Bombard Aerotec ready for the maiden voyage (b@stard son of a Y Class)

[Max...]

Good try though!

Decided to cut mine down (before I read your post!) as it was a bit in the way, also riveted the rubber as glue will not hold for long I think. Sikaflex is defrosting and I've done a test piece to see how well it might hold to the transom......

[Max...]

David, any chance on your trip you could gaffer tape a piece of plastic a la Loco's second anti splash plate to see if it really could be that simple?

[Landlockedpirate]

I'm pretty sure the splashing is not engine specific, mine splashed with both a Yamaha 8 and 25hp.

I thick the general feeling that the spashing is caused by the hull shape is correct.

Love the spalsh guard Max, hope it works, Dragons Den next stop

For comparison, the Yam 25hp on mine with no shim. A 35mm one seems to work best.

[Fenlander]

>>>any chance on your trip you could gaffer tape a piece of plastic a la Loco's second anti splash plate

Well I've searched the holiday cottage for anything suitable and no luck. But have a look at these stills from the video made earlier to get an idea of just how much confused water you need to hold back.

This was at about 15kts two up trimmed in middle posn and with a 20mm shim. It looks like the leg is deeper in than it actually was as the spray in the images makes the water level look higher than reality.

I'm thinking it will take the bracket idea to hold that lot back.

[Max...]

Sikaflex will not work, failed to hold.

Back to the second anti splash plate idea, not sure, will have to try it to check I guess, just it would be much more preferable to have a little permanent plate on the engine that a big flap off the back of the transom.

Loco's was a long leg but he did seem to conclude that it was the water travelling vertically up the leg and specifically hitting the bracket that directed it upwards:

[Max...]

Splashing looks pretty significant:

[Max...]

Borrowing Loco's pics of the plate attached:

[Max...]

could it be this simple on the Mariner/Mercury?:

[Max...]

Something like this on the Mercury/Mariner?

[Fenlander]

It would be a miracle if a tab similar to that held back the inverted waterfall I'm getting. I think you are the chap to make one of those that tapes or clips on in addition to the bracket and trial both.

We are just setting up this morning for the last trip of the holiday and then it's back home. Spare boat to sell and a car to buy/fettle for youngest daughter who is 18 on Friday. I reckon we'll not get to the sea for a month to try again.

The last thing I'm trying this morning before it all gets washed off and packed away is two shims that total 44mm which will be more than 50% over the previous thickest. If they were a decent improvement then a (reversible) lift of the inner/outer transom pads will be needed.

[Max...]

Originally Posted by Fenlander

It would be a miracle if a tab similar to that held back the inverted waterfall I'm getting. I think you are the chap to make one of those that tapes or clips on in addition to the bracket and trial both.

This one is a bit bigger.

I''ll rivet on the L brackets once painted so it can just be gaffer taped on for a trial.

If anyone wants a plan view of the template I have one.

[matt h]

Those mods look great..i remember on mine with a yam and Merc 15 two stroke it used to do the same..
I have just managed to find a new B 380 with a new Yam 9.9 four stroke so looking forward to getting out on that next week for a blast,
The yam 15 two stroke was coming in at 36kgs and the 2015 9.9 yam was 39 kgs so very little difference now and as the 380 was new....
Some pics of previous beasts

[Max...]

Cheers Matt, I remember your 'my new whacky SIB' topic well.

So, you've gone full circle?

[Fenlander]

Matt I see you have the Trem HD wheels on your Bombard... I'm just about to let a pair go with an outfit but may live to regret that and keeping the removable gen Zodiac ones with the large tyres... too much buoyancy makes the Zodiac ones hard to control under water!

[matt h]

So, you've gone full circle?

Hi Max.. yes I remember that//
I do like the Bombards as really are the best out there. tbh i was lucky with the price so I thought it would be a laugh for the summer and will be interesting to see how the performance is with the yam 9.9 f/s. still have my other toys tho!!
I did find the trem were very good and have a similar version coming....

I wonder if you could make a light weight drive and steering system like a sealegs styleee.. strap on nose wheel and motor assembly.

[Max...]

Here's a final update (before testing that is) now the plate is varnished/painted. I've also covered the brackets in heatshrink to protect against the leg and blend it all in better. Two cable tie wraps are very secure but I will gaffer on top too.

[kaman]

Looking good - hope it works.

[Max...]

Well, just back from a really awesome week on the Dart. Sibbing paradise with six days out of seven on the boat and some great trips round to Brixham and the coves beyond Blackpool Sands, 122 nm and 22 hrs on the boat, worked out around 3 litres per hour total. Aerotec was a hoot in the waves and coped with everything including some horrible confused water - quite a blowy start to the week with wind over tide but yesterday in particular was glorious.

The spray deflector worked well, stopped any upwards splashing and deflected it out the back, stayed on the whole week with just the two cable ties.

One other thing I bought to try out was one of these pads:

extra thick black kneeler handy mat high density closed cell foam | eBay

As a kneeling pad for piloting the SIB a la RNLI Y/D Class style, definitely the best way in the rough stuff - really good value and very thick at 2". Worked great - very handy for padding the Pelicase when used as a seat too.

[Fenlander]

Good that you had a successful week Max.

And the spray mod works... excellent. Did you try it with the raising block removed?

[Max...]

Cheers David, it was really wonderful on the Dart, very sad to leave.

No, kept the block as that is definitely still needed. The plate worked well but TBH it still splashes like crazy, just out back rather than up!