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Miraphone valve venting
Posted: Thu Jan 28, 2010 1:54 am
by Bob Kolada
Does Miraphone vent the valves on any of their current models? I have read "hit or miss" on older ones, but don't know anything about their current practice.
Re: Miraphone valve venting
Posted: Thu Jan 28, 2010 6:14 am
by pwhitaker
The 5 valve BBb 1291 I bought new in 2006 had both the 3rd and 4th valve vented IIRC. Since I only (and rarely) pulled the 1st slide this didn't seem to be very useful.
Re: Miraphone valve venting
Posted: Thu Jan 28, 2010 7:35 am
by bort
My 1291 CC (made in 2004 or 2005) has all 4 pistons vented. I assumed this was stock, and just another feature of the 1291 I like!
Re: Miraphone valve venting
Posted: Thu Jan 28, 2010 7:39 pm
by bububassboner
All six valves on my Firebird are vented.
Re: Miraphone valve venting
Posted: Thu Jan 28, 2010 8:36 pm
by tubatom91
I've yet to see a miraphone rotary CC with stock vented valves.
Re: Miraphone valve venting
Posted: Thu Jan 28, 2010 9:14 pm
by Bignick1357
I have an 80 something 186 and none of mine are vented
Re: Miraphone valve venting
Posted: Fri Jan 29, 2010 8:45 am
by jeopardymaster
tubatom91 wrote:I've yet to see a miraphone rotary CC with stock vented valves.
You must not get out much.
Re: Miraphone valve venting
Posted: Fri Jan 29, 2010 9:13 am
by UTSAtuba
I had a '74 Mirafone 186 5U CC that had (from what I can tell) factory vented valves. The previous, and first, owner gave me no indication that he had done this himself.
Joseph
Re: Miraphone valve venting
Posted: Fri Jan 29, 2010 10:06 am
by tubatom91
jeopardymaster wrote:tubatom91 wrote:I've yet to see a miraphone rotary CC with stock vented valves.
You must not get out much.
I've seen a lot of horns, of all the Miraphones I've played only the F's had stock vented valves. My 188 needs them pretty bad, subtle temperature changes make them go "pop" when I want to play, so I'm constantly fiddling with the valves clearing the pressure.
Re: Miraphone valve venting
Posted: Fri Jan 29, 2010 2:38 pm
by jeopardymaster
My 184-5U CC was delivered to me new in December 1974 with all valves vented at the factory. Serial number is 9275.
Re: Miraphone valve venting
Posted: Sat Jan 30, 2010 11:55 am
by windshieldbug
jeopardymaster wrote:My 184-5U CC was delivered to me new in December 1974 with all valves vented at the factory. Serial number is 9275.
My 184-4U CC was delivered with all valves vented in 1974, also. Serial number 9136.
Re: Miraphone valve venting
Posted: Sat Jan 30, 2010 12:12 pm
by iiipopes
Next question: has anybody seen factory vented valves on rotary instruments that also have the little set screws like on the bottom valve caps so the casings can be closed off when desired?
Re: Miraphone valve venting
Posted: Sat Jan 30, 2010 7:17 pm
by PWtuba
pauvog1 wrote:I've seen meople mention venting valves, but I'm not familiar with this. What does this mean?
There are small holes drilled in the valve which prevent pressure build up. Ever pulled a slide without pushing the valve, and heard the pressure build up, followed by a 'pop' when you push the button? That is eliminated with vented valves.