Kozo K-27 build thread

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

Moderators: Harold_V, WJH, hwboivin3

SilverSanJuan
Posts: 251
Joined: Tue May 11, 2010 9:28 pm
Location: Upstate NY

Re: Kozo K-27 build thread

Post by SilverSanJuan » Wed Sep 04, 2013 10:19 pm

Curtis_F wrote:Todd,

The guy making the master pattern for Marty seriously dropped the ball, so he only received the pattern recently. I would suspect that his foundry has it by now and is working on making copies and board mounting.

Cheers,
Curtis F.
Thanks Curtis. :)

User avatar
Andypullen
Posts: 2011
Joined: Thu May 22, 2003 8:17 am
Location: Bel Air, MD

Re: Kozo K-27 build thread

Post by Andypullen » Thu Sep 05, 2013 7:20 am

Harold_V wrote:
Andypullen wrote:I'm going to key mine because I don't trust loctite. I know....I'm probably going to get some flack for that comment. It's all in the prep....
No flack from me. I share your views, in spite of the fact I've used LocTite, and know it works.

It has been (and is) my opinion, --that if you have the necessary skill level to do the work without using glue, avoid its use. One achieves and maintains such skills by doing---which, if avoided, is soon lost.

Harold
I've used loctite for years. Properly prepped, with the proper clearances and set to cure properly, it's fine. Many pump shafts with bronze sleeves for the seal rings were assembled with sleeve retainer.

Kozo shows in the article to let the axles and cranks cure in the horizontal position. At my previous job, we had the loctite people come in and give a "class" on the proper preperation and use of their product. According to that instructor; you want to let the sleeve retainer cure in the vertical position so gravity won't draw the adhesive to the bottom side. Your parts could run out if the clearances are too great.

I had a locomotive in my shop several years ago that the customer had started. He had assembled the tender trucks and I had to dis-assemble them to apply brake rigging to them. While they were apart; I tapered the treads on the wheels and cleaned up the flanges, why he hadn't done that, I don't know. But, one of the wheels was running out by about .01". I looked closer at it and there was a glob of loctite holding the wheel on the axle on one side of the bore. He had cut the axle too small and figured that the excess loctite would hold it. A new axle was made and everything was refitted.

Harold's right. Strive for good fits and finishes and all will go together as it should. I use gauge pins to size bores in the lathe and make the shaft .001" over the pin size and get a nice press fit that way.

Andy Pullen
Clausing 10x24, Sheldon 12" shaper, ProtoTrak AGE-2 control cnc on a BP clone, Reed Prentice 14" x 30", Sanford MG 610 surface grinder, Kalamazoo 610 bandsaw.

User avatar
Sandiapaul
Posts: 416
Joined: Wed Jan 07, 2004 8:04 am
Location: Princeton, NJ

Re: Kozo K-27 build thread

Post by Sandiapaul » Sat Sep 07, 2013 7:22 am

Andy is right about the position for the Loctite to cure, I had the same kind of class.
Funny about Loctite...I use it all the time in my "paying" work, but for this I'd rather not!

Paul

User avatar
JohnHudak
Posts: 1083
Joined: Sat Jan 04, 2003 2:18 pm
Location: Ohio

Re: Kozo K-27 build thread

Post by JohnHudak » Sun Sep 15, 2013 10:36 am

Im doing my axle boxes a little differently than Kozo did.. I had a length of 5/8" x 1 1/2" brass that I machined down to the metric dimensions, then cut each block out individually. I used the stop on the mill vise, and machined each one to it's dimensions..
here are some pics..
John
Attachments
DSCN1034.JPG
DSCN1035.JPG

User avatar
JohnHudak
Posts: 1083
Joined: Sat Jan 04, 2003 2:18 pm
Location: Ohio

Re: Kozo K-27 build thread

Post by JohnHudak » Sun Sep 15, 2013 10:44 am

And the blocks all bolted together, and ready for boring... I used 4-40 x 5/8" bolts..
John
Attachments
image.jpg

SilverSanJuan
Posts: 251
Joined: Tue May 11, 2010 9:28 pm
Location: Upstate NY

Re: Kozo K-27 build thread

Post by SilverSanJuan » Mon Sep 16, 2013 8:46 am

Lookin' good, John!

Todd

User avatar
Pipescs
Posts: 1885
Joined: Wed Feb 03, 2010 10:16 pm
Location: Lester Alabama

Re: Kozo K-27 build thread

Post by Pipescs » Wed Sep 18, 2013 2:17 pm

Unrelated question

Does anyone sell plans and castings today for a 7.5 gauge K-27?
Charlie Pipes
USMC Retired

Current Projects:

2.5 Baldwin 2-4-2/2-4-4/0-4-4 Conversion (What ever)
Little Engines American Restoration
Bobber Caboose

User avatar
Andypullen
Posts: 2011
Joined: Thu May 22, 2003 8:17 am
Location: Bel Air, MD

Re: Kozo K-27 build thread

Post by Andypullen » Wed Sep 18, 2013 4:31 pm

Pipescs wrote:Unrelated question

Does anyone sell plans and castings today for a 7.5 gauge K-27?
I believe Richard Ulin does. Harlock (Mike Massee) posted a video of one.

Andy Pullen
Clausing 10x24, Sheldon 12" shaper, ProtoTrak AGE-2 control cnc on a BP clone, Reed Prentice 14" x 30", Sanford MG 610 surface grinder, Kalamazoo 610 bandsaw.

redneckalbertan
Posts: 1275
Joined: Thu Nov 01, 2012 10:39 am
Location: South Central Alberta

Re: Kozo K-27 build thread

Post by redneckalbertan » Wed Sep 18, 2013 8:05 pm

There is one featured in Mike's Flintridge and Portolla Valley video, I believe it is Richard Ulin's 2.5" to the foot.
http://m.youtube.com/watch?v=-c0oOaJEaEo
one of my favourite you tube movies!


User avatar
Pipescs
Posts: 1885
Joined: Wed Feb 03, 2010 10:16 pm
Location: Lester Alabama

Re: Kozo K-27 build thread

Post by Pipescs » Thu Sep 19, 2013 5:28 am

It was just a curiosity question, let's not pirate this great build thread.

Not my scale but I have learned so much from the Kozo Books I am looking forward to following this group.
Charlie Pipes
USMC Retired

Current Projects:

2.5 Baldwin 2-4-2/2-4-4/0-4-4 Conversion (What ever)
Little Engines American Restoration
Bobber Caboose

User avatar
JohnHudak
Posts: 1083
Joined: Sat Jan 04, 2003 2:18 pm
Location: Ohio

Re: Kozo K-27 build thread

Post by JohnHudak » Sun Sep 29, 2013 11:00 am

Here's the cranks being reamed on a fixture, the same fixture will be used to profile the cranks, and machine the round boss on the cranks..
John
Attachments
DSCN1036.JPG

Mountaineer
Posts: 150
Joined: Sun Dec 02, 2007 4:45 pm
Location: Canada

Re: Kozo K-27 build thread

Post by Mountaineer » Fri Oct 04, 2013 10:03 am

Wondering if anyone has made castings for K27 coupled wheels yet?

Mountaineer

Post Reply