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| mattinker:
I haven’t been to the Dordoigne for a long time! Full of Britts from what I hear! Nice rolling countryside, and good food! Regards, Matthew |
| mattinker:
Hi, To enable me to finalise the length of the threads and the spindle, I had first to finish off the nuts. Centre finder to place the radial hole in the nut, I did it the other way as well to centre on the edge as well. I centre drilled and then drilled at3.5mm. I mounted the spindle in the Colchester with the fixed steady (three Al tabs to protect the spindle.. I had in between times done some experimenting, using a piece of 30mm cold rolled. The three skate bearings all had a tendency to run slightly tilted, which cut a groove in the test piece! A surprising narrow groove like a pipe cutter cut! I filed the ends of the fingers so that the opposite edges of the wheel touched first, counteracting the tendency to tilt. A bit of hand fitting with a file brought the rollers up straight and got rid of the groove. The other thing that I did was to add twoon gussets to the base, not for strength, but for rigidity. I didn't take any photos of the "development" stage. First operation, trim back the threads to their final length. Drilling out to 16.5mm to begin the 17mm bore for the insert. I am making a system to change the size of the spindle end as I have three sets of change wheels that have different internal bores (12 14 and 16mm), each set also has it's own key size, so I couldn't just use sleeves to change diameters. The spindle is now cut to it's final length, allowing enough length for the locking screw for the interchangeable gear carriers. Way back in the beginning of the thread, I'd drilled the spindle 12mm, the tapping size for14mm, here I'm tapping 14mm for the gear carrier. Having bored out to 17mm and a taper down to 14mm to centre and guide the gear carrier. Using the spindle as a mandrel to centre drill the end of the gear carrier after turning it down to 12mm. Drilling for 6.75, tapping diameter for M8. Tapping M8 for the Gear retaining screw. Gear test fit. 12mm inside Ø Gear carrier, showing taper to allow alignment. So two more gear carriers to make, with their key ways and keys, before I start the banjo. One of my gear "sets" is a plastic one (mini lathe gear set), it looks to me to be better formed than one of the steel sets I have! To be continued! Regards, Matthew |
| Chuck in E. TN:
Great work, Mathew. I'm working on my furnace to be able to make the casting for this and other projects. I like the taper feature on the gear carriers. Chuck |
| mattinker:
Thanks Chuck! It took me a long time to decide how I was going to make the interchangeable gear carriers, that's why I left that end of the shaft as long as possible. I had a vague idea in the beginning, which is why I drilled 14 and 12mm into the shaft, but I hadn't got anything clear. The angle is about 20° which means it's short and not locking. It seems to be working out OK! Regards, Matthew |
| krv3000:
hi its all cuming together |
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