I need an inexpensive gokart engine

[jr dragster T]

So Russ what about when the magnet goes by the coil ones on exaust but then the next one is actually igniting fuel? So what about the spark wasted not lighting fuel? does the plug still go off or does it build energy on the exaust stroke spark and zap it on the fuel stroke?

 

[Kenny_McCormic]

Spark goes off every time the psiton comes close to TDC no matter your coil, tiny amount of power wasted cant be measured at the crank, KISS.

 

[Russ2251]

Mr. McCormic is correct.
Spark plug does fire twice in 4 cycles. As combustion cycle has all ready taken place, there is very little (if anything) to ignite on 2nd revolution.
However, if you have a faulty plug that misfires (blows out) on combustion cycle it CAN fire on next revolution which would be around the time intake valve opens causing a true backfire.
True backfire exits intake, not exhaust.

 

[jr dragster T]

Yeah thats what I was making sure of that it actually sparks after fuel ignition has lit

 

[megaman1339]

what do you think would be good for a beginner kart, off road, doesnt need to be fast

 

[oscaryu1]

what do you think would be good for a beginner kart, off road, doesnt need to be fast

Live axle, roll cage, 6.5HP+, low gearing.

 

[Jerryburger]

Hey, megaman1339! Here in AZ, besides a Hell-Like weather model, we have a place called "Deseret Industries" which is like Goodwill, but they tend to get more of the greasy fun stuff. If there's something like that near you, go scouting for old reel-mowers and tillers. They have LOTS of useful bits besides the engines to salvage. My 1st adult project was based on the B/S 2hp ($12), 5:1 gearing and the HF $5 10" wheels, and it worked okay.... if you can find a B/S 80000 series (3hp) or (YOU LUCKY GUY!) a B/S 90000 series horizontal shaft motor (3.5hp) then you'll be fine for single seat work. Watch my thread in the Gallery section in the next couple of days... I'm going to GPS my stock B/S 2hp motor, which I'm pretty sure is hitting 28mph on level ground with me (210lbs) in it, and try to post the video.

 

[I like karts]

Not for me!!! LOL

haha

 

[jujujus2]

go to duropower.com and buy the 5.5 hp honda clone for 99.99.. it will be your best 100 dollars you ever spent.

 

[bigfootrules31]

are Robin or whatever there called engines any good. one of my dads friends said if i fix it up and sell it i can have half of what i get but would i be better off to buy it from him, its a 7hp i think

 

[BradenM]

Fix it up and KEEP IT. IMO Robin engines are excellent. My experience with them would be using them over a period of 24 hours in an endurance race. If you can get a clutch for it, get teh Robin.