MP 2011 drive shaft diameter?

[perza]

I should make an order from wahl bros no-slip drivers for my 2011 MP. The sled is 250km away. So, I can not measure the drive shaft for choosing the right size driver. I found from 2007 service manual the hexagonal diameter 1.06" (27mm). Is the diameter still the same on 2011?
I looked from Yamaha exp views that at least the part numbers are not the same 8GJ-47511-20-00 (2011) and 8GJ-47511-00-00 (2007). Seems that it has changed 2009. I'm not sure but I think I've heard that some years ago Yamaha changed the axle for thicker and stronger. Anybody who knows?

 

[Mooseman]

Why not contact Wahl Bros directly? If they have no idea about the Venture Lite/MP, tell them it's the same as the Phazer of the same years as they usually mirror changes to both.

 

[perza]

I asked from two WB retailers here in Finland. At first, both said that the axle is 27mm as it is in that 2007 manual. But when I mentioned that the part number is not the same in 2007 & 2011, they were not so sure anymore. Maybe I wait until the weekend when I have possibility to measure it

 

[Mooseman]

It's possible that the number was changed for 2011 but wasn't superceded for the 2007 yet. It would show up when the dealer would order it on their system.

 

[perza]

I measured the diameter and it is still 27mm in 2011. I don't understand why the part number has been changed. Neither local Yamaha dealer knew answer for that. Maybe there is some other changes than the shaft diameter, material etc..?

 

[Mooseman]

Could be just an internal thing or it was improved in some way, like the type of metal or a new supplier. Sometimes they just change the numbers.

 

[Psycho Dave]

2007-2008 Chain sprocket is held in place with a bolt.
2009- Chain sprocket is held in place with a nut.

 

[perza]

tack/thanks Dave!