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Old 27 June 2016, 11:45   #51
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Originally Posted by chipko View Post
Thanks Max. Would love to know the thinking Bombard had behind the concave transom. Surely if it had a straight V to match the floor it would give a nice 90 deg. hard edge to the joint. Hope it's not just to save material when cutting transoms from a standard sheet!
Possibly - they don't ever seem to want to spend any money on tooling, procedures or refinements. We all agree the Aerotec is pretty impressive and hugely capable but they really need to add a few inches to the beam, re-design the transom shape and height and change the blooming floor to anything but white! Two handles on the bows to match the rear would be handy too.




Pic here (my floor is slightly deflated for storage so not as tight as normal):
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Old 27 June 2016, 11:55   #52
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Aerotec transom splash issue.

Same with mine Max. Nice taught hull with a saggy bottom just where it counts.... Nobody likes a saggy bottom!
I'm tempted to duck tape (lots of layers) a plastic angle to each side to temporarily form a hard angle between hull and transom. Worried it may damage hull/engine if it gives up at high speed though. Also don't relish cleaning glue residue off.
Edit; A fairly firm foam filler packed in the void internally might just pack it out enough to help a little and not damage anything.
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Old 27 June 2016, 12:04   #53
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I made this:

Rigging an Aerotec
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Old 27 June 2016, 12:11   #54
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Yes, been impressed with your deflector in previous threads. I also bodged a temp one some time ago. It did work to some degree.
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Old 27 June 2016, 14:21   #55
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I hope monkey doesn't mind me linking his image but just noticed that the Futura has quite a similar transom shape... but has a much neater squared off end to the floor where it attaches to transom...

https://c1.staticflickr.com/8/7428/2...28ba0262_o.jpg
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Old 28 June 2016, 06:11   #56
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Just looking at the diagram and comments of Chipko in post #48...

I wonder if the way the water leaves the floor is very sensitive to the "angle of attack" of the floor. Not sure if I'll end up explaining well what I'm thinking but...

If the boat is very evenly loaded... perhaps even a little bow heavy (which is close to our situation) with enough weight that the bow will not lift much at all for small waves... then the water exiting from under the floor in the transom area will come out quite level.

If you are one up or laden such that it is bow high and/or bow light so it will lift at the slightest wave then the transom will be "digging in" which will mean that exiting water will tend to be going round a slight corner and be squeezed out with more upwards force??
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Old 28 June 2016, 08:23   #57
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Quote:
Originally Posted by chipko View Post
Same with mine Max. Nice taught hull with a saggy bottom just where it counts.... Nobody likes a saggy bottom!
I'm tempted to duck tape (lots of layers) a plastic angle to each side to temporarily form a hard angle between hull and transom. Worried it may damage hull/engine if it gives up at high speed though. Also don't relish cleaning glue residue off.
Edit; A fairly firm foam filler packed in the void internally might just pack it out enough to help a little and not damage anything.
I thought about trying to stuff some dense foam into the back corner. Thing is my 420 doesnt suffer too badly, only slight splashing when going full tilt with one up. I always have it pumped right up to the max, even if its slightly below pressure the splashing and flex is a bit offputting
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Old 28 June 2016, 17:54   #58
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I did these mods to the transom two years ago not had a problem with the water coming over the top since,

Transom mods aerotec 380, Pictures
Some pictures of the transom height mods I've done to the areotec. Two heights for two different engines, 25mm for the mercury 15hp and 50mm for the Johnson 30hp. With the engine sat in-between the plate it can only go in one place so centralizes the motor every time. Have used 8 of the 9 same screw holes in the transom so its not laced with holes.
Just need to got 2 bolts to finish it off.







I've since dropped the height down to 40mm as now using Tohatsu 25.


This is from a post 2 years ago but don't know how to link it in.
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Old 28 June 2016, 18:38   #59
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Transom mods aerotec 380, Pictures

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Old 17 June 2017, 16:39   #60
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Bumpsville for this topic, so much useful stuff was discussed here.

Has anyone done any further work or mods on this in the past year?
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