REFLECTOR: Aileron control stick pound pull

Sun Jan 4 22:17:37 CST 2009

I read through all the posts and haven't seen anyone mention what I found.

I just went through rudder and aileron trimming.  I am now happy with
the aileron forces.  I use rod ends that I'm not sure if they came with
the kit, or if I bought them myself.  The rod ends have to be lined up
so that the shoulder where the threaded portion is does not rub on the
bell crank.  Just loosen the rod end, and adjust it until the flat side
is parallel to the bell crank.  Easy enough to do.  I added a thin
washer under the ball just to make sure that there was a little extra
clearance from the rod end shoulder to the bell crank.

Do it one connection at a time, one side at a time.  Disconnect all
cable ends, and see that the stick moves freely.  Connect one cable to
the bell crank and play with it until its smooth, then do the other
cable.  Then attach one aileron, and repeat.

My money is on a badly aligned rod end.

Jeff Howell wrote:
> I just installed my cables and I have alot of friction as well. probably
> more than 2 pounds... My cables are also 90" long wich is considerably
> longer than the 54" useing currently. thanx Jeff 
> 
>> From: sbakr at comcast.net
>> To: reflector at tvbf.org
>> Date: Sat, 3 Jan 2009 08:05:11 -0500
>> Subject: Re: REFLECTOR: Aileron control stick pound pull
>>
>> Hello Andy,
>> Confirm the ailerons have freedom of movement with the cables
> disconnected.
>> Make sure the foam core does not interefer with the 6' long aileron
> torque
>> tube inside the wing.
>> The aileron push-pull cables will have more internal friction when
> they are
>> new. The tightness of the dust caps contributes to this. The friction
>> caused by the dust caps will become less over time. When routing the
>> push-pull cables, make as wide a bend as possible when turning the cables
>> from the whale tale through the firewall. Too tight of a radius will
> cause
>> internal friction.
>> Note that stick force feel is different in the air than on the ground.
>> Depending upon the tightness of the ailron trim spring, the ailerons can
>> feel somewhat stiff on the ground - but feel great during flight.
>> My advise not to worry about the 2# aileron stick force for now. Fly the
>> aircraft and fine tune your determinations. The aileron control motion of
>> the stick should be smooth - no binding action.
>> Happy New Year!
>> Scott B.
>>
>>
>> ----- Original Message -----
>> From: "Andrew Ellzey" <ajlz72756 at yahoo.com>
>> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>> Cc: <scottb at velocityaircraft.com>
>> Sent: Friday, January 02, 2009 5:22 PM
>> Subject: REFLECTOR: Aileron control stick pound pull
>>
>>
>> I just completed rigging my aileron's and would like to know what
> pound pull
>> should be expected on the control stick. Using a cheep fish scale for
> a pull
>> gage I am getting about a 2lb pull needed for the first 1 inch of aileron
>> travel and then a gradual increase to about 4lbs for full deflection.
> I have
>> an XLRG with the cut down keel mod so my bell cranks are rigged
> accordingly
>> (Velocity XL-5 Rigging). The 2lb pull is the best that I have been
> able to
>> achieve and haven't lubed anything yet. It seems to me that the push pull
>> cables should have been shorter to reduce the radius of the bend as it
>> travels through the gear bulkheads. My push pull cables are 60 inches
> long.
>> Was I supposed to receive shorter cables with the cut down keel mod? Is
>> there anyone on the reflector with the -5 option that hasn't installed
> their
>> push pull aileron cables that could measure their cables?
>>
>> The manual calls for white grease under the rubber cups, has anyone found
>> anything better? And yes, I reamed my rubber cups to reduce or completely
>> eliminate any drag from the rubber wipers of the cups. I know that
> some say
>> to completely remove the inboard cups, but if you do this the plastic
> guide
>> that is under the cups doesn't stay in place without the cups to hold
> them.
>>
>> I took the factory demo ride before I bought my kit in 2005, and I don't
>> remember the aileron pull to be this stiff. What I remember was a very
> light
>> touch needed to fly the factory XLRG.
>>
>> Andy Ellzey
>> XLRG
>>
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