Doc Sprocket
*********
Precisely. For the amount of time, money, and effort required to get that kind of performance out of an industrial engine and CVT, you're better off NOT using that kind of combination.
Dual Sprocket Centrifugal Clutch
- Thread starter canumovespenny
- Start date
- Status
Precisely. For the amount of time, money, and effort required to get that kind of performance out of an industrial engine and CVT, you're better off NOT using that kind of combination.
canumovespenny
New member
This is just the planning stage. I have an engine that I am buying, it's a twin cylinder 4-stroke engine and its over 20hp. I am not sure the exact specs of the thing yet but I should ave it by tuesday and it is only costing my $100. And FYI it does run... not sure how well yet but a little work is always fun. If I do go with the TC on a 12-14 inch tire will I blow belts often?
Also, sorry for my stupidity, but if I have a TC on it, I still need a sprocket and chain for the rear axel right?
Also, sorry for my stupidity, but if I have a TC on it, I still need a sprocket and chain for the rear axel right?
Doc Sprocket
*********
Like anything, it depends on gearing. I have forgotten what the suggested maximum hp for a Comet40 is, but you're probably pushing it. On the plus side, a 14" tire is pretty small in the grand scheme of things. Geared decently, I believe the belt will live a long, happy life.
canumovespenny
New member
I think I'll end up investing in a TC then... Any suggestions keeping in mind budget but also performance?
Will the go kart be belt drive then if I do?
Will the go kart be belt drive then if I do?
FatCat
2 stroke Addict!
What matters is how many RPM you turn the TC. Not so much power. You need enough torque to turn that gearing with your sprocket setup.
FatCat
2 stroke Addict!
You will have to run a jackshaft. You want Comet 40 series. If you can afford it get the real Comet. Also whatever one you buy buy a can of Comet clutch lube. It's expensive($30 can) but it will last forever.
Doc Sprocket
*********
Half right. Power IS a factor, as is load. Too much power and too much load= cooked CVT belt, regardless of RPM.
FatCat
2 stroke Addict!
I should have been more clear. I was talking about hitting the 50mph point.
canumovespenny
New member
Can you explain to me how the actual TC works?
mckutzy
Well-known member
A CVT is a torque converter(just another name for one).
http://en.wikipedia.org/wiki/Continuously_variable_transmission
A 20hp V-twin it going to be some torquing engine, and 50mph is a good speed for 500-800 to 1000lbs machine... what kind of brakes are you thinking of using. You want to go fast but you need to stop fast aswell. Not many brake rotors of such caliber for use in those rims of your size of choice, plus there adaptability.
http://en.wikipedia.org/wiki/Continuously_variable_transmission
A 20hp V-twin it going to be some torquing engine, and 50mph is a good speed for 500-800 to 1000lbs machine... what kind of brakes are you thinking of using. You want to go fast but you need to stop fast aswell. Not many brake rotors of such caliber for use in those rims of your size of choice, plus there adaptability.
FatCat
2 stroke Addict!
canumovespenny
New member
I was just going to use a hydraulic disk brake. Do you have any idea how much the arachnid weighs?
canumovespenny
New member
That video was very helpful, but there is a sprocket there too right?
Doc Sprocket
*********
No idea what it weighs, but nothing beats even a half-decent hydraulic disc setup.
And yes, there is an output sprocket driven by the CVT, chained to a rear axle sprocket.
And yes, there is an output sprocket driven by the CVT, chained to a rear axle sprocket.
canumovespenny
New member
OK, this sounds like an excellent way to go. Should I end up investing in hydraulic brakes or should I just have a disk brake. Is the hydraulic THAT much better?
Also, I am almost finished drawing up my plans and I'll post another thread soon with all the drawings on it.
Also, I am almost finished drawing up my plans and I'll post another thread soon with all the drawings on it.
mckutzy
Well-known member
On a mortorcycles or most motorized vehicles(cars ect.), they have hydraulic disc brakes.
Doc Sprocket
*********
To be clear: You have the choice with a disc brake between hydraulic and mechanical. Hydraulic will always be superior, all things being equal. However- a good mechanical disc brake may end up being better than a lousy juice system. Assuming we are comparing a good hydro system to a good mechanical system, the hydro wins every time.
Aside from sheer clamping force, the second major benefit to a hydro system is actuation. It's easier sometimes to route tubing in ideal locations than it is to set up rods or cables.
Third, hydraulic systems self-adjust.
On the other hand, mechanical systems are simpler, with less potential for problems. You decide.
canumovespenny
New member
Ya, I should have specified. There is always the price point to think about too.
canumovespenny
New member
Does it matter what my axle sprocket is if I get a TC then?
Doc Sprocket
*********
It certainly does. All the CVT does for you is provide a ratio variance from idle to your final ratio. The sprockets STILL determine your final ratio.
- Status