AlphaWhisky

I have one of those old 72" span GP CAP 21 kits here that people have made disparaging remarks about over the ages - 'snap 21' etc.

It`s been gnawing away at me for a long time and I thought I might consider doing something with it over our next Southern Hemisphere winter. It occurred to me that if I ditched the existing wing and replaced it with a nicer looking basic elliptical one I might be able to call it a CAP 10......

Just for the record, are the scale afficionadoes out there able to provide a rundown of the basic differences between the CAP 10 and CAP 21. Where should I look for some decent 3 views of the CAP 10; are there any plans available for a model of this aircraft?

I might be completely wrong, but didn`t the old Emeraude have something to do with the pedigree of this line from way back?

Thanks,

Alan W

Mode One

At one time I did a Google search of Caps and found a website that had photos of most of them. From what I can recall the Cap 21, 232,and Chapman's 580 all look pretty much the same. The 10 I don't know enough about to comment. However, I'm going to Google Cap again to see what I can find out.

Mode One

Both the cap 10 and Cap 21 are shown in photos at this website:
<http://members.fortunecity.com/gvanroy1/aerobat.html>

It also mentions that the Piel Emerraude is an ansestor.

The Mudry website has more information in French:
<http://www.dossiers-aero.com/Mudry.htm>

This all took only 5:00 minutes using Google!

drifter

My Feedback: (53)

The plane that became the Cap-21 was the Cap-20, not the Cap-10. The "20" had an elliptical wing like the "10".
Here is a quote from Airliners.net:

"The CAP-10 remains in production today in 10B form with an enlarged tail. The CAP-20 meanwhile was a single seat development with a 150kW (200hp) AIO-360 engine.

The updated CAP-21 replaced the CAP-20 in 1981. The CAP-21 combined the fuselage of the CAP-20 with an all new wing and new undercarriage, and forms the basis for the similar CAP-231, CAP-231EX (with a carbon fibre wing) and latest CAP-232. "

drifter

My Feedback: (53)

here is a 3 view and pic of the Cap-20

Closterman

Look at www.mraerodesign.com They offer a Cap 10 kit !

AlphaWhisky

That`s a nice looking CAP 10 kit. However, I`m more interested in doing a bash job with my existing GP Kit - unless someone wants to relieve me of it for a vast sum........!

At least we have established that the CAP 21 is a development of the CAp 20, and not the CAP 10. I`ll keep doing some homework on this.

Thanks,

Alan W

ladihoe

My Feedback: (3)

I bought a cap 21 great planes at an auction and would like to know the cg. The plane i have balances at 5.5 inches and the only thing i can find out is it should be 4 3/8 inches. Can anyone tell me anything about this.

tailskid

My Feedback: (34)

Wasn't the French Connection aerobatic team flying the Cap 10's?

TexasAirBoss

My Feedback: (22)

Yep, husband and wife ! Killed one another. Here is an ARF Cap 10 that I have been considering...........Great vids on Utube

http://vqwarbirds.com/products/aircraft/cap.html

wascamp

My Feedback: (1)

It looks to me that you could mate the wing from a CAP 10 to the Cap 21 fuselage and call it a CAP 20. The Cap 20 wing looks to be that of the CAP 10. The tips are squared up, but I seem to have seen CAP 10's with the square tips. There are several plans for CAP 10's out there. I'm sure you will find what you are looking for. They might need to be scaled one way or another, but That should be easy. Remember that the Cap 10 was a 2 place aerobatic trainer rather than a full house competition ship.

LADDIE

Alen, here are differences between CAP10, 20, 21 and 231.
Laddie.

ladihoe

My Feedback: (3)

Good feed back but i really need to know the center of gravity for the cap 21. I was told to measure the wing and figure 33% of that for the cg. If so i think the cg is right .anymore thoughts. Thanks, tom

Richard39

My Feedback: (14)

I have a 40 size CAP 21 and I would like to know the C.G. also.... This airplane requires a lot of down elevator trim to fly straight... Almost lost it in the trees last week... I have put two washers behind the upper part of the motor mount bolts but have not flown it since... It now appears to have a slight down angle on the engine.... It is balanced at 4 inches C.G. but would like more info.... Thanks

ladihoe

My Feedback: (3)

Richard I think you are just about right with the 4 inches but use this site to calculate it for you self. I have tried this with planes i know the cg for and it works.
http://adamone.rchomepage.com/cg_calc.htm

deckerv

My Feedback: (21)

I have an old Cap 21, the 72" version. Although it is a tad snappy, it flys pretty nice overall.

ladihoe

My Feedback: (3)

What engine do you have on the cap 21

JorgeB

Hello People, i was builded RC Cap 10B from scrach, plans downloaded from Internet. It is a Classic siluet, and Cap 20 has a mix between Cap232 and cap 10b. I found a lot of picture of true Cap. I was use schema "French Connection AirShow" I love flight it
Regards! Jorge

My Blog http://rc-flying-models.blogspot.com
Plans
http://rc-flying-models.blogspot.com...-10b-i-de.html
http://rc-flying-models.blogspot.com...ap-10b-ii.html

Al Lewis

A good rule of thumb for setting a CG when it is unknown is 27% of the wing at the fuse. We have several good builders in our club and they all swear by this. If you have a plane you know the CG of you might try and calculate this and see how close it comes out.

matt13

I was search for posts on the Cap10 when I stumbled over this one. I was looking to see if any one has experience with an ARF of the Cap 10 that I saw in a mag advertisment that comes in both 60 & 120 size. The company is called VQ ? I have never heard of them before. The reason for the Cap 10? I use to fly them for a training college. One of the earlier posts was correct in saying that the Cap 10 was first a home built called the Emeraude which was designed to give the feel of flying a Spitfire hence the wing shape. It is now being built as the Cap 10C which has a redesigned wing as the B model wing was prone to failure. Matt

AlphaWhisky

I came across one of these larger VQ Cap 10 ARF`s in a model shop when in Aussie just a couple of weeks ago. I was able to open the box and have a good look at it. It seemed to me to be a pretty good quality model.

I worried over it for a few days and just a couple of days ago I suggested my friend over there should go and capture it on my behalf. I haven`t heard the outcome yet.....

It has the same colour scheme as the one per Closterman`s post earlier, I wonder what the connection is there, but the wingspan is a little smaller at 1970mm. Pity it doesn`t quite make the 2 metres span which is the requirement for IMAA here.....

Alan W

matt13

Let me know how you go, the colour is from the French connection formation aerobatic team which was a husban and wife team. They collided and were both killed a few years back, there is a good in cockpit video of one of their routines on you-tube, just do a search. I would be planning to re-cover it if I do that project, and paint it to represent one of the ones that I flew a couple of years ago. Matt

Articsquirrel

I have the same plane and need help
I just have receaved a already built one with no servos no power plant need all suggestion possable power plant sugestions, pics of your set up would be great.

AlphaWhisky

Would you believe mine is still languishing here in its original box - it`ll be a vintage model soon. I have thought about it from time to time but no action as yet. When it happens, I intend to use a DLE 20 for power and generally Hitec 645MG servos for the flying surfaces. I would imagine an OS or similar 120 fourstroke engine would do it OK too .... Best of luck with it ...

Alan W

Articsquirrel

thanks allen