ReVlution kit by Mike Delponte  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> Q-500 Racing >> ReVlution kit by Mike Delponte
Page: [1]

Login
Message << Older Topic   Newer Topic >>
ReVlution kit by Mike Delponte - 1/27/2008 6:41:50 PM   
vworley


 

Posts: 8
Joined: 7/8/2007
From: , TN, USA
Status: offline 		Guys,
I've pulled a kit I've had sitting for years and decided to put it together. The ReVlution Q500. I'm not sure what the kit came with, but I've basically had to work from the plans, a fuse and wing. I've already got the tail section worked out, but am stumped on the ailerons. Here's the question.
It looks to me like the plans call for the wing servo to be mounted in such a way that differential will be introduced between the L and R aileron. I've studied the plans and am now wondering if thats just OK, as the plane only turns one way anyway. Am I on the right track? If this is the case, then which aileron linkage is on top and which is on bottom?

vworley
       Post #: 1

RE: ReVlution kit by Mike Delponte - 1/27/2008 8:30:55 PM   
JAllen


 

Posts: 17
Joined: 5/28/2002
From: Mesa, AZ, USA
Status: offline 		You are right. Back when Mike DelPonte was producing those kits, we didn't know any better. Some of us have figured out that you need to offset both of the pushrods forward one hole in the servo arm to offset the differential created by the connectors on the torque rods or go to a connector for the torque rod that has the hinge pin in the center of the hinge point. The Great Planes Swivel Clevis PN GPMQ3860 will accomplish this as well.

Bottom line...you need as close to equal throw up and down on the ailerons as possible, however you get there.

Jim Allen

(in reply to vworley)
       Post #: 2

RE: ReVlution kit by Mike Delponte - 1/27/2008 8:37:58 PM   
garys


 

Posts: 740
Joined: 1/31/2002
From: San Diego, CA, USA
Status: offline 		It wasn't done for differential, it was done for strength. When I used to mount my servos on the side, I used to work on the geometry and linkages to get equal throws.

The way shown on the plans was done because people were afraid that cutting into the wing skin would cause a failure. In reality, after glassing the center section, ect, the chance of the servo opening causing a failure is minimal, as most failures are due to the top skin having a compression failure. Most people eventually went away from the aileron servo mounting that the Revlution showed in favor of the more traditional approach, with the servo upright, sticking out of the wing.

You should be able to see where Mike put the carbon or kevlar reinforcment in the wing if you look at the wingtips. Just cut the servo opening out behind the reinforcment and you should be fine. Make the opening just big enough for the servo, and use a 1/8" ply plate servo tray glued to the wing skin.

I don't know what engine you plan on running, but you definately won't have any issues if you're using anything less than a Nelson/Jett/Profi, even if you were to slip and cut through the aft reinforcement.

I typically set my Q500 ailerons up with a little differential between up and down movement, but equal throw left to right (about 1/4" up and 3/16" down per aileron).

_____________________________

GS

(in reply to vworley)
       Post #: 3

RE: ReVlution kit by Mike Delponte - 1/28/2008 2:38:16 PM   
vworley


 

Posts: 8
Joined: 7/8/2007
From: , TN, USA
Status: offline 		Allright, it sounds like my suspicions were correct. Differential is not desired. I knew this was the case, but did not know if there was supposed to be an exception here...
I've also noticed he's showing full size servos on the plans. I remember that the mini's were just not where they are today, back in 1991.
Looks like I'll cut a hole in the wing.
I'm going to put a Nelson on it. Nice and loud!

Thanks for the 2nd and 3rd opinion on this.

Another question. How are the ailerons / wing center section linkages typically installed. The wing has already got the trailing edge glued on... I guess cut it off, route it out glue it back on and then glass the center of the wing. Sound right?

(in reply to garys)
       Post #: 4

RE: ReVlution kit by Mike Delponte - 1/28/2008 3:23:42 PM   
daven



Posts: 6764
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		You have it right. Just remember its a high wing route out the bottom and use standard torque rods. I used heavy duty torque rods when doing this for Nelson use.

As to differential, many people do use it on racing planes. We set it up mechanically, allowing the servo to give more up deflection than down. Here is a picture of how its done. See where the Z-bends enter the servo wheel in front of center.

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to vworley)
       Post #: 5

RE: ReVlution kit by Mike Delponte - 1/29/2008 2:41:55 AM   
vworley


 

Posts: 8
Joined: 7/8/2007
From: , TN, USA
Status: offline 		Dave, the picture helped alot. I know just what to do now. 4-40 is definitely the way to go here as well. Not interested in flutter or failure if I can avoid it. I see the differential you've got there. I should be able to set that up.
Thanks for the help,
Victor

(in reply to daven)
       Post #: 6

RE: ReVlution kit by Mike Delponte - 1/29/2008 5:03:51 AM   
daven



Posts: 6764
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		4/40 at a minimum. Most of the Aileron rods I use are closer to 1/8".

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to vworley)
       Post #: 7

RE: ReVlution kit by Mike Delponte - 1/29/2008 12:07:34 PM   
LS171Malibu


 

Posts: 316
Joined: 4/17/2003
From: FORT WORTH, TX, USA
Status: offline 		Dave, what cleveses are you using?

_____________________________

Blake

(in reply to daven)
       Post #: 8

RE: ReVlution kit by Mike Delponte - 1/29/2008 12:51:42 PM   
daven



Posts: 6764
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		Same ones in the picture. They are made by hayes, they are a hard black plastic with metal pin.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to LS171Malibu)
       Post #: 9

RE: ReVlution kit by Mike Delponte - 1/29/2008 12:53:05 PM   
daven



Posts: 6764
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		The offset on the servo wheel set up like this is for high wing planes with the servo on the bottom of the wing. If you were doing a low wing plane, with the servo on the top of the wing it would be reversed.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to daven)
       Post #: 10

RE: ReVlution kit by Mike Delponte - 2/4/2008 2:39:45 PM   
vworley


 

Posts: 8
Joined: 7/8/2007
From: , TN, USA
Status: offline 		I got all the surfaces shaped, linkage and hinges installed. Thanks for the help w/ questions guys.
Now I'm looking at the finish. What is the best route here? Monokote or glass? I've got a vacuum bag setup, and was looking at doing the whole wing, but may only do the center section. Have not used one before and wondering what to do w/ the aileron rods sticking up, when bagging.

Also, I've got a Nelson engine I was thinking of putting on this plane, but I believe it was made for QM. It has no mixture control, just an open venturi. Was this engine timed differently than the Q500 models, or would it work fine?

Cheers,
Victor

(in reply to daven)
       Post #: 11

RE: ReVlution kit by Mike Delponte - 2/4/2008 3:53:13 PM   
daven



Posts: 6764
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		Not sure how you would bag the wing with the torque rods, but you can fiberglass without bagging. For all out racing, I prefer fiberglass and paint, but for a fast sport plane, Monocote/Ultracoat works just fine.

Q40 motors are timed differently than Q500 motors. They are designed to run in the 24-25k range with a 7.8" prop, where as the Q500 motor is designed to run arount 19-20k with an 8.8" prop. If it has a venturi, it is most likely a q40 motor, it doesn't by chance have rear exhaust does it?? If you wanted to use it on a quickie and go 160 mph+, you could give Dave S a call at www.pspec.com or send him the motor to rebuild it for your application. Probably cost $150-200, but you would have a practically new motor if its not in too bad of shape.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to vworley)
       Post #: 12

Page:   [1]
All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> Q-500 Racing >> ReVlution kit by Mike Delponte
Page: [1]





Jump to: