Gene Heskett wrote: > On Thursday 15 January 2009, Tom wrote: > >> Tom <kestrel...@...> writes: >> >> Sorry for the repeated image. That was supposed to be... >> >> http://www.foxpointdesign.com/cnc_stuff/ttclamp1-sm.jpg >> >> Tom >> > > I have to say that is absolutely beautiful work, Tom. You should be proud to > display it to potential customers, and they should likewise be impressed. > > But since I'm an old biker myself, I would never install a part like that on > my bike, I have first hand seen the results of a broken one. At about 45mph. > > At first we thought he would be in a wheelchair the rest of his life, but he > never made it from the bed to the wheelchair. That part needs more mass, > lots more. > Yeah, there are real risks in making motor vehicle components. I can't say anything from experience about motorcycle parts, but aluminum is prone to stress cracking and fatigue failures. It seems the front fork assembly has to be one of the most highly stressed parts of the bike, too. This is for a ** V8 ** bike? Is this a showpiece, or something somebody is going to ride a lot?
The milling of parts like this tends to leave sharp inside corners that worsens the problem. You might be able to get a stronger part by using a bull-nose end mill to get rid of the sharp corners. Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
