Re: 2 Engines Twice the Vibration?
Recently I saw a show where a guy had 2 V8's in a hot rod, he said his biggest problem was syncing the engines which is extremely important because one engine can/will destroy the other. Now then,,if this would apply to 2 two cycle engines I don't know. he ended hooking up the engines together and were phased to fire opposite of each other.
FWIW Honda used a twin cable throttle control that was controlled by a single cable.