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Smith Motorwheel Engine


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  #1  
Old 03-20-2019, 08:45:28 PM
The Diesel Doctor The Diesel Doctor is offline
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Default Smith Motorwheel Engine

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ID:	331062. Old plantation house find. We don`t have barns over here. Friend gave this to me today. Found a lot of info on line about it. Has a sprocket on it. the only thing missing is the carburetor. No tag or S/N on it. Any input would be appreciated. AL
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  #2  
Old 03-21-2019, 07:51:40 AM
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Preston Wells Preston Wells is offline
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Default Re: Smith Motorwheel engine.

Nice piece. To bad the brass carb is missing. Its worth as much as the whole engine. Good luck!
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  #3  
Old 03-21-2019, 11:33:59 AM
flywheelphil flywheelphil is offline
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Photo Re: Smith Motorwheel engine.

Here are a few pictures of my Smith generator engine
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Old 03-21-2019, 03:47:54 PM
flywheelphil flywheelphil is offline
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Default Re: Smith Motorwheel engine.

Two more photos after I gave it a little clean up
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Old 03-21-2019, 09:48:25 PM
Doug Ourada Doug Ourada is offline
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Default Re: Smith Motorwheel Engine

It is a model BA Smith made in 1917. In addition to missing the carb and intake it is missing the horns and exhaust. It was probably for a bike or flyer so it is missing the wheel, fender and gas tank. If you are interested in selling it I would be interested.
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Old 03-22-2019, 12:19:52 AM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: Smith Motorwheel Engine

I thought the engine was stuck. Put oil in the cylinder and worked the flywheel a bit. To my surprise it broke free. The crankcase was dry and the home to a tarantula. Pulling it down to clean it up and inspect the parts. If it looks good i might graft a small carburetor to get it to run. AL
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Old 03-22-2019, 12:28:35 AM
K-Tron K-Tron is offline
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Default Re: Smith Motorwheel Engine

It looks easy enough to pull the cylinder and check that the piston rings are free before trying to run it. It would also make flushing the crankcase out a bit easier... That is a really such a great find. Hopefully you can find the correct carburetor for it one day. I was going to offer to trade you some 1-71 intake valves for that engine, but you're too smart for that

Chris
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Old 03-22-2019, 07:07:13 PM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: Smith Motorwheel Engine

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ID:	331139 Found the S/N stamped in the block flywheel side on a pad by the valve operating assembly. AL
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Old 03-22-2019, 07:11:46 PM
Pat Barrett Pat Barrett is offline
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Default Re: Smith Motorwheel Engine

What I find amazing is that thing found it's way to Hawaii
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  #10  
Old 03-22-2019, 09:34:08 PM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: Smith Motorwheel Engine

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ID:	331147 PAT, I can see where the sugar plantation owners and missionaries in that era could afford a Smith Motor Wheel. They also had the first automobiles. It`s been said " They came here to do good and they did well" What`s with the 1 inch chain pitch sprocket? Must have been modified to drive something else. AL
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Old 03-23-2019, 07:09:21 AM
Pat Barrett Pat Barrett is offline
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Default Re: Smith Motorwheel Engine

Size 2040 would have had a 1" pitch, It's what's called extended pitch chain and is and was used extensively in agriculture. Many applications. 2040 would be size 40 with every other roller missing.
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  #12  
Old 03-24-2019, 05:36:43 PM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: Smith Motorwheel Engine

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ID:	331292 Checking out the MAG. Turns over by hand and i feel a small resistance 180 degrees apart. Measured 3 volts. The magnets are very weak. One is cracked. They are 1 inch straps with a 1 3/4 throat. Any suggestions on remagnetizing or getting new ones? Was able to remove and free up the oiler door screws an springs on each end. Found the timing marks on the drive gear. AL
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  #13  
Old 03-27-2019, 12:51:11 AM
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Default Re: Smith Motorwheel Engine

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ID:	331470 Under the end cap of the mag there is a point assembly. The points open and close as they rotate in a eccentrical housing.The current gap is .006". Does this sound about right? The timing can be adjusted by loosing two locking screws and rotating the outer housing. AL
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Old 03-30-2019, 02:52:54 AM
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Default Re: Smith Motorwheel Engine

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ID:	331690 Cleaning up the engine parts. The oil pump is camshaft operated and pumps oil from the lower sump and sprays it into the upper crankcase. The crankshaft is held by thin roller bearings into a tapered cup. The nut that holds the flywheel on the crankshaft is left hand thread. the intake and exhaust valves are good, no pitting or wear. There was not one drop of oil in this engine. With the humidity that we have over here i am amazed that the parts are still serviceable. This engine was on the ground under a plantation house down by the old Lahaina sugar mill. AL
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Old 04-03-2019, 03:45:28 AM
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Default Re: Smith Motorwheel Engine

Piston,rod and cylinder. Piston has 2 compression rings and no oil scrapers. Small grooves on the bottom with drain holes. Bronze rod has no bearing shells on the lower end. the rod cap is held on by four 10-32 machine screws with lock washers.Oil drains through hole to lube rod journal. Cylinder has 2 3/8 bore with chamfer at the bottom to install the piston and rings. ALClick image for larger version

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Old 04-03-2019, 09:26:30 PM
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Default Re: Smith Motorwheel Engine

I need to replace the piston pin as it is worn and corroded. It is 0.404 diameter and is 2 3/16 inches long. I would like to use a larger pin and ream the rod and piston to fit and compensate for some wear. I could go up to 0.410 inches. Does anyone have pin diameters from other small engines? If they were to long i could cut it down. ALClick image for larger version

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Old 04-03-2019, 10:31:30 PM
ibdennyak ibdennyak is offline
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Default Re: Smith Motorwheel Engine

Quote:
Originally Posted by The Diesel Doctor View Post
Attachment 331147 PAT, I can see where the sugar plantation owners and missionaries in that era could afford a Smith Motor Wheel. They also had the first automobiles. It`s been said " They came here to do good and they did well" What`s with the 1 inch chain pitch sprocket? Must have been modified to drive something else. AL
Could it possibly be that it has to do with the skip tooth bicycle chains that were in use back then?
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