Weight savings help!!

[Rcmaster199 at aol.com]

I thought Icheol said the fuse weighed 2870 grams, RTF. That's not 10 pounds.

It's more like 6 lbs 5 ozs. The powerplant weighs around 40% that weight, (YS 
120 and its exhaust
). Another 3 ozs for the mount and he has 45% of the weight, tied up in the 
powerplant alone.

Icheol, How much does this beastie weigh RTF anyway? From the individual 
weights you indicated it should be a little under 9 pounds. Not too bad for 
an 840 sq in wing. Lighter would fly better, But, have you flown it already 
at this weight and you don't like it? Wassup?

Matt Kebabjian


> Subj:Re: Weight savings help!! 
> Date:2/19/2003 6:22:43 AM Eastern Standard Time
> From:<A HREF="mailto:amad2terry at juno.com">amad2terry at juno.com</A>
> Reply-to:<A HREF="mailto:discussion at nsrca.org">discussion at nsrca.org</A>
> To:<A HREF="mailto:discussion at nsrca.org">discussion at nsrca.org</A>
> CC:<A HREF="mailto:discussion at nsrca.org">discussion at nsrca.org</A>
> Sent from the Internet 
> 
> 
> 
> The problem is in the fuze! At nearly 10 pounds! In the wing you will be
> hard pressed to save more than 2 or 3 ounces. My last 2 retract ships
> were in that ball park for size and the weight was very close to the 2#
> 8oz you have. but the fuzelages were under 7#. You are ot going to save
> 3# by repainting, unless you used a lead based paint and put it on 1/4
> inch thick!
> 
> I think you are stuck, and the only way out is to build a new fuze.
> Changing spinners will save you about 3/4 of an ounce!
> 
> Terry T
> 
> On Tue, 18 Feb 2003 03:32:32 -0800 "Ihncheol Park" <PatternFlyer at msn.com>
> writes:
> > Hi, All,
> > 
> > I am in the process of trying to reduce weight of my plane 
> > including
> > building a new wing with foam core, replacing servos with less 
> > weight,
> > smaller battery etc.
> > 
> > How much can a wing weigh if it is 837 sq-in 67.7" (68") dual servos 
> > and
> > glassed in the center sections top & bottom?
> > 
> > My wing right now weighs 1160g (40oz) with 136G, Supra 60 size 
> > retracts, 2x
> > 55mm Tettra wheels, Central hobbies axles, 2x 7005 servos with 
> > central
> > hobbies pushrod, MK horns, and adjusters. Kinda too heavy?
> > 
> > My fuse weighs 2870g RTF.  Really heavy for 68". I am not sure how 
> > much I
> > can save from repainting the fuse because I have no data on the 
> > weight
> > before priming and/or painting.
> > 
> > Does anyone know the weight of 2.5" FAI 120-cut, Lightened back 
> > plate TT
> > spinner weight without the screw?
> > 
> > I use 2.5" standard 120-cut that weighs 56g w/ screw, 51.03g 
> > wo/screw.
> > How much can I save?
> > 
> > My battery is Nicad 1700mAh w/ JR connector 140g.
> > This runs 1x 8411, 2x 7005, 1x Hitec 225, 1x 8231, 1x Futaba 136G
> > 
> > What other type of battery in smaller or lighter weight can I go 
> > with?
> > I use Alpha 4 as primary charger.
> > Thanks,

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