ORIGINAL: Herby 1
Strange...I'll have to try one at 40, I have been using 28 and had good results.
The one I put on the MVVS35 was set at 28, ran well....I put a magnet on the other side of the hub and drilled and tapped new holes to mount the sensor...
I ordered a strobe light, which will arrive in a week or two. I also made an ignition test bench with variable motor driving the magnet wheel so I can watch the advance at different rpm. We will know soon what is what.
The 40 degree setup is expained [link=http://www.rcuniverse.com/forum/m_4512017/tm.htm]here[/link], and is consistent with the chinese engines I tested.