A
Anonymous
Guest
Aha. Should be 3 to 5 inHg (76 to 127 mmHg).
Previous post edited.
Ta.
Previous post edited.
Ta.
I am sure you mean the "1972 crank case breather" and the "1972 breater tower", right? Lets be clear here, the "Combat" was an abomination on top of the 1972 Commando.needing said:Combat crank case breather.
Reverted to the 4-petal-reed-valve.
The steel balls in the Combat breather tower worked fine but for the noise!
The 'honking' of the reed valve is preferable to the 'rattle' of the balls.
Ta.
Stephen Hill said:This thread began with the intention of improving the breather.
I wondered at the outset if the mass of a 9/16 ball could track the crank pulses, or just fly around ineffectively.
Apparently the results are: it worked fine but for the noise.
Needing, did you get a chance to obtain any evidence that the breather lowered the crank pressure?
Stephen Hill
needing said:Hobot, how much vacuum do you hope the exhaust airflow may create? I don't think a Norton exhaust pulse (even 2into1) could get near 2 inHg.
hobot said:Boy does that take balls to show here but does make perfect utilitarian sense & glad not permanent welded on like my suzuki, which was too restricitve quiet so popped 4 .22 hp in to make two .38 holes that gives more distinct lower note and darn if not a bit more spunk down low. Factory black cap mufflers are also available in case eggs thrown at gatherings.
gortnipper said:Hmmm do a search for some of JimC's posts IIRC he has some test results.
needing said:gortnipper said:Hmmm do a search for some of JimC's posts IIRC he has some test results.
Thanks gortnipper. Will do.
I have seen IIRC before in threads. What does is stand for?
Ta.
needing said:gortnipper said:Hmmm do a search for some of JimC's posts IIRC he has some test results.
Thanks gortnipper. Will do.
I have seen IIRC before in threads. What does is stand for?
Ta.