dkshema
rrProfessor
Location: Cedar Rapids, IA
| | Quote |
| if you run at perfect ballpark you only got 1850, or less headspeed, of course you can always go lean or high on nitro.
|
My motor is a YS50. I changed the countershaft pinion to get the 9.1:1 ratio (which if you count the teeth and do the math, is really 8.97:1), running 15% fuel, I've been tached at as high as 2200 RPM, typically about 2000 - 2100. I'm not tweaked overly lean, the YS purrs along and has is quite happy in the air.
I don't know what the problem you cite with the swash is, but the Caliber 5 feels as good as, if not better, than my EVO50 does in the air, I'm flying the EMS linkage kit to get CCPM control.
The only problem I see with the swash is that I'd like to have the all-metal one from my Caliber 4 on it, instead. That is one nice swashplate.
I did put some slightly longer balls on the swashplate (for the links that go up to the head), and put some small washers about one mm thick under the front and rear ball to give me a bit more clearance for the A-arms at full deflection).
The muffler I've been flying is the MP5, put that on back in July 2007. Prior to the MP5 I was using the stock muffler. The YS is much happier with the MP5 than it was with the stock exhaust, but the stock exhaust was not horrible, it worked pretty well.
MR blades are Radix 600s, TR blades are Radix 95s.
Prior to putting in the YS, I was running a Hyper 50, stock muffler, same 15% fuel and the 8:97:1 gearing. The Hyper was also running quite happily, not too lean, and again, I was tached in the 2000-2100 RPM range on an average flight.
I haven't had to work hours to get things right. I originally was using JR DS811s on the swash control, in late August I changed those out for some Hitec HS6975HB servos. Faster, more torque. The DS811s worked well, I didn't notice any sluggishness, and again, the heli felt as good as, if not better, than my EVO 50 in the air.
The BIG difference appears to be in your signature line...if you're truly flying at 8000 feet above sea level, you have a serious handicap.
I lived in Kansas City, Missouri, for about three years, it's about 850 feet above sea level at Lake Jacomo/Fleming Park (if I remember correctly) where I used to fly. This was in the mid 1980s, my 12 pound Schluter Superior flew very well with its HP61 Gold Cup motor. I moved from Kansas City to Albuquerque, New Mexico, with an altitude of about 5280 feet.
That same 12-pound Superior that flew very well and had lots of "get up and go" in Kansas City, would barely get airborne in New Mexico. I put a Supertiger 75 in place of the HP61, and got some, but not all, of the performance back.
My current flying site is about 850 feet above sea level and the Caliber 5 handles very well here.
-----
* Making the World a Better Place -- One Helicopter at a time! *
Dave |
Caliber 1800 RPM max, Raptor nearly 2,000 and still keep more power. My next move are going to change the hyper for a more powerful engine like the new redline .53, or make mods for a big block conversion but I donīt think the Caliber will support the power or dimmensions of an OS .70.
