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 Post subject: motor height on transom
PostPosted: 24 May 2012, 14:24 
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Joined: 31 Mar 2012, 10:49
Posts: 134
Location: Jacksonville, Florida
Does the motor need to be bottomed out on the transom or is it ok to lift it up some for extra clearance and performance. My motor cav plate sits about 2" or so below the bottom of the boat maybe more, but it looks like i have room to lift it up at least that much if it is safe to do so. My motor is through bolted now and will be again if i lift it and use the clamps as back ups.



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 Post subject: motor height on transom
PostPosted: 24 May 2012, 15:31 
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Joined: 04 Mar 2012, 10:03
Posts: 247
Location: Smyrna, GA
If you're bolting through you can likely use/steal Sgt. Stiglitz idea for a jack plate (not the first pic the second) :)

http://www.tinboats.net/forum/viewtopic.php?f=4&t=21376

I think the closer to the bottom of the boat you can get the cav plate level too - the happier you will be.



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 Post subject: motor height on transom
PostPosted: 24 May 2012, 21:03 
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Joined: 31 Mar 2012, 10:49
Posts: 134
Location: Jacksonville, Florida
yeah your right, i am going to need some sort of jack plate, after looking more closely i didnt have as much room as i thought i had, the hand screws are only about and inch and a half down form the top of the transom and the cav plate is probably closer to 3 inches below the bottom :-( this is probably hindering my performance. i have seen the fixed non moving jack plates they sell in bass pro and the like, boy they are proud of those things, i didnt really want my motor set back another few inches, but oh well not much choice in the matter, might tinker around with a design similar to the link you sent me.



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 Post subject: motor height on transom
PostPosted: 24 May 2012, 21:18 
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Joined: 23 Mar 2011, 12:57
Posts: 810
Location: Gulf Shores Alabama
Here are some pictures of my simple jack plate. Took a couple minutes to install. Found the material at a local dock builder/welder. Cost 30$ , Stainless hardware was more expensive than the material.


g33334.jpg
foot3.jpg

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 Post subject: motor height on transom
PostPosted: 24 May 2012, 22:12 
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Joined: 15 May 2012, 11:35
Posts: 24
Location: LaGrange, IL
That looks great!!! very simple!!

Forgive my ignorance, but what are the two big pontoons for on the back of your boat??


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 Post subject: motor height on transom
PostPosted: 25 May 2012, 10:22 
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Joined: 23 Mar 2011, 12:57
Posts: 810
Location: Gulf Shores Alabama
Flotation pods. They help keep the stern up when additional weight is added, I.E. bigger motor, passenger weight, etc. That particular boat was a 1032 so with two people and a motor it rode pretty low to the water line. These pods helped raise the back up and prevented it from getting swamped.



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 Post subject: motor height on transom
PostPosted: 25 May 2012, 15:05 

Joined: 04 Mar 2012, 03:43
Posts: 59
Location: Frankfort Ky
sixgun86 wrote:
Flotation pods. They help keep the stern up when additional weight is added, I.E. bigger motor, passenger weight, etc. That particular boat was a 1032 so with two people and a motor it rode pretty low to the water line. These pods helped raise the back up and prevented it from getting swamped.



Is that something That came with the boat or are they add ons?


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 Post subject: motor height on transom
PostPosted: 25 May 2012, 22:07 
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Joined: 31 Mar 2012, 10:49
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Location: Jacksonville, Florida
sixgun86 wrote:
Here are some pictures of my simple jack plate. Took a couple minutes to install. Found the material at a local dock builder/welder. Cost 30$ , Stainless hardware was more expensive than the material.



is that 2" or 3" L , stainless or aluminum? what size motor did you run and did you have any flex? Thanks i may end up doing something like this but not quite so high.



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 Post subject: motor height on transom
PostPosted: 25 May 2012, 22:16 
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Joined: 23 Mar 2011, 12:57
Posts: 810
Location: Gulf Shores Alabama
JaxJonBoat wrote:
is that 2" or 3" L , stainless or aluminum? what size motor did you run and did you have any flex? Thanks i may end up doing something like this but not quite so high.


I don't have it around any longer to measure but I believe it was 1.5" x 3" L aluminum. Pickuped up a 3ft stick. Had them cut it in two for me. Had a 5hp two stroke yamaha. Absolutely no flex. Best part was that bend kept the motor from sliding off if it came lose. It can only be as strong as your transom. If you had a plate that spanned the weight and torque over a larger section of the transom it would be even more durable. Add a couple mounting holes and adjustments wouldn't be difficult. Trim can make the biggest difference in performance. In this case I was mounting a 20" shaft on a 15" transom.

nimmor wrote:
Is that something That came with the boat or are they add ons?


They were add on's. Think it cost me $45 a pod by my local welder. Trick is to find someone that does fair-good work for reasonable price. Some guys out there think their welds are gold.


foot5.jpg

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 Post subject: motor height on transom
PostPosted: 26 May 2012, 14:50 

Joined: 07 Mar 2011, 19:58
Posts: 1373
Location: front royal, va
$45 a pod? Are they welded or bolted to transom? I bees some for my boat but never fathomed it being that cheap.



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 Post subject: motor height on transom
PostPosted: 26 May 2012, 15:35 
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Joined: 23 Mar 2011, 12:57
Posts: 810
Location: Gulf Shores Alabama
lovedr79 wrote:
$45 a pod? Are they welded or bolted to transom? I bees some for my boat but never fathomed it being that cheap.


They were welded which can be tricky as the skin on some of these boats are pretty thin as you can see some blow outs needed to be repaired. The fella that does my fab/welding has some pretty competitive pricing. It wasn't easy finding him. Used him a couple times now and he knows I'm cheaper than charlie. Keep coming back!


pod4.JPG
pod2.JPG

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 Post subject: motor height on transom
PostPosted: 26 May 2012, 23:29 

Joined: 30 Mar 2011, 12:04
Posts: 169
Location: Middle Georgia
sixgun86, you might want to consider using a bit longer bolt to attach the jack plate to the transom. You should have 1 1/2 threads minimum protruding past the end of the nut to ensure proper engagement. The self-locking feature of the nuts shown in your first picture aren't fully engaged and you could be in for a mishap.


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 Post subject: motor height on transom
PostPosted: 27 May 2012, 21:34 

Joined: 07 Mar 2011, 19:58
Posts: 1373
Location: front royal, va
Hhhhmmmm...... I need pods. But on my grizzly the back has benches/floatation right where the pods would be.



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 Post subject: motor height on transom
PostPosted: 29 May 2012, 11:57 
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Joined: 23 Mar 2011, 12:57
Posts: 810
Location: Gulf Shores Alabama
Mojo^ wrote:
sixgun86, you might want to consider using a bit longer bolt to attach the jack plate to the transom. You should have 1 1/2 threads minimum protruding past the end of the nut to ensure proper engagement. The self-locking feature of the nuts shown in your first picture aren't fully engaged and you could be in for a mishap.



Good eye Mojo. In that pic I was just sizing everything up with them just taught, but think there was only 1/2 after tightened. Been awhile and that boat has a new home.



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 Post subject: motor height on transom
PostPosted: 30 May 2012, 18:00 

Joined: 12 Feb 2012, 22:18
Posts: 39
Location: Indy Area
I'm getting ready to rebuild my transom and not 100% certain what level on the shaft is supposed to line up with the bottom of the boat.

Image

Using this picture as a reference, would it be level A or B or somewhere in between?

If I were lucky enough to get on plane I'd guess level A to keep the water pump inlet under water, but if someone was to ask me to point to the cavitation plate... I would guess B.

Could someone please clarify?

Thanks



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