RE: Twisting APC props
I hate to burst your bubble Jr., but we have NEVER made or sold a TT Pro .40 piston/cylinder assembly. HN made some for the TT 36 for control line stunt, but that's a different animal. Where do you guys come up with this BS? Do you just do it to stir the pot?
Posted on: 3/18/2009 11:34 PM by Author "Dave Shadel" in the forum "General Racing Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=8592891

OS Hanno and 61 RF/SF piston/cylinders
and full time hot rod building is in the near future, I'm happy to report. Thanks, Dave
Posted on: 12/1/2007 2:32 PM by Author "Dave Shadel" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=6699941

RE: NEW NELSON Q-40
By the way, making a blanket statement about all the engines needing to be shimmed up is an error. It depends on many factors, and you cannot find out until you have run the engine and made the determination as to whether or not it needs to be changed. Every engine is a bit different.
Posted on: 2/19/2007 8:32 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5443971

RE: NEW NELSON Q-40
Shims provided with new engines.
Posted on: 2/19/2007 8:01 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5443767

RE: NEW NELSON Q-40
Barry, I'm not sure what the sweet spot is, but I'm sure we will see it this weekend. I would run the biggest prop the engine is happy with and go from there. If I can run an 8 pitch prop at PHX, I will be, but testing thus far suggests that it will slow them down.
Posted on: 2/19/2007 1:12 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5441648

RE: NEW NELSON Q-40
What do you mean limit? RPM? I've run the current ones at over 30K with no problems. I certainly wouldn't be comfortable with wood at that speed.
Posted on: 2/19/2007 11:08 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5441046

RE: NEW NELSON Q-40
They won't........safely.
Posted on: 2/19/2007 9:53 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5440763

RE: NEW NELSON Q-40
Barry, put an .003" shim under the head. The engine is over compressed and you'll burn it up if you continue running it this way.
Posted on: 2/19/2007 12:34 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5439650

RE: NEW NELSON Q-40
Not an ignorant question, Stan, but these new engines are not the same configuration as the engines run in F3D. They are side exhaust, not rear, and don't run with full wave pipes like F3D. Henry Nelson has built a number of rear exhaust long strokes for F3D, and they compare favorably with anything currently being run, but Henry doesn't do this business for his health, and the market for F3D engines is considerably smaller than that for Q500/Q40, so he concentrates on what makes more $. F3D is the bastard child of racing in the USA. We don't race it as a normal event and never will as long as more easily competed venues are available to us. My prediction is that the bulk of the world's racing will soon be Q40 due to the price of admission and the complexity of aircraft being lower. In other words, more bang for the buck. Believe me when I tell you that there are lots of guys worldwide that feel the same way. DS
Posted on: 2/18/2007 12:33 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5436565

RE: NEW NELSON Q-40
To quote the great race car driver A.J. Foyt: "winning isn't everything, it's the ONLY thing"
Posted on: 2/16/2007 4:09 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5428450

RE: NEW NELSON Q-40
Don't you guys know that the course has been shortened? We now fly with the honor(?) system. If you say you didn't cut then that's good enough for us!
Posted on: 2/16/2007 12:56 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5427688

RE: NEW NELSON Q-40
No declaration necessary for new engines or modification to existing engines (and there have been many over the last twelve years, some increased power, some for longevity). If this were the case, we would have reams of paper on every little machining change we've done to the engines. Want an engine? I have plenty. Want a new prop? I have those, too. Dave Shadel
Posted on: 2/16/2007 10:30 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5427092

RE: NEW NELSON Q-40
Same mounting
Posted on: 2/15/2007 1:06 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5422901

RE: NEW NELSON Q-40
at PHX. The old engines are not convertible to the new specs. Dave
Posted on: 2/15/2007 11:16 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5422481

RE: NEW NELSON Q-40
Kurt, Sorry to hear you are throwing in the towel. It's always been a pleasure hearing from you. Best of luck in whatever you do. Dave
Posted on: 2/15/2007 10:06 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5422220

RE: NEW NELSON Q-40
Hey Kurt, How's the RE biz?
Posted on: 2/14/2007 8:07 PM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5420012

RE: NEW NELSON Q-40
or Credit cards OK, but only if I know you well. See you in Phoenix. Dave
Posted on: 2/14/2007 11:09 AM by Author "Dave Shadel" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=5417721

RE: Getting Confused here
Sorry Wm., I neglected to provide the new YS website address when I answered your E-mail. It is www.yspartsandservice.com The importation and service of YS engines and parts will be taken over in the near future by Mr. Richard Verano, a partner in the operation since 2000. You can direct your future questions to him at ysperf@charter.net Thanks, Dave
Posted on: 2/9/2007 9:46 PM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5396015

RE: Ballistic Pattern ABC Engine Liners
We have started chroming liners as of yesterday. I will start shipping these out in about 10 days. Thanks, Dave
Posted on: 2/8/2007 10:17 AM by Author "Dave Shadel" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=5388525

RE: Ballistic Pattern ABC Engine Liners
Once again, we are not making these for FSR's. Only for RF, SF, and Hanno Special. At present we are porting the liners. Most of the parts have been sold. If you want to be on the list for any, contact me at xxxperfspec@charter.netxxx Drop the x's Thanks, Dave
Posted on: 2/2/2007 11:47 AM by Author "Dave Shadel" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=5360592

RE: Dave Shadel no longer answering ? on this forum.
^
Posted on: 2/1/2007 10:11 AM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5355214

RE: Dave Shadel no longer answering ? on this forum.
Thanks, Zeeb. Good Flying to you as well. D
Posted on: 1/31/2007 12:48 PM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5350982

Dave Shadel no longer answering ? on this forum.
To all my friends at RCU and elsewhere: Effective February 1, 2007, I will no longer be the manufacturers rep answering YS questions on RCU. I developed a couple of good friendships through my time here, and I will still be available at Performance Specialties if you want to contact me. My website is located at www.pspec.com I'll look forward to hearing from you. Good Flying, Dave
Posted on: 1/31/2007 11:31 AM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5350646

RE: YS 120 Problem
I still suspect that the NV assembly is worn out, or after your note maybe full of some junk. Pull the NV body and make sure it's clean. Also the passages in the throttle body where the barrel feeds the carb. Lots of little nooks and crannies in a YS fuel system to plug up!
Posted on: 1/30/2007 10:12 AM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5345230

RE: YS 120 Problem
Might be a worn out NV assembly. Does the NV body bottom out against the hex on the spray bar? If so that could be the problem.
Posted on: 1/29/2007 10:05 PM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5343494

RE: Info on break in...
Put it in the airplane and fly it.
Posted on: 1/29/2007 6:28 PM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5342294

RE: prop size
More diameter, less pitch-16x6,17x4. To reduce speed, always reduce pitch. At any given rpm, less pitch will produce less speed. Good Luck.
Posted on: 1/29/2007 10:12 AM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5340106

RE: Rebuild
The tank is obviously not pressuruzing until the engine begins to run. There has to be a leak somewhere in the system. Are you sure the regulator is assembled right?
Posted on: 1/29/2007 10:10 AM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5340098

RE: Rebuild
Is the check valve leaking?
Posted on: 1/28/2007 10:30 PM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5338455

RE: YS Decals
The foam cluck keeps you from sucking a bubble. If it sucks a bubble, the engine will quit. I agree that you cannot run the tank as far down. Plan on running a 20 to 24 oz tank so you have plenty.
Posted on: 1/28/2007 9:02 PM by Author "Dave Shadel" in the forum "YS Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=5337872