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Engine almost done
One unit has a single low pickup and the other has 3 holes at 8mm dia.
May put a 4th one in there yet.
Both bullet points are cast epoxy with lots of CSM mixed in.
I made about 6 of them and smashed them on the anvil with a hammer.
Thay are very tough
Epoxy doesn't like being cast in a lump but even although it did tend to heat up it's still really tough with the glass mixed in.
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For a guy who claims to not like sanding, that is some stellar fairing. Very straight and clean
Lol,
Epoxy, the 10th wonder of the world.
Right after compounding interest and fractional Reserve Banking.
Adapter is done and the back on the leg now.
Water is tube stainless and has a locator ring welded to it that locks under the keeper at the adapter plate.
The jacketed tuner has a stand pipe at rear which ensures that there is water in contact with the base plate for more cooling.
There is also another small vent hole at front of tuner at very top to also help keep the cooling water in contact with the base.
The pan plate has no dump holes and a small drain into the water tube .
Overall this one piece works the same as a 2 piece, however in this case the poppet discharge goes to the leg via the tuner jacket.Attachment 496039Attachment 496040
The reassembly is done and the motor is going up the road to a Mechanics place for some work.
Oil gear is coming off then a general check, possible take the heads off for a look and the motor will be run up etc.
Put it on the scales today and the leg + power head weighed 161kg and the lower unit 23kgs
In American lingo thats a total of about 404lb.
The Jack plate got some much needed mods also
Its got a doubler plate each side with lugs that take the vertical load off the transom bolts and holes, and lower lugs that carry the vertical load of the jackplate.
This means that the transom bolts only provide clamping force and are not vertically loaded.
As I mentioned earlier Im hard on gear.Attachment 496674
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My young Fella has just finished school so Ive got cheap labor for a month or two.
Here he is bolting up the motor to a makeshift stand for transporting.
By some miracle we got the clamp hole pattern to line up first attempt.
Can you explain more of the jackplate mods
They have gone straight over my head sorry
In the case of this particular jack plate it came off a 3.0L Merc/ bullet hull that had seen some regular rough water use.Quote:
Originally Posted by spybot
Because of this the transom bolt holes in the jack plate mounting face, ( the face of the heavy Aluminium Angle sections) had worn oval(slotted).
It most likely that the fiberglass transom was soft and the bolts loosened allowing the engine and jack plate to slam up and down.
My fix was to lay 4x1/2 inch flat section Ali plates over the the top of the standard angle sections but make them longer at the upper and lower ends.
These plates are now what bolts against the transom.
Because these plates are longer at the top they extend above the top edge of the transom and this allows for a heavy angle section to be bolted on to form a lug that rests on top of the transom.
This means that the jack plate can hang on the transom without any transom bolts.
Not that you would do that.
The at the lower end of these long plates is a block of Ali plate that forms a 1/2inch lip that Carry's the weigh and shear loads of the jack plate so that none of the transom bolts or any of those countersunk hex screws take any vertical shear forces, other than the ones securing the upper and lower support blocks.
I'll add a cross section sketch after breakfast.
Green is the Mod
Attachment 496700
Today I decided that the mechanic was too busy and chances are Id drop the motor off there and not see it for a while so decided to kick it in the guts myself, which I did and it snarled at me.
It idled at a steady 140 deg F at the stat tell tale.
I need a pump dummy shaft kit so will leave the injection on for now.
Today for first start up I ran premix plus the injection.
Its a scary beast and with the dry tuner it has a harsh note.
Congrats! First fire is always a fun day. I hope we get to see and hear this beast under power one day. Truly a one of a kind build
Thanks
Ive worked with many different types of machines in my time but outboards would be the biggest vacuums of time ever conceived.
However its more or less done and today I ordered some rats and mice needed to finish the spare lower unit for it.
Also contacted Brucato about an ACU.
So now its back to the hull, the second biggest Vacuums of time ever conceived.
But there is one issue yet to be addressed with the motor and thats Pyros.
My one piece adapter has a pair of 1/8 pipe threaded holes tapped into the exhaust ports so these might be the perfect place for them.
Ive run pyros on diesels before and from memory they were 1/8 npt and 1/8 probe diameter.
On a Diesel these skinny probes can snap off and go through the Turbo but that's not applicable on an outboard.
On the Hull Im going to cut the new transom down from 25 to 20 inch.
The 25 inch seemed like a good idea at the time.
Ive got a heap of stainless embedded threads to epoxy into the Pad to secure the 1/8 galv steel pad runner.
These are made from 30mm long pieces of 16mm (5/8) s/s threaded bar with M10 tread tapped through them.
These anchor into the pad and allow counter sunk screws to hold the Pad runner.
Some will fit into the transom also.
These ones will hold the braces for the Pad /wing extension aft of the transom.
Haven't decided whether to make the boat a left hand drive or center steer.
The 225hp will start out on this current hull but it will probably end up on an offshore boat Im planning.
But thats another story.
I can relate on many levels. It takes what it takes, it’s not done until it’s done and if it was easy everyone would do it. Those three remarks are frequently voiced on my projects. In the end we have never regretted building things “too good” but in the early years there was plenty of frustrations from not building things good enough.
reminds me of an old saying “the sweetness of low price is forgotten long after the bitterness of poor quality remains” I don’t know who said this but there was an old magazine cut out of this hanging in my fathers work shop.
Here is a milestone Photo of my engine and also a photo of my young fella in his new Clubman class race boat.
Its a 30hp class that we are getting into
The Hull is open, Vees, flatties, tunnels, anything
The motors are std 2 cylinder 30hp or 3 cylinder 25hp, standard midsection, coned lowers with Low water pickups allowed.
This one with a 19 inch prop gets along at 45MPH gps and has a 21 inch prop for lighter drivers.
As a kid id see these boats racing on the lake and dreamed of having one.
A lifetime later I got one.
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Sure is pretty ProMax!
Damn, id rather have one that looked like it would tear your arm off if touched.Quote:
Originally Posted by tnelsmn
I got sidetracked by another project that was suppose to be a weekend job.
Spent a few months on it.
It's a Cyclone rx1950 gen3 it think.
Almost done.
Australian boat used for skiing and ski racing through the 80s and 90s.
Probably faster than my sidewinder but not a boat I'd push hard in a big sea.
I'm almost ready to get back onto the sidewinder project and really looking forward to it
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Havent had much seat time in this boat but already know which boat id rather be driving heading into a hole shot buoy at 70mph
Id rather be in a Tank of a Sidewinder.