Direct drive is unsuitable for Solo. It costs too much time off the line to be made up over the rest of the course , and any unsuccessful starting attempts are very inconvenient for the rest of the paddock. GearheadOtaku can back me up on this.
Direct drive is unsuitable for Solo. It costs too much time off the line to be made up over the rest of the course , and any unsuccessful starting attempts are very inconvenient for the rest of the paddock. GearheadOtaku can back me up on this.
Good to know. The thought had crossed my mind.
Direct drive, like a sprint car?
I feel that there might be some context or background we're missing.
I went to a Detroit Region SCCA autocross today, with my landlord and my kart.
My kart is an older Margay chassis with a Maxter MX-L 100cc watercooled reed valve engine.
It is direct-drive - a sprocket is on the crankshaft, a sprocket's on a fixed carrier on the axle, and a chain connects them.
I usually use a bump-starter wheel - a wheel between the two rear wheels, so you can push the kart up to speed easily and then drop it on the wheels to start the kart. However, the cable broke, and that caused us to DNF one run apiece and then take a mechanical. We then had to use an external starter to start the engine, rev it up, and drop kart and driver onto the track to make it take off.
I had to rev the engine to 18,000+ RPM to get it to start this way, and then it bogged all the way down to 1,500 crossing the starting line before pulling up to speed.
Still got 2nd fastest time of the day, but I agreed with the officials that next time I bring a kart to an autocross, it will be a shifter.
it did look a bit inconvenient to say the least. Getting your time slip at the end of the run in particular. Could you add a clutch somehow?
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