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 Post subject: Variator Grinding on Case
PostPosted: Fri Aug 05, 2016 4:22 pm 
Start up, hear rattling in the swingarm. Snatched it all apart and the drive face was loose. Crunk it up again with the swingarm cover off and thats where the rattling is from. Pulled it off and noticed NEW SHINEY METAL on the swingarm casing :banger:

Ramp plate is grinding on the casing :headbashing: SO, i pulled apart the stock motor i have to check the drive boss lenghts, SAME. You can see in the last 2 pics how much play there is when i torque the nut.

What could be the cause of this? Can i get away with putting a washer between the ramp place and shaft bearing? HELP OBI!

MY CASING WEAR
Image

STOCK CASING NO WEAR
Image

MINE VS STOCK RAMP PLATES
Image

LIKE A BOSS
Image

NO GAP
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GAP
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Any assistance is greatly appreciated! :highfive:

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 Post subject: Re: Variator Grinding on Case
PostPosted: Fri Aug 05, 2016 8:26 pm 
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Here is what's causing the rubbing. Look at the difference in depth of that ridge at the base of the shaft. What I'm not sure of, is why it's different. From the parts catalog, it looks like that's all part of the crankshaft.
The first thing id do is make sure the crankshaft doesn't have any play (try to move it in and out).
If there's no play, I'd just throw a washer in (make sure it has the same inner and outer diameter as that ridge). Then I'd keep an eye on it from time to time.

Good luck.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Fri Aug 05, 2016 10:32 pm 
ZACH wrote:
Here is what's causing the rubbing. Look at the difference in depth of that ridge at the base of the shaft. What I'm not sure of, is why it's different. From the parts catalog, it looks like that's all part of the crankshaft.
The first thing id do is make sure the crankshaft doesn't have any play (try to move it in and out).
If there's no play, I'd just throw a washer in (make sure it has the same inner and outer diameter as that ridge). Then I'd keep an eye on it from time to time.

Good luck.

Yes i understand what your saying. Not sure if that's part of the shaft or the bearing itself.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Fri Aug 05, 2016 10:40 pm 
Looking at the parts catalog, that is just a seal. That ridge appears to be part of the crankshaft itself.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Sat Aug 06, 2016 4:00 am 
ZACH wrote:
Looking at the parts catalog, that is just a seal. That ridge appears to be part of the crankshaft itself.


That is correct. The shaft steps up to a larger diameter where the bearing is. Ill check if the shaft has any horizontal movement today.

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Last edited by CCiPhantom on Sat Aug 06, 2016 4:23 am, edited 2 times in total.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Sat Aug 06, 2016 4:05 am 
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I would add a thin washer behind the ramp.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Sat Aug 06, 2016 9:39 am 
Just looked at a crank I have laying around and it has a similar look as happy's. Yors appears to be barely coming through the seal. Also the plate off your polini looks bent. Is it? The crank bearings have clips around them that fit into grooves in the case to prevent crank walk. If it moves in/out any I'd pull the case open.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Mon Aug 08, 2016 7:05 am 
No shaft play (at least non form pull/pushing on it). My ramp plate is not bent from what i can tell. The shaft where it steps up in diameter is not worn so i am not sure how its set back further than the stocker. The rubbing did get into the bearing dust seal but not enough to effect it i assume. Stuck a 14mm washer on there and torqued her back down and rides like normal. But i am still concerned on how i lost that space between the ramp plate and case.....

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 Post subject: Re: Variator Grinding on Case
PostPosted: Mon Aug 08, 2016 11:54 am 
I added a washer that fits over the splines to prevent the driveface from wiggling.
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 Post subject: Re: Variator Grinding on Case
PostPosted: Mon Aug 08, 2016 8:50 pm 
CCiPhantom wrote:
No shaft play (at least non form pull/pushing on it). My ramp plate is not bent from what i can tell. The shaft where it steps up in diameter is not worn so i am not sure how its set back further than the stocker. The rubbing did get into the bearing dust seal but not enough to effect it i assume. Stuck a 14mm washer on there and torqued her back down and rides like normal. But i am still concerned on how i lost that space between the ramp plate and case.....


I'd just keep an eye on it. Pull it off from time to time look everything over.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Tue Aug 09, 2016 12:23 pm 
Happypancake! wrote:
I added a washer that fits over the splines to prevent the driveface from wiggling.

Yea i cannot do that, it would only cause further grinding lol. My issue is the crankshaft is set further back than normal in which i am trying to figure out without tearing the case apart.

Anyone have bad crankshaft guides causing crank walk? If so could you move the shaft laterally by hand?

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 Post subject: Re: Variator Grinding on Case
PostPosted: Tue Aug 09, 2016 1:06 pm 
Gimme your addy and I'll send you a spare polini ramp plate I have laying around. See if it helps any.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Wed Aug 10, 2016 5:26 am 
fasterthanme wrote:
Gimme your addy and I'll send you a spare polini ramp plate I have laying around. See if it helps any.

Awesome I appreciate that but I don't think it would help without the washer back there because the landing on the shaft (bigger diameter) that its supposed to ride with, is flush with the bearing and GETting into the case. Its is obvious that the ramp plate just has surface scratching and the casing is what wore down because of each metal composition. Trying to figure out what caused the offset since I cant move it by hand.

See my "sketch" below (made this on bluebeam, not enough time to make it on CAD or Sketchup since im at work :meh: ) Sorry its the best i could do at the moment haha!

Image

So yea, the 14mm washer on the shaft has just the same OD as the larger diameter of the shaft so "it should" keep the gap between the ramp plate and the case and just spin with the assembly...

How it is currently...
Image

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 Post subject: Re: Variator Grinding on Case
PostPosted: Wed Aug 10, 2016 8:47 am 
that is indeed odd. sory I have nothing to help. is it possible that the polini you ordered is the wrong one for the ruckus? did it used to not do this? maybe you are just now noticing it because it wore enough to stat making noise. if you still have the package, I would double check tha part no. to make sure this variator is in fact intended for the ruckus.

other than that I am out of ideas.

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 Post subject: Re: Variator Grinding on Case
PostPosted: Fri Aug 12, 2016 1:08 pm 
No I dont think you understand lol, its NOT THE RAMP PLATE :headbashing: I don't know how else to explain it, few others get it but i spelled it out with colors haha!

The BLUE is supposed to ride with the RED (Acts like a stop, so it doesn't go further out when its moving from centrifugal force)

The BLUE IS NOT supposed to ride with the GREEN

Since it's riding with the GREEN, its grinding on the case

I Added the PINK to make up the RED offset.

Either my shaft shifted over ( i would assume the crankshaft guides) but if it did i would think i would have a lot more problems.

Or my shaft shifted over... I don't know, the bearing is supposed to be set further back where it is currently.

So, spins buttery smooth, no oscillation, no noise, no speed problems, no slipping, no idea :pissed:

Thats my last resort on explanation :banger: Time to swap the spare and GET to tearing this one down.

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