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  #256  
Old 01-28-2011, 02:53 PM
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v8chris v8chris is offline
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Nice
What power output are you hoping for?
Anymore Updates?
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  #257  
Old 01-28-2011, 04:37 PM
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stevehuckss396 stevehuckss396 is offline
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Originally Posted by v8chris View Post
Nice
What power output are you hoping for?
Anymore Updates?
I don't have any way of measuring output.

Nothing further after the carb. Hope to make a piece or 2 this weekend.
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  #258  
Old 01-30-2011, 05:08 PM
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stevehuckss396 stevehuckss396 is offline
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Made a few carb parts today

Air bleed adjust screw




Fuel adjusment screw





Fuel fitting





Finished the machine work on the rear float bowls by adding the fuel passages.

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  #259  
Old 01-30-2011, 05:21 PM
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trucker47 trucker47 is offline
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awsome! by the way how tight are your tolerances?

Chris
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  #260  
Old 01-30-2011, 05:53 PM
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awsome! by the way how tight are your tolerances?

Chris
Which one's?

Most are loose but crankshaft and pistons need to be inside a thousand of an inch. All depends.
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  #261  
Old 01-30-2011, 06:26 PM
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the ones for i geuss non-internal component like the carb you are working on, for example how close the size of the carb needle needs to be to real size
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  #262  
Old 01-30-2011, 06:57 PM
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Originally Posted by trucker47 View Post
the ones for i geuss non-internal component like the carb you are working on, for example how close the size of the carb needle needs to be to real size

This carb is just like a drum style RC carb. It is just made to look like a automotive carb. There is no way joe schmo could make a 1/5 scale holley carb with normal home shop tools. The problem with using RC carbs is, the fuel is alcohol or nitro and RC carb flows alot more fuel to air for those fuels. Gas requires less fuel to air so I need to make my own carb. May as well make one that looks cool.

The things that require tight tolerances are valve stems, pistons, crankshafts, anything press fit like cylinder liners and lifter bushings.
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  #263  
Old 01-31-2011, 12:43 AM
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cool, another question hahaha im intrested in getting my machinst ticket when i get out of school and have finished my robitics degree (thats if all goes to plan) anyways onto the question, when doin manual machining how do you stay within tolerances? is it a type of thing where you cut a little and measure?

Chris
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  #264  
Old 01-31-2011, 05:44 PM
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Originally Posted by trucker47 View Post
cool, another question hahaha im intrested in getting my machinst ticket when i get out of school and have finished my robitics degree (thats if all goes to plan) anyways onto the question, when doin manual machining how do you stay within tolerances? is it a type of thing where you cut a little and measure?

Chris
I personally rely on the digital readout. If I need a 3/8 slot 1 inch from an edge. I would put in a 1/4 inch cutter and cut 7/8 from the edge to center of the bit and then move to 3/4 and cut my way back. It's like manual CNC only you have to do all the offsets in your head before you start.
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  #265  
Old 02-01-2011, 05:47 PM
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ahh i see, thanks

Chris
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  #266  
Old 02-04-2011, 03:46 AM
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Amazing, this is a piece of art and I mean every piece of it
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  #267  
Old 02-06-2011, 02:34 PM
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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.



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  #268  
Old 02-11-2011, 08:44 PM
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Well I'm getting real close. All i need to do is part off the ends, cut a flat on the front shaft and thread the rear shaft. I'm not going to do anything fancy like counter weights. I don't want to screw it up.

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  #269  
Old 02-11-2011, 08:47 PM
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kidcrawler kidcrawler is offline
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Did you make that crankshaft on the lathe?
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  #270  
Old 02-11-2011, 09:03 PM
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Quote:
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Did you make that crankshaft on the lathe?
Yes I did. The squares on the end has the 5 centers drilled into them.

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