Topic: Speedometer

Originally sent by: Lee Boekhout Hi Peter, After I sent the initial message, I found a conversion table on the net, which calculated that 48.6 mph to 72.2 kph. While no where near the speed record, it's still scootin' for such a small cart. Believe me. If I thought I had gone 107 kph, I probably would have parked it right there. And again, that figure was obtained from my GPS.

Originally sent by: ben Well thanks guys,I tried 960 last night, but I don't think that this was an accurate reading, I am going to change it to 982 & check it against Kems GPS, I am not shore how you guys get good readings if there is no slandered as to the exact figure that this offset figure should set to?

Originally sent by: nonerd The simplest way is the place your front wheel on the ground with the valve stem in a virtical positon. Mark the point on the surface you are using. Move the wheel forward one revolution until the valve stem is again in a vertical position and and again mark the surface.Measure the distance between the marks and this will give you the circumference. Allow a couple of mm for deflection of the tire under load.

Originally sent by: nonerd Hi Ben, The 'official' circumference of the Blokart front wheel is 982mm. This allows for a small deflection of the tire surface under load.

Originally sent by: Les martin Hi Paul i have set my speedo computor at 1018mm is this not correct, i put mark on my front wheel used a tape measure in inches it came to 13 inches ,1018mm.

Originally sent by: ben Hi Paul, Ive used some glue to stick the magnet to the outside of the out thr plastic rim, is the the rigth place? Thanks ben

Originally sent by: Dave Pearson Will depend to some extent on the tire pressure and the weight the cart is when loaded up. I measured the distance on the ground with one rotation of the tire. Cant remember the distance I have set.

Originally sent by: nonerd Mike Lansdown, formerly of Windspeed Hawkes Bay and now of Auckland, is an electronics tech, who converts the 'Smart' brand cycle computer specifically for blokarts. I understand that the main part of the conversion is the replacement of the standard cable with a foil sheilded cable of appropriate length, (1300mm approx) which is then fed through polythene tubing for added protection.

Originally sent by: Marty Hi Denis I picked up a 'Smart' brand computer from DSE in Botany yesterday – it was the only brand they had that I could see. Also $36, it's in a lime green box and the only place the brand appears is on the actual unit visible though the window on the front of the box. The Box just says "3 in 1 Cycle Computer – model F9116". They had about 3 or 4 left yesterday afternoon.