This kind of "devices" appear from times to times and disappear before claims increase too much...they are around for decades and nobody had won races or had real (measurable) savings until today.
Important to know what really took to this bolt failture. (Shear, threads stripped off, overtorque, hidrogen inclusion, fadigue....) not all of them are manufacture fault.
I can see a standard here. On enduro honda have the heaviest bikes too. It's cheaper to develop and produce. (Or you can develop and forget for decades)
Any oil: Engines have more compression life and power around 4% mix....
Trials engine doesnt get as hot (inside chamber) as high rev engines. So oil for trials can have lower flash point (this is related to unburned exhaust oil. And choosing oil ratio based on pipe spoonge without considering flash point can be a mistake )
It is important to have a safety margin on your oil ratio. There always a road or a big hill in our ride.
Managed to broke a rib in a competition two weeks ago while ridding my other sherco. (It was a hard enduro event with a trials class.)
Back to Exhaust thing, rode the bike yesterday. Spend a gas tank in easyer trails and unpaved roads (since still have some pain). Bike run greath, can't put my gloved hand on exaust for more than 5 seconds but at least nothing melted. It's useable at least.
2018 beta
in Beta
Posted
This is what I found about twin spark at Leonelli site. Seems like an effort to burn all the fuel on the chamber.