FS18 transom

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Aripeka Angler
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FS18 transom

Post by Aripeka Angler » Tue Nov 14, 2017 9:10 am

I have been looking at photos of FS18 transoms on the web and here.
I'm noticing some that appear to be built taller than the 20" standard.
Is this done as a way to not use a jack plate?


Richard
Completed boats...XF20 "Red Alert", Aripeka Angler's Strip Canoe
Currently building...PY12 Kayak and FS18 "Bare Bones"
If there is magic on this planet, it is contained in water. - Loren Eiseley

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jacquesmm
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Re: FS18 transom

Post by jacquesmm » Tue Nov 14, 2017 11:22 am

Correct.
I think I show an option on the plans for no motorwell and higher transom.
I know that I designed that option for the kits and hope that I included the drawings in the plans.
Jacques Mertens - Designer
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Aripeka Angler
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Re: FS18 transom

Post by Aripeka Angler » Tue Nov 14, 2017 3:30 pm

Thanks for the reply Jacques.
I bought the CNC kit so the transom was cut to 20 inches in height and I ordered the boat kit without the motor well.
The Bob's jack plate top bolts are ending up partially into the deck.
The plate has 2" of rise already built in when it's mounted in the normal position and the hydraulics are in the down position.
I absolutely, positively do not want a motor well. The motor shaft length is 20"
Should I...
1) Add an inch or so to the top of the transom to get the top bolts above the rear deck?
2) Cut the transom flush with the rear deck?
3) Re-drill the aluminum jack plate?
Richard
Completed boats...XF20 "Red Alert", Aripeka Angler's Strip Canoe
Currently building...PY12 Kayak and FS18 "Bare Bones"
If there is magic on this planet, it is contained in water. - Loren Eiseley

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Re: FS18 transom

Post by Fuzz » Wed Nov 15, 2017 3:01 am

How much would you need to lower the bracket to clear? How much lift does the bracket have and do you need it all? If you raised it any more would the prop still get a good bite?

Aripeka Angler
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Re: FS18 transom

Post by Aripeka Angler » Wed Nov 15, 2017 9:49 am

Fuzz wrote:
Wed Nov 15, 2017 3:01 am
How much would you need to lower the bracket to clear? How much lift does the bracket have and do you need it all? If you raised it any more would the prop still get a good bite?
If I don't re-drill the plate I would need to take 2" off of the top of the transom to get the bolts and backing plate to clear the underside of the stern deck.
The bracket has 6" of lift and a 2" rise built-in.
Your last question is the one that I need someone who is running one of the higher transoms to answer. Basically, will the prop "bite" if I add another inch to the top of the transom. (On top of the built-in 2" from the Bob's jack plate)
Richard
Completed boats...XF20 "Red Alert", Aripeka Angler's Strip Canoe
Currently building...PY12 Kayak and FS18 "Bare Bones"
If there is magic on this planet, it is contained in water. - Loren Eiseley

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Re: FS18 transom

Post by Aripeka Angler » Wed Nov 15, 2017 9:41 pm

Thanks for the replies.
I think I have a plan...
Richard
Completed boats...XF20 "Red Alert", Aripeka Angler's Strip Canoe
Currently building...PY12 Kayak and FS18 "Bare Bones"
If there is magic on this planet, it is contained in water. - Loren Eiseley

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BarraMan
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Re: FS18 transom

Post by BarraMan » Thu Nov 16, 2017 1:20 am

The bracket has 6" of lift and a 2" rise built-in.
I assume you mean 6" of setback and 2" of lift built in!

As for the answer to your question? I wouldn't have a clue. There are so many variables. In the case of my boat, where I put a motor with a 20" leg on a boat with a big transom, everyone was concerned that the motor would be too high (me included!).

In the end, gradually I lifted it another 4" on the engine bolts and it is just fine. The prop is semi-surfacing at that height but does not cavitate even in tight power turns.

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Re: FS18 transom

Post by Aripeka Angler » Thu Nov 16, 2017 6:34 am

This is one of the boats I was eyeballing when I was trying to figure out my dilemma.

Image

At first glance it would appear that this transom is much taller than standard.
According to the builder, it's only 21" tall which is one inch taller than the standard transom.
The top of the standard transom is about 2-1/2" above the stern deck at the center.
What makes the transom of this boat appear so tall is the builder has chopped 3" off of the sheer at the stern and feathered it out to zero removed at the bow. Note the block of wood on top of the jack plate and the 20" shaft motor.

So here is what I ended up doing.
I now have a 15" shaft motor to use. By chopping off the transom, I can now get to the bolt holes under the rear deck and the boat looks cool when viewed from the bow. View from the side after major surgery. I like the look, it will be very clean after I round over the edges and tape in the deck. The deck plate is necessary to get to the bolts and add oil to the jack plate reservoir...

Image

Just to clarify, this plate has 2" of lift built in, 4" setback and 6" of hydraulic travel.
Richard
Completed boats...XF20 "Red Alert", Aripeka Angler's Strip Canoe
Currently building...PY12 Kayak and FS18 "Bare Bones"
If there is magic on this planet, it is contained in water. - Loren Eiseley

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topwater
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Re: FS18 transom

Post by topwater » Thu Nov 16, 2017 7:51 am

I like it :!:
Novi 23 finally launched !

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Re: FS18 transom

Post by Jeff » Thu Nov 16, 2017 8:15 am

AA, I like it as well!! Jeff

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