The test was less successful than we expected, being let down by both Seagull motors, both had the same sort of misfire and would not reach anywhere near full revs, they needed a lot of choke and a wide throttle.
I contacted John at SOS (save our seagulls) in Essex, England, he suggested there was dirt in the carburetor jet? Cleaning one carb sorted that motor out and it was soon running cleanly and the choke could be opened on firing right away.
The other motor refused to run properly, even after stripping the carb down twice, the only indication I could get was when the fuel bowl was manually over filled, the problem went away untill the fuel level went down, now what? What was this problem all about, well I had already raised the level of the float in the petrol bowl, what else can I now do?
Checking the workshop manual I saw that on the Villiers carburetor page there was one difference between the two carbs on the Seagull motors, the one that ran well had an Air Compensator while the one that still would not run well did not, I wonder ? thought I.
I removed the air compensator from the one motor and fitted it to the motor that would not run properly, it started right away and ran cleanly! So we can now complete the back to back test, this time a blog viewer has also offered me his electric outboard, we can try that off his battery and also a solar panel designed to suit the electric outboard.
How good is this.