CNW J class Mikado

Where users can chronicle their builds. Start one thread and continue to add on to it.

Moderator: Harold_V

User avatar
PeterCraymer
Posts: 222
Joined: Thu Oct 02, 2003 6:57 am
Location: Maysville, Ga.

Re: CNW J class Mikado

Post by PeterCraymer »

Tim,

Great info! Thanks a lot. Ouch on the mold printing. I figured it wasn't cheap but $4k?!! Wow!

This may just be the ticket. I am assuming that as written on the pattern, they just made up all the molds and did a single melt/pour on all 8 pieces?

Peter
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

The foundry pours a lot of different metals. They wait until they have a number of items to pore to make it more cost effective.

They should be poring a test cylinder this week. if it works this time they will pore 3 more.

Tim

Tim
PeterCraymer wrote:Tim,

Great info! Thanks a lot. Ouch on the mold printing. I figured it wasn't cheap but $4k?!! Wow!

This may just be the ticket. I am assuming that as written on the pattern, they just made up all the molds and did a single melt/pour on all 8 pieces?

Peter
He who dies with the most unfinished projects: Should of put more time into their hobby.
User avatar
PeterCraymer
Posts: 222
Joined: Thu Oct 02, 2003 6:57 am
Location: Maysville, Ga.

Re: CNW J class Mikado

Post by PeterCraymer »

Tim,

Thanks for answering all these questions.
Did you use cast iron or grey iron for the wheels?
You mentioned .100" for shrinkage. Was that for diameter only?
What did you do for the thickness?

Thanks,
Peter
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

Hi Peter

I drew the wheels full size to the drawing, adding 1 inch to the surfaces that would be machined and making sure I had the correct draft. Then I scaled the drawing, in my case multiply by 0.133333 for 1.6" scale. Then multiply by 1.00833 for the shrinkage. The casting came out right on size leaving me just over 1/8" for machining.

Tim
He who dies with the most unfinished projects: Should of put more time into their hobby.
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

When I was at the foundry picking up my drivers I was able to take a picture of the mold with cores installed.
Attachments
Cylinder-Mold-and-Cores.jpg
He who dies with the most unfinished projects: Should of put more time into their hobby.
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

I was able to do a little foundry myself. Here is a picture of the main frame cross tie.

Tim
Attachments
Main Fram Cross tie.JPG
He who dies with the most unfinished projects: Should of put more time into their hobby.
User avatar
PeterCraymer
Posts: 222
Joined: Thu Oct 02, 2003 6:57 am
Location: Maysville, Ga.

Re: CNW J class Mikado

Post by PeterCraymer »

Tim,

Thanks for the details. looks great! I have found someone who may be able to locally print the patterns for me! I just need to get started! I will be following your progress with great interest!

Thanks,

Peter
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

Hi All

Work on the locomotive has been slow, but I have been able to cast the Equalizer Fulcrum and Brake Hangers. Now to get them mounted on the frames.

Tim
Attachments
Equalizer Fulcrum Brake Hangers.JPG
He who dies with the most unfinished projects: Should of put more time into their hobby.
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

Slowly getting the frames machined. Working on the frame extension pockets.

Tim
Attachments
Milling-Pocket.jpg
Milled-Pocket.jpg
He who dies with the most unfinished projects: Should of put more time into their hobby.
Asteamhead
Posts: 582
Joined: Tue Jul 31, 2012 1:59 pm
Location: Germany, Duesseldorf

Re: CNW J class Mikado

Post by Asteamhead »

FLtenwheeler,
Those castings of the hangers and brackets you made are looking great!! :D
Patterns (cylinders) which are containing cores I didn't make myself yet due to their complexity ...
Please continue reporting your progress, thanks!
Asteamhead
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

I have machined the two cross ties that I have cast. I will be poring one more cross tie this weekend. So I am slowly moving forward with the project.

Tim
Attachments
P6190925.JPG
P6190930.JPG
P6190935.JPG
He who dies with the most unfinished projects: Should of put more time into their hobby.
FLtenwheeler
Posts: 1591
Joined: Sun Jan 05, 2003 8:47 am
Location: Florida, on the Lake Wales Ridge

Re: CNW J class Mikado

Post by FLtenwheeler »

I have 2 of the Driver Box Cellars installed. I will be casting this weekend.

Tim
Attachments
P6220944.JPG
He who dies with the most unfinished projects: Should of put more time into their hobby.
Post Reply