Vivian Meazza wrote: > Josh Babcock > > >>Melchior FRANZ wrote: >> >>>* Josh Babcock -- Saturday 25 June 2005 00:26: >>> >>> >>>>Weekly updates at http://jrbabcock.home.comcast.net/flightgear/superfort >>> >>> >>>I committed this, as it looks very nice and even flies, and there was a >> >>kind >> >>>of consense that this should be in cvs. I have yet to be able to land >> >>it, >> >>>though. Always goes into a deadly spin if I turn ... (There's some ugly >>>garbage hanging on the right main landing gear, and both don't retract.) >>> >>>m. >>> >>> >> >>Hmm, the right one should retract. The ugly junk is for testing, and >>will go away. Right now the stall speed is unusually high, and stalls >>can get pretty violent. The turn indicator is by far the most important >>instrument right now. I have not had a chance to fix this. >> > > > I've been having a look at the yasim config files. There are some odd > entries. I've tried to do a little fixing up, but with no real success. I > think you need to go to the new propeller definitions. > > I have a nagging memory that the Wright Cyclone R-3500 was fitted with > reduction gearing between the crankshaft and propeller, although I can't > find any reference to it right now. Do you have any details of the ratio? > It's needed to migrate to the new Yasim propeller definition. > > You could use the R-2600 ratio, I suppose: > > Propeller Reduction Gear Ration (crankshaft to propeller): 16:9 > > That comes from here: > > http://wrightpattjobs.wpafb.af.mil/museum/engines/eng42a.htm > > V. > > > > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@flightgear.org > http://mail.flightgear.org/mailman/listinfo/flightgear-devel > 2f585eeea02e2c79d7b1d8c4963bae2d >
Yeah, they used 3350-23s originally. I know they are geared. The only references I have for that model engine state that it has a .355:1 gear ratio. Some later models had a .3475:1 ratio, but AFAIK none of them were ever used in the 29. Here's some references, none are what I would call really definitive. http://www.supercoolprops.com/ARTICLES/gwhitegearheads.htm http://www.sun-inet.or.jp/~ja2tko/eng/ok_b29.museum1.html http://definition-info.com/B-29.html Josh _______________________________________________ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
