POLL - B&S/M-W piston tubas

ZachDomrese · Post by **ZachDomrese** » Thu Dec 30, 2010 10:26 am

I actually replaced the springs in my PT-606p with Yamaha springs

Timswisstuba · Post by **Timswisstuba** » Thu Dec 30, 2010 2:13 pm

bloke wrote: The idea of the poll is to encourage Markneukirchen to either supply springs that are more like Yamaha springs, or cut out their bottom caps to better fit Yamaha springs.

It might be easier to convince BMW to change their gas tank caps to fit Honda's.
Good Luck!

Timswisstuba · Post by **Timswisstuba** » Thu Dec 30, 2010 3:20 pm

Bloke,

I never thought I'd say this but you and Roger Bobo share a fondness for Japanese springs....

http://bomaestro.blogspot.com/2009/04/h ... ssoms.html" target="_blank

Tim Sullivan- Switzerland

shoedumas · Post by **shoedumas** » Thu Dec 30, 2010 4:09 pm

Interesting! Can't say I've played a B&S/MW piston tuba before, only ever rotary, so I'm not sure what I'd prefer. But I do have a MW 551S Euphonium, never had an issue with the valves, but I wonder if I'd like Yamaha springs better? I'll bring my euph into my shop sometime soon and get back to you on this.

dougtuba · Post by **dougtuba** » Thu Dec 30, 2010 9:14 pm

Just wondering whether it is necessary to modify the bottom caps on a 606P in order to use the Yamaha springs. I'd be interested in seeing for myself the difference in the valve action.
Doug

ZachDomrese · Post by **ZachDomrese** » Thu Dec 30, 2010 11:58 pm

dougtuba wrote:Just wondering whether it is necessary to modify the bottom caps on a 606P in order to use the Yamaha springs. I'd be interested in seeing for myself the difference in the valve action.
Doug

My springs fit perfectly. I don't know if the guy I had change them did anything else to them though...

Chris Olka · Post by **Chris Olka** » Fri Dec 31, 2010 12:27 am

It should be a rather simple step to make a collet for the bottom valve caps and machine out the proper width for Yamaha springs on a lathe. Just a facing cut. FWIW. Could make some repair tech a little pocket change to offer this mod...just thinking out loud.
Chris Olka

sloan · Post by **sloan** » Fri Dec 31, 2010 1:36 am

Chris Olka wrote:It should be a rather simple step to make a collet for the bottom valve caps and machine out the proper width for Yamaha springs on a lathe. Just a facing cut. FWIW. Could make some repair tech a little pocket change to offer this mod...just thinking out loud.
Chris Olka

I'm thinking you could kill two birds with one stone by making these HEAVYWEIGHT.

Chris Olka · Post by **Chris Olka** » Fri Dec 31, 2010 12:03 pm

Bloke, good point but I was just thinking of using an Aluminum collet that wouldn't mar the knurling. Take a spud, cut it out and face it hollow, then hit it with the band saw to give it a some wiggle room for the caps and VIOLA! VOILA?! Cello...? one of those French instruments...

ArnoldGottlieb · Post by **ArnoldGottlieb** » Fri Dec 31, 2010 12:28 pm

I've played my B&S for 10 years without Yamaha springs, so I might not need them. But, what would they do differently that what I have?

TubeNet

POLL - B&S/M-W piston tubas

I own a B&S/M-W 19mm bore piston valve tuba, and I wish

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