The problem with these 'no-timing' speedos is that it transfers the costs to motors and cells, and brings back the problem of too much motor timing giving you a bag full of motor bits. If you want to find a class easy for people to set up, race and have fun with, then follow Bedworth's example and go to 17.5.
The speedos with timing features make the motors perform more efficiently, and it is noticeable that since they came in there have been less blow-ups (dodgy speedo software excluded!) than we had with the early non-timing speedos. It is a better way to derive speed than using motor timing only, which is what people seem to think they want.
No-timing speedos will increase costs, and exclude many from a fast car because they cannot learn the black arts of motor tuning. Keep it as it is. I was right about everyone needing a computer on the pit table when the world clamored for BL, and I;ll be right about this, too. Within short, you'll be back here complaining about costs and motor breakage. 17.5 is the answer you need, not another (expensive) speedo. Just a thought...
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