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Building a bigger Benson Engine

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JasonB	28/12/2011 18:31:36
25215 forum posts 3105 photos 1 articles	I've started to write up the build of my 1 1/2 times larger version of Anthny Mount's Benson Engine over on HMEM if anyone is interested. I'll do it there as its easier than posting pics to this forum but as a taster this is where I'm at for now Jason
JasonB	28/12/2011 20:36:50
25215 forum posts 3105 photos 1 articles	Oh just realised I left off the link, I've also added the entablature now read it here
AndyB	28/12/2011 20:39:43
167 forum posts 7 photos	I'm there Jason. Cracking! Andy
Stub Mandrel	28/12/2011 20:59:11
4318 forum posts 291 photos 1 articles	Nice. I couldn't understand the 'paint splatter' on the base until I looked at the other thread! Neil
JasonB	15/01/2012 19:21:27
25215 forum posts 3105 photos 1 articles	I've just added the build up of the cylinder and valve chest over on HMEM, read it here J
JasonB	29/01/2012 19:09:02
25215 forum posts 3105 photos 1 articles	Just added how to turn a 6" length of 1 1/2" x 1/2" steel into a pile of swarf and this over on HMEM
JasonB	05/02/2012 13:34:07
25215 forum posts 3105 photos 1 articles	Well the cold has not kept me out of the workshop this weekend, having to file the piston rod guide to profile helped stave of hypothermia. I've jumped ahead a bit but having got the engine to a stage where it could be test run I could not resist plugging in the compressor, here is a short video. Its running on 10psi and with all this recent talk of getting piston rings a good fit I should point out that there are No gaskets, No gland packing and No piston ring material yet so should be able to get it down to a nice smooth tick over once its all set up properly and the governor is fitted. J
Stewart Hart	05/02/2012 14:50:18
674 forum posts 357 photos	Cracking Job Jason Stew
JasonB	04/03/2012 08:48:43
25215 forum posts 3105 photos 1 articles	Latest progress update here J
AndyB	04/03/2012 09:29:41
167 forum posts 7 photos	Hi Jason, I am still following...with admiration and my learning head on! Andy
JasonB	11/03/2012 19:12:24
25215 forum posts 3105 photos 1 articles	Last bit of construction can be seen on HMEM J
JasonB	19/03/2012 18:47:36
25215 forum posts 3105 photos 1 articles	Well its all done And a video of it running And as usual more photos on HMEM site Jason
Ady1	19/03/2012 19:47:19
6137 forum posts 893 photos	Looks like a real pro job I'm not jealous or anything, green is my natural colour...
Stub Mandrel	19/03/2012 20:19:52
4318 forum posts 291 photos 1 articles	A beautiful engine Jason, but your 'flyby" camerawork makes me feel seasick! (I'm just jealous, like Ady) Neil
Ian S C	20/03/2012 10:22:19
7468 forum posts 230 photos	Not being a steam guy it took a second or two to work out that most of the noise was your compressor, but what it the rest of the sounds, sort of squeaky. What sort of pressure, and revs? Ian S C
JasonB	20/03/2012 13:42:53
25215 forum posts 3105 photos 1 articles	60-70 rpm with the balls just lifting and the compressor reg wound down to 15psi. If you look at the last post in the link to the build on HMEM I mention that "squeak" which I think is actually a whistling noise. I did not have it when I ran the engine without packing & gaskets and think it is a part blocked passage caused by the liqid gasket getting into the lower cylinder port which is making the noise on the downstroke as the air is exhausted. It does not make the noise when turned over by hand. Need to whip the cylinder off and clear the obstruction. J
Engine Builder	20/03/2012 18:13:07
267 forum posts	Great work Jason, wonderful workmanship. It runs very sweet. I too like the slightly larger models.

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