A portable steam engine

[Firebird]

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

[mal webber]

Really nice build there ,a car wheel cylinder turned into a steam cylinder good work 

[Firebird]

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

[mal webber]

Looking very nice good work on them bearing blocks

Mal.

[Firebird]

Hi

Thanks Mal

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



Cheers

Rich

[Firebird]

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

[mal webber]

Hi that part turned out very nice looks great.

Mal.

[Roger B]

Looks good to me   

[crueby]

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... 

[Firebird]

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

[Firebird]

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

<a href="https://www.youtube.com/watch?v=1pmcvKxzviA" target="_blank">http://www.youtube.com/watch?v=1pmcvKxzviA</a>

Cheers

Rich

[zeeprogrammer]

Looks excellent Rich. Nice motion too.

[Don1966]

Beautiful motion Rich and nice fabrication work.........

Don

[mal webber]

That looks very smooth turning over nice job.

Mal.

[joe d]

Looking good,  Rich

Cheers, Joe