marine website.Quote:
Originally Posted by thill
"Mini-Jacker™ Jack Plate / Outboard Motor Bracket
This cast aluminum offset type jack plate is designed for clamp-on mount outboard motors up to 35 HP. The Mini-Jacker™ allows mounting of long shaft motors to shorter shaft transom boats. The mini-jacker™ stands off transom 4". The engine mounting surface is 11 1/2" wide x 10" high and features a vertical offset of 3". The overall width of transom mounting flanges is 17"."
I thought when properly mounted, the top of the side flanges (where you drill the holes for mounting bolts) had to be flush w/ the top of the transom.
YB
I understand what you are getting at.
It has 3" offset when flush, but they are made to be raised up as needed. The most common lift height is 5", to accommodate a 20" shaft on a 15" transom. Some people don't like that look, so they use something else. But the mini-jacker works well, in my opinion.
-TH
I just looked at the factory website, and pic #4 shows a long shaft installation. If you look, you will notice that the top bolt is mounted in the 4th divot down from the top.
Thai is straight from their website, so you can feel confident about it.
-TH
You guys are correct, it can be raised some without issues. I called T-H Marine today and spoke with a rep. to confirm. He said although the Mini-Jacker was designed for the top to sit flush w/ the top of the transom, it is fine to raise it up a couple more inches if needed, especially with lighter weight motors like a 9.9 hp, as it is rated for up to 35 hp motors.
I appreciate y'all's input and sorry for the confision .... I tend to overthink things and be a bit anal at times.
YB
I used the mini jacker it's been working good for years now no problems. I posted the picture that was on their web site.Quote:
Originally Posted by thill
http://www.thmarine.com/userfiles/im...atable-500.jpg
Thanks scrat!