So some of you have heard me complain about how bad conditon my high school's sousas are in. Well I was told to wait until off season (by my director, but if I could sneak them all away for one weekend I could do it before then) to do the air leak test that was suggested to me by Tubeast. I also want to clean out all of the pipes and valves and casings to get any junk out of them. Do you guys think something like this
http://www.amazon.com/HW-Products-UBSTU ... 966&sr=1-1 would work fine for that job? Also should I look into having the valves realigned? Some of the valves on our instruments are slow and/or scrape (an audible scrape) even after adding valve oil (which even with Al Cass oil it has to be applied often because some the valves like to randomly be dry a day after you oiled them). We already had to have one valve and valve casing replaced so it could be we will have to do that on some of the others. It was a quality issue that caused that (valve guide channel was drilled unevenly/too wide by a couple of mm, causing the valve guide to slip out of the channel making it completely stuck, when it was removed they figured the valve had to be replaced along with the casing) they are Yamaha YSH-411 sousas. Also what would you do for a sousa that has one slide that is the wrong slide in it (I don't know how it happened, it just did). The slide in question is the 3rd valve spit valve slide (I hope so of you are familiar with this sousa) which is almost the same as the main tuning slide/spit valve slide except not as wide by a few mm (for whatever reason, a main tuning slide was used instead and was jammed into that slot).
I am probably forgetting a question or three about repair on these things (that were never taken care of) but I do have one more question, which I am sure is fairly obvious but the person who keeps on telling me the opposite probably won't shut up until I have proof. That question is:
Which can be played/was made to be played louder: A sousaphone or a contrabass bugle?
Lets just assume its the same player playing each with the same mouthpiece and it is a midrange note like a tuning Bb and both are in perfectly functioning condition.
Now I am assuming the sousa since it its generally bigger and has a much much larger bell (my reasoning may be completely off but you are here to correct that if it is).