[Best place for trading classic yamahas?]

It's time to pass on the xs250, only because I don't use it. The classifieds boards here don't have many viewings, ebay is full of ****heads and scammers, and biketrader / MCN are really only for newer bikes. Has anyone found somewhere were I could sell it?

[XS650 oil pressure question]

I have an xs650, bigger oil pump, oil cooler, and remote filter. The Tacho cable is taken off the oil pump, so if the Tacho stops woking, the oil pump may not be working either. As we all know, the XS650 uses roller bearings, so the oil pressure / flow is low compared to engines with plain bearings. Has anyone got any idea what the Maximum and Minimum pressures should be, and does anyone know where I can get a mechanical pressure guage for this range?

 

[another xs250 not charging]

sorted. Duff rectifier. Thw cheap chinese replacement was new but also duff. I replaced the stock rectifier with with a regulator / rectifier from a late model vfr800 honda and it works fine now. I had to modify the mounting to fit the new reg/rec in the same place.

[another xs250 not charging]

no, it's the later type with 2 sets of static windings and a rotor in between

[another xs250 not charging]

1980 xs250se low miles as it has been sitting. 13.6v at 4000rpm, 12.9v at 4000rpm with the lights on. Changed the reg/rec to single unit from the 2 solid state items (xs750/850 item). 4ohm resistance between the white wires, 0ohm between brown and green.

I am not sure how these generate power, but is the rotor supposed to be a permenant magnet, or is it charged by the inner stator? (brown/green wires).

anything else I can check before I go nuts with a sledge hammer?