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Old 08-05-2013, 03:23 AM
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Hi!

I'm having difficulties deciding on which Extra 330sc 2.6m to get. The Carf or the Krill? I was first set on the Krill but it looks like it's a lot of work on them to get them up in the air (quality issues like incidence angles etc). When looking at the Carf it seems like they have put a lot more work into the kit (it practically comes finnished out of the box), would have preferred centre hinged ailerons though...

Any comments/thoughts that would help me decide would be very appreciated!

BTW, nice build Andrew! It looks great!

Thanks!
//Johan
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Old 08-05-2013, 03:55 AM
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Johan,

It depends on what kind of flying you want to do. The Comp arf is stiffer and a better sequence / IMAC plane. It still 3d's very well but the Krill 3d's better / is more aggressive. That said - the comp arf is a way better sequence plane. The Krill doesn't have a huge amount more work in it than the comp arf provided it comes supplied to the correct quality standards. Unfortunately my Krill was not and it took a lot of work to get it straight, it cost money to get parts machined up to sort out the tail incidence (one of my wings was also off) and whilst my rep did try to help, the factory didn't seem to care and I didn't even get a response when I sent my rep emails to be forwarded listing all the faults and trying to give some constructive feedback. It took 3 months to get a replacement elevator after one of the originals was supplied warped (although my rep was excellent and lent me his as he wasn't flying his plane) and there is nothing I can do about the faults with the paint.
The Krill is a pretty aircraft, they really got the lines right V the comp arf which looks good but doesn't quite have the scale outline. The paint on my Comp arf is excellent and I really like how they have painted the top of the plane out of the mould so it's de-seamed.
I was thinking the same way as you about the ailerons. The comp arf ailerons are very powerful though and work well. It only took around 10% differential to get everything axial.
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Old 08-05-2013, 04:19 AM
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Thanks Andrew for the comments! It's primarily going to be used as an IMAC plane so I guess it's leaning towards the Carf then:P Yes the Krill sure is beautiful but I'm at the same time not to keen on throwing money at someone who doesn't seem to take the quality issues seriously...

/Johan
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Old 08-05-2013, 10:31 AM
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The Skydancer scheme looks great. Good to see something a bit different.

It's looking like I'll be getting the same scheme as Andrew's but with orange instead of magenta. Can't wait!

Tim

Tim

That's my favourite!

Dave

Here are some pictures of my 3.1m Chequer Scheme.

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Old 08-05-2013, 10:36 AM
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Beautiful plane Dean, if I go Carf I will go for the orange theme.

Btw, is this the correct header dimensions which are on Carfs homepage:
http://www.carf-models.com/public_ca...ory&proId=2033

I was planning on using a DLE 111 with tuned pipes.

/Johan
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Old 08-05-2013, 10:48 AM
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Here are some pictures of my 3.1m Chequer Scheme.

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Beautiful plane Dean, if I go Carf I will go for the orange theme.

Early this morning I got home from a contest near Denver, Colorado. I had 24 practice flights on the plane before the contest.

The CARF-Models Extra 330SC flies incredible. Several pilots commented on how smooth, solid, and locked in it flies. It is an absolute blast to fly.
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Old 08-05-2013, 10:55 AM
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Hehe, I get your point. As soon as the Carf rep finnishes my quote, I think I will pull the trigger!

Congrats on the 1st place!

/Johan
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Old 08-05-2013, 12:23 PM
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Originally Posted by Parakos View Post
Btw, is this the correct header dimensions which are on Carfs homepage:

http://www.carf-models.com/public_ca...ory&proId=2033

I was planning on using a DLE 111 with tuned pipes.

/Johan

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As soon as the Carf rep finishes my quote, I think I will pull the trigger!

/Johan

If Andrew doesn't get back online before you talk to the Sales Rep, they should be able to assist with the correct header length.
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Old 08-06-2013, 01:31 AM
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Johan

Yes, 60mm drop is about right, I've done several sets of headers now for the 330 2.6 and with pipes you have a bit more flexibility because of the slim shape near the wing tube. We have also used Zimmermann 50mm and 60mm cans in this machine.

Aileron wise, CARF went "live" hinged because of the weight saving in the wing, it makes the snaps stop even better with less weight outboard. Aileron power is good as Andrew says and depending on movement 8-10-% differential seems to nail it.

Dave W
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Old 08-06-2013, 01:43 AM
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Thanks Dave!

I just pulled the trigger and managed to secure the last kit which is on it's way now! Should have it by the end of this month, can't wait!:P

Anyone have an ETA on the manual? Curious on which servo horn length and spinner needed.

//Johan
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Old 08-06-2013, 02:50 AM
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Thanks for all the info guys... very useful.

I'm planning to run a DA120 on RE2s - I've got 50mm flex headers so hopefully that'll work. As pointed out by Andrew before, the DA120 is a pretty light motor so I'll probably have to get everything as far forward as possible to achieve CG.

I'll be running Futaba BLS157s all round, with a Powerbox SRS.

I really like the CARF squeal, so I'm kinda happy about the live hinging!

Tim
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Old 08-06-2013, 03:19 AM
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Johan,

It needs a 5" spinner and I used 1.5" arms on the elevators, 1.75" arms on the ailerons and I think I'm using a 3.5" secraft offset servo arm on the rudder which keeps good tension in the wires. If you want to fly IMAC only, obviously you can just go shorter. I use this set up so I can IMAC and 3d the plane with rate changes.
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Old 08-06-2013, 06:12 AM
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Mine is also supposed to ship by the third week of August. I changed the color scheme to yellow and black just like Dean's larger version but with no black at the top of the rudder.

But to be different I'm putting in a Valach 120 4 stroke engine.

I also plan on some other modifications to the fuselage and wings, things that I have seen done on other forums for similar planes and some things I've done on two of my other Carf's.

I plan to doing a build thread with my modifications sometime in November once the flying season ends.
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Old 08-06-2013, 06:16 AM
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[QUOTE=Andrew Bird;2007977]Johan,

It needs a 5" spinner and I used 1.5" arms on the elevators, 1.75" arms on the ailerons and I think I'm using a 3.5" secraft offset servo arm on the rudder which keeps good tension in the wires. If you want to fly IMAC only, obviously you can just go shorter. I use this set up so I can IMAC and 3d the plane with rate changes.[/QUOTE]


Andrew where is your CG in regards to the wing tube. I can't find a build manual for the 2.6 plane.

I am interested in flying IMAC NOT 3D!

Thanks
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Old 08-06-2013, 07:24 AM
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Just got a mail from my sales rep telling me that they mixed up the color labeling at the factory and my reserved kit is the magenta version. It's a nice scheme but I'm worried that the megenta doesn't contrast enough against the black wing bottom?

If I decide to wait for the orange one it's going to be around 8 weeks delivery time. Arrrg decisions:P

/Johan
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