I just wanted to say thanks to Jeff R and others for their insight into the J Costa variator.
I purchased one from scootertrap. com and installed it over the weekend.
I had used Dr. Pulley sliders last season and was impressed with them over stock. But comparing them to the J Costa is like night and day.
All I can say is WOW!!!!!!!!!!!
Even if i have to replace the pins at belt changes, it seems worth it to me.
the acceleration (limited so far due to cold temps) is amazing compared to the Dr. Pulley 28 gr. sliders.

Can't wait for temps in the upper 40's-50's to get more time on this setup.
So far better takeoff, no lag. No belt slap noticed.
The best part is WFO roll on. (BIG GRIN)

Again thanks, It changes a sedate scoot to a acceptable semi-hot rod.
MaxB

MaxB:
Your reaction to adding the J Costa was just like mine - and pretty everyone else who has added it. And if you really want to maximize the "Zoom factor" of your Swing, you may want to consider adding a K&N air filter, drilling the air box, and putting on a Leo Vince exhaust...

+2 for the J Costa.

I've only used it on the "other" bike, and it had a huge difference for the 250cc
Not sure that I'll ever feel the need to increase the perf of 600cc...for now!

Max,

I'm glad any info I gave helped you out. I had the J. Costa on for at least a year, and 2 pin changes, then tried the 28g sliders and now have the 21g sliders. The J. Costa is far the best performance wise but the 21g are very good too. That J. costa really makes the SWing one heck of a performer!!! Have fun and stay safe.

JeffR:
Nice to see you post. You have been rather quiet lately. Do I remember correctly that you tried out a set of Metzlers on your bike? I hope to get mine installed sometime this week and was wondering what other riders think of them. Take care.
DCC

Dear JeffR,

I m using 21g Dr Pulley Slider too (about 2 week) and can feel the performance improvement. But still feel that the Torque Spring/driven spring(the big spring at rear side) need to replace with more stiff (Malossi Brand) to prevent slipping, this can observe from "rpm". Are you agree with me??

Today, an experience mechanic told me, the performance of Dr pulley "slider type" will not last more than 3 month, due to sliding method but not the conventional rolling method. He claim that once the dust build up between the slider and variator , then will cause the sliding effective drop (the performance drop). Sametime the variator surface will damage too. Posible? or True? pl Advise

Thank you

From
Chia kk

Chia,

I really don't know enough about the rear spring to give any advice. Maybe someone else can comment on that. But I think your mechanic is totally wrong about the sliders only lasting 3 months. The 28 gram sliders I had lasted more than that and when I took them out they didn't show much wear at all. I am going to put them back in soon since the 21 grams just seem to run at too high of an rpm at the lower speeds.

I was coming home today doing 50 indicated and my rpms were at 4800, which is way too high for me. I think I will mix the weights just to see what happens but I do miss the really smooth ride with the 28 grams. Also, my variator didn't show any damage that I could see. I think your mechanic is wrong about the sliders and the variator, but that is my opinion.

Dear JeffR

Appreciate your shared experience and i felt less worry about slider now.

Thank you

From
Chia