The Bucket Foundry

[Frits Overmars]

The three exhausts will be interesting, not sure if I should have a three into one or just three pipes?

If you want to run the kind of revs that the cylinder is capable of, the pipes will be so short than you can't possibly join the headers.
You could join the tailpipes into one silencer .

[ken seeber]

Looks like it's a sliding cylinder day. OK, been a bit busy of late with karting, work and interstate visitors. That’s history so now back into it, no more excuses.

One of the next things is the crankcases for the sliding cylinder. To make things easy (I thought) we are using an old set of IAME reed valve crankcases. The actual deck height is pretty much the same as what is needed, but the face area is way too small for the size of the water jacket. So, the crankcases have been machined down and a thick plate will be welded to the top of each side, machined down to height and then drilled and tapped for the 6 mounting holes.

It’s a sort of race. The aim to get this thing running before we get to see a Ryger 70 hp power curve.

[Frits Overmars]

To make things easy (I thought) we are using an old set of IAME reed valve crankcases. The actual deck height is pretty much the same as what is needed, but the face area is way too small for the size of the water jacket. So, the crankcases have been machined down and a thick plate will be welded to the top of each side, machined down to height and then drilled and tapped for the 6 mounting holes.

There must be a reason you go through all this machining, welding, drilling and tapping instead of using Fletto's ready-made cases, but I can't think of one...

[Flettner]

If you want to run the kind of revs that the cylinder is capable of, the pipes will be so short than you can't possibly join the headers.
You could join the tailpipes into one silencer .

I wouldn't join the headers anyway, I was thinking the at the mid section. But you are right, three it is then!

[Flettner]

Looks like it's a sliding cylinder day. OK, been a bit busy of late with karting, work and interstate visitors. That’s history so now back into it, no more excuses.

One of the next things is the crankcases for the sliding cylinder. To make things easy (I thought) we are using an old set of IAME reed valve crankcases. The actual deck height is pretty much the same as what is needed, but the face area is way too small for the size of the water jacket. So, the crankcases have been machined down and a thick plate will be welded to the top of each side, machined down to height and then drilled and tapped for the 6 mounting holes.

It’s a sort of race. The aim to get this thing running before we get to see a Ryger 70 hp power curve.

I see on facebook Luc F says he can't make the FOS system work, we will have to show him Ken. We will make claims but show no evidence, that seems to work.
Luc F would do well to remember Ken Seeber had an FOS type cylinder working in the mid 70's. This new setup is much refined with throttleable transfers (and reduced exhaust duration at low speed, also a half shut off exhaust duct at low speed) . This will go a long way to fixing the problem Luc was having with his cylinder. Opps, thats just speculation, you will have to wait ( an eternity) for the patent to go through

[Flettner]

There must be a reason you go through all this machining, welding, drilling and tapping instead of using Fletto's ready-made cases, but I can't think of one...

Two different applications Frits, Ken wants to rip the kart world up, where as I'm more the trail rider. We need to put somthing up against the Ryger
Hey, if all goes well it WILL end up a bucket racer, 100cc and all. We will say 50ish HP, yah right

[ken seeber]

There must be a reason you go through all this machining, welding, drilling and tapping instead of using Fletto's ready-made cases, but I can't think of one...

Frits,

Thanks for the reminder and a reality check. No charge I hope . We have a few reasons to base the slider on a kart engine crankcase:

• External electric starters for kart engines are plentiful, engaging directly with the end of the crank, spinning at around 2k, making for easy initial starting and running set up.
• With the much higher trapped compression ratio at the low cylinder position, it will be a cinch to add some rotational inertia to smooth things, particularly at idle
• If it works, it’ll be really easy to mount on a kart, lots of frames kicking around.
• Similarly, I know a few dudes over here who have kart engine dynos, so a simple matter to slip on and test.
• Should the O rings leak or seep and there is the risk of water in the crankcase, it’s just so easy to invert and drain a light engine after running.
• On a small test stand, it’ll be easier to play with actuating mechanisms
• The crank 100 rod on the Ø50 crank I will be using has a Ø14 pin, the same as the piston we will be using. Currently Neil doesn’t have a 50 crank, plus his deck height is higher than what mine is being set up for. That’s ok though, as if he makes a 50 crank, he’ll just need a longer rod, not sure where this could come from, but I’m sure Hooser could find something to suit. That being the case and the actuation can be sorted, then what I have could be simply transplanted onto the Fletto ISO standard test crankcase. Then we can watch Fletto ride around his backyard, doing jumps and wheelies with a big smile across his face due to the great performance and easy rideability due to the very wide powerband.
• Being on a stand alone test frame, it’ll be easy to arrange a simple water pump set up and radiator.
• Actually it is a sort of therapy: thinking about it, sketches, into work the next day, making the next bit when I can, gradually watch it come together.
• It might be different if the man wasn’t 5400 km away with a whole lot of water in between.

As to taking over the karting world, I am not so sure. The karting controlling body over here has the imagination of a cockroach to anything other than what comes from Europe (Vortex, IAME and Rotax) so absolutely no reason to even bother. No, I think if it is good, then one might pursue other applications.

[F5 Dave]

Simple water pump. ie; the hose.

If you can afford the water around you way.

[husaberg]

9mm between fins and a short path from heat source to coolant

When I get home I'll find the doc and post it

Hope it's of some help

If I stop off at pub .......but I try to remember

Sent from my SC-01G using Tapatalk

I was sent this From Brian d marge
I have only had a quick peek but it looks very interesting.
(I have posted it elsewhere including ESE)
Air cooled tech ignore the extra valves and oiling.
https://www.dropbox.com/s/g83k5qveoa...ew%20.pdf?dl=0
https://www.dropbox.com/s/qumzhe8k27..._fins.pdf?dl=0

[Brian d marge]

Hope it is of use

sent for a divine source

[nasone32]

i'm joining the fos frenzy too.
very slowly...
silicate hardened with co2
this is a tribute to Frits

[Flettner]

i'm joining the fos frenzy too.
very slowly...
silicate hardened with co2
this is a tribute to Frits

Please, show us as you go, we would be very interested. As I'm sure Frits is.
I've got lots of work real in the way, a good thing, but it is hurting my FOS progress.
I think Ken will be first with his FOS at this rate.

[Flettner]

This sliding cylinder system should work on a standard cylinder also. I would like to try this but having the port base's fixed and the port tops vairable (sliding cylinder), all the way down to the transfers shutting off, Throttleable. Should make for a very wide power curve, good for an old trail rider like me that can't be bothered changing down. And yet still produce a high top end power and still a small light weight engine.

[Frits Overmars]

i'm joining the fos frenzy too. very slowly... silicate hardened with co2. this is a tribute to Frits.

I feel honored, Nasone .

This sliding cylinder system should work on a standard cylinder also. I would like to try this but having the port base's fixed and the port tops vairable (sliding cylinder), all the way down to the transfers shutting off, Throttleable. Should make for a very wide power curve, good for an old trail rider like me that can't be bothered changing down. An yet still produce a high top end power and still a small light weight engine.

+1

[husaberg]

this is a tribute to Frits

Its a very good likeness


Seriously though very nice work.