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 Author | Topic: Building a 5" pannier tank (Read 1,103 times) |
steamingmess
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|  | Building a 5" pannier tank
« Thread Started on Mar 26, 2012, 8:14pm » | |
Evening all
I've just started machining parts to make a 5" pannier tank. This is to be the first loco that i have built as I'm only 19. I was given the frames from a gentlemen in the isle of wight model engineering society about 3 years ago yet i have been restoring a Maid of Kent (which still isn't finished as i need to make a new boiler) and a Sweet Pea which is now up and running 
I have nearly completed the buffer beams for pannier as well as one of the frame stretchers complete. I have now squared off the cylinder block.
I was wondering if anyone out there had any advice on building one of these such as any mistakes on the drawings or easier ways to make certain parts?
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Got: Sweet pea 0-4-2 5"
Restoring: Maid of Kent BR Black
Building: Pannier Tank 0-6-0 LT Maroon
Planning Stage: 7 1/4" gauge LINDA 2-4-0st + t |
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jma1009
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|  | Re: Building a 5" pannier tank
« Reply #1 on Mar 27, 2012, 1:12pm » | |
ive sent a pm to steamingmess with a list of things to watch out for on PANSY
come on folks, he's 19 and could do with a bit of encouragement and help!
im sure lots of you can offer help and advice too on building PANSY!
the pic is my modified PANSY chassis showing the bolt on double rocker arm bearings, cylinder drains, tail rod guides etc.. this chassis runs quiye happily on air at 25-30% cut off in forward and reverse as a result of modifications i made to the valvegear
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steamingmess
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| | Re: Building a 5" pannier tank
« Reply #2 on Mar 27, 2012, 1:20pm » | |
Hi Julian,
Thanks for the email, it made good reading last night. Should help me alot. I never knew you had a pansy. Will be good to keep in touch as will most likely need help on different things and is good to know about problems with the drawings before i get round to making the part
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Got: Sweet pea 0-4-2 5"
Restoring: Maid of Kent BR Black
Building: Pannier Tank 0-6-0 LT Maroon
Planning Stage: 7 1/4" gauge LINDA 2-4-0st + t |
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jma1009
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| | Re: Building a 5" pannier tank
« Reply #3 on Mar 27, 2012, 1:23pm » | |
another pic
cheers,
julian
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jma1009
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| | Re: Building a 5" pannier tank
« Reply #4 on Mar 27, 2012, 1:32pm » | |
mine also has a block silver soldered on top of the cylinders into which a straight blastpipe screws, avoiding the awful bent pipe arrangement LBSC used on MAID OF KENT, MINX, and PANSY.
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springbok
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Building a Thompson Class B1 in 5"g Plus restoring a 3" Fowler steam road Engine "The Wanderer".
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| | Re: Building a 5" pannier tank
« Reply #5 on Mar 27, 2012, 3:48pm » | |
Well done please keep us all posted as to progress
Bob
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Heaven is being in the workshop away from TV
and building my loco's.
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heronsgate
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| | Re: Building a 5" pannier tank
« Reply #6 on Mar 27, 2012, 5:58pm » | |
I built a 'Pansy', also my first locomotive, some 30 years ago. After many miles of hard passenger hauling it is due for a refurb once the latest addition is completed. I have often thought how good it would be to have the cylinder block and driving axle on a sub-frame to allow it to be dropped out for servicing, make for easier valve timing, easier adjustment and just easier all round, any ideas?
Back to the thread, one thing I did learn early on was to omit the axle pump, again due to working room between the frames. having used two injectors from the start I have never had any real problems (also a hand pump on the driving trolley)
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jma1009
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| | Re: Building a 5" pannier tank
« Reply #7 on Mar 27, 2012, 8:23pm » | |
btw i modified the PANSY valvegear on my chassis some 12/13 years ago using Don Ashton's excellent book on stephenson's valvegear. i know Don doesnt like top suspended links, but nevertheless i found it possible to produce quite acceptable valve events by using his invaluable book. probably the most taxing valve arrangement ive had to crack, but i succeeded in the end. LBSC (as well as Don Young) drew out their stephensons valvegear incorrectly, and the weighshaft and rocker arm positions are crucial to good valvegear with rocker arms that reverse the direction of travel. i had driven PANSYs before that couldnt be notched up. the valvegear gives moderately equal leads but a check on the cut offs shows them to be wildly out, hence the problem. i dont claim that my version is perfect, as it was pre computer days in my case, but im happy to provide anyone interested with the version i decided upon after checking my maths exhaustively on the chassis and making minor adjustments.
there is ample room in the steam chest to fit LBSC's usual bar type valve buckle allowing for adjustment doing away with the virtually impossible setting of the valves on the rocker arms as designed. my rocker arms are solid in double bearings, and the lifting link top pin is silver soldered to the lifting link after case hardening the links to add rigidity to the motion. i also think the cylinder bores are oversized at 1.5" as my 5"g GWR Armstrong Goods loco has only 1 3/8" bores and bigger wheels and has no lack of power! (it also had the valvegear made to Don's book, and came 3rd in IMLEC in 1995)
Bob, im afraid my chassis has sat on top of one of my desks untouched for 10 years! so no progress at all! perhaps after STEPNEY is finished i will make the boiler, and im aware of the problems with the LBSC boiler design. my back is twitching after having lugged it outside today to take some photos!
cheers,
julian
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steamingmess
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steamingmess
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Location: Isle of Wight
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steamingmess
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Location: Isle of Wight
| | Re: Building a 5" pannier tank
« Reply #10 on Apr 15, 2012, 8:15pm » | |
starting to machine the cylinder block. the frame stretcher has already been machined to size. just got to mark and drill the holes
Please login to download attachments. |
Got: Sweet pea 0-4-2 5"
Restoring: Maid of Kent BR Black
Building: Pannier Tank 0-6-0 LT Maroon
Planning Stage: 7 1/4" gauge LINDA 2-4-0st + t |
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alasdairm
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| | Re: Building a 5" pannier tank
« Reply #11 on Apr 16, 2012, 7:36am » | |
Great stuff - am following with interest
Regards, Alasdair
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steamingmess
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| | Re: Building a 5" pannier tank
« Reply #12 on Apr 16, 2012, 9:46pm » | |
Hoping to get the frame stretcher drilled and in place in the next day or so. Want to stick with this project. I love the full size version So will be frame stretcher in, then hornblocks and axle boxes with axles, then cylinders with motion plate. I've had a lot of help and knowledge from julian and I'm very thankfull for that. Any other problems with drawings or any tips on building this loco will still be very much welcomed
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Got: Sweet pea 0-4-2 5"
Restoring: Maid of Kent BR Black
Building: Pannier Tank 0-6-0 LT Maroon
Planning Stage: 7 1/4" gauge LINDA 2-4-0st + t |
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nonort
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| | Re: Building a 5" pannier tank
« Reply #13 on Apr 17, 2012, 9:25am » | |
Hi there my own Pannier has been underway for twenty years and more. You will probably finish before me as well. I have modified the vale gear with the outer bearing mentioned here. I corrected the valve events by cranking the rocker arm. I got over the valve adjustment by making the lower part of the rocker arm larger and clamping it to the shaft rather than pin as LBSC was found of doing. The boiler as drawn is to short in the barrel. The superstructure of the cab and tanks is to wide to scale. I start with the drawings and modified as i went along. An article in a magazine provided a Works GA. And a reference book came up with two pictures of the engine that i wanted to model (7761). This threw up more problems than a can of worms. In both pictures the engine is different, the bunker had been changed and it has odd tanks in one picture one has the screw down filler the other has the cam variety. You takes your money you have the choice. Don't rivet the smoke box door front plate in you can't get the super heaters out if you do. I believe that the Bournemouth Society are having a Pannier day sometime this year check their website. What ever you do don't get sidelined as I have.
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jma1009
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| | Re: Building a 5" pannier tank
« Reply #14 on Apr 17, 2012, 9:42am » | |
excellent work! well done!
nice to be able to have access to some decent machinery too.... those of us who struggle with slow laborious flycutting and not very sturdy set ups on a vertical slide in the lathe will no doubt be green with envy!
i machined the wheels of my first loco on a friend's rather ancient LeBlond lathe, and was told to take heavy cuts with a tipped tool... the first cut was the finishing cut! took one afternoon to complete all the work on the wheels ready for fitting!
when you think that the superb loco models that used to be in the science museum (are they still there?) were made on treadle lathes with ordinary carbon steel tools we are very fortunate these days!
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nonort
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| | Re: Building a 5" pannier tank
« Reply #15 on Apr 19, 2012, 12:25pm » | |
Hi the Bournemouth Society's GWR Pannier Day is the 28th July. At the littledown railway.
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