Yamaha 8HP T8ELHD Prop Question


Yamaha 8HP T8ELHD Prop Question | Outboard engine propeller problem is rare in the discussion on any blog or website that you may rarely have problems, but once if you deal with it is quite complicated in the finish as well. 

I found the problem to the selection of appropriate fan model 2005 model year 4stroke Yamaha outboard 8HP T8ELHD on a small boat model I 3.20 vs AB, the slope of 10 "6", LWL 9 ", 750 pounds normal shift, the maximum displacement of 1400 poundsStandard size propellers for outboard Yamaha model is 11-3/4 "x 5-3/4" - R, 7 dental splints, model-96GF-EL 45941-00.

I believe, it seems confirmed by the calculation of the fan, that this combination of outboard / fan is a high core unit designed for heavier displacement boats from the boat. According to calculations of experts, the model must have a fan the size of 11-3/4 "x 11.5"-R. However when I refer to my online can not find the fan approaching this size. 

Yamaha also advertise the fan 1 F8 outboard with gear ratios around 2:01, when I could not find any advertising for T8 outboard with gear ratio around 03:01. But with the help of expert advice and my own research I have found a way eventually deadlock. 
   
I noticed that the easiest way to check the ratio is to remove the plug put a mark on the flywheel, spinning and revolution count to make one rotation prop. The best way to estimate the prop pitch is to get tach (tinytach will do). Does the test light running and get the rpm and hoped it would speed up the aircraft if it can get a seat in the middle. Is the shape of the hull is a plane. 

Many dinghy have a lot of rock star and not doing a good aircraft. Hull is designed to operate well at the end of the rope. Although the diameter is usually not directly affect the pitch / prop selection at nearly 12 "in hp 8 very large and the field numbers reflect that. A the late 50 hp with a ratio of 2.42 has a 11 3/4" X 12 "in the middle of the prop list. 

Did this guide help you? I hope some of it is yes. Perhaps more serious discussion can be done here, not much or even just a little, we will be something for the share.
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