Saito Steam Engine

[ir3]

Hello Derek and PD's,

The Y2DR just arrived. Rather timely I would say. My fireboat is just about complete and I plan on starting the Delta Queen in the next week or so. Derek, did you get a chance to fire up your Y2DR and if I missed something, what model do you plan on using it in.

Happy Holidays to all,

Iran

[derekwarner_decoy]

merry Christmas to all this 25/12.....ir3...... ....I have not steamed the Y2DR...just trialed on compressed air

massive torque on approx 5PSI.... ......at this stage I plan to rename PS Decoy to PS Goolwa and remove the JMC 3H chain drive engine & use the Y2DR direct drive 

Our colleague kno3 has shamed me  with my build slowness but 

Some photos of my build under Photo Gallery/Member Gallery/derekwarner_decoy 

http://www.paddleducks.co.uk/smf/index.php?action=gallery;su=user;u=17

Naturally the boiler/gas tank/condensor & bits & pieces will be lowered into the hull, but the Y2DR will be on axis with the current paddle axis etc......

I am on night shift this week performing hydraulic audits in a far off steel mill  ..,..& it sure is a funny way to spend Christmas 

Again I am very interested on the recommended drive ratio for your Y2DR  + DQ...& please come back with your initial comments or thoughts of your Y2DR ......................Derek
 

[derekwarner_decoy]

mmmm .back in Wollongong PD's & need a holiday so today I.....

1. cut the Y2DR lubricator line in 1/2
2. filed a few bits.... ....
3. added an o-ring flange set  ...courtesy from Winfried
4. added the new Winfried lubricator....but just for dummy snaps  .....Derek

PS...interestingly.....the M2 hex head screws on the original Saito build have the identical M3 AF or 'SW' of the bolts produced by Winfried for the flanges...........

[Eddy Matthews]

I've always like the look of the Saito engine Derek, but the $64000 dollar question is, will Decoy actually see the water this time when the steamplant is fitted?

It must be over 10 years since you first started the model!

Regards
Eddy

[derekwarner_decoy]

Hi PD's  ....& yes Eddy it is 10 years & 10 months since my project commenced 
Must not rush these things....but I have had the pleasure of logging on to PD's each day for some 4,000 [four thousand] days in the process  ........Derek

[kno3]

Derek, the flange looks good, but what is its purpose?

Since you asked about driving ratio for the Y2DR Saito: use direct drive, it has enough torque and it will use up less steam.

[derekwarner_decoy]

kno3.....mmmmmmmm

1. I did not like the angle of the original steam entry tube going down hill between each of the cylinders....
2. so decided to alter or square it up
3. with the two fixed points between the cylinder ports, the only way was to cut the tube.....attempt to decrease the tube bend radius to the STDB cylinder & the rejoin the 4 mm OD tube
4. I also wanted to get a new Niggle quartz tubed lubricator with the bottom mounted discharge needle valve so decided to order 16/4/2.2 flanges from Winfried but with VITON o-rings & not gaskets
5. my order from Winfried arrived & whilst I ordered  16/4/2.2.... I also added.../5 which is five bolt....my fault...as my preference was for /4...four bolt
6. I also can use approx three more [5/32"] 4 mm tube connections for water & steam so thought the flange sets look a little more authentic & they are as cost competative as the conventional union+cone+nut connections etc
7.  The quality of the components from Winfried is again excellent .....Derek

PS...attachment is looking from stern FWD on the Y2DR ....I have achieved the squarness of the 4 mm steam entry tube
PPS.....the flange set is not soldered yet so is not truely square........
PPPS....yes I have taken your earlier suggestion on board.....& the Y2DR will be direct drive 

[derekwarner_decoy]

Hi PD's......I posted the following note to Crewe Engineering..... ........ I will keep you posted.... ....Derek 
_________________________________________________________________________________________________

From: Derek Warner [mailto:dlwarner@bigpond.net.au]
Sent: Saturday, 22 January 2011 12:32 PM
To: 'John Moore'; bogster@.....
Subject: Extra Bits for OZ

Hi John… I hope this note finds you & the family well….

I have managed to acquire a twenty year old [never used] Saito Y2DY horizontal paddler engine ….from all reports on Paddleducks & Mayhem the Saito quality is great but am not impressed with a few things namely the steam inlet & outlet tubing bends

Question 1…..is it possible to produce a straight  brass tube 7.5 OD x 6.0 ID x approx 75 mm long?

If the answer is yes……..I would like to order

One x 7.5 OD x 6.0 ID straight standpipe x approx 75 mm long
One x 7.5 OD x 6.0 ID straight standpipe x approx 65 mm long
Four x 4.0 OD x 2.0 ID stand pipes approx 20 mm long with a 6 OD x 2.5 wide sealing ring including the 30 degree angular face
Four x 9.0 OD x 7.5 ID x 8 wide reinforcement rings
Two x 9.0 OD x 6.0 ID x 2.0 wide spigoted flange width solder caps
Two x 9.0 OD x 7.5 ID x 2.0 wide flange rings

If the answer to Question 1 = YES I will knock up a few sketches ……………….Derek
 

[ir3]

Hi PD's, Derek,

I still have not started the Delta Queen and have not gotten to the dimensions that you are interested in  . I am totally bogged down with the fireboat getting all the animation to work.  My latest problem was a faulty Robbe RX which kept me busy trying to solve  . I am now just about finished.

I am watching with great interest your mods to the Y2DR. Would you recommend that I do the same?

I hope the Smiley's work. I have a devil of a time trying to get them in.

[derekwarner_decoy]

Hullo PD's....just a few more days to our national Australia day where we give humble thanks to our great land full of fires one day & floods the next 

ir3.....

1. the only reason I propose to modify the Y2DR steam inlet & outlet tubing bends...is that they wil be on full view & the originals look poor 
2. every image available on the WEB of a Y2DR displays the original lubricator as bent off axis [bad design packaging] so this started the ball rolling  ...the addition of the quartz tubed Niggle lubrication is the best insurance I could use considering the cost of the engine...you don't need to guess the water/oil balance remaining...you just see it 
3. having said all of this, if your DQ build does not have an exposed engine I would not bother with the inlet & outlet tubing mods......Derek

PS...yes I am sure the similies do help 

[kiwimodeller]

Derek, the paddler engine you bought is still listed on the website and I am seriously tempted to order one also if they still have one in stock. It is a toss up between the paddler engine and one of the vertical twins they have listed. Do you know what the difference is between the two different twins on that site? I knew Saito did slide valve and and piston valve vertical twins but these are both slide valve, both 12mm x 12mm but with different looking reversing gear. Any ideas on which models they are? The website does not list model numbers. Thanks, Ian.

[kno3]

The Saito twins have different stroke. The T2DR has 12 mm and the T2DR-L 20 mm. The L seems to stand for long stroke.
You can find this info here on the Saito website http://www.saito-mfg.com/steamengine.htm

[kiwimodeller]

Thanks for the link Kno but I could not get it to load properly so I could not read the figures. What I could see on that site is a listing for the T2DR and the T2DR - L as you say but there is also listed a T2GR and this is what I was seeking information about. Some years ago I also owned a T2 which had piston valves not slide valves but still was not set up with reversing gear. Hopefully somebody will let us know what the difference is between the "D" and the "G" models. I have emailed the website in Australia too so I will post their reply when I get it. Cheers, Ian.

[Eddy Matthews]

Ian, the T2GR is 20mm bore and 20mm stroke.....

A photo is attached below....

Regards
Eddy

[kno3]

Yes that's the one. Much larger than the other two and would probably need a very powerful boiler.