The International Cessna 170 Association

http://www.modelyachtfittings.com/

Deck Eyes with #4/40 thread. Might not be big enough.

Aryana...don't forget.... the gross wt. cannot exceed 2200 lbs.

gahorn wrote:Aryana...don't forget.... the gross wt. cannot exceed 2200 lbs.

Actually...it can't exceed 550 pounds by scale.

Technically, it can't exceed 55 pounds (according to AMA regulations, larger aircraft must be inspected and issued a waiver), but I don't think this airplane will be much over 22 pounds.

If necessary you can always get an STC to increase the gross weight Those mininiture characters may be too big or heavy for your project. I didn't know such was available. Seems there are no limits to what can be purchased these days. Looking forward to continued progress photos, etc.

Ryan Smith wrote:

gahorn wrote:Aryana...don't forget.... the gross wt. cannot exceed 2200 lbs.

Actually...it can't exceed 550 pounds by scale. ...

Actually, a perfect scale 170 at gross weight would be 43.3lb. (cube of 27%)

cessna170bdriver wrote:

Ryan Smith wrote:

gahorn wrote:Aryana...don't forget.... the gross wt. cannot exceed 2200 lbs.

Actually...it can't exceed 550 pounds by scale. ...

Actually, a perfect scale 170 at gross weight would be 43.3lb. (cube of 27%)

Dammit Miles! I should have known better than to not do a cubic scale.

No tiny brass tubing to braze into seat frames?

That cub is something else! I never really enjoyed building out of balsa but I could get into making that fuselage!
But, at that point why not just weld up a Sonerai fuselage? It' s probably not that much bigger.

Aryana, are you planning to install one of those "free" Cessna seat stops on your pilot seat We have to keep coming up with things for you to do

Aryana wrote:Explain this cubic scale theory to me! I've always known that you don't just scale it down proportionately and 43 lbs makes a lot more sense to me. The same thing happens with wing area, right? 1/4 scale wing area is way less than just 25% of the full scale number. ...

27% length times 27% width times 27% height = 1.97% volume = 1.97% weight

For wing area, 27% span times 27% chord = 7.29% area. This is part of "economy of scale"; wing loading is only 27% of full scale.

So.... will Barbi and Ken fit inside...???

I think we better find Arayna a follow up project so when this one is complete he will have something to do. Otherwise, with all that spare time, his wife may run him out of the house or worse still find a bunch of honey do's

With those rare-earth magnets, aren't you concerned about how to swing the whiskey compass?

I can't remember, are you going to have seat & shoulder belts? You may have done so, but it would have been cool to have done a video on all these steps you have taken. You might market same to the kit mfg or others. Could do so even with the photos. I am sure there are lots of folks outside of our assn that would be interested in seeing what you have accomplished.

Aryana, your links were interesting. A whole industry out there.

170C wrote:Aryana, your links were interesting. A whole industry out there.

Yes. A "big" industry indeed. I'm considering working a deal with the city to lease land and build a hangar so I can offer structural repair services for these aircraft. I'm trying to convince them that everything should be 27% of the regular cost per sq ft. I think that is as likely to happen as me talking the guys in to working at 27% regular wages.