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Got the Coomber rotary repainted, polished and running. The fly ball governor works so well that it slows the engine down too quickly and it stops. A little adjustment needed. This is now by far my fav engine. Still working on building the dynamo that will be driven off of it via the three...

ah thanks. wow interesting. but sure as hell with the $ they are loosing by not being on line they better be hiring someone from the outside to fix stuff quick.

Does anyone have a clue what is going on with PM research? Their website has been down for over a week at least. I called a couple of days ago and they said they were working on it. A little hard to believe. Their site was not rocket science. Hope they are not having business problems. I...

This response might be a little late, but i have a few copies of old Stuart Catalogs. Aparently Stuart first introduced BA screws in the 1928 issue. chances are your dealing with whitworth as all the older engines would have used. Also Stuart offered both whitworth and BA at least through the...

Well after all the questions, answers and plans and even getting my Stuart triple to run, looks like I may not go full bore on the project. I just bought another triple on eBay. Though not named, it is obviously a Brunell triple which is larger and more complicated than the Stuart engine...

mechanicalboy: wow obviously my bellows wont cut it. the triple has a low pressure cylinder that is 1 3/4"x1". but for looks, I'm sure as heck not going to make a condenser 3x5 inches. It will look as big as the engine. Ill put up with a little inefficiency for the model looks. Plus it...

Well you have all helped. me. I believe the end result is 1. the air pump will be tied to a surface condenser and pump condensate and air. 2. since the flow rate is small and Stuart actually calls it a feed pump, the water pump will be a boiler feed pump with some other additional pump for a...

Mechanicboy, thanks. I thought the water pump on this engine was a boiler feed pump based on others comments. Actually makes more sense since its on the engine for it to be a circ pump for cooling the condenser although the flow rate for this pump seems low for cooling. Now your comments on...

Great help guys. Charles, you hit it exactly. Is does match the Edwards scheme. So maybe I shouldn't worry about having the condensate go into it. thanks. Rhankey: yeah that unit is a little overpriced. Even with condenser I wouldn't expect it to go over $4000-5000. Good luck with a self...

I haven't started my renovation of my stuart triple yet but am still pondering the pump situation. I have taken both pumps apart and understand their operation. yes one is a boiler feed pump. the other is the "air pump". The design builds a vacuum and the discharge goes out though a round...

Ok, has anyone built one to these Brunell Coomber rotaries? On 30 psi steam I can get about 3/4 revolution out of it before I have to give it a push. it turns freely and is well oiled. I have not taken it apart yet to figure out how the thing works. cant tell from looking at the outside...

I have a Coomber rotary that I purchased on ebay on its way from the UK at this time. It is from Brunnell models and comes with a dynamo which is unfinished. Has anyone out there built one of these. I have only seen photos of two of these on the whole internet and one is at the Brunnell site...

lol no magic, just different planet I think sometime. Speaking of different planet. I just did a buy it now on a Coomber rotary steam engine on ebay. now thats different. not sure one has ever been on there for sale before.

The post I put on a few minutes ago was premature. It runs! I had neglected to notice that when I rotated the IP concentric 180 degrees, it reversed the valve operating. Went back and switch them on the reverse link. and now the engine runs in forward and reverse at 25 psig. a little halting...

Well that's just frustrating as hell!!! Adjusted all the valves at least HP and LP, and adjusted all the eccentrics per the previous posts. Even found the IP eccentric 180 degrees out. Was very excited about hitting it with steam. End result this morning? NOTHING OR WORSE! Went from...

I'll try it again. Thanks Charles and Rhankey for your help. i have some adjusting to do. the "crossed and uncrossed" eccentric rods seem OK but in no way are the eccentrics symmetrical about the crank. I did get it to run on steam in one direction and with the LP drain valves open. We will...

damn it i just wrote a length reply and is didnt go through. said i wasnt registered and i would store it until i am. lol i am registered and have no idea where is would be stored. test test

Help, help, help. this may be the perfect thread to ask about the triple timing. I have an ebay engine and I'm not sure its ever been run on steam even though its 10 years old. Things don't look right. I see the comment above about the eccentrics being symmetrical and that makes sensel...

Got my hands on my triple and am exploring it. Im sure the water pump is for boiler feed. It's a plunger in a chamber next to a double ball ck. the air pump is quite strange. it has roughly a 1/2" piston which forces gases out through a circular multi hole flapper valve on top. On the down...

Just a thought. If your looking for better looking small diameter nuts for display purposes, go with metric if you can. In the 2,3,4,mm sizes the shape of the nuts is much taller and not as flat as our standard nuts. the look quite a bit more "insustrial scale"