. By rosiemoto (Read 11,481 times)

[cyborg]

Oh by the way that's a piston right there

[rosiemoto]

Thanks cyborg! Is your scooter an actual manual transmission?? Like clutch and all? Or does it just change belt position as you change gears?

[cyborg]

No belt,,direct manual 4 speed gearbox with clutch,,,I love that silly little thing

[rosiemoto]

I got the new belt in. I'm finally back up to 61mph top speed!

Here's my K&S and Koso variator results on a brand new belt! Previously I *barely* got 57-58 with these same parts.
* Note: The "Throttle response" ratings below, refers to how much throttle is needed to cruise a certain speed. If there's bad throttle response, it feels like the bike is revving but not really going anywhere, or like the belt is slipping.

K&S + 13g rollers + 107mm variator fan
Top speed: 61mph @ 7000rpm
Acceleration WOT: ~6400rpm
Cruise 40mph @ 6000rpm
Cruise 50mph @ 6400rpm
----Throttle response----
0-30mph..... ***** (does pretty good up to 25mph)
30-40mph... ***** (throttle starts getting much less responsive after 30mph)
40-50mph... ***** (50-75% throttle to cruise these speeds..feels like belt is slipping!)
50+mph..... *****
---------------------------
^ K&S Notes: I think the 13g rollers may be too light for it, but strangely it still gets the top speed when wide open. I really wonder how properly weighted sliders would affect this variator?? It might clear the throttle response problem up.

Koso + 12g Dr Pulley sliders + 107mm variator fan
Top speed: 61mph @ 7000rpm
Acceleration WOT: 6200rpm
Cruise 40mph @ 5000-5500rpm
Cruise 50mph @ 6000rpm
----Throttle response----
0-30mph..... ***** (hard to go under 30! ..10% throttle for side streets, for real!)
30-40mph... ***** (absolutely effortless, feels like I'm in "overdrive" gear)
40-50mph... ***** (it cruises these speeds at 20-40% throttle; still feels effortless)
50+mph:.... *****
---------------------------
^ Koso notes: I was on the K&S setup as shown above, for about a week, then when I went to this Koso+slider combination, WOW the difference is night and day.

Now to drill some more holes in my CVT cover for venting. It's less hot than before, but still hot enough to worry me this new belt might wear out quick too. The clutch bell itself was WOW hot, almost burnt my finger in a split second.

[seanstr]

Jun 25, 2016 22:26:25 GMT -6 rosiemoto said:

I got the new belt in. I'm finally back up to 61mph top speed!

Here's my K&S and Koso variator results on a brand new belt! Previously I *barely* got 57-58 with these same parts.
* Note: The "Throttle response" ratings below, refers to how much throttle is needed to cruise a certain speed. If there's bad throttle response, it feels like the bike is revving but not really going anywhere, or like the belt is slipping.

K&S + 13g rollers + 107mm variator fan
Top speed: 61mph @ 7000rpm
Acceleration WOT: ~6400rpm
Cruise 40mph @ 6000rpm
Cruise 50mph @ 6400rpm
----Throttle response----
0-30mph..... ***** (does pretty good up to 25mph)
30-40mph... ***** (throttle starts getting much less responsive after 30mph)
40-50mph... ***** (50-75% throttle to cruise these speeds..feels like belt is slipping!)
50+mph..... *****
---------------------------
^ K&S Notes: I think the 13g rollers may be too light for it, but strangely it still gets the top speed when wide open. I really wonder how properly weighted sliders would affect this variator?? It might clear the throttle response problem up.

Koso + 12g Dr Pulley sliders + 107mm variator fan
Top speed: 61mph @ 7000rpm
Acceleration WOT: 6200rpm
Cruise 40mph @ 5000-5500rpm
Cruise 50mph @ 6000rpm
----Throttle response----
0-30mph..... ***** (hard to go under 30! ..10% throttle for side streets, for real!)
30-40mph... ***** (absolutely effortless, feels like I'm in "overdrive" gear)
40-50mph... ***** (it cruises these speeds at 20-40% throttle; still feels effortless)
50+mph:.... *****
---------------------------
^ Koso notes: I was on the K&S setup as shown above, for about a week, then when I went to this Koso+slider combination, WOW the difference is night and day.

Now to drill some more holes in my CVT cover for venting. It's less hot than before, but still hot enough to worry me this new belt might wear out quick too. The clutch bell itself was WOW hot, almost burnt my finger in a split second.

Did you figure this all out?

I'm in the middle of this. I need to get my mph up. I am stuck at 45. Stock variator used to get me to 55 mph true, and was getting 90 mpg.

I took it to the local shop after it started to bog down in colder weather.

They did stuff to it and never explained what was done and never fixed the bogging.

I fixed it with this forums help. New carb helped.

I can only get to 45 mph. I cannot get the top speed of 55-60mph any more. Bare in mind it's much colder now here so I may not get that until a nice warm day. It's in the 30's.

They changed the belt length and width and depth I believe. They also went to 11 gram sliders from Dr pulley.

I tried to correct.

I mixed some 14 gram rollers and the 11 gram sliders to get to 12 grams and was OK, but it had to sit waiting for parts. I won't go on to do the details but the shop was very bad.

Anyway, I now prefer the 13 gram sliders. I got the correct belt do all I need is to get full range on the variator. Mine will now only go to just shy of 1/4 inch or so to the outer edge.

It seems a Kooso, 4 and 1/2 inch variator is needed then play with the sliders and rollers as you had to do.