If you like boats and machine work, you should really see this thread.

[maxwedge]

This guy starts out with just your ordinary complete refurbishing of the hull, including, splitting the hull and deck, total floor replacement, adding a pad, etc... I think that whole process maybe took him a week or two...and then around page 14 or so, he starts machining his own supercharger from scratch! http://www.sidewinder-boats.com/portal/windertalk/showthread.php?t=2915











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[maxwedge]

Gotta be a registered member to view the images. :thumbsdown

I forgot about that, but you can always just sign up, it's free, takes a minute, coop won't mind, plus you can see what us Sidewinder retards are up to

Lets see if I can Hotlink a pic or two, but they're gonna be huge

One of the stators

 

[RiverDave]

Instead of trying to make 500 people sign up on a sidewinder website..

Wouldn't it be easier to just get the author of the thread to post the pics over here? Or can you post them?

RD

 

[Racey]

Instead of trying to make 500 people sign up on a sidewinder website..

Wouldn't it be easier to just get the author of the thread to post the pics over here? Or can you post them?

RD

:thumbsup

 

[maxwedge]

I'm very busy...umm...doing stuff and things...and I don't have time for this as far as you know.

But I guess I'll see what I can do anyway. Give me a few minutes here...

 

[Go-Fly]

Hello to all, I'm Go-Fly from the Sidewinder forum. I was asked to come over and post some pics of my rebuild and supercharger that I'm building for an I6 Merc. I don't know what you would like to see. I can just post pics and let you ask question or you let me know. I'm posting a pic of the hull pad as a test.:champagne:

 

[Zaairman]

Looks good Go-Fly, now keep em coming. :thumbsup

 

[Go-Fly]

Good to see you here Z-Man. Here are some pics of the rotor housings and how they were made. There are four total and they inner lock to make a tube. The center will hold a bearing on each housing.

 

[Outlaw]

I can tell already this is going to be a cool thread:thumbsup

 

[Go-Fly]

Here's some pics of the top air chamber of the supercharger. It is also the mount to the motor. The SC will mount where the dist was and run off the flywheel. You can see in one of the pics how the four rotor housing stack up to make a tube.

 

[RiverDave]

Go fly personally I'm interested in the whole thing.. What you did to the boat as well as the supercharger. (more interested in the supercharger though).

How does a supercharger on an outboard work anyways? Wouldn't it just blow through and not build any boost?

RD

 

[Go-Fly]

Go fly personally I'm interested in the whole thing.. What you did to the boat as well as the supercharger. (more interested in the supercharger though).

How does a supercharger on an outboard work anyways? Wouldn't it just blow through and not build any boost?

RD

That is what will happen. Like having a hole in a bucket. I have found a solution for that and I will be sharing it down the line. Spent a lot of time over at Scream and Fly being told what not to do. It left only one thing to try and it worked. I did a small scale test and it worked too. So now I want to get a full size motor to run with it.

 

[Racey]

Always nice to see some old school machining, rotary table for the win! this will be a good thread! let it get a few more pics to catch some traffic in the lounge then bump it over to the river customs forum! :thumbsup

I would guess that in supercharging a two stroke you would have to do some major port relocation, moving both ports almost all the way to the bottom of the stroke, especially the exhaust? the forced induction would basically 'blow' the exhaust out at the bottom and as the piston cam back up on compression and covered the exhaust port, with the intake port still exposed to allow boost air into the cylinder....???

 

[RiverDave]

Racey I'll take some pics of a supercharged 2 stroke engine design that my pops did for fun.. Kind of a neat little deal. I've always wanted to build the complete engine.

RD

 

[Go-Fly]

Always nice to see some old school machining, rotary table for the win! this will be a good thread! let it get a few more pics to catch some traffic in the lounge then bump it over to the river customs forum! :thumbsup

I would guess that in supercharging a two stroke you would have to do some major port relocation, moving both ports almost all the way to the bottom of the stroke, especially the exhaust? the forced induction would basically 'blow' the exhaust out at the bottom and as the piston cam back up on compression and covered the exhaust port, with the intake port still exposed to allow boost air into the cylinder....???

There will be no new port timing. There is just one more moving part on the exhaust that needs to be added to make it work.arty:

 

[Crazyhippy]

As long as the intake is slightly higher (later closing) than the exhaust, it will see some increase in cyl pressure. Will alot of the air flow out the exhaust? yes it will, think of it as a smog pump:skull

"The Solution to Pollution, is Dilution"

 

[Go-Fly]

As long as the intake is slightly higher (later closing) than the exhaust, it will see some increase in cyl pressure. Will alot of the air flow out the exhaust? yes it will, think of it as a smog pump:skull

"The Solution to Pollution, is Dilution"

The answer is not in the port timing.

 

[maxwedge]

Very cool of you to post over here Go Fly. I'm sure everybody appreciates it. Like I said, there are quite a few machinists and gearheads hanging out over here. I do have a couple questions myself. I'm not very familiar with how an axial flow compressor works, but I'm sort of assuming it's similar to the compressor section of a jet turbine, or am I way off base here? Also are you machining the rotors yourself as well? Seems like they would need to be very precisely formed and well balanced to stay together at 27,000 RPM?

 

[SuperDave013]

looks like this is going to be a nice thead. Go-fly, thanks for taking the time to come over and post. Growing up on a lake in Indiana Sidewinders, Bajas and Checkmates were all over. Just don't see many out west.

Nice machine work but feel free to post more on the boat too.

 

[Cigalert]

Interesting stuff. If you got the time and pics load'em up. These are my favorite threads.

 

[Tom Brown]

Welcome, Go-Fly. I'm excited to see your project. :thumbsup

JBB will be watching with particular interest because he's considering hanging a forced induction I6 on his Jeep.

 

[Go-Fly]

Very cool of you to post over here Go Fly. I'm sure everybody appreciates it. Like I said, there are quite a few machinists and gearheads hanging out over here. I do have a couple questions myself. I'm not very familiar with how an axial flow compressor works, but I'm sort of assuming it's similar to the compressor section of a jet turbine, or am I way off base here? Also are you machining the rotors yourself as well? Seems like they would need to be very precisely formed and well balanced to stay together at 27,000 RPM?

No problem Max thanks for the invite. The axial SC is like a jet turbine in that it pushes air from one fan to the next to builds pressure. In the small ones like mine I don't have stators, just rotors. I wish I could say that I'm making the rotors too but, there comes a time when you have to pass it on. They were made out of carbon fiber in a mold. Then they were trimed and balanced at 54,000 RPMs. There is .001 clearance from the blade to the housing. That's not much room for anything to move. I had to make six housing to get four. They had to line up at 0+ - .000. Here are some more pics. It showes you all six pieces bolted together and how it mounts to the motor. I had more alum on the floor then in the SC in the end.

 

[460]

Thats trick. Welcome to the site and keep the pics comming

 

[Racey]

This will be very interesting to see! :thumbsup

2 stroke detroit diesels which are supercharged and turbocharged use an exhaust valve to work properly, basically as the piston gets almost to the bottom of the power the valve which is at the top in the combustion chamber (like a conventional engine) opens, while the intake port is exposed at the bottom of the cylinder, the superchargers force the fresh air in which forces the exhaust out the top through the valve.

Can't wait to see how you do it for the 2 stroke gas motor!

 

[YoPengo]

Welcome and very bitchen. :thumbsup

 

[RiverDave]

I'm really looking forward to seeing this as well.. I have absolutely no understanding of how this compressor works though.

How did you do the tooling on the mold for the carbon fiber turbines?

rD

 

[Yellowboat]

I think you are going to fit in just fine here :thumbsup

 

[Sun burners]

NICE!

 

[Go-Fly]

Well lets put the supercharger on hold for awhile. The motor is going to be fuel injected. So I had to build a custom intake manifold. There are six injector in all. Only three will fire at lower RPMs. There will be six coils and each one can fire at it's own advance. There will be a thermalcouple on each spark plug to feed back to the ECU. There are going to be 24 inputs to the ECU on each rotation. I have applied for a patent on the part that makes this all works. If it comes back that it already has been done then I'll share my idea. Until then we will just call it the black box. I hope you understand.

Here are some pics of the manifold. Have two ports done

 

[Go-Fly]

More pics of the manifold. The third port is done and I'm starting to put in the bosses that hold the fuel injector.

 

[Go-Fly]

This is the manifold welded up and ready to machine in the holes for the fuel injectors. The injectors have to spray down the intakes and be spaced for the fuel rail to fit. Next is the throttle body.

 

[Go-Fly]

Now that we have the supercharger and manifold started why not show the throttle body. I bought a throttle body off of a Ford 4.6l to get the butterfly, shaft, seals and the throttle position sensor. I installed new bearings. I welded two blocks on each side of it and turned it out to look like a throttle body.

 

[Deleted Account]

Keep the pics coming...

 

[Go-Fly]

The rest of the pics of the throttle body

 

[mbrown2]

Cool to see the throttle body go from a block of nothing to something...good stuff...

 

[Outlaw]

Go -Fly, what do you do for a living? I applaud your ambition
toward this project:bowdown:

 

[TBI]

This thread rocks! :thumbsup

 

[Go-Fly]

Go -Fly, what do you do for a living? I applaud your ambition
toward this project:bowdown:

I owed my own machine and fab shop, had 16k sf and 60 emplyoees. I sold it at the peak. Now I work out of my home shop and help set up factories and help bring new products to market. I have done proto type work for 30 years now.

 

[TBI]

BUMP!

 

[Go-Fly]

Here are some more pics of the sprockets that will run the supercharger. It will just fit. The big one, that goes on the flywheel, still needs to be machined. This weekend I'll turn off the spocks and make it fit. I thought I would use the bolts that hold the magnets down, to hold down the sprocket. You can also see the outlet of the SC and how it clamps on.

 

[Tom Brown]

This thread is fantastic! Amazing work, Go-Fly.

This has to be the best thread on the site, by far, for a long time. I'm sure everyone is enjoying it, except rfountain58 but the only thing he likes is hating Dave.

 

[Go-Fly]

Oh, one more thing. This all has to fit inside the stock cowel. That is what makes it so hard. I will cut the 90 elbow on the manifold and rotate the top part so it lines up with the throttle body. I'll connect the two with a hose.

 

[WTRR]

This is a very cool thread.

 

[Deleted Account]

Oh, one more thing. This all has to fit inside the stock cowel. That is what makes it so hard. I will cut the 90 elbow on the manifold and rotate the top part so it lines up with the throttle body. I'll connect the two with a hose.

Sleeper for sure.

 

[RiverDave]

Go-Fly, I agree with Tom Brown, this is one of the best, if not the best thread on this site right now! I appreciate you taking the time to post it!

RD

 

[Go-Fly]

I think you are up to speed with the motor so far. I'll do some work on it this weekend and post some more pics.

SOOO, lets move on to the hull pad. The hull had a hook in it. I had to fill in the hook and build a hull pad. I made the molds right on the hull by gluing poly foam right to it with white glue. I set up up two wood 2x2 that were parallel and square to the hull. This is how I trimed the foam square.

 

[Classic Daycruiser]

Wow.

What is this "Hull pad" your building? Is it part of the boat, or is it a mold?

Great project. Be sure to check in with pictures.:thumbsup:thumbsup

 

[Go-Fly]

Wow.

What is this "Hull pad" your building? Is it part of the boat, or is it a mold?

Great project. Be sure to check in with pictures.:thumbsup:thumbsup

Well this is my first hull pad. This is my first small vee hull, all my other boats were flat bottoms. So this is what I know, a Sidewinder has a round bottom transom. At high speeds they chine walk. The hull pad gives you a flat surface to ride up on. It is also a solid part of the hull. I made the mold so I could get the shape I wanted. Here are some more pics

 

[Classic Daycruiser]

At what speed are you not planning a chine walking?

I'll be sitting in the front row watching this one with RD

I had a friend growing up who had a sidewinder with a 115hp merc. Very fun boat under ideal conditions.

 

[Zaairman]

The 16's start to chine walk at about 70-75...