I have a shaper that could cut those ramps fairly easily with some setup tooling.
The rise could be done with a cam made up of a "pipe" cut at an angle with a shaft/axle running up through it that is threaded into that part. Use some die springs to hold the part down against the cam. A couple of index pins and a handle to rotate the cam would work. Gotta think 1921! Manual rotary feed = use a long handle and move slowly. I don't think they could make decent end mills in 1921. Perhaps the same thing could be done with the proper mill cutter - perhaps that dovetail cutter. Rotate the part on an axle with a cam behind it. Dave On 10/13/2014 1:03 PM, andy pugh wrote: > On 13 October 2014 17:55, Gene Heskett <[email protected]> wrote: >> I get the impression the ramps were cut with a straight end mill long axis >> so the cutting on the face was done on the side of the mill, while the >> rotary table was advanced in step. > It is very unlikely to have been done with an end-mill. I don't think > that vertical milling was a common process in 1921. It might have been > horizontally milled. > It is possible to generate exactly the correct shape with a shaper and > an inclined rotary table, and that might be what was used. > > As for the tuning for speed ideas, it would probably need more than > the current 2.5:1 compression ratio too. But with no significant > brakes and most of the suspension built in to the saddle, I don't > think I want it to go any faster. > --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
