RD & RZ Crank Bearings

[marddy]

Hi,

I am quoting Part numbers of Crank Bearings from the respective Parts Manual.

In Air-Cooled RD B Manual:
Center/Inner [B6206 C3 Special] = 93306-20604
Outer Magnet side [B6305 C3 Special] = 93306-30508
Outer Clutch side [B6305 C3 Special] = 93306-30508

In RZ 48H Manual:
Outer Magnet side = 93306-30510
Outer Clutch side = 93306-30531
Center/Inner side = Not mentioned

In RZ 350 N/NC/NC2 Manual:
Outer Magnet side = 93306-30564
Outer Clutch side = 93306-30549
Center/Inner side = Not mentioned

In 31K Manual:
Outer Magnet side = 93306-30510
Outer Clutch side = 93306-30531
Center/Inner side = Not mentioned

Need info/clarity:

1] I thought Air-cooled RD Outer Bearings [Magnet side] can also be used as Inner Bearings in the RZ.
2] Why are the Part numbers of Crank Bearings of 48H & 31K different from 350 N/NC/NC2 models?
3] All three YPVS Manuals does not mention about Center/Inner Bearings. Why?


I am eager to know as I have to procure Crank Bearings for my 2 AC RDs and 1 RZ.

[chippy348]

1] I thought Air-cooled RD Outer Bearings [Magnet side] can also be used as Inner Bearings in the RZ.
Correct they are the same 
2] Why are the Part numbers of Crank Bearings of 48H & 31K different from 350 N/NC/NC2 models?
Don't know why but they are the same bearing size. 
3] All three YPVS Manuals does not mention about Center/Inner Bearings. Why? I believe they only offer a complete center section IE 2 inner webs, 2 center bearings all pressed onto the center shaft so this is why they don't list them as a separate part.


   

[Tone]

In answer to question 2) I seem to remember reading that on the later N2 and F2 models they increased the clearance between the balls/races of the crank bearings, so probably why the change in part numbers.

Tone

[greasemeup]

Bigger Balls then?



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[marddy]

Sept 5, 2014 7:32:05 GMT 1 greasemeup said:

Bigger Balls then?



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No, this is not the case.