Different variators between different Downtown 300i model years

[Adept]

Dear Adept

I have an answer for you



So according to the malossi.com webshop both modell (SK60, SK60A) has the same belt. http://www.malossistore.co.uk/Prodotto.aspx?type=M&MM=MO/KYDO30012&C=6115277

[sklnzl]

Hi there ,I think i have got the new ,improved variator , as i have a relatively fast 0 to 100 km/h ,and at WOT the rpm goes easily to 8000 and sometimes 8200 at first and then stabilizes to about 7000rpm and 6000rpm

[Adept]

Next Step of my experiment

I have changed my belt to a Malossi. I noticed a little dragging after startup.

After many tries, I put back all the 15gr rollers (gave up the mixing). With the new belt, the 15gr roller is the perfect...
The conclusion: all the parts are important (belt, clutch, variator, rollers). They affect each other more than I tought.

One more thing. Mixing roller weights is cause faster wearing. I think, bacause half of the rollers (4pieces) wearing the pressure of the torque.

[zombie]

RPM/Power out put, and HP are all completely different. The HP is built into the combination of components used in the intake/combustion/exhaust sections of the engine. Torque is also created by the same components but is controlled by the CVT.

You will hear all sorts of terms but Available torque is the bottom line. It is the available torque number that determines the maximum load bearing of the engine. You can make 650HP at 8K rpm or at 3.5K rpm. It makes no difference.

What is important to scooter owners is exactly where in the rpm range the most HP is produced. That is the entire reason for modifying variators, and clutches. You want the variator/control pulley to hold open until the maximum hp range or at least fall back to higher gearing until max hp is reached. That way your cruise is comfortable, and the bike has more gearing left for power passing.

It is different in race scooters where we leave the clutch unable to engage until MAX hp is reached. Then the bike takes off like a rocket because max hp, and max torque are delivered to the rear wheel at the same time.
You can stiffen up your fly springs on a 300cc scoot but most guys that own them are more into cruising so the CVT is set up softer allowing lower rpm closing of the pulleys. You never see GoldWings at the drag strip but they can be made to fly. Same for the 250/300/500 Kymcos. Stiffer clutch springs can be made/found to allow more torque to the wheel. All the variator does is determine the rpm/gear ratio at any given point. It has NOTHING to do w/ HP. If you want a stronger feeling 300 add a 1/4" shim under the Control spring. That pre loads the rear pulley to hold a taller gear longer.

[donjack]

just fitted dr pulley 14gr, when I looked at both parts of the variator the ramp part was LGE5 whilst the fixed part was LEA7!!
does anyone have any idea why this is?
the dt is a 2012 and I'm its second owner.
cheers,
Don.

[Adept]

just fitted dr pulley 14gr, when I looked at both parts of the variator the ramp part was LGE5 whilst the fixed part was LEA7!!
does anyone have any idea why this is?
the dt is a 2012 and I'm its second owner.
cheers,
Don.

Oops, that is interesting...

[de dee]

  what is the red line on our scooter 300i  DT.  there is no marking on my rpm. dial

[nushipwright]

I recently discovered LEA7 written on the exhaust muffler under the plastic cover.

[kfc.android]

Just put the dr. pulley 15.5g sliders on my dt300, so im going to share my two cents. English was never easy for me so please bare with me.

In terms of transmission setting I have, everything is stock, no other modification except for this slider, ODO shows 9310 miles.

On my 2013 Jan. model, I got LGE5 version of Variator and Ramp Plate while the drive pulley face plate is LEA7 version.

--- First impression ---
So far, I think 15.5g slider's reaction is similar to stock 15.5g roller in low speeds, however, in higher speed (70mph+) area, it performs as I expected (and better than stock rollers).

--- Comparison, stock ---
With the stock roller, 0-70 mph is easy, but 70-80 needs a little bit more push, not to mention 80+ will need more push to reach.
If I carry another passenger, 80mph is about my top speed.

--- Comparison, Dr. Pulley ---
With 15.5g slider, 0-70 is easy as well, but I have noticed slightly higher rpm compared to the stock roller.

70-80 is easy, and as I wanted, 80+ is a lot easier to reach because the engine revs up easily and smoothly.

Something impressed me is that even with other passenger, the bike gives you a feel like she can handle it without struggling.

--- Personal thoughts ---
I ride on CA autobahn for 60 miles per day, 7 days per week, with many two up riding chances.

It is critical for me be able to obtain enough speed with some reserved speed so I won't get hit from behind by other crazy drivers.

So far I'm happy with the slider. You won't get violent take off power as those lighter sliders may give you, but for freeway cruising, it's perfect.

It is good to cruise at 80 mph because the vibration is a lot less than before, plus, I can easily go up to 95 mph in case I need that power/speed, even with another passenger!
Money well spent!