Gary

You only got the small cylinder on the nose?

Marty, long as you are sorted.

Dave

I am working on the Hawk wings and the Festo air connection on the main gear air cylinder is hitting the wing top surface (both sides). My options are to block up the gear mount about 2mm with ply strips or rotate the cylinders. I am hesitant to rotate the cylinders only because the flat head socket screws holding them seem very soft and very tight. I would have to heat them which might damage the rubber parts...

I have also run into the issue with the flap pushrods being off from the mounted servo arm by about 5mm. Options are block up the servos (and there are a bunch of supplied little ply plates that could be used for that) or the dreaded "horn cracking", followed by routing out the holes in the spar. Hmmm...

Normally you can grind/file the lower wing skin where the nipple sits to get clearance. You don't want to pack the gear, its all snug in that wing and the wheel tyre will touch the inner doors already.

If its a small amount pack the servos. I have had no problems cracking the horns, but not everyone is successful
Going to email the factory about this now and see if we can get it fixed!

Dave

my push-rods are not alined either, but the both clevises were able to snap in with a very slight bent to them so I'm going to put CF rod over the stock rod. when i get the CF rods if it doesn't feel good enough then ill try adding a ball link to one end.

Dave, what is the chance of Carf releasing new color schemes on the Hawk.?

Thanks Dave, how thick is that wing skin?! As for the flap linkage, FYI, the rod comes from the flap horn and right thru the middle of the factory spar hole, but then hangs 5mm from the servo horn. So the factory should either put the servo packing in there and leave everything else the same or they have to change the angle on the flap horn and relocate the spar hole too. But I see now that the cracking required is very slight! Kenrico I would advise against ever bending a threaded rod, it makes them too weak and then they will flex too. If you go back thru the thread you will see you have to use CF tube over the pushrod or it will flex and I think the ball link is also not great because it will also deflect under load by twisting the servo arm.

the rods are not bent its the clevis that a very very slight bend can be seen.

Probably like mine then, I could just throw the linkage in there and have it be kinda bent or stressed but I'd rather not.

There is a foam inner layer and its normally that that needs trimming (3/32" foam skin)
I have been talking with the factory this morning and we are looking at the problem again.

Dave

Dave, How do you balance the Hawk? up-right or inverted ?

Thanks!

Upright, its not fussy. All of my balance points are "safe" some people will move them back a little, depends how neutral you want the aeroplane. It has a stack of elevator and rudder power, so set it nose heavy and use it as a rudder work out in rolls

Scheme wise I have not spoken to them about that, the aerobatic and Flash schemes 'needed' changing and that was started last year. Sales have slowed a lot. Custom schemes are possible...

Dave

Thanks Dave, im about ready to balance just got to finish up the flap set up, glue on intakes and ill be ready.
do you think 200mm would be about neutral on CG? I ask because i did a test flight on one for a friend bout a month back and it was way nose heavy i had to yank the elevator to get it off the ground, it was supposed to be balance at what the manual recommended.

thanks!

video http://www.youtube.com/watch?v=PIU-8rAa4F8

I'm going to fly mine tomorrow, if I get a chance I'll check the balance. What elevator neutral? Stock would be a little more than 4mm between the underside of the tail and the cover break line. more than 5mm+ would be nose heavy. How was the trim when you yanked it off?

I'd say 205mm is neutral, but I have not checked mine for 2+ years and I can't remember!

Dave

Watched the video, I'd expect it to "float" off with a small amount of back stick at the ground speed you had.

I didn't get Pic with it but the elevator trailing edge was way above the neutral you recommend after landing. If i rightly remember the top surface of the stab was below the break line,(probably why i had to pull so hard to get it off) by the time i landed i was almost out of trim travel on the Tx. some nose weight has been removed but the plane haven't flown since.

so would you say between 195 and 200mm i would still be "safe" for the Maiden?

Yes, should be fine. Ensuring the ailerons are level at the tip (sight the seam line) is the most important thing for nice landings.



Dave

Thanks Dave! Yeap the ailerons are neutral they actually have a very very slight raise to them. Ill try to post some pics later if RCU permits.

6wks till mine shows up from Alberta , got a good deal on a kero start Titan for it can't wait to get this one in the air.

Cool, you will be fine...

I'll try and remember to check mine tomorrow.

Dave

Not surprising as this could certainly be a factor of CARF's massive price increases last year. Price increases of 30% to 50%+ depending on kit are going to result in sales decreases. You may still consider them good value but, few companies can get away with price increases like that. Then they put on the "deal of the week" and discount them down but, still well above the old prices. They're not fooling anyone and I guess few are buying.

Also, nothings in stock ( in the USA) and what stock there is, is old.

I bought a Red Arrows Hawk last summer to back up my 2010 display scheme and finally just got around to building it and realize that it is a VERY old kit. Much older than the 2010 display Hawk I purchased the previous year. Missing one sheet with the fuselage fins, stab horns not pre-mounted, no fuse scoops, no wire for rudder hinge, no mount for the nose pitot. Very annoying to buy a new kit and realize it's an old one!

Mike



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I finished my Hawk a couple of weeks ago. Flew it during Easter in Holstebro, Denmark. I just love this aircraft.
A few pics.

[quote]ORIGINAL: luv2flyrc


Not surprising as this could certainly be a factor of CARF's massive price increases last year. Price increases of 30% to 50%+ depending on kit are going to result in sales decreases. You may still consider them good value but, few companies can get away with price increases like that. Then they put on the ''deal of the week'' and discount them down but, still well above the old prices. They're not fooling anyone and I guess few are buying.

Also, nothings in stock ( in the USA) and what stock there is, is old.

I bought a Red Arrows Hawk last summer to back up my 2010 display scheme and finally just got around to building it and realize that it is a VERY old kit. Much older than the 2010 display Hawk I purchased the previous year. Missing one sheet with the fuselage fins, stab horns not pre-mounted, no fuse scoops, no wire for rudder hinge, no mount for the nose pitot. Very annoying to buy a new kit and realize it's an old one!

Mike


Mike

None of the prices increased that much.

I don't see it as price, in England we have 200 ish active proper jet modellers, there have been 40-50 Hawks come into England...the other people probably don't want Hawks. As more new Jetites join the fold the CARF Hawk will sell more.
If you Hawk is missing the parts you list, contact Andy and he will get them sorted. I have no idea on stock there, but here everything was sold here several times, I guess it just was not as popular in the USA

Costs have gone up, fact of life, there was no price increase since the 2009 release, it was way overdue.

Flew the thread starter today, favourite model and always will be

Dave

Stig

Cool, mHz too!

Dave

[quote]ORIGINAL: Dave Wilshere


Thanks Dave, I did contact Andy and he was great to supply the missing parts, no problem there, my annoyance was that it was an old kit and the old kits were known for missing all those specific parts. You'd think someone would have topped it up before shipping to me so, I didn't have to go through the hassle.

I have to disagree with you on prices though, possibly the UK/ Euro ones didn't go up last year but, the USA ones sure did. Some examples, the Spit kit went from $1040 to $1690. The UF went from $1890 to $2290, most went up significantly with the one exception being the Hawk, it stayed the same. Oddly enough, the Hawk is less than an Ultra Flash.

Mike


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Hello All,
                My Hawk is ordered and i am told it is being built now. I have owned a number of jets and CARF have been the Best Flying and Safest if have owned. They are not cheap,but quality is not usually cheap.
I am sure i will need to modify the jet slightly , but i do enjoy the build [Usually].
                 I would like to scale it up but it is the Flying that i want to ensure is right.

Regards

John