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Searching through the scrap yard, I came across this piece of 1/8" aluminum plate. I dont think I have ever seen the "streched" specification before. The most notable thing about this plate is that it is very flat. Every other piece of thin plat that I have seen has had a considerable bow in...

Brian I have not incorporated a spring to retract the clutch. I had thought that I might do it the way that it was done on the original. AmHoist use small coil springs, radially between the shoe and the gear plate. You can see the spring in the upper left corner of this picture. I had...

The kitchen job was postponed so I got some done today. Cutting ratchet teeth is like gear cutting except an endmill is used. Set up the RT. Center the drum. Adjust depth of cut. 20 teeth requires 20 hole plate, 3 full turns + 12 holes on my 72:1 4" RT. The brake drum is 2.4" dia x PI = 7.4"...

John - My breakfast choice is Multi Grain Cherrios. I guess that might work just as well. Arnold - Thanks for the picture. The brake drum is just under 2.5" dia. Hardwood blocks have always seemed to me to be the right stuff. Mostly because of the remote locations where they were used. I would...

Well tomorrow I'm off to the autoparts store to checkout gasket materal as advised by Techonehundred, (Thanks) and to the fabric shops, as advised by Shopshoe but I'm going to feel a little funny asking the lady at the counter if she has anything to repair a diaphram. Arnold, suede would seem...

OK. the gloves are off the table. My wife came in the bedroom and caught me feeling the fine texture of the leather and I guess I had a guilty look or something so she said "Aren't you a little old to be playing with Mommy's fine things?" I knew I would catch hell if I told her what I was really...

Leather sounds like a good possibility, Arnold. It is one of the first things that I thought of but I don't know where to find it in the right thickness and texture. It needs to be thinner than belt leather. My wife has a pair of black leather gloves that she hasn't worn in thirty years. They...

Hi Zee, thanks for stopping by and leaving a message. The donkey and I are still growing. It may be as painful for the donkey as it is for me. I am beginning to form a plan of attack on the brake band and it may work out with a little help. I was not sure how to form the strap without slip...

Also called sheetrock or wallboard. If you think someone else can do it better then hire them, but if you want to do it yourself then here a list of tips 1. Use the WIDEST spreader you can, at least 4" but better 6" or 8", and keep the edge clean. 2. Apply mud to a slightly damp surface. Wipe...

While searching back through some vids, I came across this and came to realize that I had never gotten around to posting this on this forum even though I had uploaded it to youtube so here it is, just to finalize this thread. http://youtu.be/YR7SH5YDQGY I must have been in a hurry to get on to...

Good show! I never had a doubt. Jerry

Bob that is a very interesting valve arrangement but I don't think it has anything to do with the donkey style winch that Brian is building. It appears to be two cylinders in a common block, separated by spool valves and an integrated control valve. That might be what you find in a shipboard...

Now you're cooking. That should do the trick. I don't think fine control is need. You need to be able to go from full stop to full go in one easy motion. Your design looks right in both character and scale but if you had to use it 10 or 15 times an hour, you might appreciate a more comfortable...

Brian Here is the AmHoist valve Jerry

Brian Here is the picture with the two control handles on the shaft. The correct position of the shaft is parallel to the cylinder rod, 4 or 5 feet above it. Jerry

Brian Seem my post http://www.homemodelenginemachinist.com/index.php?topic=17217.0 on making brass globe valves. They are not that hard to build (the 90° one is easier) and at this size, you will get full flow in about 1/4 turn. I designed them so that the spigot cat be threaded 1/4 (32 or...

Brian The control valve of the AmHoist Donkey on the docks in Brunswick is long gone. What does remain, although unattached to anything is the control handle. I t took me quite a while to understand what it was because it is just jammed down behind the boiler not attached to anything. There are...

Brian By bolting your boiler to the base like that you will spoil its use as a cocktail shaker! What a shame. On a less serious point, since you are planning piping from the boiler to the cylinders, where will you put the throttle valve? In full size practice, the steam line passes through a...

Its worse than I thought. It seems to be a mix of OCD and ADD. I keep doing something over and over and over, but its different every time! Tel Since the conrod layout is irrational, the valve linkage and the valves are imaginary causing a great amount of uncertainty. Jerry

The grasshopper linkage is a very robust straight line mechanism. The links are much larger and better oriented to absorb the lateral forces than the Watt linkage. The center of rotation of the beam is the pivot st the far end of the beam (approx) and if you draw a line from that point through...