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Old 14 January 2010, 17:59   #11
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aerotec 380 engine height

thanks easyrider and locozodiac for all your help. will definitely be raising the transom height when the weather over here gets warmer. just googled bombard aerotec and found these 2 images. (original bombard transom and modified version) hope this helps other bombard owners. 1 more thing :- does it matter if the wooden block is 20, 25, 30mm, is it an exact science ?
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Old 14 January 2010, 20:29   #12
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Originally Posted by uny1965 View Post
thanks easyrider and locozodiac for all your help. will definitely be raising the transom height when the weather over here gets warmer. just googled bombard aerotec and found these 2 images. (original bombard transom and modified version) hope this helps other bombard owners. 1 more thing :- does it matter if the wooden block is 20, 25, 30mm, is it an exact science ?
20 mm is a good starting point to solve splashing issues forever, if still splashing a bit try 25 mm, must screw transom front and rear plates to match this new position. To understand what you must do, see pics. If the tech procedure is hard work, try a 20/25 mm metal plate and secure to middle transom to compensate.

Happy Sibbing
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Old 15 January 2010, 03:14   #13
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I dont think you will go wrong with 20 or 30 mm height- i forgot to add, you also need to raise the outer transom board up too(its only screwed on)-the extra piece of wood goes between the forward metal plate and the outer ply board.
It handled extremely well with the 30(much much better than the 15 it came with), the only time i ever noticed the floor really flex was if i was on flat calm water as it built up some form of pressure wave beneath it, never did it with if there was any chop. It used to do about 30knots
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Old 15 January 2010, 07:16   #14
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On my 380 Aerotec the previous owner had fitted a piece of wood along the top of the transom to raise the engine height by about 25mm. It works fine with the motor at that height.

I took it off to try it as standard and the boat suffers badly from spray at speed - I'll be putting it back next time out.
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Old 15 January 2010, 08:17   #15
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Just to take the nail out and for tech data, what is the total height of your wooden rear engine support block if happens to be a square one, see pic. Forgot to mention that the height you must add to transom (20-30mm) to raise engine to avoid water splashes specially if using Tohatsu engines, will depend on tube diameter, as you have sibs with 40/42/45/50 mt. diameter tubes, although not rocket science, has some precise science to it. In my case, needed 25 mm transom raise because my sib has 45 mt tubes.

Happy Sibbing
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Old 05 February 2010, 04:56   #16
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I had to do the same to my 380, it worked a treat no more water coming over the transom!
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Old 05 February 2010, 13:53   #17
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engine height on aerotec

hi nick, just looking at the pics of your boat, seems like a lot of people have been having trouble with the aerotec transom/engine height. am interested to know what you used to raise the engine height, is it just a piece of scrap wood you had lying about or is it something you bought specially and also what size is the block. most people seem to agree 25/30mm block is best.
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Old 06 February 2010, 12:12   #18
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Hi it was just a bit of wood I had lying around it would be between 25 to 30mm & I took off the ply plate off the transom & moved it up to support the new block & painted it black! Works a treat.
Easy mod & makes a world of difference.
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