The Bucket Foundry

[husaberg]

Willy, it is a water brake style absorber. In principle the design has been around for ages, eg Heenan & Froude ( you should know this, from the old mother country ).

I've been around for ages too; my first dyno brake was a Heenan & Froude. The peculiarity about it was that the amount of braking was controlled by two slides moving radially in- or outward between the pump rotor and pump stator. You had to move those slides by turning a hand wheel on the penduling pump housing. But as soon as you laid a hand on this wheel, the pump housing moved a little and the braking torque indicator hand moved as well - not a great way to achieve accuracy.
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Air Paddle wheel Dyno

a bloody long length of chain in some exhaust tube as it whips about a couple of feet
Plus non hi tensile bolts in the plywood paddles.
A willing helper to read the tacho that was mounted a little too close to the fans for comfort

[WilDun]

Well, I've learnt quite a lot in the space of two or three posts!
I was totally interested in bikes and engines (in the "Oul Country") but information on dynos was a little sparse and people with an interest in this stuff in my area was even more sparse! (all bloody farming, cows and profits - very little else!).
Having said that though, there was a lot of interest in bikes there too, just not enough for me! - it was really much the same in NZ when I came here in 1966 ...... 51 years ago!
But then, late on in my life, computers and the Bucket Racing guys have popped up, - I have learnt more in the last 3 years or so than I ever could have imagined and I have at least managed to build a furnace and done a couple of pours just by being inspired by you guys. its something I have always wanted to do and thought it would never happen - many thanks.

Next thing is to see some of Neil's achievements (I have seen one of his super lightweight cylinder barrels first hand and would like to see more). Would be nice to call in and see Ken's stuff too, but that's one helluva long way away!

I did have the pleasure of having a quick chat with Bert Munro back around 1970, I liked his style, he was like me in many ways (yeah right - like me X 100 ! )

[Flettner]

Back to foundry stuff, ready to mold up some more 360 cylinders with mods made. Wider exhaust, larger power valve boss and some new lugs for the injectors

[WilDun]

Back to foundry stuff, ready to mold up some more 360 cylinders with mods made. Wider exhaust, larger power valve boss and some new lugs for the injectors

Will you be using 4 injectors or are the lugs just provided for possible future experimental stuff? - are you going to do the barrel castings yourself?

UPDATE - I see you are doing the description in ESE, (I always look at the foundry thread first).

[guyhockley]

Air Paddle wheel Dyno

a bloody long length of chain in some exhaust tube as it whips about a couple of feet
Plus non hi tensile bolts in the plywood paddles.
A willing helper to read the tacho that was mounted a little too close to the fans for comfort

Gustave Eiffel, of Eiffel Tower fame, was involved in early aviation development and he came up with a wooden plank dyno for aero engines (methode de barreau), including a formula for actually measuring power/torque. Still used today by some french flyers.
http://airdeglisse.free.fr/thread.ph...176&fid=&cat=2

[guyhockley]

Googling "wood bar dyno" should find some results in english.

[husaberg]

Gustave Eiffel, of Eiffel Tower fame, was involved in early aviation development and he came up with a wooden plank dyno for aero engines (methode de barreau), including a formula for actually measuring power/torque. Still used today by some french flyers.
http://airdeglisse.free.fr/thread.ph...176&fid=&cat=2

It mentions the use of a formula in the book it was suposed to be quite accurate for a rudimentry device.

[Flettner]

Here we go again.

[Flettner]

Something else I find on my pattern bench.

[husaberg]

Something else I find on my pattern bench.

Red , Did they come from Santa?

[Flettner]

Packing sand mold, wire is to poke holes through the sand to facilitate CO2 gassing. After each segment is hardened, spacers are removed to allow for the next segment to be packed. Hardened sand segments will not stick to the next part being packed and hardened.

[Flettner]

Packing a segment, runner and riser installed, removing the last segment.

[WilDun]

Packing a segment, runner and riser installed, removing the last segment.

Looks like you are fully sold on the silicate/CO2 moulding process now and I guess it does make sense.
Will you still be casting the barrels in LM13 alloy as before - are you finding it is still the best for the Nikasil bore plating?
Think I mentioned before somewhere that I was impressed with the light weight of your cylinders, but I guess I'm comparing them with the weight of the cylinder barrels of the distant past that I was used to! - hard to imagine they used to make them in cast iron!

The red "something else" things look like a collection of barrel patterns (with coreprints) and maybe some cores and coreboxes for something bigger, the cylinder pattern has a lot of small protrusions (bosses?) which are a bit bewildering though!

[husaberg]

The red "something else" things look like a collection of barrel patterns (with coreprints) and maybe some cores and coreboxes for something bigger, the cylinder pattern has a lot of small protrusions (bosses?) which are a bit bewildering though!

This might help Will

Thats that railway line Neil was talking about earlier in pic one.

[Frits Overmars]

That looks familiar like serious power in the making.
By the way, nice carpet.