Recent Posts

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11
Your Own Design / Re: Two Cylinder Engine
« Last post by Admiral_dk on June 24, 2019, 09:51:45 PM »
Nice to see that you have progress again  :cheers:  all the more important as this engine hass to earn it's keep.

That said - I truly know the feeling ; Yeah I finally moved forward - only to realize that this has to be followed by two (or more) steps backward  :???:

Best wishes

Per
12
Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by crueby on June 24, 2019, 09:36:06 PM »
Few more bits on the firebox assembly, added some bars to the screws on the bottom that will clamp the firebox to the floor when the nuts are tightened down. The bars can slip through the opening in the floor from one side, and far enough over the other way to get the second end down, then back for tightening.

A view from the bottom showing the end of the chute down below the frames:

Also added a strap over the top to hold the boiler shell in place. The front end of the boiler has screws through the front stand as well.

Then milled up the firebox door, on the end of a chunk of round bar:

Parted off on the bandsaw and trimmed on the sander, then riveted to the firebox and painted:

Now on to the smokebox door frame. It is very different from a locomotive one, has a frame with a sheet across the top and a bump up in the bottom, leaving two swinging doors that will clear the piping and backstay. Started with a disc of brass sawn from a larger sheet, and drilled/mounted on a center arbor to mill the rim to the right size. Added three screw blocks that will take screws through the end of the smokebox shell, milled them to fit the inside of the boiler shell, also notched the sheet to fit the shell as well. Then started cutting the inside edges out:

Straight cuts up the sides where the doors will hinge and across the bottom for the bump up, that shape will be hand filed to shape later:

and cuts across the top of the opening - could not go all the way across due to the arbor, will set that up next:

It does look like a shop-made Halloween pumpkin, or a robot face...


13
From Kits/Castings / Re: Stuart Major Beam Engine
« Last post by Chipmaster on June 24, 2019, 09:15:21 PM »
Hi Dave, indeed the pair of Stuart Twin Victoria connecting rods required a lot of careful work with files. I used filing buttons to produce the rounded ends. The starting point was flat steel bars.  The holes for the big end and crosshead U fork were drilled and reamed first then the rods were turned down between centres on my lathe. The taper turning attachment was used to produce the fish bellied shape by altering the taper at intervals along the connecting rod. When machining was completed and the rods were off the lathe the filing began. First I opened up the U fork with a hacksaw, plugged my iPod into the docking station in my workshop and started filing. I compiled a playlist for for the job "Music to file Con Rods by", the laid back / calming music was vital.

Turning between centres.

Connecting Rod by Andy, on Flickr

Connecting Rod by Andy, on Flickr

The fish bellied shape - subtle.
Connecting Rod by Andy, on Flickr

Rod sitting on the plan - shows what was required.
 
Photo 96 by Andy, on Flickr

I didn't take any photos of the progress with filing, only the finished connecting rods.

Connecting Rod by Andy, on Flickr

Connecting Rod by Andy, on Flickr

Connecting Rod by Andy, on Flickr

Most of the work on my Twin Victoria was done before I joined Model Engine Maker. However, I added a brief build log on MEM if anyone is interested. I'm not sure how to paste a link to it, I'll post this then have a go. 

http://www.modelenginemaker.com/index.php/topic,3378.msg59892.html#msg59892

Andy
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Introduce Yourself / Re: Hi from Sutton in Ashfield UK
« Last post by toolznthings on June 24, 2019, 08:58:58 PM »
Another welcome to the forum  :)   :ThumbsUp:
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Introduce Yourself / Re: Hi from Sutton in Ashfield UK
« Last post by Kim on June 24, 2019, 08:44:38 PM »
Hi David,
Welcome to the forum!
So, do you prefer Dave, or David?  I see you have signed both ways in your posts above :)

Kim
16
Your Own Design / Re: By Jupiter
« Last post by Jasonb on June 24, 2019, 08:09:38 PM »
I'm also ready and the engines I put on the entry form are all finished too.
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Your Own Design / Re: By Jupiter
« Last post by Vixen on June 24, 2019, 08:08:36 PM »
They normally sign every tool and part out then every tool and part removed back in but the tales of what is found on an aircraft during maintenance  :-X I was thinking also of the pilot being able to walk round and just having to check one wire was securely in place rather than every split pin prior to every take off. You know what fly boys are like if you make them do more than they have to prior to go playing   ::).

Jo

The ground crew account for every item entering and leaving an aircraft and for the aircraft being fit to fly. The flyboys simply swagger about, like "Top Gun" heroes, in their smart flying suits and sunglasses poking and shaking anything they can easily reach, it's all part of the image to make them look good. The aircraft was already signed off as being fit to fly by the maintenance Chief

Mike
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Your Own Design / Re: By Jupiter
« Last post by Jo on June 24, 2019, 07:52:23 PM »
Jo, In that case, you would be horrified to learn that the RAF approved method for split pins is to cut them short and bend only one leg through 30 degrees, leave the other leg straight. The split pins with a single bend will never fall out and are easier to remove than split pins tied in knots. You never try to reuse a split pin.

You both ready for the Guildford Open Day?


They normally sign every tool and part out then every tool and part removed back in but the tales of what is found on an aircraft during maintenance  :-X I was thinking also of the pilot being able to walk round and just having to check one wire was securely in place rather than every split pin prior to every take off. You know what fly boys are like if you make them do more than they have to prior to go playing   ::).

I'm ready to go to Guildford  :)

Jo

19
From Kits/Castings / Re: 1909 Mercedes Aero Engine
« Last post by Old Bill on June 24, 2019, 07:29:21 PM »
Thanks Dave. Yes, I think they look good too. Devils to hold though!







Time to start on the final assembly, finishing bits off properly. I shall make up the push rods on assembly. Distributor remains to be done and then it will be the moment of truth!

Steve  :)
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Mistakes, muckups, and dangerous behaviour / Re: Boring hole with a keyway
« Last post by Vixen on June 24, 2019, 07:17:27 PM »
Nice one Roger :ThumbsUp: :ThumbsUp: :ThumbsUp:

Mike
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