Farm Boy rust in cylinder.

I have just finished my Farm Boy and run it for a short time on Coleman's fuel.
I used Jan Ridders vapour carburettor which is fabulous, easy to make, easy to adjust, and the little engine starts first flick evertime.
Now I am stripping it ready for painting and have found rust on the top of the piston and in the cylinder bore.
Also beads of moisture on the cylinder head (inside of course !)
I am wondering if this is a common problem and if there is something that I should be doing to stop it happening in future.
All ideas gratefully received.
Tony Adams (Scotland)

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Mine dose the same thing, I think it's mostly combustion residue. It will probably just wipe out. I run mine on alcohol which will pull moisture out of the air so when I'm finished running it and going to put it up for a few days, I remove the spark plug and with the piston at Bottom dead center I give the cylinder a little spray with WD40.
Jim

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Yes, that seems the way to go.

I don't understand where the moisture comes from though.

Thanks for the advice, I'll do what you suggest.

Ian Water's V-Twin

Mini-Drill Quill Feed Shaft Gear diameter missing

Here's an e-mail I received from Don Holloway on Dec 27, 2011:

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Hi
I purchased plans for the precision mini drill press a while back and want to start to build soon.
The only thing that I don't see is the OD for the quill feed shaft gear.
Do you know what the OD of the gear should be?

Thanks and the best to you folks in the new year.

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My reply:

Don,

Good question.  Nobody has asked me that before, and I did not realize it was missing.  Unfortunately, Dad passed away over two years ago so I can't ask him, and his prototype does not have this gear exposed for me to measure it.

Would the pitch and angle of the gear teeth determine the diameter?  I'm not a machinist, so maybe I'm all wet in that theory.

I will post your question on our user forum - perhaps some other builders will be able to assist.  If not, I guess hold off on this part as long as possible, then perhaps the diameter can be surmised by the distance from it's shaft and the position of the quill - ???

Allen

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If anyone can help answer this more definitively, it would be appreciated!

Thx...

Siôn Silyn Robert's Cannon

Here's an e-mail I received from Siôn on Dec 21, 2011:

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Hi Allen,

I think that I can only claim ‘inspired by’ for this and I confess that it is not very well made. I do not have much/any spare time. As you can see the bore size is relatively small so that it will be a bit safer if it is ever fired. The first cannon that I made many years ago was about half the size of this and has been fired a number of times. Even at that size it is potentially dangerous device, so this one needs to be treated with respect. The carriage is walnut and the wheels are plum wood from our garden, for sentimental reasons.

I will try to find time to make a better one.

All the best and have a relaxing holiday,

Siôn

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Thanks Siôn - looks OK to me!

Ralph Ervolino's Farmboy projects

Here is the url for the large Farmboy:

http://www.youtube.com/watch?v=bhXJgAag1uM

Here is the one for the small one:

http://www.youtube.com/watch?v=sEi_rz20ljI

Ralph Ervolino's 4-in-1 Flame Eater on YouTube (4IN1)

http://www.youtube.com/watch?v=LpuV9-xcYjs&NR=1

Ken Morris's Mini-Drill motor

Ken sent me this e-mail on Nov 19th:

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"I used an electric motor from a Beam central vac powerbrush.  To control the speed I used  a router speed control. Motor cost is about $30.00. Mounting is no problem but the speed control is necessary. Ken"

I asked for verification of the drill used on - Micro Drill or Mini Drill.  He replied:

"HI Allen.  RE: drill press motor. The motor fits the mini drill press and is an exact fit. Brackets can be made easily and the shaft is .250. It is a 120 v motor and once again this motor is fitted into the beater head of the Beam central vac.  I use a router speed control to monitor the speed. I have more pictures. Thanks, Ken"