Author Topic: A portable steam engine  (Read 69199 times)

Offline Firebird

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Re: A portable steam engine
« Reply #195 on: March 25, 2016, 09:21:23 PM »
Hi

With my bending rolls project on hold due to the broken tap I have had an afternoon back on the portable. Six holes are drilled in the new saddle, this method using the rotary table ensures the holes are at 90



Then with a 1/8" cutter the saddle is cut out





Thats better



The sides are silver soldered to the saddle



This new gas kit makes silver soldering thicker steel parts easy



On to the bronze bushes. A piece of the sintered bronze is machined square to 5/8"





Find the centre and centre drill



Set up in the 4 jaw



Drill and ream 8mm



Cheers

Rich

Offline mal webber

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Re: A portable steam engine
« Reply #196 on: March 26, 2016, 12:40:18 AM »
Really nice build there ,a car wheel cylinder turned into a steam cylinder good work  :ThumbsUp:

Offline Firebird

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Re: A portable steam engine
« Reply #197 on: March 26, 2016, 05:29:43 PM »
Hi

Thanks Mal. The brake cylinders machine beautifully and have a bore honed far better than i could achieve.

I finished the bronze bushes today

Make a mandrel, 8mm



Mount the bush and turn down to 1/2" in 2 places. You can't see the cutter but because the crank support is made from 5/16" steel I simply sharpened a piece of 5/16" tool steel to a square end and plunged in.



Testing for fit with one of the caps



Cut the piece in half and turn each bush to size



A trial fit with the crank



Cheers

Rich




Offline mal webber

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Re: A portable steam engine
« Reply #198 on: March 27, 2016, 04:54:10 PM »
Looking very nice good work on them bearing blocks

Mal.

Offline Firebird

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Re: A portable steam engine
« Reply #199 on: April 02, 2016, 07:31:38 PM »
Hi

Thanks Mal

Not much to report this week, just made some fillets and stuck them in with car body filler.



Cheers

Rich

Offline Firebird

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Re: A portable steam engine
« Reply #200 on: April 03, 2016, 05:09:57 PM »
Hi

The filler hardened over night and was cleaned up with the small rotary tool and sandpaper. It took a couple of hours of sanding to get to this stage



I spotted a few blemishes so applied more filler



Then sanded down again.

Followed by a quick coat of spray primer



Mounted on the boiler, looks ok



Cheers

Rich

Offline mal webber

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Re: A portable steam engine
« Reply #201 on: April 03, 2016, 05:59:22 PM »
Hi that part turned out very nice looks great.

Mal.

Offline Roger B

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Re: A portable steam engine
« Reply #202 on: April 03, 2016, 06:23:31 PM »
Looks good to me  :ThumbsUp:  :ThumbsUp:
Best regards

Roger

Online crueby

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Re: A portable steam engine
« Reply #203 on: April 03, 2016, 08:48:44 PM »
The body filler holds up to the heat from the boiler okay? Does it take a particular type?

Looking great, following along on the build...  :popcorn:

Offline Firebird

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Re: A portable steam engine
« Reply #204 on: April 04, 2016, 07:48:12 PM »
Hi

Thanks Mal and Roger.

Crueby, its just regular body filler. The bonnet ( or hood to our USA members) of a car gets pretty hot, especially on a summers day and the filler stands up to the heat ok so I think it will be ok.

Cheers

Rich

Offline Firebird

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Re: A portable steam engine
« Reply #205 on: April 17, 2016, 08:53:12 AM »
Hi

A bit of filing and fettling to give clearance for the crank



Mounted on the test rig. I have made a new slide valve rod, one end with left hand thread to aid adjustment.

A bit of video


Cheers

Rich

Offline zeeprogrammer

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Re: A portable steam engine
« Reply #206 on: April 17, 2016, 11:38:53 AM »
Looks excellent Rich. Nice motion too.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline Don1966

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Re: A portable steam engine
« Reply #207 on: April 17, 2016, 06:24:48 PM »
Beautiful motion Rich and nice fabrication work......... :ThumbsUp:

Don

Offline mal webber

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Re: A portable steam engine
« Reply #208 on: April 17, 2016, 08:40:57 PM »
That looks very smooth turning over nice job.

Mal.

Offline joe d

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Re: A portable steam engine
« Reply #209 on: April 17, 2016, 08:57:52 PM »
Looking good,  Rich :ThumbsUp:

Cheers, Joe