Originally Posted by
Lille-bror
Hi.
Nitro needs A LOT more oxygen to explode compared to methanol. That is why you have to lean the HSN, when you eg. go from 25% nitro fuel to 16%.
An engine will always use X amount of oxygen at a certain RPM, no matter what fuel you use (more nitro gives no more RPM's). That is why you have to mix more high nitro percent fuel with the oxygen, to make it explode.
RB makes 45% fuel and says it will make longer runtimes compared to lower nitro percents. The only reason why that should be true is, that the fuel will make a more powerfull engine, where you don't have to open the throttle as much as with less nitro fuel, to get the same power...
I would go for less nitro (25% instead of 30%). Your engine will last longer and you save a lot of money.
Cheers
actually nitro needs 1/7th the amount of O2 to burn then methanol..... that is why Nitro has so much more capacity to make power..... even tho nitro actually has half the BTU's of methanol you can burn so much more nitro that you end up making more power... As you say an engines O2 intake is pretty much fixxed, so the only way you can make more power is find a fuel that requires the least amount of O2 to combust........