Help me pick an engine! :D

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freakboy

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dont bother with the clone... by the time you up grade it you could have a bike engine WITH a gear box makeshit loads more power then you ever will dream of with a clone....
 

modelengineer

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Yeah, a clone engine doesn't really make sense unless you don't want to go fast, or have good acceleration, or a good sound, or lots of revs, or gears, or...
 

Kaptain Krunch

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No no, they're right about the clone. WHO in their right mind would want crazy power, awesome sound, electric start, manual shift, great acceleration, high redline, all for only a hundred or two more than a 6.5hp clone?
 

sideways

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Hey guys, I didn't say a clone did I?

You don't need to go and buy an engine, I've got dozens of good engine for free. I've never actually paid for one.

Just saying don't get carried away with this thing.

Hayden
 

freakboy

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no bajatard did... i just felt like being a dick about it. and nothing against you cause i read your post and you didnt say anything bout a clone..
and if i remember right the op is 24 im sure he wants something more then 5 or 6hp and im sure he knows at least one person to help him put it together who knows more bout this stuff then him...
 

robbie

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You can build a simple kart a lot more easily and inexpensively than a 250cc shifter kart. You can have a lot of fun with 5 hp, or you can get an 8 hp rototiller engine or some such at an auction, or you can pick them up for free sometimes. You could put a kart together in a week or two, and the education from building and driving it would make your second go kart twice as good as it would have been otherwise.

There's no rule saying that you have to have a "baby" go kart before you graduate to a super cool one. But it's a fact that you have to do a lot better job of building the high powered one because of the torque, weight, etc. The value in building two karts is in the education and experience.

For example, I built my first mini bike this spring. I thought it was a pretty smart design. But I learned a few things in the process. I learned that my property where we will do all of our riding has special requirements for suspension and the types of tires we should use. Also, I learned just how much power is required to get good performance going up the hill on my driveway. I could make an educated guess, but it's nice to know for sure.

Anyway, after my 2.5hp Harbor Freight powered dinky kart and my first mini bike, I feel like I'm more competent now to build a Honda 200 shifter kart and a bike with spring suspension. I've already sold the bike to a college kid who plans to ride it to class, and I'll find some kid who will enjoy the kart now that my kids are ready for something bigger.
 

I like karts

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If you want a top speed of 40mph, a 125 bike engine will be fine. 125cc bikes tend to top out at around 70mph or more. The acceleration probably wouldn't be great though. 250cc bikes can top out at 110ish.


Hell no. That little 125cc, geared for max power and speed balance, could maybe touch 50 mph. And I wouldn't get hopeful for over 70 with the 250.
 

Kaptain Krunch

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Hell no. That little 125cc, geared for max power and speed balance, could maybe touch 50 mph. And I wouldn't get hopeful for over 70 with the 250.

a 125 two stroke shifter will EASILY hit 70, those liquid cooled engines push 30hp stock, there nothing to laugh at.
 
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