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R&B gas engine

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Bogstandard19/06/2010 20:04:31
263 forum posts
I am just getting together all the necessary for building the R&B gas engine sold by Bruce engineering.
 
On the plans, it shows a ball weight governor as seperate items, and is not required to run the engine, just for governing the speed if you want to.
 
Well I want to, but it shows nowhere on the plans where the damned thing locates.  I can work out the rods and linkages if I could just get it's location on the engine, and as I will be making a water hopper rather than an external radiator, I need to know it's position before that can be designed, just in case it gets in the way.
 
Another thing is that I will be fitting two 9" flywheels instead of one 12".
 
Has anyone got any info on fitting either of these items, and things to watch out for?
 
Bogs
JasonB19/06/2010 20:20:02
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Bogs, The build was covered in ME so it may get a mention in the articles. If you don't have access to the old copies you can get reprints.
 
Can't say I've seen one with the governor so could not say if it holds the exhaust open like a hit and miss or adjusts the carb like Westbury's Centaur and Wyvern engines.
 
Have you asked Rob Wilson over on Madmod if he intends to govern his one.
 
Jason
Bogstandard20/06/2010 02:36:21
263 forum posts
Jason,
 
Thanks for the link, I have just bought the article.

I am doing this in unison with Rob, and he has said the same thing about the location of the governor, so I think he will be fitting one as well.
He will be casting up the water hopper when I can get the drawings back to him. But without the required info, I can't proceed.
 
By the looks of it, it adjusts the carb, so I suspect it is mounted somewhere around the head, but the drive will have to come from the crankshaft, and that is the bit I am worried about fouling.
It might be something dead easy, like a remote base mounting, but I can't take that chance.
Hence my question asking if anyone has fitted a governor.
 
John
JasonB20/06/2010 08:23:33
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With a cast hopper I can see your need to know early on as you can't just add a bracket to the fabrication, should look good with a cast hopper. Are you basing the hopper on any particular style? I went for a Galloway look-a-like when I built My hit & miss. Hopefully next week I should be picking up casting kits for an actual Galloway as well as a Domestic stovepipe and IHC Famous
 
Jason
Bogstandard20/06/2010 08:39:17
263 forum posts
Jason,
 
That sure is a nice looking engine.
 
I did a few sketches of the type we are considering. An open top version. You would need to ignore the finning, that won't happen, it is just a little too modern.
 
 http://i202.photobucket.com/albums/aa102/bogstandard_photos/hopper.jpg
 
Sorry it has to be a link like this, but this crappy website won't allow me to copy and paste links.

John


Edited By Bogstandard on 20/06/2010 08:44:55

JasonB20/06/2010 09:41:33
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That will be another interesting bit of pattern making and coring but from what I've seen sofar Rob is upto the task. Agree leave the fins off, in fact most of these engines can run for a reasonable time with no water in the hopper, its just if you want it running all day or have it working under load that the water is really needed.
 
Re posting links its quite easy on here. At the top of the reply box next to the smiley is a "link" icon, click that and then just paste the url into the box at the top, type "here" or whatever in the title box and its all done no need for brackets, url etc.
 
Jason
Ian S C20/06/2010 09:54:02
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I seem to remember that the one a few yrs ago in ME with two flywheels had standard size wheels, and I think the builder mentioned that the crankshaft could have been longer, I'll see if I can find the artical. The two big flywheels would be an advantage if you wanted to run a generator of it(full size standard practice to use larger wheels for an engine running a generator). Ian S C
Bogstandard20/06/2010 12:26:28
263 forum posts
Jason,
 
I have every confidence in Rob to turn out perfect castings, but without the drawings he can't do anything just yet.

For posting, I have tried all that, from paste in the right click menu to ctrl V, it just won't allow me to paste. So I have to hand type the URL in.
 
Ian,

The flame cut crank blank looks to have plenty of meat on the end of it for fitting the second wheel, but no dimensions shown on the plans for the twin wheel setup.
It will cause no problems as I can work it all out myself, but if someone has already done it, then why not pick their brains for answers?
I am hoping to put this engine to work, I just need to find something around the garden or shop for it to do.
 
John
 

Bogstandard22/06/2010 07:05:34
263 forum posts
Ian,
 
This is the flame cut crank and conrod, and as you can see, there seems to be plenty of meat on the RHS of the crank blank to accomodate the second flywheel, even after the gear for the cam has been fitted.

 

So the questions are still here if anyone has fitted the governor or the second flywheel.
 

John

 
JasonB22/06/2010 07:31:44
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Don't forget you will also need some crank length for the pully if you are going to put the engine to work, though you could bolt one to the side of a flywheel like some of the full size did.
 
Jason
Bogstandard22/06/2010 10:38:09
263 forum posts
Jason,
 
The take off is actually on the short shaft side, and as far as I can remember, it is bolted to the flywheel, the extended side has the fitting for the starting handle, but that can be shortened considerably if necessary or even done away with if I start it with a portable drill. Or if I am really lucky, it might start with a spin of the flywheel by hand.
 
John
JasonB01/10/2010 15:45:34
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Remembered where you asked about the governor now Bogs, have a look at this engine.
 
 
Also have a look at teh Economy they have for sale as it has a very similar set-up
 
Jason

Edited By JasonB on 01/10/2010 15:48:19

RICHARD GREEN 209/09/2020 15:03:15
329 forum posts
193 photos

Can anyone give me the overall dimentions of the R&B gas engine ? length , width etc, Has anyone built it with twin 12" flywheels , what about making it hopper cooled ?

Richard.

JasonB09/09/2020 15:12:59
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Jo over on MEM should be able to give you the sizes of her twin flywheel one.

I'm not keen on the way the copper water jacket is used as the head gasket as well but should be easy enough to fabricate a hopper and seal a cast iron liner though the whole engine is more of an English tank cooled style fixed engine than a more portable one with hopper. .

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