Quote:
Originally Posted by SerpentEagle
Friction isn't a problem for us, we use a c-channel for the racing on the lift along with rollers; quite smooth, but I will have to double check for that.
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I think the friction he is talking about isn't just the simple contact friction between the carriage and the channel, but the friction caused by misalignment between the two channels. If your chassis / structure isn't rigid enough, load on the elevator will cause some degree of flex between the two channels, which leads to more friction force. It's not something to be written off, certainly. Good design can help keep a chassis rigid and elevator beams roughly coplanar.