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by 10 Wheeler Rob
Fri Oct 20, 2017 12:08 am
Forum: General Discussion
Topic: Hydrogen Embrittlement
Replies: 12
Views: 333

Re: Hydrogen Embrittlement

I ran into it with some plated split lock washers that would crack in two when tightening the bolt. Spec said they should be capable of being bent to 90 degrees. The manufacture had not baked them after plating.
by 10 Wheeler Rob
Thu Oct 19, 2017 11:59 pm
Forum: Live Steam
Topic: Steam Hose?
Replies: 15
Views: 659

Re: Steam Hose?

We used the parker Teflon with stainless outer braid for two phase steam up to 400 deg F in products where I worked, after 40,000 hours its burst pressure was as good as a new hose. It may not bend as tight as you wish. Burst failures were always at the joint to the fittings in test hoses.
by 10 Wheeler Rob
Thu Oct 19, 2017 11:40 pm
Forum: Live Steam
Topic: Minimum steam space between the piston and cylinder head
Replies: 8
Views: 543

Re: Minimum steam space between the piston and cylinder head

The locomotive is a 7 1/4 or 7/ 1/2 inch gauge 2-4-2 called Mini. It is around 2" scale. Balloon stack, old american 4-4-0 head light and pilot. Stevenson valve gear. 9" dia. drivers. The valve gear linkage needs to be corrected, it assembled with set screws instead of silver soldered or p...
by 10 Wheeler Rob
Sun Oct 15, 2017 8:54 pm
Forum: Live Steam
Topic: Minimum steam space between the piston and cylinder head
Replies: 8
Views: 543

Re: Minimum steam space between the piston and cylinder head

I looked up what is on the Allen Model prints. They have 0.093 nominal clearance when you do the math. I found the heads are machined a little thicker where they pilot into the cylinders than the print dimensions show. So I will correct them to the print dimensions. These cylinders do not have the p...
by 10 Wheeler Rob
Sun Oct 15, 2017 9:36 am
Forum: Live Steam
Topic: Minimum steam space between the piston and cylinder head
Replies: 8
Views: 543

Minimum steam space between the piston and cylinder head

I picked up an locomotive project to finish. Upon inspection I find there is only about .075" clearance between the pistons and the heads of the cylinder. This engine is using 2" dia. Allen Model Cylinders. Is this clearance adequate steam space for proper operation?

Rob
by 10 Wheeler Rob
Wed Oct 11, 2017 2:58 pm
Forum: Live Steam
Topic: Pioneer Valley Blow Down Meet
Replies: 6
Views: 471

Re: Pioneer Valley Blow Down Meet

There were 4 camel backs at the blow down meet.
by 10 Wheeler Rob
Tue Oct 03, 2017 12:48 pm
Forum: Live Steam
Topic: Wood Firing a Chloe
Replies: 23
Views: 1112

Re: Wood Firing a Chloe

An alternative to wood is burn stove corn. It will require the addition of a perforated metal grate, which can sit on top of coal grate if its thin sheet metal. Needs to be feed often like wood, bit the smoke is much more tolerable.
by 10 Wheeler Rob
Tue Oct 03, 2017 12:37 pm
Forum: Live Steam
Topic: Red Line Gauge Glass
Replies: 11
Views: 675

Re: Red Line Gauge Glass

I used Testors model paints for red line painting. Red strip in middle and over painted wide stripe of white. It has stood up well.
by 10 Wheeler Rob
Tue Sep 12, 2017 6:15 am
Forum: General Discussion
Topic: Irma
Replies: 20
Views: 920

Re: Irma

I recently got a place near Lake Wales and the report yesterday from a neighbor was no apparent damage. Power is still out as of this AM.

Hope all is well for others in the affected region.

Rob
by 10 Wheeler Rob
Mon Sep 04, 2017 4:15 pm
Forum: Live Steam
Topic: Boiler Construction Questions
Replies: 25
Views: 2170

Re: Boiler Construction Questions

I recommend to build a straight boiler and build the jacketing to the shaped design. My ten wheeler is made that way and steams very good.
by 10 Wheeler Rob
Fri Aug 11, 2017 11:31 am
Forum: General Discussion
Topic: Getting Bearing out of Electric Motor head
Replies: 9
Views: 1024

Re: Getting Bearing out of Electric Motor head

Very nice solution to the problem.
by 10 Wheeler Rob
Wed Aug 02, 2017 9:55 am
Forum: General Discussion
Topic: Boring a hole
Replies: 10
Views: 667

Re: Boring a hole

You could mill the bore also. Just set rotary table to 0,0 and then off set the hole radius minus 1/2 of end mill diameter. Best to go undersize first and then do a final cut to dimension in climb mill direction on aluminum.

Rob

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