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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Oil Use
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<blockquote data-quote="Martyn Goodwin" data-source="post: 46264" data-attributes="member: 2433"><p>Hi David, I actually am using a "Bunn" valve on my Comet already. The original breather shaft is in place but the breather pinion is absent. I have fitted a banjo where the original breather pipe fitted on the left side of the motor and have a hose running up under the tank. At the highest point in the hose is the one "BUNN" valve. From the BUNN valve I then have a longish hose that finally travels along the rear stand leg, exiting to atmosphere at the rear of the bike, behind the rear wheel. The hose exit position is such that any oil that gets through it to atmosphere does not land on any part of the bike. This is the ONLY breather I have installed.</p><p></p><p>I am thinking of some form of expansion chamber between the breather outlet on the motor and the BUNN valve to allow the oil to separate out asap. I should add that I have a spare <strong>used</strong> BUNN valve as well and it no longer works properly in that it no longer operates as a one way but in the meant-to-be closed direction it allows gas to flow, though slightly restricted - and yes I have cleaned it out. So I will also be checking the installed "BUNN" valve.</p><p></p><p>Personal issues mean I will not be able to get back to working on this till late next week. Will provide an update then</p><p></p><p>Martyn</p></blockquote><p></p>
[QUOTE="Martyn Goodwin, post: 46264, member: 2433"] Hi David, I actually am using a "Bunn" valve on my Comet already. The original breather shaft is in place but the breather pinion is absent. I have fitted a banjo where the original breather pipe fitted on the left side of the motor and have a hose running up under the tank. At the highest point in the hose is the one "BUNN" valve. From the BUNN valve I then have a longish hose that finally travels along the rear stand leg, exiting to atmosphere at the rear of the bike, behind the rear wheel. The hose exit position is such that any oil that gets through it to atmosphere does not land on any part of the bike. This is the ONLY breather I have installed. I am thinking of some form of expansion chamber between the breather outlet on the motor and the BUNN valve to allow the oil to separate out asap. I should add that I have a spare [B]used[/B] BUNN valve as well and it no longer works properly in that it no longer operates as a one way but in the meant-to-be closed direction it allows gas to flow, though slightly restricted - and yes I have cleaned it out. So I will also be checking the installed "BUNN" valve. Personal issues mean I will not be able to get back to working on this till late next week. Will provide an update then Martyn [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Oil Use
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