A Bugg's tale of Yamahas and hand grenades

[Robwhi]

The real Andy

Sorry but there can a difference in fuels with the same octane rating. Some fuels are more denser (Specific Gravity) than others at the same octane rating

One of the problems with a high density fuel on a motor without a exhaust 02 sensor is they do not burn the fuel completely

With Sensors they run leaner and use less fuel and run far more advanced ignition hence use less fuel.

One of the reasons In Grand prix Motor Racing they control the fuel is that they can make it a even field as stated getting a denser velocity fuel
you can gain power. F1 went nuts on this years ago and it had to come under control .



One way to check is taste it and the denser Fuel is sweeter. (Just Joking do not try this at home)



Right on with the fresher the fuel the better and also there is less choice now days with fuel supply options

Cheers

[bugman]

I think this has gone on long enough don't you....

And the answer is ........ GEARBOX !!!

Another 150hp Yamaha gearbox bites the dust.

Another one being fitted as we speak and we will be on the water before Xmas.

Shame really I was starting to like the idea of twin 200 Hondas

[lee8sec]

Bugger, 2 gearboxes. What was the failure with the 150 box, hopefully not "no oil" like the 60 ?

[ShaneC]

Thats bad luck mate. I have had a real good run with Yammies. Sold my 150 four strokes with nearly 2000 hrs on them without a significant failure, and man they worked hard. I have a 60 two stroke that has 3500 hrs on it and has never let me down and is seriously going as good as the day I drove it home from the dealership. Would be interesting to find out why you have these dramas. I didnt replace my Yammies with Yammies but that was due to getting a great deal on Hondas. My brand loyalty extends as far as best price and best service but to me the Yams are still a good thing. Did you get a new gearbox or reco the old one???

[The Black Unicorn]

Bugger, 2 gearboxes. What was the failure with the 150 box, hopefully not "no oil" like the 60 ?

How do you not have oil in a gearbox? Did it all leak out?