[NSRCA-discussion] Integral Landing gear

[Bob Kane]

I followed your instructions, but pushed the angle plate into the cabosil and let it cure before I read the part about the wax paper.  How much tail weight will I need to balance the angle plate?







Disclaimer:  This is intended as a humorous reply only. No actual angle plates or Integral Fuselages were harmed.


Bob Kane
getterflash at yahoo.com


--- On Fri, 2/26/10, Verne Koester <verne at twmi.rr.com> wrote:

> From: Verne Koester <verne at twmi.rr.com>
> Subject: Re: [NSRCA-discussion] Integral Landing gear
> To: "'General pattern discussion'" <nsrca-discussion at lists.nsrca.org>
> Date: Friday, February 26, 2010, 1:21 PM
> 
> 
> 
>  
>  
> 
> 
> 
> 
> 
> 
>  
> 
> 
> 
> I added 1/32” to the face of
> the nose ring on the fuse on the
> left side which increased the angle by 1/32”. If you do
> the math, it equates to
> adding about .5 degrees of right thrust. The way I did it
> was to block the fuse
> up on my table at .5 degrees positive as compared to the
> stab which I used as
> my 0 reference line. Then I glued a little bitty square of
> 1/32” balsa to the
> left side of the nose ring on the face near the outer edge.
> Then I applied a
> very thick, pasty mixture of cabosil and resin to the
> entire face of the nose
> ring and pushed a large, steel angle plate up against it. I
> wiped off the
> excess, and let it cure, using wax paper as a release film
> between the angle
> plate and resin. Since the fuse was sitting at .5 positive
> and the angle plate
> was 90 degrees to the table, the end result was that my
> nose ring now has .5
> down thrust when the fuse is sitting at 0. The little
> square of 1/32 balsa
> canted the angle plate .5 degrees to the right. This all
> sounds very heavy, but
> the weight gain was actually about 4 grams. You may need to
> think about this
> for a second, but if your down thrust is at 0 when the fuse
> is at .5 positive,
> then the down thrust will be at -.5 when the fuse is at
> 0. 
> 
>    
> 
> Verne 
> 
>    
> 
> 
> 
> 
> 
> From:
> nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On
> Behalf Of Vicente
> "Vince" Bortone
> 
> Sent: Friday, February 26, 2010 9:30 AM
> 
> To: General pattern discussion
> 
> Subject: Re: [NSRCA-discussion] Integral Landing
> gear 
> 
> 
> 
> 
> 
>    
> 
> 
> 
> Verne, 
> 
>   
> 
> Just
> curiosity.  When you said "add 1/32 right
> thrust", means to add
> to the one is already set at the nose ring? 
> Is 1/32" is at the
> tip of the prop? 
> 
>   
> 
> Thanks,
> 
> 
> 
> Vicente "Vince" Bortone
> 
> 
> 
> ----- Original Message -----
> 
> From: "Verne Koester" <verne at twmi.rr.com>
> 
> To: "General pattern discussion"
> <nsrca-discussion at lists.nsrca.org>
> 
> Sent: Friday, February 26, 2010 12:28:31 AM GMT -06:00
> US/Canada Central
> 
> Subject: Re: [NSRCA-discussion] Integral Landing gear
> 
> 
> 
> John,
> 
> With the stab at 0, make the wing .5 positive, reduce the
> down thrust to .5
> 
> down, and ADD 1/32 right thrust. I'm currently
> finishing my third one and
> 
> got it right on the second one. Now I'm just
> duplicating it. Actually, the
> 
> first one flew great but needed some mixing. With the
> settings I just gave
> 
> you, it'll track straight forever on either knife edge
> with no mix. The
> 
> extra right thrust was to eliminate a slight left drift at
> the top of tall
> 
> verticals. I left the stab at the factory position and
> called that 0. Your
> 
> wing will actually be slightly negative to that so
> you'll need to increase
> 
> the incidence to .5. The nose ring has a little over 2
> degrees down so
> 
> you'll need to remove 1.5 degrees from that. Can't
> help on the gear, I used
> 
> Bolly F3A Longs. BTW, set the CG at the LE of the wing tube
> or just a little
> 
> rearward of that, like 1/8" or so. Hope this helps.
> 
> 
> 
> Verne Koester
> 
> 
> 
> -----Original Message-----
> 
> From: nsrca-discussion-bounces at lists.nsrca.org
> 
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf
> Of John Gayer
> 
> Sent: Friday, February 26, 2010 12:39 AM
> 
> To: NSRCA Mailing List
> 
> Subject: [NSRCA-discussion] Integral Landing gear
> 
> 
> 
> 
> 
> The landing gear legs I received with my Integral weigh 6
> ounces and are 
> 
> very rigid as well. I noticed that when Jason listed the
> weights of the 
> 
> components on RC Universe that the gear legs were listed at
> 3.2 ounces 
> 
> which is a substantial difference.
> 
> This will be powered by a YS 170. I haven't checked yet
> but I intend to 
> 
> add adjusters if necessary to achieve stab incidence of 0.0
> degrees and 
> 
> a wing incidence of +0.5 degrees.
> 
> 
> 
>  I have three questions that I would like to resolve
> before I get any 
> 
> further along.
> 
> 
> 
> 1. Is there a replacement gear that is lighter and in
> particular more 
> 
> flexible?  Height of the gear should be about 8
> inches.
> 
> 2. Should the downthrust be reduced from the approximately
> 2 degrees 
> 
> built into the nose ring to about 0.5 degrees down or ?
> 
> 3. Should the sidethrust be reduced?
> 
> 
> 
> Would appreciate help from those of you who have already
> run into these 
> 
> problems and found solutions that are working for you.
> 
> 
> 
> Thanks
> 
> 
> 
> 
> 
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