Charger25
Well-known member
Perhaps something like this, it can be used to raise or lower the motor. just to give ya an idea
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Tracker jon boat/motor issue
- Thread starter k4jns
- Start date
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See in the picture u posted it showed the cav plate really higher then the bottom of the transom. Is that ok with the motor back farther? I'm sorry I'm just trying to get a better understanding. I was looking at something like this mini jacker https://www.basspro.com/MiniJacker-for-Clampon-Outboards/product/8782/ but its not adjustable like I really think it needs to be. I honestly don't want to spend a crazy amount of money. I saw some on ebay also that are adjustable in the 150 price range.
richg99
Well-known member
Well, I sure wouldn't just go buying jack plates ( I've owned a few); Doel fins; Smart Tabs (great product) or any other add-ons until you have a real handle on what the problem and solution is.
From your original post, I thought it was blowing out while turning quickly.
There must be a Tracker's forum someplace. You need to find a group of owners who have experienced exactly your issue, with your same boat and motor combination. Then, you need to find out what THEIR solution was to that exact same issue. Only then would it make sense to buy something IMHO.
All of these add-ons solve problems, in one way or another. None of them solve ALL problems. As I said before, you may need nothing more than some cup added to your prop.
richg99
p.s. If the issue was that the tracker transoms were too vertical, they sell wedges that will tilt your engine to a more normal slant. I doubt that will do anything for you....but???
p.p.s. Here are a couple of Tracker boat forums'
https://forums.iboats.com/forum/owners-groups-by-manufacturer/t_z/tracker-boats
https://www.ultimatebass.com/bass-fishing-forum/index.php?board=493.0
https://www.thebassholes.com/bassin-forums/182-tracker/13532-tracker-owners.html
From your original post, I thought it was blowing out while turning quickly.
There must be a Tracker's forum someplace. You need to find a group of owners who have experienced exactly your issue, with your same boat and motor combination. Then, you need to find out what THEIR solution was to that exact same issue. Only then would it make sense to buy something IMHO.
All of these add-ons solve problems, in one way or another. None of them solve ALL problems. As I said before, you may need nothing more than some cup added to your prop.
richg99
p.s. If the issue was that the tracker transoms were too vertical, they sell wedges that will tilt your engine to a more normal slant. I doubt that will do anything for you....but???
p.p.s. Here are a couple of Tracker boat forums'
https://forums.iboats.com/forum/owners-groups-by-manufacturer/t_z/tracker-boats
https://www.ultimatebass.com/bass-fishing-forum/index.php?board=493.0
https://www.thebassholes.com/bassin-forums/182-tracker/13532-tracker-owners.html
It started out with blowing out on sharp left turns. But the I've swapped to a 35 hp motor that's started doing the same type thing only when going strait at high rpm. I just went and talked to a a friend that builds off shore race boats and he's going to look at in Monday but the first thing he said was get that motor down lower and that he's seen things like this happen with flat bottoms.
Skiffing
Well-known member
k4jns said:
Yes.
Underway the water will swell after the boat passes right? That water is higher then when exiting from beneath the hull.
Therefore, your engine can be higher when it is on a jackplate further away from the transom.
With your 35HP you are ventilating at high RPM because the prop is losing grab on the water when the hull planes down. When the hull planes down the transom is effectively raised.
Your prop may be under-pitched as well - which will contribute to the problem - but the fact remains your engine is too high.
When I was adjusting my jackplate [see thread in my signature] I raised the engine about an inch higher from where it worked fine. The result was ventilation at WOT unless the water was like glass. A little chop and it would ventilate.
I lowered it back an inch and everything has been fine.
I'm running a 16' V @ 1250 lbs loaded w/ a 40HP and a 14" x13 pitch prop. ~ 28mph WOT.
I'm going to do some further testing this week. This is what I have been tossing around in my mind. 1- this happened with the 9.9 motor when turned hard left with me sitting on left side of the boat. 2- With the 35 hp this doesn't happen when it's just me in the boat. But does happen when I have me and another person and gear = weight. I'm starting to think maybe it could be the weight making the boat sit lower. Which means the cav plate could be to low? I made some shims to play with so maybe I can bring the motor up a hair for testing with the type of weight in the boat again. Either way its either the motor is to high or to low. Looking at pictures of cav plates when the boat is moving I see most don't have water on them just splashing them when at WOT. I'm starting to thing I might have been looking at this the wrong way. I'll get it out there and do some testing to figure out what I exactly need to do either way I believe a jack plate is going to be the answer obviously.
