The End of Nitro????
04-19-2014, 10:16 PM
#93
In 1/5 scale, the higher the octane, the greater the losses in horsepower.
With these 5cc gasoline engines, they will get twice the run time with the
same size fuel tank.
Trying to find a pit man for racing is a pain, perhaps it will eliminate the pit man.
Bill M.
With these 5cc gasoline engines, they will get twice the run time with the
same size fuel tank.
Trying to find a pit man for racing is a pain, perhaps it will eliminate the pit man.
Bill M.
Last edited by wmazz; 04-19-2014 at 11:14 PM.
04-19-2014, 10:25 PM
#94
Yeah, that's a problem. Notice how quickly it hits top end. Buggy promo was on a really tight track.
30,000RPM vs 40,000RPM, that's a 25% drop-off in top end. Simply putting a large clutch bell on won't return that ratio, since most existing buggy/truggy
1/8th platforms can only take a couple teeth larger before the engine mount bottoms.
30,000RPM vs 40,000RPM, that's a 25% drop-off in top end. Simply putting a large clutch bell on won't return that ratio, since most existing buggy/truggy
1/8th platforms can only take a couple teeth larger before the engine mount bottoms.
ignition engine can't operate at the same rpm. But I do have a problem with promoting slow acceleration
after the peak. The power could be reasonable, but never better.
That said, change the carburetor, and you would have a nitro engine with more potential.
One of the model airplane engine manufacture does. I believe it is OS,
use their oil for the premix and the glow plug works.
Bill M.
Last edited by wmazz; 04-19-2014 at 11:37 PM.
04-19-2014, 11:14 PM
#97
If they did, the engines would make much more power, and close the gap on nitro.
That said, gasoline is never, ever going to replace nitro class buggies. But they will make an excellent
entry class machine. It would be good PR if they found a good driver, proper changes to the engine, and
gear train, someone could make a strong case for gasoline engines.
GT80 Zenoahs and 180cc twins to run 25% nitro with mcCoy #9's and my own version of mechanical fuel injection.
engines, the flame front still travels at the same speed. The bore size is so small that it is difficult to preheat the air-fuel
mixture to the point of self ignition. But I am sure it can still be done!
I don't see high octane as being necessary for the same reason. Especially because it kills horsepower.
One of the other benefits of the NGH 9cc engine was the run time, it was twice that of nitro.
Last edited by wmazz; 04-19-2014 at 11:25 PM.
04-20-2014, 12:02 AM
#99
Tech Fanatic
BS - Im a nitro guy that is just building a 1/8 E as we speak. It cost the same as my nitro. Im sorry, but I not buying the cheapest stuff. To get what I feel is quality equipment, Im at more than the price of my nitro buggy. Batteries, Motor, ESC cost more than my Nitro engine, pipe and a case of fuel. And for the record, yes EP is I would say bigger than nitro right now, for ALOT of people it is not simpler. Ive seen people struggle with EP as they struggled with nitro.
Ive been in the hobby for a long time. Ive seen many classes started over the years due to new products, but regardless the standard classes remain to this day and will remain for years to come. Ntiro buggy is going nowhere. It may have gotten smaller, but popularity will increase. Its been the same cycle for years.
Ive been in the hobby for a long time. Ive seen many classes started over the years due to new products, but regardless the standard classes remain to this day and will remain for years to come. Ntiro buggy is going nowhere. It may have gotten smaller, but popularity will increase. Its been the same cycle for years.
Other thing they seem to like to compare 1/10 electric vs 1/8 nitro in cost.
04-21-2014, 05:56 AM
#100
Nitro is a power adder. Higher octane is not. It's actually less explosive than lower octane. So just filling up with 105 instead of 93 wont do anything for you, and like you said, will lose power. The higher the octane, the less prone to ignition it is, which is why we can advance timing, up the CR, increase boost, what ever it takes to up the cylinder pressure without the chance of pre ignition. But without doing that, sure, you are gonna lose power on any engine without knock detection/timing retard, if you just switch to race gas.
So like I said, pull the head shims, run 100, make more power.
More run time, sure... twice as long... maybe... maybe not.
04-21-2014, 07:44 AM
#103
04-21-2014, 08:26 AM
#105
Nitro is only ruling at the pro levels. Club races all over the country are dead. E buggy is taking over. Gas engine won't be the savior. E guys obviously aren't worried about cost with $200 ESCs and $180 motors and $100 batteries....
Nitro off-road is dying, and a gas engine isn't going to make it any better.
Nitro off-road is dying, and a gas engine isn't going to make it any better.