RGS front hub missing dished washers and floating rotor questions

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woodlawn

New member
Location
CT USA
Good afternoon all. 12 years in the forum and still a newbie ha ha. So I popped out my front bearings today and there is only the spacer. No washers. I double checked. Is this one of those some have it some don't scenarios? Or is it likely the PO never put them back in? Do I need them? I bought the bike with 52k miles.
Next topic. I would like to replace my floating rotor assemblies (not sure brand- 12 buttons) see pic. 70k miles now and the carriers have a bit of fore and aft wear. I can't seem to find a set listed as compatible with my RGS. Any thoughts on availability, brand, supplier is greatly appreciated. Thanks as always.
Charlie
 

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There should be minor lateral slop in floating or semi floating rotors, but if yours are excessive see the rotors that Bevel Heaven in CA offers- there is some Brembo carry over between Ducati and Laverda, and Steve Allen can help you sort it out.
I’ll see if my Green Book has a schematic for the front wheel spacer but someone else will most likely have the answer.
 
Metalgear in Brisbane Australia have added those brake rotors with the correct offset to their product line recently

Or they can be fitted with oversize buttons, have done probably 18 of them now, we machine our own buttons from stainless and then set the rotor up in a fixture to bore each individual hole to size
Once done fit the oversize buttons with Wave washers and Circlips
Come up well
 
By dished washer I guess you mean these? They fit in the casting behind the wheel bearings.
If you fit new sealed wheel bearings (2RS type) then they are only used as a spacer - dished bit goes to the inside, away from the bearing.
Thickness is 0.7mm, so if you leave them out the spacer between the bearings is likely to be around 1.4mm too long, may prevent the bearings from reaching the bottom of the housing.
OCT in Germany has them, I would guess Wolfgang Haerter in Canada may have them as well.
Or make some up from shim stock.
HTH
Steve
BIMG_4989.jpg
 
My Green Book schematic of a front wheel w dual rotors shows a tubular spacer between the bearings and a shorter spacer outside the bearing next to the nut on the end.
Again, some lateral flex is OK for a floating rotor, but flex in a clockwise motion is not good. Bevel Heaven sells Brembo rotors ( for a price) that will fit.
EBC also sells similar size and spec rotors but some say the speedo drive is an issue.
 
The washers are 100% a DPO omission and should be sourced/fitted before reassembly. They locate the central tube when the wheel is removed and also set the correct bearing position in the wheel and hence most likely the correct side to side position of the installed wheel.
 
Thanks fellas, I requested an order from Wolfgang including the rear washers as they were quite rusty.
I am replacing all the bearings on the bike. Trying to get to the source of a significant vibration that appeared this fall. Have stripped the headstock and carefully checked the frame including some minor paint removal. New tires coming. But that's a well worn thread...
Charlie
 
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