Front Sprocket Again!!

[K80Shooter]

Every Spyder owner who has experienced a sprocket failure, particularly those who have experienced multiple failures, should file a complaint. It's high time BRP got their s**t together on the problem.

I totally agree. Anyone who's had this problem should file a claim.

 

[Chasinsparks]

Thanks, yes 2 times.

 

[Chasinsparks]

I do both. I do not buy that downshifting would be the root cause of the failure. If BRP engineers determine that downshifting causes the problem, they would certainly need to return to the drawing board for a a complete redesign of a FAIL system. BRP has upgraded the pulley (the new pulley being grayish white), just my guess the material or design of the teeth on the original were flawed.

 

[Chasinsparks]

I pulled the front sprocket on my 2018 RTL with around 10K miles for inspection while install a new rear tire a couple weeks ago. It still had a nice coat of grease on the splines, showed no sign of wear on the sprocket or shaft. Reinstalled with fresh moly paste assembly lube. I wonder if alone the line some were assembled dry without grease?

What color was your sprocket? For the supposed upgraded sprocket they are white/grayish which is what I now have.

 

[fatboy]

the only diff in the two sprockets is the white coating

 

[fatboy]

down shifting to brake could potentially loosen the bolt holding sprocket then working pulley back and forth

 

[Mikey]

I think if down shifting is a cause, there would be a boat load of all years and makes with this problem!! My 2 cents!! I think and still think, that it's a case of ether bad parts or some one's having rough mornings and not installing the things right from the start!:dontknow: Monday's and Friday's are hard for some people.:cheers:

 

[Mikey]

down shifting to brake could potentially loosen the bolt holding sprocket then working pulley back and forth

On a spline shaft!?!?

 

[fatboy]

yes mikey not everybody use the trans for a brake

 

[Spyderjuice]

Is it possible the motor mounts are off just a tiny bit making the pressure on the sprocket a little off to one side and causing undue wear?

Juice

 

[Snoking1127]

the only diff in the two sprockets is the white coating

You did a metallurgy test on an old one and a new one, and found them the same?

 

[Chasinsparks]

down shifting to brake could potentially loosen the bolt holding sprocket then working pulley back and forth

I guess maybe. If that is the case it need to be addressed in the engineering department no way their parts should be failing at 5175 miles with mild downshifting.

 

[bmccaffrey]

Quality Control Issue!!

 

[bikerchris1270]

the only diff in the two sprockets is the white coating

The white pulley(updated version) has a slightly different tooth profile to eliminate the whining sound from, believe it or not, air being trapped between cog and belt. The Smoaks You Tube video discusses this……..mines quieter.

 

[Snoking1127]

The white pulley(updated version) has a slightly different tooth profile to eliminate the whining sound from, believe it or not, air being trapped between cog and belt. The Smoaks You Tube video discusses this……..mines quieter.

But that has little to do with the spline wear on the earlier pulleys. Unless they changed something in the casing material the spline stripping out may still be present. (It is only a different color? I think not!)

 

[IdahoMtnSpyder]

the only diff in the two sprockets is the white coating

Correct that. The only visible difference is the white coating. My guess is they either changed the steel that is used for them, or the heat treat process after the splines are cut. Or, maybe the supplier did not heat treat the earlier ones correctly, or had a batch not properly heat treated. There may have been no way to know for certain what sprockets were or were not properly heat treated. Maybe the splines are now cut for a tighter fit.

 

[fatboy]

you do not want the metal in the pulley hardened enough to wear the splines on the crank then you have a big problem believe it or not the spyder knows down shifts that wont hurt its self

 

[Mikey]

opcorn::bbq: Now we are getting to the bottom of it!!:roflblack:

 

[IdahoMtnSpyder]

you do not want the metal in the pulley hardened enough to wear the splines on the crank then you have a big problem believe it or not the spyder knows down shifts that wont hurt its self

That's the balancing game the designers have to play. The pulley needs to be soft enough to be the sacrificial piece and hard enough not to wear down.

 

[fatboy]

if the bolt backs of from the torque of using the trans as a brake it does not matter how hard it is