Member postings for GarryC

Thanks Neil.

Cheers

Allan

Day 8.

Turning the Crankshaft shaft.

The shoulder between the two diameters is not as square as it should be I think.

The micrometer readings for the ends of the main diameter came out at 10.95mm for the crank end and 10.97mm for the other - I think beginners luck was at work..The fit in the bearings seems nice - maybe too close.

Turning the small diameter on the shaft.

The shaft, just needing the crosspin hole. (the brown colour is just a reflection..)

Can anyone please tell me if it would be ok to fit the crank to the shaft and then drill through both to fit the crosspin (in the small diameter) or should both be drilled separately - it would seem easier to drill both at the same time? Thanks.

Regards

Allan.

Edited By JasonB on 31/12/2014 15:08:55

Thanks Jason and Neil. Lots of good advice there and things to watch out for in the future..

Regards

Allan

Hi Ian

Yes I may have made a mistake there - the Stuart drawings don't show the rib and is why I removed it - I have since seen a picture of another model with this left on..

I may yet order another crank from Stuart, think I may make a better job of it second time around now..

Regards

Allan

Day 7.

Think I need to take just a couple of thou off the bar supplied for the crankshaft shaft to clean it up and fit the bearings. So I have the bar mounted in the lathe, it has about 5 and a half inches out of the chuck. I've not tried anything that long before. I've managed to set it at the chuck so the dti doesn't move (just a tiny flicker but not moving halfway between the 0.01mm divisions. The tailstock end of the bar has 1 thou deflection over a full revolution but if you slide the dti over the top of the bar for the entire length there is 3 thou difference. It is only a very small (and cheap) Lathe at the end of the day I suppose, I'm hoping that will suffice. I presume I can't take just a couple of thou off the bar though given the 3 thou deflection - have to see how I get on...

(Could someone please yell at me if I'm about to turn a disaster - thanks!)

Cheers

Allan

ps I've just had a thought - I haven't checked the actual diameter of the unturned bar to see how accurate it is end to end - may have something to do with it of course...

Edited By JasonB on 31/12/2014 15:07:22

Thank you both, sounds like I was making it more difficult than it needed to be...

Regards

Allan

Hi Jason

Thanks, I follow all that except how would you get the centres of the two holes horizontal to mark the initial center line through the two bosses - given the shape of the casting. Apologies if that is a silly question - I bet it is!

Thanks again.

Cheers

Allan

Day 6.

The holes put through the crankweb and machined to size. I really struggled with how to mark out the 1 inch hole centres. No square edges to help and the holes at different heights (I drilled through and marked out from the boss side, was I wrong to do that?) - anyway it gave me a real headache. I would love to know how I should have gone about this.

Next have to drill the through hole for the crosspin to attach to the shaft..

Regards

Allan

Edited By JasonB on 31/12/2014 15:06:18

Day 5.

The crankshaft next. It is supplied in 3 parts, the shaft, crankweb and crankpin.

The components as supplied.

Edited By JasonB on 31/12/2014 10:24:52

Edited By JasonB on 31/12/2014 15:05:23

Hi Roy and Neil

Thanks, I had not thought of doing that - but yes that sounds good, I will see what I can find..

Regards

Allan

Day 4.

A little more progress..

Drilled the 'bearing' fixing holes, drilled and tapped the oil holes, removed the split lines at the pedestal base..

Tapping the oil holes.

Oil cups and test fitting the 'bearings' on the base..

Not beautiful but a few lessons learned..

Regards

Allan

Edited By JasonB on 31/12/2014 10:22:08

Hi Norman

Yes I wondered about this. The book I have 'building the Victoria' describes this but suggests that each bearing is supplied already in the two half's. The book is several years though...

I think that for me at the moment I will not complicate things and leave them as one piece! I agree with your comments though.

Something I will look to do on future projects...

Regards

Allan.

Hi Jason

Thanks, it is the diameter of the 'flange' that I found difficult, I may be misunderstanding but are you refferring to it's width, which I was ok with..

I could not understand from where to zero the scale or how to get the distance from the corner of the flat base in the chuck to the ouside diamer of the flange ie. the start point of the cut to turn down the diameter. Hope that makes sense (I have my doubts!).

I used a 11mm reamer for the bore as the hole was so small.

Cheers

Allan

Day 3.

I have struggled a bit with the bearings but they are now ready for drilling the fixing holes and final cleaning..

The first one I did was the most difficult, I made the mistake of not leaving enough protruding from the chuck to turn down the 1/8 'flange' on the bearing (is that the right word?). The result I had to remove and relocate in the chuck and this has I think resulted in a slight taper in the bearing, about 2 thou from one end to the other. Also I could not get my head around how to measure down to the flange. The result on the first bearing was I did not turn it down enough or was unable to repeat the same on the other side. The second one I made a much better job of by turning down to the top of the rounded section of the casting and repeating exactly on each cut. I'm sure there must be a way to have measured exactly. on Bearing no 2 I could not detect any difference (taper) from end to end of the bore and was much happier with this one. I am happy that both bores are at 90 degrees to the base and I have tried an 11mm bar through them and it fits nicely with no detectable slop, to my eye anyway. The crankshaft was supposed to be 11.1mm but I will have to make to 11mm now.

They will not look too bad on the model though when assembled (for a first project attempt anyway..)

I struggle with the dti each time and it takes ages to get runout right but hope this will get easier with practice..

Some pics -

The center of the bore marked out. I used this to bring the tailstock center to the punchmark for initial centering.

Resetting the bore to run true after facing and turning the other side.

Ready for drilling the fixing holes and final cleaning up.

Not the best looking I know but I have learned a lot, which is what this project is all about for me..

I would love to know though how I should have measured the turn down distance to the 'flanges'..

Regards

Allan

Edited By JasonB on 31/12/2014 10:20:42

Thanks for the info Jason and yes I agree the lines need to be sorted...

Regards

Allan

Day 2.

The pedestal machined, drilled and tapped.

Not sure about very slightly counterboring the lower 'floor' holes. The holes are 6mm but for some reason my 6mm counterbore wont fit (I,ve not used a counterbore before, I thought the size referered to the hole size but maybe not?) - as it happens i've tried some bolt heads and they seem to sit nicely flush...

Bearings next..

Regards

Allan.

Edited By JasonB on 31/12/2014 10:18:03

Thanks both.

Bert - I have replied...

Well here goes. My main aim is just to complete the project and learn as much as possible along the way - ready for the next one..

Advice and comments (good or bad) are very very welcome - all the way through..

Day1.

Have machined, drilled and tapped the base..

Please excuse the photo quality, am using a very old iphone..

Edited By JasonB on 31/12/2014 10:14:28

Edited By JasonB on 31/12/2014 10:17:13

Thanks very much everyone. I will be making a start later today...

Regards

Allan

Hello

Sorry I can't seem to find an 'introduction / hello' section - I am a complete novice at Model Engineering but thought I would have a go at creating a 'step by step' of my efforts of building the 'Stuart Victoria' mill engine in the hope of some advice from other members along the way. Would that be ok?

I can see a section called 'Work In Progress and completed items photos' - would that be the right place to start the thread? I am not a great Forum or Computer user..

Thanks - I am 53, retired early and live in Abergavenny, South Wales, anyone local on here - it would be great to hear from you...

Ta very much.

Allan.