Rudder from a different Mudder

[Brad[_2_]]

I finally finished the rudder for the HP-24 today. It weighs without
mass balance 5 pounds. Wondering if any folks out there know what
there rudder might weigh, with or without mass balance. I am curious
where on the curve I am with the one I designed and built. I should
say, this has an antenna inside and a lot of paint on it.

I painted it with Prestec. After a few less than satisfactory spray
results with a lacquer gun I went out and bought an HVLP conversion
gun. Maybe because it is a really cheap gun, but the thing sucks. So I
called Simtec, the makers of Prestec for some advice. I set the HVLP
gun up as recommended, did a few test sprays on some cardboard, and
immediately knew this was not going to work...............so I poured
the paint into the lacquer gun, bumped the PSI to 45, opened up the
flow rate and got the results I was after. The first cut was easily
done with 600 grit wet, tomorrow I pick up a sleeve of 800, then on to
1000-1200-1500-2000 and the buff and cut process.

So far am pretty happy, may have to fix a few pin holes, but we'll
see.

Cheers,
Brad

[[email protected]]

On Aug 13, 9:17*pm, Brad > wrote:
> I finally finished the rudder for the HP-24 today. It weighs without
> mass balance 5 pounds. Wondering if any folks out there know what
> there rudder might weigh, with or without mass balance. I am curious
> where on the curve I am with the one I designed and built. I should
> say, this has an antenna inside and a lot of paint on it.
>
> I painted it with Prestec. After a few less than satisfactory spray
> results with a lacquer gun I went out and bought an HVLP conversion
> gun. Maybe because it is a really cheap gun, but the thing sucks. So I
> called Simtec, the makers of Prestec for some advice. I set the HVLP
> gun up as recommended, did a few test sprays on some cardboard, and
> immediately knew this was not going to work...............so I poured
> the paint into the lacquer gun, bumped the PSI to 45, opened up the
> flow rate and got the results I was after. The first cut was easily
> done with 600 grit wet, tomorrow I pick up a sleeve of 800, then on to
> 1000-1200-1500-2000 and the buff and cut process.
>
> So far am pretty happy, may have to fix a few pin holes, but we'll
> see.
>
> Cheers,
> Brad

From ASW-27 Manual- rudder about the same size.
Mass- 3.4- 4.2 kg.
Permissible moment 1.94-2.34 kgcm.
Don't worry about gelcoat not looking nice. It almost never does. It
ain't paint!
Fun watching you guys do your thing.
Good Luck
UH

[Bob Kuykendall]

On Aug 13, 7:04*pm, wrote:

> From ASW-27 Manual- rudder about the same size.
> Mass- 3.4- 4.2 kg.
> Permissible moment *1.94-2.34 kgcm.

Thanks for that data, it is very helpful!

Bob K.