Also allows mounting of long shaft motors to shorter shaft transom boats
This cast aluminum offset type jack plate is designed for clamp-on mount outboard motors up to 35 HP. Improves performance and handling of smaller or lighter boats. The Mini-Jacker also allows mounting of long shaft motors to shorter shaft transom boats. Mini-Jacker mounts to boat transom with bolts and then engine is simply clamped and/or bolted on. The Mini-Jacker stands off transom 4". The engine mounting surface is 11-1/2"Wx10"H and features a vertical offset of 3". The overall width of transom mounting flange is 17". Mounting hardware not included.
Rated 3 out of 5 by Craigdo Inadequate offset for a 15" transom application
Great quality/solid construction. Easy to install. Pre-drilled stater holes are a nice touch (really makes installation much easier). If I were basing my rating only upon quality of construction I'd give this product a five star rating. Function is where this product falls short... My criticism being that this jack plate only raises the motor level by 3" (vertical offset), which is only half of the vertical offset needed to make a long shaft motor perform optimally when mounted on a short shaft (15" tall) transom. To get best performance from a long shaft motor mounted on a 15" transom, you'll really need a vertical offset of 6" (or 3" above what this jack plate actually provides). So, additional transom modifications will be needed in order to get the most out of this product.
August 23, 2011
Rated 5 out of 5 by BeirutVet Great Purchase
Highly recommend this item for those running a long shaft motor on a short transom. Great performance, handles better, planes better even better speed, though not rocket speed with a small outboard but noticble for sure. Did not have to extend any cables to install. Easy...
August 15, 2011
Rated 5 out of 5 by BennB Works great. Quality product
The photos and desctiption don't do it justice. This is a quality piece of hardware that I mounted on a 14' aluminum row boat and installed a 15 hp long shaft outboard on a 15" transom and it worked great. I had previously had a short shaft outboard and the added room from the offset is nice. The inside of the alumimun is a 1.5 inch piece of marine plywood. Very solid. Installation was easy, athough you need to provide the bolts. The cast aluminum drills easily and there are a lot of holes patterns to make it work with about any boat.
June 24, 2011
Rated 4 out of 5 by BB11 Good product
Mini-Jacker is a good product at a good price.
Only down side is the plywood insert that sits on the inside of the jack plate. The cross notches in the plywood are not quite deep enough to fit over the ridges on the inside of the jack plate, but this can be easily fixed with a circular saw.
Installed on an Alumacraft Yukon 165 (aluminum boat) and it works well for my 9.9 four stroke kicker motor.
May 5, 2011
Thinking of picking this up to use as a kicker mount for our 18' Four Winns. Description says it has a 4" clearance which would be great since I'd have to install where the tie down is. I'd keep the tie down in place and just reach under to tie it down at the end of the day. Anyone else use it as a kicker mount?
The important factor is the distance the cavitation plate is below your boat. mine is 1/4 inch. If you rase your motor too high, you will cavitate and over heat/burn up motor. put a straight edge on your cavitation plate of your motor and measure to bottom of your boat.
I have a 16', 52" bottom alumacraft with a new 2009 mercury 25HP fourstroke, longshaft. Will this minijacker lift my motor too high, causing cavitation? I fish shallow marsh and could stand to run a little shallower. I would buy this jack plate if I knew that the L/D was not excessive for my boat. PLease advise.
It raises the height 3". I mounted mine 2" above the top of the transom and added a piece of 2"x2" square tubing onto the transom so I would have something for the top bolts to mount to. I used a total of 8 3/8" bolts and it solid. it works perfect for gaining the 5" although the instructions recommend mounting it no higher than the top of the transom.
It will raise it at least 4". You could go 5 and likely 6t if you mount the top of the mounting plates above the transom top. To do to this, you need to have a flat transom. Some aluminum boats have a lip on top of the transom, that make this difficult, unless you shim the mounting plate, which would work fine, but would take a bit more finesse to install than just bolting it on.
This thing is solid. I mounted a 15 HP long shaft on it that was at least 110 lbs. It is rated for a 35 hp and seems likely to easily take that. I think it is a bit over enginered and would easily take that, as long as you bolted it on adequately with quality hardware.
No, I own one and if you try mounting it lower on the transom then the vertical offset portion of the mount will be too low to allow the outboard motor clamps to clear the space between the transom and the mount. I've seen welding shops cut a small portion out of the transom, re-seal, then mount a short shaft on a long shaft transom. Locally, $150.
Yes, the mount comes with no pre-drilled holes. The indentations you see are starter spots to drill through so that the mount is very adaptable to many boat applications. You can mount with 4,6,8 or whatever amount of bolts you desire by drilling.
Not likely. This will add about 4" in transom height.... 18" is likely a small HP short shaft, which is designed to go on a 15" transom. You could mount it lower on the transom, so the top is 2" below the transom, but it would be hard to get to the mounting screws on the outboard as the transom would be in the way.