[NSRCA-discussion] Integral Landing gear

[John Gayer]

Thanks everyone and particularly Verne who not only answered all the 
questions but described how to make the changes. Great stuff. Believe 
I'm all set to complete the Integral now.
John

Verne Koester wrote:
>
> 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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