Hello drawing up a head for the pilot
2d first
speed

http://pilotodyssey.com/speedchaser.htm

here is the dome 49cc cnc machining

Part 1


Part 2



Thanks For Looking
SpeedChaser

12201-HE0-000 CYLINDER HEAD

the last pic for 2d will start 3d soon

Is looking good, like that hole spacing Honda invented?

Look at the water port layout

Now going 3d

Now time to work on the center dome

Next

Drawing the dome profile 2d the in to 3d

SWEET!

Once again you have out done yourself...

I have the bowl and squish dimensions if it would be easier for you to work with?

Once drawn can you use the cad to cc the volume of the dome?

The squish clearance will need adjusted if we go with using the head gasket, having owned both heads one with O rings and one with the gasket I lean towards using the gasket, the O rings can be a pain in the ass keeping in place while installing, sealing them was not a problem on my engines but I lapped the top of the cylinders before installing to ensure they were flat, if they are not flat and the O ring on the dome sees ANY of the flame it burns up the O ring, the gasket is more forgiving ...

Very Nice!

Just curious... why do you make a positive of the dome rather than measuring off of it directly?

Hello the reason was that I did want to scribe line in the dome it self
And this is the the old way of doing things
Yes I could of gust put in my cnc mill and use my renshaw probe
But not every body has one.
thank for looking SpeedChaser

is there a way of machining the dome with a coventional machine. i want to make a head for the fl250 but the only way i could think about maching out a dome is by grinding out a tool with a radias. o i also need to draw up a blueprint for the head.

You could cut the dome radius on a manual lathe with a radius cutting attachment. It would replace the tool post. All of them that I have seen are typically home made but there are some commercially made units available.

yep that would work
have a look
www.bedair.org/Ball/ball.html

how to make

speed

Does anybody have a print for water cooled head. I think i could draw up my own. but i would be more comfortable using something that is known to work.I wonder if its worth buying a tool or making a tool. I might be able to borrow a tracer.

Speedchaser, did you ever cut any of these? I was thinking of making some, but would rather buy one from you!

Any updates?

I would buy one for the backup Engine..........

Count me in on one also

Me too-I would love to see this happen as well

Hello no as of yet I have not cut one . the time gose so fast around hear lately.

Will have some time to cut the out side of the head late this week .

Will have to get with Hoser on the bowl and squish dimensions.

Will post back soon

Thanks SpeeChaser

cut some parts today

Looks great I assume the dome is next?

with a brush finish

will try to get to the dome this weekend
my have some ready to go out late next week
thanks for looking
Speedchaser

Nice..

Can we get them personalized with writing of our choice on top? I would like PilotOdyssey.com on mine