Variator weights/RPMs By skyrider (Read 1,287 times)

[skyrider]

What is the weight of standard 250 variator ? The yy250T that Doug got from me ran 4000 @50 mph. This Honda Reflex that I just bought runs 5000 @ 40. Big difference. I much prefer the lower RPMs since I do lots of long distance cruising. I have no reference point to start from in changing rollers.
Ideas or experiences?

[alleyoop]

NO telling what gram weights were put in each one. But if you want lower RPMS you need to get Heavier weights.
Rollers for every gram you go up or down will change your rpms by 500-600 rpms. So weigh the weights in the HONDA Reflex and put in 2 gram heavier weights than what it has in there. That will drop the rpms by 1000.

MIKE6736 on ScooterDoc has a Honda Reflex and he has changed his weights several times to see set it up the way he likes it. He used to be on here but I haven't seen him lately.
Alleyoop

[skyrider]

Alley, if the lubricant on the rollers were dried up would that make it work different? I took it on a 150 + mile ride today through the beautiful rugged mountains of southern CA and it seemed to work more as I had expected it to. It climbed to 8400 foot elevation with ease and seems to run at somewhat lower RPMs. It is noticeably faster than the Jonway though I did not try for top speed.

[alleyoop]

Yes it would make it work different dried up stuff on the rollers would make them heavier and run at lower rpms.
Alleyoop

[thomaspm]

Question about the weights,
So a lower weight gives you more top speed or a heavier one does?

[JR]

Dec 9, 2013 10:45:24 GMT -6 thomaspm said:

Question about the weights,
So a lower weight gives you more top speed or a heavier one does?

Not generally it all depends? For instance lets just use a weight number, say 14 gram rollers. Lets go to a lighter slider at 13 gram. Now the 13g will give you more pulling torque up hills but since sliders push the plates together a touch more by their design you may gain a tad of top end as well?

Generally going up in weight will ad a touch of top end but one must be careful to not get out of the good HP to RPM range. Go to too heavy of a weight and you'll lug the engine.

Other side of the coin is lighter weights raise RPM, great for pulling the hills and low end torque but one loses top end and runs the engine at higher RPM's and reduces engine life and MPG.

JR

[thomaspm]

JR,
I live down here in Central Florida the Orlando Area so the only real hill we have is going up and down speed bumps lol

So I'm looking for a little quicker acceleration and top speed right now I'm doing 55 mph at around 4500 rpm

I just hit 8k miles on my Jonway yy250t I have to change out the belt so I was thinking about the other options while I'm down in that area of my scooter.

I'm also getting about 75 miles per gallon right now.

[alleyoop]

To get stronger acceleration you need more RPMS so you would need to go lighter on the weights. Now going to light may lower the top end speed. Also higher rpms use more gas.
Alleyoop