valve section (lack of) compression
- dbwhitaker
- Posts: 196
- Joined: May 16, 2019
Should a valve section be relatively air tight? If I insert the F tuning slide on my TR-180 without opening the rotor I feel very little resistance and I can hear air escaping for about 2 or 3 seconds. I can't do this on my 50B2 -- both valve sections put up a fight and hold pressure.
- ithinknot
- Posts: 1339
- Joined: Jul 24, 2020
[quote="dbwhitaker"]Should a valve section be relatively air tight?[/quote]
Yes.
Assuming everything's lubricated properly, the rotor might be absolutely fine, but misaligned and thus not sealing. Or it's worn and leaking... or there's a broken or never-soldered joint somewhere, or a crack, or...
Yes.
Assuming everything's lubricated properly, the rotor might be absolutely fine, but misaligned and thus not sealing. Or it's worn and leaking... or there's a broken or never-soldered joint somewhere, or a crack, or...
- Jimkinkella
- Posts: 286
- Joined: Mar 23, 2018
[quote="ithinknot"]<QUOTE author="dbwhitaker" post_id="172542" time="1645891064" user_id="6503">
Should a valve section be relatively air tight?[/quote]
Yes.
Assuming everything's lubricated properly, the rotor might be absolutely fine, but misaligned and thus not sealing. Or it's worn and leaking... or there's a broken or never-soldered joint somewhere, or a crack, or...
</QUOTE>
Or misaligned slide tubing, or out of round slide tubing...
Should a valve section be relatively air tight?[/quote]
Yes.
Assuming everything's lubricated properly, the rotor might be absolutely fine, but misaligned and thus not sealing. Or it's worn and leaking... or there's a broken or never-soldered joint somewhere, or a crack, or...
</QUOTE>
Or misaligned slide tubing, or out of round slide tubing...
- Estraven
- Posts: 122
- Joined: May 05, 2021
Hmmm… I have a valve that has something like .01” gap between the rotor and the shell. Its so bad I can’t write it off to just wear, it has to be bad quality control at time of manufacture.
I cannot get this horn to “slot” notes to save my soul. Could the bad rotor be the reason?
I cannot get this horn to “slot” notes to save my soul. Could the bad rotor be the reason?
- Burgerbob
- Posts: 6327
- Joined: Apr 23, 2018
[quote="Estraven"]Hmmm… I have a valve that has something like .01” gap between the rotor and the shell. Its so bad I can’t write it off to just wear, it has to be bad quality control at time of manufacture.
I cannot get this horn to “slot” notes to save my soul. Could the bad rotor be the reason?[/quote]
I doubt it would be anything else.
I cannot get this horn to “slot” notes to save my soul. Could the bad rotor be the reason?[/quote]
I doubt it would be anything else.
- Doug_Elliott
- Posts: 4155
- Joined: Mar 22, 2018
20w-50 or straight 30 should seal it