520 centrigual clutch

[irelandbiker]

I have googled and searched ebay for a centrigual clutch for my go kart which uses a 520 chain and sprocket
do you know anyone who sells them?
would a #41 clutch do instead?

 

[Kenny_McCormic]

Why did you use 520? What kind of motor are we dealing with?

 

[irelandbiker]

it is the sprocket thats on the go kart the engine is a 6.5 hp clone

 

[Kenny_McCormic]

A 40 series chain will be fine.

 

[modelengineer]

If you get a 40 series clutch you will need a 40 series chain and a 40 series main sprocket.

 

[BradenM]

Or a metal file and a good eye/digital calipers.

 

[Kenny_McCormic]

Or a metal file and a good eye/digital calipers.

You cant file a 50 series sprocket for 40 series chain, pitch is different, 40=4/8" 50=5/8".

 

[irelandbiker]

the sprocket would be hard to take off my theory is that the #41 clutch will be fine with the 520 chain they aren't that different only the pict is 1/8 of an inch bigger

 

[Russ2251]

Chain will run out in short order.
Kinda' like threading a 5/16 x 18 bolt into a 5/16 x 24 nut.
Changing sprocket is doable. Interchanging #520 and #40 chain is not.

 

[Kenny_McCormic]

You cant run 520 chain on a 41 sprocket, the increases distance between rollers wont allow it.

 

[irelandbiker]

I finally got my hands on a 520 centrifugal clutch of a 5.5 hp clone engine today but when I try to put it on my new engine a gx200 clone it wont fit the 3/4" 20mm shaft I found out the dam clutch fits a shaft thats between 18 or 19 mm the thing wont go on my standard 20 mm shaft talk about bad luck

 

[Kenny_McCormic]

Run a more standard #35 or #41 system and we wouldn't have this problem.

 

[Russ2251]

Lesson learned. Pays to research stuff first.
Does your engine have gear reduction for pto?

 

[irelandbiker]

I doubt it heres its details

Engine-Name UP168
Engine-Type Engine-type 4-stroke, 1 cylinder, air cooled, OHV, petrol engine
Displacement (cc) 196
Spark F6TC
Max.Power 4,80 kW / 6,50 hp at 3600 U/min
Start: Recoil
Oil-Type SAE 10W/30 winter / summer
Fuel consumption (g / PS / h) 290 g
Fuel Super-Unleaded Petrol
Tank (Super Unleaded Petrol in l) 3,60
Oil content (in l) 0,60
Cooling Air-cooled engine
Gross Weight 18 kg
Dimensions in cm 41,7 x 36,8 x 38,5
Engine Bore (in mm) 68 x 54
Ignition system transistorised
Engine-Stop-System vs Ground
Air-Filtration System Dual Silent (Semi-Dry)
Compression 8,6 : 1
Volume (dBA / 7m in distance) 78

the shaft is 20mm and the clutch i got is for a 19.05mm shaft

 

[Russ2251]

Looks like this?

 

[jr dragster T]

Here's a video of somone turning down a 20 mm shaft to .775" or 3/4. It's called a GX200T.

http://www.youtube.com/watch?v=DzxUhdKJ-gg

 

[irelandbiker]

hey ye thats the exact engine above
i wonder could i do that with out a lade

 

[Kenny_McCormic]

Yes you could do without a lathe, nice sanding block and the finest paper you can get should do just bolt to something sturdy, take a lil and measure.

 

[irelandbiker]

ok thanks to ye all for the help I'll let you know if that works

 

[BradenM]

Best of luck buddy