Author Topic: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine  (Read 27515 times)

Offline Jasonb

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #15 on: September 02, 2015, 02:53:13 PM »
Thanks Jo.

I see the original has separate bearing caps for the crankshaft bearings, this would be a good idea as you could get the crank out without having to pull the whole engine to bits :)

Offline sshire

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #16 on: September 02, 2015, 03:02:28 PM »
Thanks so much, Jo. Your library is most impressive.

Jason
The Ozouf drawings do have separate bearing caps. The engine at NAMES has the bearing cap screws recessed. Not to my liking. Studs and Otto nuts for my build.
Philjoe picked up some bronze drops which I got from him at R&T last month. I now have a lifetime supply of bronze round for bearings.
Best,
Stan

Offline mklotz

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #17 on: September 02, 2015, 03:03:11 PM »
Beautiful work, Stan.  I never cease to be amazed at how quickly your skills have developed.

I'll be astounded if it turns out that this engine is a model of a real engine actually used in a practical application.  From an engineering viewpoint, it seems to me that making the cylinder oscillate is simply asking for a legion of mechanical problems.  It does, however, make a beautiful and exciting model, full of unusual and complicated motions.

Lady G should have lived in Hollywood.  A naked woman riding a horse down the street would hardly be noticed there. 
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Offline sshire

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #18 on: September 02, 2015, 03:06:38 PM »
And no fewer Peeping Toms
Best,
Stan

Offline sshire

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #19 on: September 02, 2015, 03:12:20 PM »
Hollywood? Philadelphia just had the annual Naked Bike Ride. They photobombed a wedding photo shoot.
Best,
Stan

Offline mklotz

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #20 on: September 02, 2015, 03:46:18 PM »
Ah, yes, the naked bike ride.

I've always thought that it would be far more entertaining if held in January.

Tell me, do they wear helmets?  If so, why?
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Offline sshire

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #21 on: September 02, 2015, 04:28:44 PM »
It's the smart think to do. Protection for one vital part
Best,
Stan

Offline b.lindsey

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #22 on: September 02, 2015, 04:36:29 PM »
Stan buddy, with the RE, the Quarter Horse and now this sizeable new engine, and all the shows you have been attending, you may be needing a bigger means of transporting your "iron" from place to place.  :ROFL:

Bill

Offline Jasonb

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #23 on: September 02, 2015, 04:42:30 PM »
Bill is this the sort of transport you are suggesting?  ;)


Offline Tennessee Whiskey

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #24 on: September 02, 2015, 04:46:48 PM »

Offline Edward

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #25 on: September 02, 2015, 04:53:01 PM »
I can think of a fair few types of steam ship engine that had oscillating cylinders. I have a book at home called 'steam at sea' which has some nice pictures. IIRC they were popular for paddle steamers as they were low height. https://en.wikipedia.org/wiki/Marine_steam_engine#Oscillating

Offline mklotz

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #26 on: September 02, 2015, 05:32:23 PM »
It's the smart think to do. Protection for one vital part

I doubt that people who ride naked through the streets have anything in their heads worth protecting.
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Online ths

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #27 on: September 03, 2015, 01:27:25 PM »
Stan, what a start. Looking forward to more. Cheers, Hugh.

Offline sshire

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #28 on: September 08, 2015, 07:30:10 PM »
Lady Godiva Rides Again - Episode 2
Roy Ozouf’s Coventry Engine


Both side plates have been milled. Between working on other parts, I'll attack removal of the milling marks from the recesses. As careful and precise as I've tried to be on the D.O.C. of .125", there are still minor variations that must go.



With a combination of various grades and shapes of Cratex on the Foredom hand piece, die polishing stones and Scotch-Brite disks, I got to this point in about an hour.






Frame Spacers

The drawing of the four frame spacers shows a double taper one-piece spacer. I wanted either a painted or powder-coated spacer with a brass center. Nothing for it but to make it in pieces.



With a long bar of .5” 6061 round in the collet, 10 pieces were parted off. I only need eight, so, two for insurance.





First, one end was turned to diameter, drilled and tapped. The, an indexible profiling tool. Compound at 5 degrees. Taper cut taken.



Family shot



A form tool was made and hardened for the brass centers.



The parts for one frame separator.



Assembled



All finished



A few possibilities for the aluminum segments of the spacers.

     a. Powder coat the aluminum (most likely black to contrast with the brass.

     b. Painted and clear coated.

     c. Clear powder coat

     d. Bead blast and clear coat (either paint or powder.}

I’ll make up some test bits of aluminum and try each finish. Then, we can vote.

BTW, I did use all ten blanks to get the eight parts. One broken tap and a total (not paying attention) muckup on the other.


Best,
Stan

Offline b.lindsey

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Re: Lady Godiva Rides Again - Roy Ozouf's Coventry Engine
« Reply #29 on: September 08, 2015, 08:06:11 PM »
Man....those look fantastic Stan!  Anxious to see what finishing technique you settle on after the trials. The black and brass sounds very appealing though. Glad to see an update on the Coventry.

Bill