CVT PB/Goped CVT Opinions

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Hmm, Ive screwed up lol. I origianlly thought that the "fake" CVT LIKE gearboxes were the ones with the 3 pulleys and chains in them...however after more research to one I posted a link to was in fact just a gear box lol!

Anyway, should I get one I will definatley tune it correctly (once the engine mods are complete so my power band stays put lol!). Tuning will be easy as I can machine my own variator weights.

Lastly, does anyone know what the ACTUAL gear ratios are. The website say approx 7:1 and people here have mentioned something around 6.5:1...okay.

But does anyone know the gear ratio when the variator is fully closed (ie say teh engien is a redline and the CVT is in "overdrive"). Whats the ratio then? 1:2 (0.5:1)?

Oh and heres a good supplier if you want to pay with paypal, also they ship international!!!

http://www.pocketbikeparts.com/CVT_p/x2tx300627.htm

For me (in Aus) and with our exchange rate, a CVT will cost me $120. Coupled with a FULLY modified PB engine my build so far will cost $500 and thats without the bike!
 
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Hmm, Ive screwed up lol. I origianlly thought that the "fake" CVT LIKE gearboxes were the ones with the 3 pulleys and chains in them...however after more research to one I posted a link to was in fact just a gear box lol!

Anyway, should I get one I will definatley tune it correctly (once the engine mods are complete so my power band stays put lol!). Tuning will be easy as I can machine my own variator weights.

Lastly, does anyone know what the ACTUAL gear ratios are. The website say approx 7:1 and people here have mentioned sothing around 6.5:1///okay.

But does anyone know the gear ratio when the variator is fully closed (ie say teh engien is a redline and the CVT is in "overdrive"). Whats the ratio then? 1:2 (0.5:1)?

I didn't want to out and out say you were wrong about that X1 box.
There is a CVT out there that has a metal cover,
and it is a weird CVT, one of my friends at GPN found it.
It had bigger gear reduction, and the third bearing like I said.
I haven't seen one since.

I sadly cannot tell you the exact ratio.
 
Hmm, Ive screwed up lol. I origianlly thought that the "fake" CVT LIKE gearboxes were the ones with the 3 pulleys and chains in them...however after more research to one I posted a link to was in fact just a gear box lol!

Anyway, should I get one I will definatley tune it correctly (once the engine mods are complete so my power band stays put lol!). Tuning will be easy as I can machine my own variator weights.

Lastly, does anyone know what the ACTUAL gear ratios are. The website say approx 7:1 and people here have mentioned something around 6.5:1...okay.

But does anyone know the gear ratio when the variator is fully closed (ie say teh engien is a redline and the CVT is in "overdrive"). Whats the ratio then? 1:2 (0.5:1)?

Oh and heres a good supplier if you want to pay with paypal, also they ship international!!!

http://www.pocketbikeparts.com/CVT_p/x2tx300627.htm

For me (in Aus) and with our exchange rate, a CVT will cost me $120. Coupled with a FULLY modified PB engine my build so far will cost $500 and thats without the bike!




By actual count on a fancyscooter cvt.
The transmission part is 3 to 1
The cvt part is hard to do. But here I go 3 to 1 .

Errors possible it is hard for me to check this safely.

So with belt errors about 6.5 low to 3 to 1 at high.
With 5 to 1 transmission like a thats dax titan kit with a built in jackshaft.
You get better low end with much better top end.
You may need a larger rear sprocket.
 
On my CVT, in low range I counted the revolutions and got right at 7:1. I know for a fact they will not go 1:1 or .9 like the Torque-A-Verter advertises. Just watching the belt at high revs looks like it MAY get around 2 or 3 or there abouts. Like Spad says, there are most likely variations from unit to unit. I would think that maybe with some shimming you might squeeze the belt a little higher. Not ready to disect this thing yet tho but playing with the rollers might be the easiest way to get the response where you like it.
WC
 
...when watching the belt you get 2 or 3...

Is that the final drive ratio? Or does it look like the CVT section (2 pulleys/belt) are giving a 2:1 ratio (approx) in "top gear"?

I think (but then again Ive never seen/used one of these), that the actual CVT section can get to around 0.9:1 in overdrive BUT once this ratio comes out through the gearbox section of the CVT it turns out to be around 3:1 (Is this correct?)

Im gonna crunch some numbers now to figure out what my final drive ratio should be (assuming ~7:1 at the start).
 
...when watching the belt you get 2 or 3...

Is that the final drive ratio? Or does it look like the CVT section (2 pulleys/belt) are giving a 2:1 ratio (approx) in "top gear"?

I think (but then again Ive never seen/used one of these), that the actual CVT section can get to around 0.9:1 in overdrive BUT once this ratio comes out through the gearbox section of the CVT it turns out to be around 3:1 (Is this correct?)

Im gonna crunch some numbers now to figure out what my final drive ratio should be (assuming ~7:1 at the start).

I'm talking about visually observing the belt. It does NOT quite go even (parallel) between the pullys. As mentioned above the Torque-A-Verter brand CLAIMS .9:1. Don't know. Don't have one of those.
 
Not even parallel...Hmm...Im still not detered lol. Ill grab one for the next build!
 
Not even parallel...Hmm...Im still not detered lol. Ill grab one for the next build!

Look guys,
I'm someone who has put at least 500+ miles on mine.
They are great little cheap things.

Parts like the variator shaft could be remachined easily with a small lathe,
and most parts in it can be trued up by bending one way or another.
The housing is very cool, and with some mods I can honestly say that this is the most valuable addition to any motor under 4hp.

Over 4-5hp it starts to be redundant, as it starts to tear the CVT up
and it's really not needed.
For a 1-3hp engine it's stupid awesome.

And, if you buy one, have an impact wrench for vari and driven pully nut removals.
 
So with belt errors about 6.5 low to 3 to 1 at high.
With 5 to 1 transmission like a thats dax titan kit with a built in jackshaft.
You get better low end with much better top end.
You may need a larger rear sprocket.

Or replace the output 10 tooth jackshaft sprocket to a 12 or 14 tooth!
 
Not even parallel...Hmm...Im still not detered lol. Ill grab one for the next build!

Go ahead and get it; you won't be sorry. Ya can kick the numbers around all you want. But, if ya need me, I'll be out riding mine.
SeeYAAAAAAHooooo!
 
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