I see. It is the trimming part. I guess when we tested it, it appeared to be trimmed
neutral, but it is a big plane, so may have appeared okay. If it wasn't, and had a
bit of down trim, then it would have appeared to need more weight.
Lincoln Ross wrote:
> This is very unlikely. Either you misinterpreted the test, or there is
> something weird (read: elastic) about your plane, or you conducted the
> test improperly.
>
> If the nose pulls up fast when diving after trimming for a reasonable
> speed, you need LESS noseweight and then retrim. If it doesn't pull up,
> you need MORE noseweight and a retrim. At least to get to a reasonable
> point, and then it's to taste.
>
> Too much weight in the nose will NOT make the dive test give the wrong
> results, as long as you trim to a reasonable speed first.
>
> Tom Broeski wrote:
> > I learned one major thing from the dive test..... You can have too much weight and
>get the same
> > indication that having too little shows.
> >
> > With Gordy's help, we did a dive test on my Stork. I had a considerable amount of
>nose weight
> > to start with. We did a few dive tests and the indication was to add more weight,
>which really
> > put the cg forward. I tried flying the plane at the Nats and it would not thermal
>at all. I
> > could turn and turn and turn and it was a real dog. I got home, and decided to
>just take out a
> > bunch of weight to see what would happen. It flew much better and the cg was much
>closer to
> > spec. Then with some trimming, I took out more weight until the plane was pretty
>squirly. A
> > bit of adjustment on the tow hook and a bit of weight back in and now it is a
>happy plane. So
> > too much weight can also make the plane appear to need more. It also flies
>inverted very well
> > now.
> >
> > Tom
>
> --
> Lincoln Ross
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