Messages

271

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 25, 2011, 04:19:59 PM »

Any reason why you decided to make your carbs rather than to use something like a walbro off the shelf?

Walbro would be way!!!!!!  to big. Alot of the real small RC carbs are made to flow nitro. Also couldn't find one that looked like a holley.

272

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 24, 2011, 11:37:10 PM »

Ok, so now you need 2 carbs. And what are you going to use for a belt ?
Just put it on as a dummy, no rotors necessary (unless you got plans for em')

I made 3 carbs a few weeks ago. It will use a 1/2 inch wide MXL belt. I have 3 lobe rotors planned. It will be no dummy.

273

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 24, 2011, 10:27:49 PM »

Awesome stuff, Steve. Work like that makes you want a trunnion table, don't it!

I'll take one of everything please!!

274

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 24, 2011, 09:44:53 PM »

I decided to have some fun today and make a pattern for some thing I have been thinking of casting.

I used some lexan that was given to me. I pinned two pieces together so I can cast in sand.

Started roughing it out with a 1/4 inch cutter.








Then I made some horizontal passes with a 1/8 inch ball nose. Can see more detail coming out.






Then vertical passes .006 on center for a few hours.






Then to the manual mill to remove the extra off the bottom

275

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 21, 2011, 05:48:48 PM »

SNOW DAY!!!!!!!!!!!!!!!!!!!!!!!


Finished my pistons on this fine day off.
I made a few spares in case I made a boo boo. All are useable. They were made from 7075 if anybody is wondering. I had a piece so I used it but 6061 would have been fine also.





I also had time to make the motor mount posts. They are the same as the Peewee mounts. I think I detailed how they were made in that thread.

276

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 15, 2011, 01:52:54 PM »

Made a few more parts. I couldn't find a cool looking oil drain screw so i made one.  I didn't want just a plain hex head screw.




I also made a PCV valve. I'm not to sure it will do anything but what the heck. It is a stem with a cap. In the stem is a 1/8 inch ball and a spring to help seal when the crank case goes negitive.

277

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 12, 2011, 05:25:06 PM »

Thanks Russ!

278

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 12, 2011, 03:24:04 PM »

Scratch the crankshaft off the list. I made the main bearings and installed the shaft. It is a bit snug but it will seat itself in no time. There's going to be a party tonight.

279

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 06, 2011, 06:21:25 PM »

Can't wait to see a video of it running.

You have no idea!!

280

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: February 06, 2011, 03:39:22 PM »

Scratch carburetor off the list. Thanks to Mr. Bob Farr I was able to get a piece of brass to make the barrels. Everything is made except the throttle lever and the gaskets. I think I'm just going to wait until everything is done and make gaskets for everything all at one time.

The screw to the right adjusts the fuel and is adjusted at full throttle. The screw in the center will adjust the air bleed to lean out at idle.