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A question about your Wyvern. I am currently building a Wyvern but I am struggling to undersatand how the cam shaft mount fits under the carank so the gears engage . I think I have machined the bits as per the drawings but it doesnt align. Any chance of a photo of yours with the flywheel off?

Thank you I will try your method it looks good . I will also use my 4jaw chuck it will hold the cast iron bar much better than a 3 jaw .

Hi A stupid question but was the Mandrel simply a piece of bar turned down to give a good fit . I have a piece of 1.5" MS . ps I am from Cumbria

Hi I have recently stated a Wyvern . Not sure how to machine the cylinder though there is a lot of metal to remove and the finished item looks fragile .

I have made two engines from Cotswold Heritage , very nice kits . I also have an untouched McOnie kit . The base plate is too long to machine on my little mill but I will start it soon .

Hi Depends what eqipment you have but a Stuart 10V can be built with a lathe and small drill press .

True the earlier kits have a nice forged crank ( not cast ) and my copy of the Book Building a Verticle Steam Engine from Castings covers this item . I made a simple jig as detailed in the book to machine mine .

I agree get trhe book . I started with a 10H years ago after I got a small lathe . I remember being surprised at how many additional tools I needed!

rhankey Saw your crank on the other thread , it looks great I fabricated mine . It works and runs true but not as good looking as yours . I uysed the Stuart casting for the counter weights with studs as the drawings not peened over yet but i will fix them that way . I am currently in initial...

rhankey Thank you the taper pins seem the way to go . I hadnt noticed them on the parts list ! Did you fabricate the crank and braze it ?

I tried a set screw thinking it would be good to retain the option of adjustment , but there wasnt enough grip .

I have completed a large % of my Stuart Triple and I am in the assembly stage . I see from earlier posts that there are several members who have built this engine and my question is what is the prefered method of fixing the reversing shaft levers to the shaft ? I cant see anything on the...