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Elbow Engine
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sbwhart:

--- Quote from: bogstandard on March 06, 2009, 09:32:08 PM ---

Of course it was an open day and we had all the railway anoraks there. When a large gang of them had gathered to watch us display, I started an impromptu auction and got 10 squid for it, for our favourite charity, the R.N.L.I.

I should have looked around for a few more.


--- End quote ---

He He. On that basis I picked up 40 squids worth, there was a load more but my pockets were a bit full:- how much do you recon they'd go for if we spun a yarn that they came from the original Rainhill track  :ddb: :ddb: :ddb:

Cheers

Stew
Xldevil:

--- Quote from: sbwhart on March 01, 2009, 12:10:54 PM --- a small squirt of bog water improving the surface finish.


--- End quote ---

Hello.
Now that I´m no native speaker and because I couldn´t find a good translation for "bog water".
What is it ?
Thanks,Ralph
sbwhart:
Hi Ralph

Its extracted from fish oil otherwise known as WD40.

But keep it quite I'm trying to keep it secret  :lol:

Cheers

Stew


sbwhart:
Fly Wheel Hub

To clean up the back face a 10 mm Dia mandrel was turned up and the disc mounted on it and the face cleaned up with a bit of “Bog Water” (WD 40) whilst on the mandrel both sides of the disc were given a polish with some scotch bright.



Now for the rotary table work: - My small Vertex table can be used with index plates, but I chose not to use the plate.

The wheel was drawn up on CAD and the off sets coordinates and angle marked on the drawing, as I’m making two wheels of slightly different sizes each size fly wheel was drawn up.





As I don’t have a chuck to fit my table, I modified the arbour used to skim up the back to fit in my table. The table has a M2 taper in the centre, the mandrel was trued up in the lathe and the cross slide moved to 1.5 deg and a short step turned on the mandrel to fit the table, and a M5 hole drilled an tapped to take a cap screw through the bottom of the table.  A rough circle of wood was used as a sacrificial plate; the holes in the wood were on free offer when the wood was bought.



A centre was put into the mill and wound hard into the centre in the end of the mandrel and the Table and the X and Y datum’s zeroed.



Working round clockwise the corner holes were drilled 6.5 dia

With an 8mm dia slot drill the straight sides were machined in one cut:- taking care to feed the cutter the correct way.

Followed by the curve sides.





The hub will be shrunk into the rim   :thumbup:

That was fun   :D

Cheers
 :wave:
Stew


Stilldrillin:
Nicely done Stew!  :clap:

Thanks for showing.....  :thumbup:

David.
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