The Bucket Foundry

[mr bucketracer]

apart from Flettner have any of you talk ups cast parts for a engine yet

[husaberg]

I could never remember what these were called bloody handy little things
profile or contor gauge for those who struggle to think inside out




Contour Gauge - 125mm NZ$19.21
http://www.carbatec.co.nz/profile-ma...973djfm2vn06p1

[WilDun]

apart from Flettner have any of you talk ups cast parts for a engine yet

No, not yet but I've got my furnace fired and I'm making up all the tools required for the foundry, then it'll be patternmaking (using our resident maestro's advice).
I won't be casting many parts for bike engines for a while (no orders you see) but I'll be casting something for starters to get a feel for it all.

(I mean when you have a new bike and go on a new track you don't go out and set a track record on the first lap - or tenth lap, or even do well, do you?).

Looks like we have been steered back on to bucket/foundries again without noticing - thanks!

So I guess till then, I'll just have to remain a 'talk up" - but I'm quite happy with my slow progress, ok?

[mr bucketracer]

No, not yet but I've got my furnace fired and I'm making up all the tools required for the foundry, then it'll be patternmaking (using our resident maestro's advice).
I won't be casting many parts for bike engines for a while (no orders you see) but I'll be casting something for starters to get a feel for it all.

(I mean when you have a new bike and go on a new track you don't go out and set a track record on the first lap - or tenth lap, or even do well, do you?).

Looks like we have been steered back on to bucket/foundries again without noticing - thanks!

So I guess till then, I'll just have to remain a 'talk up" - but I'm quite happy with my slow progress, ok?

lap record first lap yer ?? lol , i'm going to get my furnace going in the next 6 months , i want to build a 100 twin 2 stroke so will see how i go . mean while i have to finsh 3 projects of by then 2 new bucket racers and a f3 bike

[WilDun]

i want to build a 100 twin 2 stroke so will see how i go . mean while i have to finsh 3 projects of by then 2 new bucket racers and a f3 bike

You must be going for the record then? - better start tonight, guess you won't be going out much for a while!

Any of you guys been watching the IOM.TT.?

[mr bucketracer]

You must be going for the record then? - better start tonight, guess you won't be going out much for a while!

Any of you guys been watching the IOM.TT.?

i never go out even in my teens , just a home boy lol . when i start somthing it happens fast and become a obsession )-; i need a hoilday . yes your son is winning all the race's there (-; ... in a race im stuffed in the second lap so i need a fast first and second lap he he

[husaberg]

You must be going for the record then? - better start tonight, guess you won't be going out much for a while!

Any of you guys been watching the IOM.TT.?

What layout Scott tandem or Vee
There is a great deal of parts available for 50cc size bits at great prices..

[mr bucketracer]

What layout Scott tandem or Vee
There is a great deal of parts available for 50cc size bits at great prices..

i think a v but going to make it so you can bolt it together in more than 1 way

[husaberg]

i think a v but going to make it so you can bolt it together in more than 1 way

did you see the sandwich case I posted ages ago...........
disk valve then too

[mr bucketracer]

did you see the sandwich case I posted ages ago...........
disk valve then too

i cant remember

[husaberg]

i cant remember

The design of the KR250 differs from the Rotax in that it seems to have a superior outrigger design.
You have a CNC, but if you were to make it out of thinish plate you could holesaw the rough details and fine finish with the mill.
made like a sandwich.

these are the Aprila drawings
http://www.kiwibiker.co.nz/forums/at...6&d=1388531776
http://www.kiwibiker.co.nz/forums/at...7&d=1388531776

Kawasaki

http://www.kiwibiker.co.nz/forums/at...9&d=1384668836

Armstrong
http://www.kiwibiker.co.nz/forums/at...2&d=1393712709

[mr bucketracer]

i like the pic , i want to cast somthing like that but easyer just to machine it out )-;

[Flettner]

Are you likely to have a CV joint or something at the end of each crank in order to "splay" (for want of a better word) the axes of each prop shaft, in order to prevent the prop tips touching? as in the helicopter?

I have seen videos of that helicopter being pubicly displayed and flown in Berlin (I think) by Hanna Reitsch
.
Pity that war ever happened - it probably wiped out a lot of good brains on all sides!
All very interesting.

BTW, Have you seen the fast gyro/trike by the Dutch company (fast both on the road and in the air)? - extremely impressive! - again HUSA will no doubt do the honours!
http://pal-v.com/ (Video under Press/Media.)

The engine needs to have the cranks joined, a gear train up the side of the engine. If I use four gears, the two middle gears will counter rotate and if I splay these gears at 12 degrees each ( away from centre ) the props will not hit each other. I have built gears for this already, somewhere down in the storage cow shed! I'll have to go and dig them up ( or out as the case may be )

Dutch gyro, I tend to think either a gyro OR a car not two in one, too many compromises. In my opinion.

Speaking of roadable gyro's I've been building a trailer for mine these last few days, will double as a bike trailer as well.

[Flettner]

Finally found time to cut the rotary valve inlet on the 360 engine.

[WilDun]

[QUOTE=Flettner;1130730239]Finally found time to cut the rotary valve inlet on the 360 engine.
[QUOTE]

Ok, so Husa was too busy on other stuff and didn't come to the party! so I guess I need to learn how to do photos etc by myself!

Seems the 360 is going ok - I see the coolant still on the machined casting!

The cranks on the opposed piston engine are obviously going to be counter rotating then?
Maybe I'm a little dim but as I see it, you will have a train of 4 shallow angle bevel gears interacting (two in line with the cranks and the "idlers" tilted at 12deg to the crankshaft axis, each being driven by the adjacent crank and also driving each other (contra rotating). these will then act both as idlers to keep the cranks synchronized and also as prop driving gears, which obviously will keep the prop blades synchronized - have I got that right?
I Guess they can't really be called idlers anymore!

Is it difficult to cut these shallow angle bevel gears or did you have them cut elswhere?

Guess FLETTNER (The other Flettner ) used a similar principle.

Sorry for being so bloody nosey, but I find it all very interesting!

Will.