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  #16  
Old 01-25-2010, 06:54 PM
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looks awesome cant wait to see it done
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  #17  
Old 01-25-2010, 07:06 PM
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looks awesome cant wait to see it done
X2
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  #18  
Old 01-25-2010, 10:23 PM
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Damn, I wish I was smart. Looks like a really cool project. Keep us posted.
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  #19  
Old 01-27-2010, 05:44 PM
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How long roughly do you estimate the build time will be on this engine? I know you do it all manually, just out of curiosity cause I'm in my 2nd semester majoring in mechanical engineering tech and just curious how long it would take to make a relatively similar engine doing it manually.

Another excellent project Steve. By the way, why hasn't someone made a 1/8 scale multi cylinder engine yet? I mean of course everything needs to be even more precise, but is there something that can't be done on such a scale? Just wondering why someone hasn't whipped up a micro 4-6- or 8 banger. Thanks,

Tom.
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  #20  
Old 01-27-2010, 06:08 PM
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Originally Posted by NitroheadZ28 View Post
How long roughly do you estimate the build time will be on this engine?

By the way, why hasn't someone made a 1/8 scale multi cylinder engine yet?

Tom.
Build time on these engines can be anywhere from 500 - 2500 hours depending on the parts count.

he problem with going small is there are 2 things that scale poorly. One is mass. When you scale down 8 times you reduce its mass by 64X. Trying to get a motor to idle when the crankshaft weighs the same as a paperclip is very difficult. Thats why most small engines have large flywheels or high idle RPM.

The other thing that does not scale is electricity. Jim Moyer's 1/6 chevy has spark plugs with a #5 thread. Thay are extremely small and controlling the ignition thru the distributor and the spark plugs in a motor that small is very difficult. The spark in the Peewee when a plug fouls can jump 1/2 inch to the fouled plug.

Can it be done, Yes! Most guys wont go thru the hassle of tweeking things and making them right. They want to follow a set of prints and run the engine. Fact of the matter is simply, the bigger the easier.

Most v8's that small are glow ignition and made to scream in an airplane!
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  #21  
Old 01-27-2010, 06:11 PM
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Had a major setback yesterday. I was modifying the cylinder block and grabbed the wrong cutter. Cut my way from inside the block right thru the side. Now the coolant wont stay in the motor because of the big hole in the side. Starting a new piece tomorrow. Should have pics by early next week!
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  #22  
Old 01-27-2010, 10:56 PM
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Um that's what I would call a
Happy Accident

I usually save what I can, and try not to do again

I seem to remember awhile back someone did a Ferrari that was in 1 of the R/C magazines

anyone remember that ?
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  #23  
Old 01-28-2010, 12:01 AM
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You do truly amazing work, regardless of the cylinder hole, lol.
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  #24  
Old 01-28-2010, 11:33 AM
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well.... i guess cant wait to see the crank and rods and pistons in it.
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  #25  
Old 01-28-2010, 11:41 AM
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Subscribed!
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  #26  
Old 01-28-2010, 01:58 PM
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well.... i guess cant wait to see the crank and rods and pistons in it.

Why didn't you say so. I wont be using these pistons. The new pistons will have cast iron rings.
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  #27  
Old 01-28-2010, 02:20 PM
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Simply amazing .....
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  #28  
Old 01-28-2010, 03:17 PM
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Is that crank a single piece, or are the bearing journals pressed in? Either way it's impressive
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  #29  
Old 01-28-2010, 04:41 PM
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That's sooo pretty
Me likey machined parts
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  #30  
Old 01-28-2010, 05:33 PM
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Quote:
Originally Posted by Old Busted Hotness View Post
Is that crank a single piece, or are the bearing journals pressed in? Either way it's impressive

It is pressed up.
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