Gresley conjugated valve gear

[3405jimmy]

After some original works drawings of this gear. I assumed the NRM would be the first port of call. I'm not clear how the search works as all I end up with is a alphabetical list of drawings by number which seems a tad user unfriendly. So some advice on how you search would be helpfull or any other suggestions before I fail at the first post.

Thanks
Jim

[Deleted]

Hi Jim

The only drawing that I have to hand is for the 1:1 lever, the NRM used to show examples on their web and this is one of them, I thought that I had the 2:1 too but can't find it. I can say that Don Young's 'Doncaster' drawings are pretty much there in detail other t5han Don didn't fit a sealed bearing for the pivot point.

Here's the 1:1 drawing



Here's Don's drawings



Here's a full-size photo



And here's mine to Don's drawings with the added ball race bearings to 2:1 and 1:1 pivot points





There are a number of photos of the conjugated gear from the Sir Nigel Gresley overhaul online, I can post what I have here if this is helps.

Alas, I gave up trying to work through the NRM listing, life's too short...

Regards


Pete

[lankyyorky]

Hi Jim,

Try Doncaster drawings section K, downloads as a pdf.

Regards

[3405jimmy]

Thanks for the replies ill give section K a try.

Jim

[simplyloco]

Don't you have to marry your valve gear once you've conjugated it???
Merry Christmas!
John

[mbrown]

Surely, with the Gresley arrangement, it is a menage a trois....

Merry Christmas all!

Malcolm