Brassy

Hello again 'Vintafake' fans.....It's time I was giving a progress report...

Looking at the date of the last post you could say "About time Albert !". Well I can assure you I haven't been idle, out there in mi' shed, freezin' cold, all in the name of science....? Yes it's down at 'The Old Sidevalve Bar' that unique motoring creations are born. Oh yes ! Read on to find out what your Uncle Albert did with a brass curtain pole...

The afore mentioned curtain pole had been squirrelled away many years ago by my father. (Known in Pembleton circles as Skid for the fact that he claimed to have travelled more miles sideways than I had travelled forward....Hum ! another likely story) I knew of the existance of this valuable brass curtain pole, it was rumoured to be laying within the underground vaults of the 'Crackleport' family abode in the treacle mining town of Pudsey.

The pole could be just the material I needed to create an Briggs and Stratton inlet manifold of eye catching beauty, a work of art to equal Antioch's Venus de Milo...

Once retrieved from its slumbers it was evident that the inner bore of the pole was exactly the correct size to marry the Amal carb and the cylinder head together. I cut a short length guesstimated to be of the optimum tuning dimension. Also found in the underground vaults was a piece of brass plate, from this was cut 2 mounting flanges to match carb and head.

The jointing medium would be Silver Solder. I ordered a quantity on line and whilst waiting for deilvery bolted all 3 components together to hold firmly whilst soldering. This tip was recommended by Lea Thermallet a follower of 'Oilyracer' blog (which runs alongside these jottings as a record for all time on this monumental build)

Ensure joints are clean, apply flux, heat until flux goes clear, apply silver solder, enough solder to run through joint, allow to cool. Hey ! It all seemed to work out great. Within a short time I had myself a basic manifold. Further polishing required to fully exploit the brass was done first with file, then emery cloth, then Brasso.

So...there you go......another piece of the jigsaw in place........(still plenty to do though !)

More Filing and Turning

So....having got the flywheel back from 'Govi Engineering' I set to with the angle grinder to remove the cooling fin stubs. Once ground flush with the main body of the flywheel I continued with a file, keeping the slight curvature to the outer edge. Then polishing with wet and dry.

It was at this point that my decision to keep the inner boss intact for refitment of the starting pulley obviously was a wrong one. Firstly I didn't need this option and secondly it certainly would look better without.

A trip back to 'Govi Engineering' for a second skim was the answer. Always happy to help 'Kev the Lathe' re-sculptured the centre, leaving a defining lip for esthetical interest. Now if that flywheel doesn't look like it came straight of a 1920's speedway Douglas I don't know what does !

It's not finished yet, more smoothing with wet and dry will be needed before plating but I'm sure you get the idea !

Well...time to lock up 'The Old Sidevalve Bar' fo't night and put t' kettle on.....

Thinwheel/Flywheel/Filingwheel

Ok 'Vintafake' fans....it's update time. Albert here reporting on news from a 'Snowy Old Sidevalve Bar'.

As I mentioned previously it was our intention to skim some of the weight from the 'Briggs and Stratton' flywheel....How much was anyones guess until done....(lets just say we would take it to the max). The flywheel was so large that there was no chance of it fitting in the Crackleport lathe, No !...... this needed a Big Mr Lathe. Just so happens ya Uncle Albert knows the where-abouts of such a piece of kit. Not a million miles away....in fact just in the next valley tucked away amongst the old derelict mills of a market town that in years gone by was the world leader in Tops, Noils, Shoddy and Mungo. Nestled in amongst this ever increasing industrial wasteland lies a small engineering shop. Govi Engineering, known only to a select few, a beacon for British Excellence. .....engineers wi' oil down their fingernails.....with the skill to make anything / anytime.

The route to this Turning, Milling and Welding oasis takes me past the old treacle mines . Being born and bred in the treacle mining town of Pudsey instils on me the knowledge of their location. (It's a secret I must keep.....so no good asking...) Suffice to say there is still a world demand for 'Yorkshire Treacle' and the underground seams are still workable, long may it continue.....

Hey Albert...enough of your ramblings , Get on with the story.........!

Yes readers....So....I'm greeted by 'Kev the Lathe'. A metal magician ! Capable of turning steel bar to gold ! Well not actually gold...but.....unique pieces of metal art !

And that's exactly what happened to the 'Briggs and Stratton' flywheel. Once an overweight bloater....now a sexy shapely beauty......Once weighing in at 7.7 kilo....now a curvy 5.4 kilo !

It wasn't quite possible to skim the full surface due to the afore mentioned need to keep the magneto mount in tact, so final finishing with a grinder and file is required.

Reet Grand !

Albert here - Ya know I can't believe it's nearly a month since my last update. Shame on mi'self !

Eeeh what wi' jotting on the shared blog 'oilyracer' and keeping the peace on't homefront wi' a spot of D.I.Y. !!!!! Enough excuses Albert ! Let's catch up on what's 'appened down at 'The Old Sidevalve Bar'.

Well, the painting of the 'Briggs and Stratton' is now done. Reet Grand it looks too...

So grand in fact it forced me into making some new fittings. First off was a revised breather, forget the recycling into the inlet manifold bollocks...nah....this point's the old greenhouse gases straight t' ground. Made from a bit of 15mm copper pipe that I just happened to have after the D.I.Y. session and a brass electric box fitting, it cost nowt. Second off was mi' dummy oil pipe. Once again made from 2 scrap airline fittings and a length of 8mm copper tubing (left over this time from the Pembleton build many moons ago) Proper bling !

Last but not least...and what a find.....Yes...there was I doing mi' D.I.Y on the new kitchen, and pulling out the old boiler. (Old boiler ? nah..not the missus ! the redundant central heating one !)

There attached to the back were the most gorgeous huge brass fittings......and.....joy.......looking like the same thread as the exhaust port on the 'Briggs and Stratton'....

I wasted no time getting 'um off and giving 'um a polish ! Lucky ? Yep ! The best looking one is now in position and ready for an exhaust pipe, but not any old exhaust pipe...NO ! and trice NO !

An exhaust pipe.....of such magnificence and exuberance that has not been seen before !

Thats all for now folks !

Restoration continued......

The rust killing phosphoric acid was left for at least 3 days on the engine. Mainly due to me having other work but a quick check shortly after the application revealed that the solution had dried on the engine and wouldn't cause any damage.

A rotary wire brush in the electric drill soon removed the black oxide and revealed an ideal surface to apply paint.

Gloss Black Engine Enamel.....just like a Vincent Black Shadow !

Time for a cuppa !

Restoration

We could hardly turn up to the 'Biker Build Off' with a rusty relic....could we ?..?....something had to be done to make our 'Briggs and Stratton' look presentable.

A thorough de-rusting was the obvious first step. The flaked rust was brushed off with a wire brush and the stubborn rust was scrapped off with an old screwdriver. This left a firm base on which to apply my rust killer. I use phosphoric acid that I dilute solutions from, to whatever I deem fit for the job in hand. I started off with a 40% mix. Brushing on with a paintbrush. Several applications saw much of the rust turning but for a final coat I applied a full strength layer. I left this bitting into the rust overnight.

Heres the chemisty - Rust is really Fe2O3, a reddish form of iron oxide. Iron has another oxide, Fe3O4, which is sometimes called black oxide, black rust, or hammerscale.

What a weight

Once the flywheel was released it became apparant just what a weight it was. Surely we don't need ALL that metal thrashing around, I suggested to my fellow Picklington Precision builder Basil K. the other evening (over a flagon of ale down at 'The Sidevalve Bar) that a touch of skimming wouldn't go amiss.
Poor Old B.K...torn between not inflicting any irreversable damage on the 'Briggs and Stratton' and doing what would (or should I say could) give us the edge in the competition. He was undecided, and so it was a few days later I received a change of heart via email -

Well I would of course bow to your superior knowledge re the Whirly things - we don't want to win the great biker build off and then lose a leg on the basis of something that's aesthetically pleasing to the eye - that would never do.

They're extra weight in any case - so if they've got to go , they've got to go.

Chop chop !!

Exciting days what !!

So at some point the flywheel will be modified....just need to find a huge lathe and a lathe man to do it.......