Was Alley right about Dr. Pulley Variators ?????????
by: rcq92130 - Jan 6, 2015 20:51:04 GMT -5
jerseyboy, scooter, and 1 more like this
Post by rcq92130 on Jan 6, 2015 20:51:04 GMT -5
So here is my saga about the Dr. pulley variator installed about 1,000 miles ago.
All seemed fine - G R E A T acceleration, not bad top end --- but i just couldn't get above 6,500 RPM with the 11gr sliders ... so I ordered 9gr sliders to see if that would help (side bar: the problem was the 'performance CDI).
After taking the CVT cover and variator drive plate off i discovered these BADLY mangled sliders !!!
HOLY COW !!!!!!!!!!!!!!!!! Now, maybe i put them in backwards .... but i was pretty deliberate when I put this on. Wow.
Here is the variator. Note all the galling of the ramps:
And here is the other face with something very interesting about the casting:
Note at the place where the fingers join to the hub there is a lip.
OK, so I tossed the thrashed sliders and just went with all 6 9gr sliders, A week later I had some time so I went back in to install a new belt (the original Bando had 2 troubling cracks - only 1,000 miles) and check things out. Here are the NEW sliders with only about 100 miles on them. Note the damage already:
At first I thought it was the somewhat roughened surface of the ramps, but that doesn't explain the damage. Then i looked at the lip. First thought - grind that puppy down:
But then I had an "ah ha!" and went digging through the parts box to find the OEM part from the original small variator that came with the scooter. Here is the OEM one (on the right) next to the (ground down) Dr. Pulley one (on the left). Note there is NO LIP on the OEM plate:
And - a bit of a surprise - the OEM plate fit the Dr. Pully variator perfectly. So now I'm thinking the sliders (at low RPM) would bang against this lip and pretty quickly get boogered up. If that is true, Dr. Pulley has a SERIOUS design flaw in their variators!
So, I did the best I could to polish up the ramps
And put the variator back together with the somewhat damaged sliders:
My guess is that with the damage already done --0- and the less than perfect ramp surfaces - this will not last long. Probably I should just order a different variator and some sliders and be ready for a change. But unless I was REALLY careless and dumb, and put TWO sets of sliders in improperly --- this Dr. P variator isn't exactly something I'd recommend very highly.
Or maybe i really AM that careless and stupid .....
All seemed fine - G R E A T acceleration, not bad top end --- but i just couldn't get above 6,500 RPM with the 11gr sliders ... so I ordered 9gr sliders to see if that would help (side bar: the problem was the 'performance CDI).
After taking the CVT cover and variator drive plate off i discovered these BADLY mangled sliders !!!
HOLY COW !!!!!!!!!!!!!!!!! Now, maybe i put them in backwards .... but i was pretty deliberate when I put this on. Wow.
Here is the variator. Note all the galling of the ramps:
And here is the other face with something very interesting about the casting:
Note at the place where the fingers join to the hub there is a lip.
OK, so I tossed the thrashed sliders and just went with all 6 9gr sliders, A week later I had some time so I went back in to install a new belt (the original Bando had 2 troubling cracks - only 1,000 miles) and check things out. Here are the NEW sliders with only about 100 miles on them. Note the damage already:
At first I thought it was the somewhat roughened surface of the ramps, but that doesn't explain the damage. Then i looked at the lip. First thought - grind that puppy down:
But then I had an "ah ha!" and went digging through the parts box to find the OEM part from the original small variator that came with the scooter. Here is the OEM one (on the right) next to the (ground down) Dr. Pulley one (on the left). Note there is NO LIP on the OEM plate:
And - a bit of a surprise - the OEM plate fit the Dr. Pully variator perfectly. So now I'm thinking the sliders (at low RPM) would bang against this lip and pretty quickly get boogered up. If that is true, Dr. Pulley has a SERIOUS design flaw in their variators!
So, I did the best I could to polish up the ramps
And put the variator back together with the somewhat damaged sliders:
My guess is that with the damage already done --0- and the less than perfect ramp surfaces - this will not last long. Probably I should just order a different variator and some sliders and be ready for a change. But unless I was REALLY careless and dumb, and put TWO sets of sliders in improperly --- this Dr. P variator isn't exactly something I'd recommend very highly.
Or maybe i really AM that careless and stupid .....
