Post by: classixs on June 02, 2019, 03:04:45 am
I see that you have both variations represented as well, lucky you...
[attachimg=1]
[attachimg=2]
[attachimg=3]
Post by: Scalex on June 01, 2019, 04:51:59 pm
Lovely engine by the way
Regards Andrew
Post by: Stoker on May 10, 2019, 02:20:04 pm
Post by: Randy Tucker on May 10, 2019, 11:53:35 am
Post by: Griffin on May 10, 2019, 11:40:52 am
I had noticed the older black box #20's use the single screw and plate on their "open" valve chest.
Post by: classixs on May 10, 2019, 09:34:01 am
So cool that you have both known versions (screws/rivets and screws only)...so far.
Had you noticed the difference yourself, until this came up?
Well done, and thanks for sharing Steven !
...and Randy, why on earth would they postulate that?
Post by: Randy Tucker on May 10, 2019, 07:13:02 am
Post by: Griffin on May 10, 2019, 05:47:45 am
First up is a power plant that is of 1986 vintage. You will notice that this one is fitted with two screws, and two rivets in the side of the valve chest, and the "O" ring gland in the valve stem.
[attachimg=1][attachimg=2][attachimg=3]
The second #20 is also a power plant, and is of 1985 vintage. This engine was once a resident of the Temple of Steam.
You will notice that this engine is fitted with four screws in the side of the valve chest, and has the same "O" ring gland in the valve stem as the previous engine.
[attachimg=4][attachimg=5][attachimg=6]
I am sure this will all add to the mytery of the Jensen #20 steam chest design.
Post by: Randy Tucker on May 08, 2019, 05:12:54 pm
Post by: Swift Fox on May 08, 2019, 02:13:11 pm
Quote from: txlabman
Hmmm...
This is getting interesting. ???
Agreed, seems more of them are coming out of the woodwork.
Post by: txlabman on May 08, 2019, 01:08:53 pm
This is getting interesting. ???
Post by: Empire man 202 on May 08, 2019, 09:34:49 am
Post by: classixs on May 06, 2019, 01:39:12 pm
He has two of these, one with cast iron and one with the early teal painted stamped aluminum generator, will be fun to see if they´re different to ours here
Fingers crossed Andrew will do the same, once i get hold of him, as he (appearently) has two as well.
Post by: Nick on May 05, 2019, 08:50:50 pm
Interesting that there are more variations Randy, will have to take a look at my 20's this afternoon...
Well... no luck with finding this feature on the 20's on the shelf here
Post by: Randy Tucker on May 05, 2019, 03:59:00 pm
Post by: classixs on May 05, 2019, 11:43:27 am
Post by: Kevin68 on May 05, 2019, 11:29:38 am
Post by: classixs on May 05, 2019, 10:55:21 am
Regarding age i was pretty close then, since the cast iron base genny, according to much more knowledgeable people than i, was decommisioned in 1979.
Will have to ask Steven "Griffin" and Andrew "Scalex for details of theirs, to see if more variations is out there.
Post by: Nick on May 05, 2019, 09:43:22 am
Post by: Randy Tucker on May 05, 2019, 09:18:44 am
Post by: Randy Tucker on May 05, 2019, 09:15:05 am
Post by: Randy Tucker on May 05, 2019, 09:14:12 am
Post by: Randy Tucker on May 05, 2019, 09:10:36 am
Post by: Nick on May 03, 2019, 12:24:11 am
Post by: classixs on May 02, 2019, 11:54:28 pm
@Nick Yes, i somehow managed to make it "private", should be ok now? (https://emoji.tapatalk-cdn.com/emoji28.png)
Post by: Nick on May 02, 2019, 07:42:27 pm
By the way, have you removed the video?
Post by: Jim on May 02, 2019, 07:38:09 pm
I can see why your so happy to add that to your collection, looking forward to seeing what the old elbow grease does to this delightful piece of Jensen history.
Post by: Stoker on May 02, 2019, 04:13:32 pm
Post by: jkbixby on May 02, 2019, 03:58:46 pm
Post by: classixs on May 02, 2019, 03:56:48 pm
You´ve made at least one person very happy today (https://emoji.tapatalk-cdn.com/emoji482.png)
Post by: oilfield_steam on May 02, 2019, 03:37:29 pm
Great engine, that one.
Enjoy it, Jan. It has certainly found a good home.
Post by: classixs on May 02, 2019, 03:22:11 pm
Yes Philip, it is a factory production, but i assume these were an experimental batch(es), rather than dedicated "specials".
However, that´s all gueswork on my behalf, and would be very happy to be educated... GIL, need you here !!!
I naturally couldn´t resist testing it on steam, now that it was out of the box, and besides being a bit "dry", it performed very nicely.
https://www.youtube.com/watch?v=ERFtAO-g4OY
Post by: Swift Fox on May 02, 2019, 02:19:09 pm
The valve stuffing box is also a new one on me, i take it was a factory special?
Post by: Stoker on May 02, 2019, 02:15:12 pm
Cool find and great Forum assist on the deal. Delighted to learn about this!!!
Post by: St Paul Steam on May 02, 2019, 02:07:21 pm
Nice catch & assist from Scott.
looking forward to the video.
Post by: classixs on May 02, 2019, 01:59:06 pm
Scott orchestrated initial purchase and reshipping, and for that i am eternally grateful. Thank you my friend, MUCH appreciated !!!
I just ripped it out of the box, and shot these pics as is, but am certain that some simple cleaning, will bring this one back to as new condition.
Datewise it´s an early 80´s Jensen 20 as far as i can tell, and the "special" part about it, would be the blue anodized generator, combined with a #20 engine sporting a "valve stem stuffing box".
[attachimg=5]
Comparison pics of the engine itself:
The rear end of the piston valve bore is plugged.
[attachimg=2]
The "stuffing box" and 2 rivets/2 screws in side of steamchest.
[attachimg=3]
Standard #20 engine, with no "stuffing box" (please take my word for that), 3 rivets in the steamchest, and open piston valve bore:
[attachimg=4]