Cool 2008 article from Mythbusters about converting a race kart to gas.
- Thread starter Bmr4Karts
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JTSpeedDemon
2019 Build Off Winner!
I find it kind of interesting how the electric karts at K1 Speed can really WAIL! They are LOUD! They are fast, though. Sometimes I wonder what their battery chemistry is, given that they get run hard, then plugged in for ~10 minutes and then run again, then repeat. Kind of amazing, but then again, I don't know how often their battery packs get swapped.
I would still take a gas kart any day.
I LIVE for the roar of the exhaust!
I would still take a gas kart any day.
I LIVE for the roar of the exhaust!
Budget GoKart
Aka a kenbar
4 strokes are waaaaaaaaay more efficient then two stroke engines by far considering the don't just run full bore on mixed fuel/oil they run on just gas and perform fairly well on very little fuel
if you talk about fuel efficiency per combustion volume..
yes 4 strokes are more efficient (generally) than two strokes.. (exceptions are a possibility though)
since same combustion volume two strokes roughly need twice the rpm than their four stroke counterpart.
BUT if you take power to weight power to combustion volume into account however you might get out of reach very quickly...
an old 100cc two stroke (kart enigne) happily stables 13-16 available horses stock
(new 250cc kart engines crack the hundred horse mark easily)
comparing that with a 200cc kart engine providing roughly
half the power at half the rpms (much simplified)
running both for the same amount of time both would use about the same amount of fuel
BUT the 2stroke would still apply twice the power!
So yeah... meh...
'sid
PS but true.. a four stroke can be throttled down to minimal fuel consumption
far below what a two stroke might be able to..
so you all love 1l turbo charged four stroke engines, right?
an nobody would want a V8 6l providing only three times the power of aforementioned 1l ..correct
yes 4 strokes are more efficient (generally) than two strokes.. (exceptions are a possibility though)
since same combustion volume two strokes roughly need twice the rpm than their four stroke counterpart.
BUT if you take power to weight power to combustion volume into account however you might get out of reach very quickly...
an old 100cc two stroke (kart enigne) happily stables 13-16 available horses stock
(new 250cc kart engines crack the hundred horse mark easily)
comparing that with a 200cc kart engine providing roughly
half the power at half the rpms (much simplified)
running both for the same amount of time both would use about the same amount of fuel
BUT the 2stroke would still apply twice the power!
So yeah... meh...
'sid
PS but true.. a four stroke can be throttled down to minimal fuel consumption
far below what a two stroke might be able to..
so you all love 1l turbo charged four stroke engines, right?
an nobody would want a V8 6l providing only three times the power of aforementioned 1l ..correct
Quinc
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Have any experience with 2strokes outside of your weed eater? Weight to power ratio is hard to beat. And when/if it does blow up it is much cheaper and easier to rebuild. Only thing is with something like a cr250 or banshee 350 you are either going full bore balls to the wall or lugging around. Where a 4stroke is much more user friendly for putting around on. Either way they are all a blast to ride.
Some 2stroke porn for you here:
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