35cc "V" Twin

[Ghosty]

Hi All,
The crankshaft is now closer. I have gone with the pressed in pin. Machined up jig to machine big end pin hole for both parts. Now to machine crank webs and assemble.
Cheers
Andrew

 

[Ghosty]

Hi All,
For every one watching from home, did not get a lot done today, after waiting at the doctors and then running around to arrange scans on my wrist, only got crank done, went with a press fit assy of crank, will spend tomorrow doing final fit and finish on the crankcase assy. There was a lot of setup time for not a lot of machining in the crank webs.
Cheers
Andrew

 

[gddecker]

How did you machine the counterweights on the crank? Were they done in a mill, or are they separate pieces?

 

[Ghosty]

How did you machine the counterweights on the crank? Were they done in a mill, or are they separate pieces?

The crank webs were machined before assembled, and done with the mill
Cheers
Andrew

 

[c_mario]

Hi Ghosty,
I Just ordered the plans for the exact same engine. I will be sure to keep watching.

 

[Ghosty]

Hi All,
Started on the Cylinder heads, after running around this morning getting things done, I also got the blanks cut, then checked and re squared the mill, and machined two blanks to thickness.
And yes the vice was off the mill when checking, I just set up so can see how.
Cheers
Andrew

 

[Ghosty]

Hi All,
A quick drawing in Autocad 14 and we have the bolt hole layout, have the heads marked out, and then drilled and counter bored, also have the blot hole for the valve rocker mount drilled and tapped.
Cheers
Andrew

 

[Ghosty]

Hi All,
Slow going this morning, had over 2" rain in last 24hrs. Another setup and machining, times 2(many more to go), wobble bar for setup and then machine to fit cylinder. I use copper pads from the PC industry (15mm x 1mm) for smaller parts. Heads sitting on engine.
Cheers
Andrew

 

[Ghosty]

Marked out and machined valve cage pockets and valve spring seats, still waiting on tooling so I can machine out the combustion chamber. This is all for the day as I have a couple of meetings this afternoon.
Cheers
Andrew

 

[Richard-Vanderpol]

Hi All,
Not a lot today, only parted or the rear crank web, now to decide which way to go with the crank. As I have no tooling to be able to cut a 0.5mm slot in the crank web for clamping the big end pin, I need to look at machining the crank pin directly in the crankshaft, or machine a hole and press the crank pin in. Will need to look at each and see which way to go.
Cheers
Andrew

wonderful. want to see more.

 

[Ghosty]

Hi All,
Got a bit more done today, had to make new heads after machining the valve pockets on the wrong side(we all make mistakes). Then machined jig to hold heads for machining out of scrap, then machined out the glow plug holes. Now to start on the inlet and exhaust ports.
Cheers
Andrew

 

[gddecker]

Nice work!

 

[Ghosty]

Hi All,
All 4 valve cages and valves(316SS) are done, waiting in a new 14mm end mill to finish heads, after the one lent out came back broken, did not have time to look at it when returned as I was just leaving to go and see my daughter who was living at Coffs Harbour at the time.
Cheers
Andrew

 

[Ghosty]

Hi All,
Just arrived, now to get on and finish the heads.
Cheers
Andrew

 

[Ghosty]

Hi All,
For all watching from home, have the inlet and exhaust ports done. Centered, then with a 1/8" end mill, spotted the mark(hard to get a pilot drill to drill straight on a sloping surface), then enlarged hole, 14mm end mill counterbore, drilled and tapped hole. Both heads done, will setup and machine cooling fins this arvo.
Cheers
Andrew

 

[Ghosty]

Hi All,
Cylinder heads fins cut, combustion chambers cut, now to check over and debur before fitting valve cages.
Cheers
Andrew

 

[Ghosty]

Hi All,
For all those following from home, I have fitted the valve cages, machined the valve spring retainers, and drilled the ports.
Fitted valves and springs, now at a stand still until I can find another metal supplier as my last has dropped the ball and can't seam to get an order done.
I need some 4mm silver steel, 19mm and 14mm hex 4140 bar.
Cheers
Andrew

 

[Ghosty]

Hi All,
For all wathiching from home, not a lot done, but a lot of different setups. Drilled and tapped the cylinders for the head bolts, machined out the rocker support, needed a piece of scrap from scrap bin to hole the supports for valve spring pockets.
all assembled with all bolts, misplaced(lost) on of the 3mm countersink bolts for the rear plate. Will have to order more.
Had an e-mail from my metal supplier this morning with a new tracking #, maybe this one may turn up. One can only hope.
Can't go any further with it until the material turns up, so tomorrow I will start on the rings, I will finish sizing the cylinders, and then machine the rings.
Cheers
Andrew

 

[Ghosty]

Hi All,
Got out this morning and got the prop washer and lock nut set done, first lock nut was too long, just got the second shorter one done before the rain started again. The nuts still need heat treatment yet.
Cheers
Andrew

 

[Ghosty]

Hi All,
Blue skies here to day, at least for the morning. Got the rings machined, ground the outer size, finished the inner bore, parted of the rings, machined a holder to finish rings, light press fit, will use the holder to lap the outer sides, and finish to fit pistons.
Will post more later.
Cheers
Andrew