Would you make the wheel on a metal lathe? I would think you could use a metal lathe for some of the smaller-diameter parts and make the wheel on a wood lathe. In the absense of a wood lathe, you could even cut the rough shape of the wheel on a band saw with some further shaping by mounting it on a drill press. The final truing, of course, would be in-place with a scraper. Stan
On Mon, Nov 7, 2011 at 9:57 AM, Kazimierz Verkmastare <[email protected]> wrote: > Since the most common hobby metal lathe is an Altas 6 inch or one of the > clones, there is compelling reason to consider parts that can be made on > this lathe, if there is no acoustic or performance reason not to. > Remember, this is not a thread to see what kind of a compromise gurdy we > can build, it is to see if a truly reasonable instrument can be built, at > or below the cost of a professionally built instrument, but an average > craftsman. > > I have no specific knowledge of anything that would make a 6 inch wheel > better or worse than a 7, so I will ask the builders and players if they > can give a reason to stay with 7 inch or can agree on the 6 inch (152 mm) > instead. > > Chris > > > > > Just a thought , 7" is pretty much standard for lute backed > > instruments but it's worth considering a smaller wheel - say 6" > > which is more the norm for Guitar bodied gurdies. The smaller wheel > > makes no difference to articulation of trompette ( imho ) . The > > slower rim speed helps to minimise the unpleasant resonances that > > can occur and the overall volume is slightly less. A 6" wheel may > > also be a more practical size for those with only access to a small > > lathe. I use an average of 16mm for rim width and 18mm rim to > > bridge.Regards > > Neil > > On 7 Nov 2011, at 07:24, [email protected] wrote: > > > >> > >> Today's Topic Summary > >> > >> > >> Group: http://groups.google.com/group/hurdygurdy/topics > >> > > - ***Builder HG*** Current 'Builder HG' specifications [7 Updates] - > > Brocker translation is now available online [2 Updates] - *** > > Builder HG*** specification responses [1 Update] > >> > >> > >> ***Builder HG*** Current 'Builder HG' specifications > >> > >> > >> Kazimierz Verkmastare <[email protected]> Nov 06 09:21AM -0600 > >> > >> > > So I am going to start this new thread, called 'current builder HG > > specifications. Please do not respond to this thread - responses > > should be to the thread 'specification responses' previously > >> ...more > > > >> > >> Arle Lommel <[email protected]> Nov 06 12:45PM -0900 > >> > >> > > I would suggest making all measurements in metric, and setting the > > default wheel size at 178 mm, for the reasons listed below: > > > > Alden's size (7" = 177.8 mm) is normal for western instruments, > > which > > > >> ...more > > > >> > >> Alden and Cali <[email protected]> Nov 06 02:20PM -0800 > >> > >> > > I agree - specs should be metric whenever possible. > > > > We end up using metric, fractional inches, and decimal inches in > > the shop, because our various tooling demands different things. > > I'd be > > > >> ...more > > > >> > >> Scott Gayman <[email protected]> Nov 06 04:32PM -0800 > >> > >> > > Hello Chris, > > > > If you are basing it around a non-trompette sinphone then it could > > have a smaller wheel. The standard concensus regarding wheel > > diameter is that larger wheels make for better control > >> ...more > > > >> > >> Kazimierz Verkmastare <[email protected]> Nov 06 06:59PM -0600 > >> > >> > > I thought we were going for an instrument with 2 chanterelle, a > > petit bourdon, a gros bourdon, and a chein. This would give the > > opportunity to design around and learn how to set up pretty much > > every > >> ...more > > > >> > >> Kazimierz Verkmastare <[email protected]> Nov 06 07:02PM -0600 > >> > >> > > I agree, metric (I will convert to US as necessary to use my tools) > > should be the standard. > > > > Now I need to go out and get a couple decent metric straightedges > > (and metric pencil lead - 0.7mm for my > >> ...more > > > >> > >> Kazimierz Verkmastare <[email protected]> Nov 06 07:07PM -0600 > >> > >> > > OK, to go with the wheel diameter (enough for coup control, not so > > much as to eliminate the possibility of some of the faster central > > European based music) what about rim width. Is a perimeter > >> ...more > >> > >> > >> Brocker translation is now available online > >> > >> > >> timw <[email protected]> Nov 06 06:01AM -0800 > >> > >> > > Thank you both! > > > > This is really appreciated, and I know it took a lot of work for > > everyone involved. Thanks for adding this information to the group. > > Tim > > > >> ...more > > > >> > >> Ulrich Joosten <[email protected]> Nov 06 08:01PM +0100 > >> > >> > > Dear all involved people, > > > > thank you for this great treat. It was long overdue that this > > standard work is now available in English language. Really big > > kudos for this big effort to all involved > > > >> ...more > >> > >> > >> ***Builder HG*** specification responses > >> > >> > >> Kazimierz Verkmastare <[email protected]> Nov 06 09:21AM -0600 > >> > >> > > In order to keep track of everything we are discussing, I propose > > we keep 3 threads alive on the builder topic. > > > > The first set of threads should have ***Builder HG*** > > Specifications for proposed > > > >> ...more > >> > >> > > You received this message because you are subscribed to the Google > > Group hurdygurdy. You can post via email. > > To unsubscribe from this group, send an empty message. For more > > options, visit this group. > > > > > >> -- > > You received this message because you are subscribed to the Google > > Groups "hurdygurdy" group. > > To post to this group, send email to [email protected] To > > unsubscribe from this group, send email to > > [email protected] For more options, visit > > this group at http://groups.google.com/group/hurdygurdy The rules > > of posting, courtesy, and other list information may be found at > > http://hurdygurdy.com/mailinglist/index.htm. To reduce spam, posts > > from new subscribers are held pending approval by the webmaster. > >> > >> > > Best regards > > > > > > Neil Brook > > > > > > [email protected] > > -- > You received this message because you are subscribed to the Google > Groups "hurdygurdy" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/hurdygurdy > > The rules of posting, courtesy, and other list information may be found at > http://hurdygurdy.com/mailinglist/index.htm. To reduce spam, posts from > new subscribers are held pending approval by the webmaster. -- You received this message because you are subscribed to the Google Groups "hurdygurdy" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hurdygurdy The rules of posting, courtesy, and other list information may be found at http://hurdygurdy.com/mailinglist/index.htm. To reduce spam, posts from new subscribers are held pending approval by the webmaster.
