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What CARF is this? - 10/31/2012 5:18 AM   
acdii


 

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From: Capron, IL, USA
Status: offline 		Picked this up tonight, has a new DA 100(I think based on the DA50 cylinder heads), and a few other items inside not familar with which look like digital servo programmers in the wings for the two aileron servos in each wing. I thnk its a 3 meter span, but havent measured it yet.


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RE: What CARF is this? - 10/31/2012 8:07 AM   
stuart_80


 

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Status: offline 		 CARF Extra 260, 3m ? Although I was sure that was based around a 150cc engine

Stuart


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RE: What CARF is this? - 10/31/2012 2:42 PM   
acdii


 

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From: Capron, IL, USA
Status: offline 		Doing a lot of searching, and none of the models listed on Composite site match up with this particular plane. The closest seems to be the 300SX.  This might be the 300S since it has the flat spar.

quote:

Everything started with the classic 3m sized Extra 300 S design, scaled down to 2.6m to make it more affordable to a larger number of aerobatic enthusiasts without loosing much flight performance compared to the 40%. We put a lot of new input into that design, like the flat wingspar instead of a tube and changing it to the large canopy of the „300 L“ to improve the knife-edge a little bit. That totally made sense in times, where only the 100cc twins were a reasonable choice for that size of airplane.

I just cant seem to find anything on a 300S 


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RE: What CARF is this? - 10/31/2012 3:25 PM   
Zeeb



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From: Highland, UT, USA
Status: offline 		Well I'm not an expert on the older Comp-Arfs but that flat spar deal on the 2.6 size birds created a real stink for Comp-Arf when people found out there was a "competition" version of the 300 in the fantasy scheme using a wing tube and it was about 4lbs. lighter than the rest.....

Then everything got changed to wing tubes instead of spars and they lost a lot of weight.

It's not a 260 for sure because I have one of those and it's got a wing tube and other changes you don't see on this model, basically it was the last addition to the 2.6 size models until the Edge 540 was released.

This is a Comp-Arf 2.6 size Extra 260:



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RE: What CARF is this? - 10/31/2012 5:12 PM   
acdii


 

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From: Capron, IL, USA
Status: offline 		The real question, I don't care much about the weight, but is it strong?   I had a Four Star 120 that the wing spar snapped on and the wing came off in flight. I don't want a repeat, and This looks like a plane that can do some serious moves. 



Even if I did get it for dirt cheap.  I mean, really really really really cheap.


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RE: What CARF is this? - 11/1/2012 12:42 AM   
karolh


 

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Status: online 		Careful as the guy you bought it from might just be reading this thread

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RE: What CARF is this? - 11/1/2012 1:38 AM   
acdii


 

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Status: offline 		Nah, I just talked to him, he has some more stuff for me, like the transmitter and some other items. He's a really nice guy who I have helped with some networking stuff and programming. I brought the parts in and stuck it all together. It a big sucker, should have NO problems keeping it in sight! LOL


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RE: What CARF is this? - 11/1/2012 3:09 AM   
speedracerntrixie


 

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Status: offline 		It's an older Comp ARF Extra 300S 2.6M. The cowl should still be available. I don't think they changed the fuse much on the newer ones other then to make them a wing tube. They tended to come out around 28 lbs. Still flew really well and is a better IMAC type airplane then 3D. The wing blade is very strong. The only real issue is that you need to keep an eye on the fit between the fuse and the wing blade. Once some play develops the blade can bang back and forth and fracture right where it exits the fuse. To tighten up you can edge seal the hole in the fuse with thick CA and then carefully file back open until you get a nice snug fit. It's a really nice airplane but you need to fly it to the ground and don't let it get too slow.


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RE: What CARF is this? - 11/1/2012 3:21 AM   
acdii


 

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Status: offline 		How are the stabs secured? I dont see any fasteners on them.  The guy I got it from has all the rest of the pieces for it and the manual somewhere.  It also has a power block on it with 2 4000 mah lipos. Looks like it was made in 2004.


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RE: What CARF is this? - 11/1/2012 4:20 AM   
speedracerntrixie


 

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Status: offline 		There is a hard point in the stab located in line with the stab tube. While assembled and upside down you need to drill through the hard point and into the tube with a 3/32 drill bit. then tap 4-40. Screws will hold the stabs to the tube. Remove one side only and keep the tube assembled onto one stab.


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RE: What CARF is this? - 11/1/2012 1:48 PM   
acdii


 

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Status: offline 		OK, I guess he never got that far in the construction then. The plane is only partially completed.

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RE: What CARF is this? - 11/4/2012 2:29 AM   
acdii


 

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Status: offline 		Well he found the manual and rest of the parts. Its a 330L 2.6M. I found the section on the stabs, and it all makes sense now. Thanks.


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RE: What CARF is this? - 11/4/2012 11:59 PM   
karolh


 

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RE: What CARF is this? - 11/5/2012 1:43 AM   
captinjohn


 

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Status: offline 		me 2....what engine is that on it?

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RE: What CARF is this? - 11/5/2012 1:49 AM   
acdii


 

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Status: offline 		I started working on it today, took the electronics out so I can bench test everything and make some battery cables to hook up a pair of Lipo packs to drive the powerbox 40/24.  I have to go through all the servo setups, from what I tested do far, they are out of sync or not centered correctly and my not have the correct linkages or arms installed. The one wing I tested, the dual servos were buzzing like mad, and I found out the arms werent equal so they were fighting each other. There is also a JO servo matcher on each wing, so need to figure out how they work too.

And here I thought the landing gear sequencer for my Mustang was complicated.


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RE: What CARF is this? - 11/5/2012 1:52 AM   
acdii


 

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quote:

ORIGINAL: captinjohn

me 2....what engine is that on it?


It has a DA 100 twin on it.  Hoping to get it running in the next few weeks.



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