Re: Canard mounting
Jon Finley <finley@...>
Thanks Paul. I haven't moved the CG way back and tried to pitch buck. May
try that soon. I really wonder if that t-tail is doing something to prevent
pitch buck!
Yes, the Soob is heavier than the VW but not by much. My Q didn't pitch
buck with the Revmaster either.
The best part of this characteristic is that I don't get bored with my
landings!! :-)
Anybody out there have the tools necessary to accurately measure the angle
between the wing and canard? If so, bring them to Ottawa!
Jon
toggle quoted message
Show quoted text
try that soon. I really wonder if that t-tail is doing something to prevent
pitch buck!
Yes, the Soob is heavier than the VW but not by much. My Q didn't pitch
buck with the Revmaster either.
The best part of this characteristic is that I don't get bored with my
landings!! :-)
Anybody out there have the tools necessary to accurately measure the angle
between the wing and canard? If so, bring them to Ottawa!
Jon
-----Original Message-----
From: Fisher Paul [mailto:FisherPaul@...]
Sent: Tuesday, August 08, 2000 9:49 AM
To: 'Q-LIST@...'
Subject: RE: [Q-LIST] RE: Canard mounting
Jon,
I think my canard is mounted slightly "down" as well (same
problem - I don't
have the tools to measure it accurately!). I have to keep the ailerons
reflexed up slightly to keep it straight and level. I've got ~815 hours
now, so I don't see the need to change the incidence of the canard at this
point. It does pitch buck - depending on the weight and reflexor setting,
but I suspect it is costing me some speed at the top end (especially at
lighter weights).
I don't know if the different airfoil on your canard might also change the
characteristics from Larry, Sam or myself. Certainly the T-tail and
reflexor will change things.
Is the Subaru heavier than the Revmaster? More weight on the
nose may have
just made a marginal problem much more noticeable.Paul A. FisherQ-200, N17PF-----Original Message-----dreaming up
From: Jon Finley [SMTP:finley@...]
Sent: Tuesday, August 08, 2000 07:54
To: Q-List
Subject: [Q-LIST] RE: Canard mounting
John,
Sounds like I better explain myself so I don't sound like I'msome hair brained idea!!down elevator.
My Q2 has over 400 hours. It flew almost all that time with a Revmaster.
Now
flying with the Subaru. It flies pretty well. However; it does not pitch
buck. Rather, it starts downhill (mushes) at 85mph and fullThe down elevator stop is greater than the plans (first thing I triedif I hope to
years
ago). I must be over the numbers at 90mph and a little powerland (otherwise there is no elevator authority). I have tufts on theduring climb.
elevator (canard) and they exhibit some interesting behaviorIf I use the elevator to pitch for climb the tufts start goingwild (sidetodetermine
side, up, and occasionally FORWARD) when deflected more than 1/4" - 3/8"
(haven't measured it exactly but it isn't much). To avoid this I have
started using my reflexor and t-tail to pitch for climb and keep the
elevator "in-trail". I don't have a VSI so I cannot accuratelyifmethods of pitch
there is any difference in rate of climb (between the twochange). I am currently flying at the forward end of the CGlimit but I amwithin the limits. My Q1 pitch bucks normally so I am familiarwith whatitdon't fix it.
feels like. This problem has never been a big deal but am becoming more
interested in at least knowing what the problem is even if Ichecked the
I made a set of "outside" airfoil templates using the core cutting
templates
(the BL 48.8 template for wing and BL50 for canard). I transferred the
water line from the template. My new templates match the airfoil pretty
well. I raised the tail until the main wing was level and thencanard, it was slightly nose down. I didn't measure how muchas I didn'thave a digital level and couldn't remember how without one (no need towould happen if
write
up instructions - I have them, just need to dig them out). The original
intent of my question was to find out if a Q2 would even fly with a nose
down canard and if so, would it behave like mine does. Sam, mentions
needing lots of nose up trim. I don't need much but I do have a t-tail
which
could be masking my problem.
Jon-----Original Message-----
From: jtenhave@... [mailto:jtenhave@...]
Sent: Monday, August 07, 2000 9:27 PM
To: 'QBA@...'
Subject: RE: Canard mounting
Point of clarification Jon, please. Are you asking whatthe AOA of the canard was reduced relative to the AOA of the
wing? If so,
by how much?
cheers
John
-----Original Message-----
From: Jon Finley [SMTP:finley@...]
Sent: Tuesday, August 08, 2000 12:05 PM
To: QBA (E-mail)
Subject: Canard mounting
Hi all,
A not so hypothetical question: How would a Q2 act in the air if
the canard
(WL) were mounted nose down relative to the wing (WL)?
Thanks,
Jon Finley
N54JF Quickie - Volkswagen 1835cc
N90MG Q2 - Subaru EA-81 DDT
Apple Valley, Minnesota
http://63.90.191.136/Finley/finley-subaru.html
To unsubscribe from this group, send an email to:
Q-LIST-unsubscribe@...
To unsubscribe from this group, send an email to:
Q-LIST-unsubscribe@...
Quickie Builders Association WEB site
http://web2.airmail.net/qba321tm/q-page1.html