This is a cold start, fourth start of the engine. One thing I noticed is that it burns off the prime when it fires, so unlike most reed engines I'm used to, after it fires it needs 2-3 flips with choke on, then choke off and it fires like any other 100cc engine. I'll probably do another cold start vid when we maiden now that I know it needs a few flips after first fire. Makes sense, no reed cage to have residual fuel sitting so once it fires, it's all cleaned out.
Either way, it sure beats the "old" ZDZ starting proceedure that ended in a sweaty mess and a sore shoulder!!! The smoothness of the engine throughout the operating range is pretty amazing for an engine with a total of 12 minutes on it. I'll be pretty excited to get a couple of gallons through this thing and get some RPM data and performance video's.
The biggest thing with the high compression and rotary valve is I was tuning it for low throttle spool up and was not getting there. Joe at ZDZUSA.com told me to hold it at about 1/3 or "just under half" throttle and tune the low so it just barely had some stumble of richness to it. Well, wouln't ya know it worked! Low end spools nice, mid range all the way through high is perfect transition!!!!
I'll get some more cold start and RPM vids after we get a gallon or two through this 112!!
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