| T O P I C R E V I E W |
| n/a |
Posted - May 12 2003 : 08:11:11 AM
Hey. I`m planing building a go kart. I think it will be easy for me to get a frame and stuff like that. But I`m wondering, how to get the engine power over to the wheels? Is it hard? Does it cost alot? I`m not building an expencive go kart. Just want a go kart that works, if you know what I mean? Please help me. (Please don`t explain with hard words, try to explain it a little easy, Ì don`t have so much experience!) Is there a special gear ratio I should have? I think the engine I have is, is about 3.5hp. Is it enough? The go kart should have a top speed of about 40kph. (Maybe more;)) So I`m wondering about what the gear ratio should be....oh and one thing more, do i need a clutch-alike thing on the go kart? To set the go kart in N? Is it a easy way to fix that? Damn you are good with this;) (Could you make a tutorial some time about building a simple go kart? Or is it too much work? |
| 13 L A T E S T R E P L I E S (Newest First) |
| BEatonNo1 |
Posted - May 26 2003 : 5:32:21 PM
If you do decide you need to weld it be shure that the gears are even with each other and that they are perpendicular to the shaft any woble or bend in the chain while running can cause it to snap
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| Aaron Cake |
Posted - May 26 2003 : 09:10:30 AM
Actually, the centrifugal clutches most people use already have a matching sproket that should fit the chain. The "gears" then go on the rear wheel/axel. If the sproket doesn't fit, just swap it with one that does. It's all very standard. 
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| n/a |
Posted - May 26 2003 : 04:21:20 AM
how do i connect the bike gear to the output of the engine, would i have to weld it or something?
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| BEatonNo1 |
Posted - May 22 2003 : 4:29:10 PM
thanks for the lession I will have to remember that one
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| n/a |
Posted - May 22 2003 : 09:13:55 AM
Hey, thanks for the help guys, now I have something to go after. (Was that a bad sentence?) I`m norwegian...yeah, well, thanks for everything! =)
Snakkes senere!
Snakkes = See you.
senere = Later.
Now thats todays norwegian lesson=P
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| BEatonNo1 |
Posted - May 16 2003 : 4:30:44 PM
yeah thats true about the Turbo cart, it wouldnt take much to build the frame once the turbo is done.
Yeah with a motorcycle engine i would probably make more of a dune buggy. It would be fun if I ever come into some money or time. As soon as I get a chance this summer, I am probably going to start on a raft for the raft race
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| Aaron Cake |
Posted - May 16 2003 : 09:15:33 AM
The turbine kart would be very cool (and LOUD!). A simple chasis made of tubing and bicycle wheels would not take long to build (no need for axels, gears, etc) if bike brakes are used...Maybe 2 days? The turbojet engines would take longer, but are not very complicated if you think about it...The only problem is TIME. I have none.
As for a motorcycle engine, that's a great idea. If you're a sucker for punishment, Harley V-twin engines are easy to find. Otherwise, hit the wreckers for a bike. Might be hard to find though...perhaps just post an ad on a motorcycle forum?
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| BEatonNo1 |
Posted - May 15 2003 : 4:55:24 PM
really you could just find a Kiddey bike that has like 3 gears. that wouldbe all you need.
Well a turbine powered cartwould be really cool but thats more like to projects, because the turbine would be a project within itself.
I always figured that if I were to build a cart I would use a motorcycle engine. find an old motorcycle. that would give you brakes an engine and maybe some insturments. Most cycle engines (actually I have not seen one without) allready have a transmission.
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| Aaron Cake |
Posted - May 15 2003 : 09:36:15 AM
I've thought about using the bike gearing before, but have not yet done it. I'm torn between making my next kart turbine powered vs. Wankel powered. For the turbine version I would not need the gears, and the Wankel would rip the bike gearing to shreads. So I'm not sure I will be able to try this anytime soon...
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| BEatonNo1 |
Posted - May 14 2003 : 2:36:51 PM
OOps my bad I didn't see the KPH. Just kind of assumed. Yeah like Aaron said your clutch takes care of the idle problem, but depending on where you got your motor from you might already have one. As for the gears just make shure that the smaller one is on the motor and that they dont have that extreme of a difference (ie 2:32)
PS Aaron do you think that using the entire gear system from a 25 speed bike would work or would there be too many RPMs for the chain to catch when changing gears. It would certainly make for an interesting transmission.
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| Aaron Cake |
Posted - May 14 2003 : 12:36:59 PM
quote:
But I`m wondering, how to get the engine power over to the wheels? Is it hard?
There are many ways, but for a standard 4 wheeled cart it is pretty simple. The rear wheels are simply mounted on a shaft that spins in a set of bearings attached to the frame. There is a pully or cog in the center of the shaft, which connects to the engine via a belt of chain.
To allow the engine to idle without moving the kart, a clutch is used. Normally, this is a centrafugal clutch like the kind you would find on a chainsaw or trimmer. This is an automatic clutch, so as the speed of the engine increases past idle, it will automatically engage. I prefer a manual type clutch which I have control over.
quote:
Does it cost alot? I`m not building an expencive go kart. Just want a go kart that works, if you know what I mean?
The engine and clutch will be the most expensive part. Best is to look for an old snowblower or reel type lawnmower, which will have all the parts you need and won't cost very much.
quote:
Is there a special gear ratio I should have? I think the engine I have is, is about 3.5hp. Is it enough?
I have never paid much attention to gear ratios when building. All my karts and bikes usually end up with tall ratios. They accellerate slowly, but have a high top speed.
3.5 HP is probably enough for cruising around, but 5HP will certainly result in a peppier kart.
quote:
The go kart should have a top speed of about 40kph. (Maybe more;)) So I`m wondering about what the gear ratio should be....oh and one thing more, do i need a clutch-alike thing on the go kart? To set the go kart in N? Is it a easy way to fix that?
40KM/H should be easy with almost any gear ratio. Normally, you actually want a reduction from the engine to the wheels. You need the torque, not speed. 1:2 should do you fine, but 1:3 will result in better accelleration and less clutch slippage. See above about the clutch.
quote:
(Could you make a tutorial some time about building a simple go kart? Or is it too much work?
Well, the problem is that even a simple kart would require 200-300 pages worth of instructions and illustrations if it is to be a true "turtorial". Lots of time to make, and will probably result in an expensive kart since the builder would loose his/her freedom to improvise.
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| n/a |
Posted - May 13 2003 : 11:10:28 AM
But if i have connected the engine to the wheels, and I`m gonna start the engine, the wheels will start to rotate, and the kart will drive. Could I just stop it with some brakes? I haven`t build a go kart before, but it couldn`t be so hard...About the speed thing, Aaron has a 3.5hp, and he`s kart goes in about 65kmh!...I think! But the speed isn`t so important. But what kind of gear ratio should I have? But if I use a bycicle gear, could I have the biggest gear wheel (the one beside the pedals) at the wheel, and the little gear (beside the wheel) on the engine? Would that be a good gear ratio? Or will the engine rotate too fast? Please help me, thanks for the help so far =)
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| BEatonNo1 |
Posted - May 12 2003 : 6:25:53 PM
well I dont know about your top speed with that size but to connect your motor to the axle you would probably just bycicle gears and a chain. You really wont have any gears to shift through or a neutral.
Personally I dont think that you wont be able to reach those speeds with your motor, for what you want I would suggest finding a small motorcycle motor
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