Today's Message Index:
----------------------
1. 07:51 AM - Re: tools (sonex293)
2. 08:08 AM - Re: [esqualtalk] Gap Seals (N1BZRich@AOL.COM)
3. 08:18 AM - Re: tools (Pete)
4. 06:43 PM - Re: [esqualtalk] Re: Pilot Report - Lightning (Laurie Hoffman)
Message 1
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--> Lightning-List message posted by: "sonex293" <sonex293@nc.rr.com>
RotoZip, a rotary cutting tool...
http://www.rotozip.com/
Permagrit, permanent Tungsten carbide Grit Sandpaper....
http://www.wicksaircraft.com/catalog/product_cat.php/subid=5552/index.html
http://www.permagrit.com/system/index.html
--
Michael
lightningaustralia(at)big wrote:
> Tex, Can you tell me ,what is a Roto- Zip also a Permagrit file, may be it is
called something different over here.
>
> Dennis Borchardt Lightning Aircraft Australia.
> [i]----
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=52056#52056
Message 2
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| Subject: | Re: [esqualtalk] Gap Seals |
Malcolm,
Good to hear from you. I look forward to seeing the pictures when you
post them. Which Esqual wing have you done the oil flow experiments on - the
earlier one or the later one (longer span, turned up tips and different
airfoil)? Also, did you see any difference with flaps up or down? My newer wing
Esqual has a rather large gap on the underside of the wing when the flaps are
up that I want to use the mylar seals there to try to keep smooth airflow
and to prevent air going up through the gap to the top surface which I would
think would cause some turbulence at that point. I have had that type of gap
seals on several General Aviation aircraft and they seemed to help cruise
speed. That's what I am looking for.
Your comment about the curved airflow matching the fuselage profile is
one of the reasons the Lightning fuselage shape was changed. The area where
the fuselage narrows is farther aft on the Lightning to prevent the curved
airflow while still over the wing area.
I was thinking about using the turbulator tape instead of VGs in some of
the same areas where you mentioned using VGs - on the fin to get more rudder
effectiveness. Might even try some turbulator tape to help aileron
effectiveness on the Esqual's wing. I found the wings and wheels web site last
evening and it looks like they have everything I need.
Message 3
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Tex,
Permagrit cutting and grinding wheels on an airpowered die grinder work well
also. We've had continual problems with the rotozips not holding up well to
the dust created by fiberglass sanding and cutting.
Pete
_____
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of Tex Mantell
Sent: Wednesday, August 02, 2006 8:14 PM
Those getting a lighting kit should purchase a "Roto-Zip" and get the set of
files from "Permagrit" . They really work the fiberglass well. TEX
Message 4
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| Subject: | Re: Pilot Report - Lightning |
--> Lightning-List message posted by: Laurie Hoffman <lozhoffman@yahoo.com>
Buz
No worries...I already had the calculator out before I
got to your P.S.
Laurie
--- N1BZRich@aol.com wrote:
>
> In a message dated 8/3/2006 12:32:04 A.M. Eastern
> Daylight Time,
> corky@hbci.com writes:
>
> Keep in mind, the flap gap cover is installed under
> the upper side to make
> the flap fit tight when up. If yours is like mine,
> you won't need that.
>
>
> Hi Dave,
> Sorry I missed you at OSH. I found your card
> so knew you had been by.
> I am not sure what you are saying about your
> aircraft not needing a flap gap
> cover. The underside of my wing had a relatively
> large gap between the wing
> trailing edge and the flap when they are up. That
> is where I think I can
> lower some of the parasite drag. The top side of
> the wing has a nice tight fit
> when the flaps are up. The other underside of the
> wing change I have planned
> is to streamline around the fuel drains. May try
> some type of aileron gap
> seal if the flap gaps help. I really don't see the
> need for rudder and
> elevator gap seals as my airplane is relatively
> tight in those areas - no gaps to
> speak of.
> Just tonight I found what I am looking for to do
> the flap gaps - mylar
> from a sailplane supply house. Tomorrow after
> taking some measurements I will
> order some for my airplane and the prototype. Nick
> and I will post the
> results here when the additional testing is done on
> each aircraft.
> My antennas are already inside the fuselage.
> Also, I have the Lightning
> cowling so that is good for some drag reduction
> already. The other big drag
> reduction effort of 31BZ was the fitting of Van's
> gear leg fairings and
> their latest style wheel pants. Both of those
> changes together were good for
> something over 20 mph and probably close to 200
> rpm.
> I measure my prop pitch at 12 inches in from
> each tip and currently have
> 23 degrees set. I think that is about the
> equilivant of 54 inches of pitch.
> I say that because I measured a fixed ptich 54
> inch prop and it read 23
> degrees. I know that is not exact science, but it
> is a starting point. I don't
> use the hub indicator at all and have no idea what
> it reads.
> You didn't say at what speeds you were climbing
> to get the 2750 on climb
> out. Initially on TO roll, I only get about 2650 to
> 2700 and then after
> lift off I accelerate to 85 and climb at that until
> the end of the runway. At
> that point I lower the nose slightly and climb at
> 100. I am seeing the 2750
> during climb out at 100. OATs recently have been
> 100, but the only thing
> that seems to effect is rate of climb (down to 1200
> or so fpm) - speeds and rpm
> are pretty much the same.
> At 5000' in level flight I can turn up about
> 3250 but it takes a while
> to get there. At 2850 I can get 138 indicated up to
> as high as 6000'. Best I
> can remember I have a 250 jet. Run your finger
> around the inside of your
> exhaust. If you get black you are too rich. At
> full power at altitude what
> happens if you pull the carb heat on? That can
> also be an indicator that you
> might be too rich. All I can suggest now is to
> reduce your cowling drag (the
> Esqual stock cowl is much draggier than the
> Lightning), add the gear leg
> fairings and low drag wheel pants.
> Blue Skies,
> Buz
>
> PS: Sorry Laurie, all about speeds are MPH> Did
> not have time to convert.
>
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