Hi!

looking for scale landing gear, complete or just the struts, does anyone here have a set or know of any available for sale?

LMK
Thanks

Dave, do you happen to know if there is any carbon fibre in the intakes at all? I know where the strengthening carbon is on fuz but just wondered if there is any on intakes (both mine still bolt on) as thinking of aerial placement but one would be inline with one of the intakes...
When I rubbed them down for spraying I cannot recall seeing any carbon but it’s 9years ago now..😮

Alan

Alan

In the inlet itself, no Carbon. With Core it doesn’t seem to care! We taped two Rx aerials to a carbon radio tray and it still had great range, even from the opposite side of the carbon!

Dave thanks for that.

Also had maiden flight with my Honda T1 with 2 x 26ch last week and had the normal results 🤣

One mod I did as the aerials are very short was to increase length which made placement for second Rx a lot easier
Sent Cockpit back to Richard now on V19 one problem we did see was jumping of servos namely the tailplane which I solved by putting the Power Expander on 12ms and also the Cockpit frame rate on 12ms....
Power Expander took place of original FASST 14ch/MX22
Now got CTU for turbine data also Cockpit data on P2BUS

Alan

Hi Alan, seen your posts on PB Support, and DW, good to see our Hawks are still flying and getting facelifts now
I plan to thoroughly refresh mine with the PB Rx, fuel lines, servo connections to the wing, whatever else I can find after all these years and 400+ flights.

Alan what “CTU” are you using for turbine telemetry with the CORE? Was it easily implemented? I have a Mercury and 2 PBR-26D Rx for my Hawk. So this will be the first time I fly the Hawk with a gyro. I never felt it needed one.

Smart install BTW. And the CORE does appear to have truly great connectivity with its PB Rx. How it can “see through” CF is mysterious but I ain’t complaining!

Hi! Hope your doing good!

The CTU I am using is one done by Carsten and Sandor (Digitech) very good and easy to programme
got one on my T1 with the JetMunts 140XBL and the Hawk with the P120SX
I have Mercury SRS in T1 also got one in Elan with 100XBL
The Hawk was originally set up on Cockpit non SRS so got a Power Expander and as you had probably seen on Powerbox forums had problem with servos jumping until I found by setting all frame rates to 12ms in Expander and Cockpit cured the issue

Also no intention of ever putting gyro in the Hawk it just does not need it...

Alan

Hi, I’ll keep asking until I find them🙄🤦🏻‍♂️, does anyone have or know of a set of Carf Hawk scale struts for sale? If so let me know

Thanks!!!

Couple of flights with the thread starter today...awesome aeroplane still 🙂

Dave

Looks good weather at Elvington! 👍

Alan

Nice pic! I’ll have to get a pic of my Hawk and Mephisto on the ramp together as well

Hi Alan,

The Hawk dies not NEED gyros but their use on my three, 2 AW and 1 SkyGate, rudder and ailerons make them even better particularly in turbulence.

That said, I have recently been trying ATT ASSIST mode on roll on my PST Reaction using the Powerbox ISAT gyro. The result was quite amazingly good. Indeed with damping mode on rudder and elevator this gyro made the Reaction even nicer to handle in a way I cant quite describe.

ATT ASSIST in roll is brilliant !

Do you refer to the scale strut covers ?

It’s a scale strut set that used to be an option for this sport Hawk. If it was also made by Airtech (?) in Germany I would caution anyone considering that purchase as Airtech has gone out of business and in a messy way. The owner seemed quite put out and in fact I’m pretty sure he stole some money from me. So parts etc might be unavailable. Certainly don’t buy anything from Erwin.

Thinking more about gyro in Hawk it might be interesting to try attitude assist (or heading hold) on the elevator. I’ve never used it until now on my Royal equipped Mephisto but it holds a deck angle, on landing for instance, solidly. It’s really something to just adjust power and watch that plane coming down the glide slope. Well this Hawk does suffer from pitch coupling with power. Largely tamed with engine blocking and a down elevator to high thrust mix, but still noticeable especially when cutting the throttle prior to flaring. So the gyro might be useful there.

Hi David

I may just get round to trying the assist when I get to eat away from too much work 🤣 I’ll have to have a chat with you some time on how you got it set up 👍

Alan

No, I’m actually asking about scale alloy struts, the strut covers were offered for the bigger Carf Hawk as its’s landing gear struts are not scale

Hello

I'm looking for "walk around" pictures of a red Arrows Hawk (scale documentation) can anybody help me? I can offer a set of pictures of the Swiss U-1251 Hawk.

Thanks Oliver

These were taken a few years ago if it is of any help

Alistair Powers

Have to comment that idea of using gyro hold mode for pitch coupling. First of all I don't think it helps very slow trim chances second it makes flying feel odd. To me it feels somewhat artificial and well odd. I have newer liked it. Damping mode instead is good for scale apearance IMO. Hawk is nice flier without gyro and feels more stable with it. Kinda removes some turbulence and makes most days feel like a calm day.

But biggest thing I'm against this idea is fact that this Hawk has no speed coupling when CG is right and elevator throw is reduced accordingly. My engine is also raised on top of engine mounts. But 6mm and 700mm+ lenght... must be negligible

/Jyri

Well, if you were able to adjust your CG so that your Hawk would not climb at high power settings that is nice. I have my CG right where I want it and I have a simple mix which adds a tiny bit of down elevator from 50 to 100% throttle. I don't think that has much effect on having the nose drop when cutting power and flaring to land. I hear what you are saying about heading hold (HH) as my Mephisto is the first to have that in my fleet and it does fly a bit different. HH requires you to get off the sticks once you have achieved the correct attitude so that it can do its thing. Like gyros in general I use as little as possible to get the positive stabilizing effect I want but not have a robotic flying airplane. With the CORE and Mercury I will be able to vary the effect in different flight modes. Should be interesting to play with although I rarely mess around with that stuff! Until the Mephisto I was "no way " on HH.
I had a discussion about gyros with a very talented pilot (one of the best there is at prop/turbine pattern flying and the Mephisto in all modes) while setting up my Mephisto. We talked about the pros and cons of HH and the iGyro vs the Cortex. He told me one of the "secrets" of the Cortex popularity was that it incorporates small amounts of HH automatically, whereas the iGyro does not. So by adding a bit of HH to the iGyro in my Royal I am getting closer to the feel of the "CARF recommended Cortex" for that model. Anywhoo, that has sparked my interest in HH.

Thanks for the pictures of the Red Arrows Hawk!

Locking CG is a must and it is very personal thing. I'll give you that.

I haven't flown Hawk with iGyro so I can't comment on that. It inherited old Cortex from earlier plane. I don't know if it has partial HH in rate mode or not. Same setup actually has flown in both of my Hawks. There still seems to be a lot of things I can't explain in accurate terms when speaking about "feel". I'm still trying to find it after radio has changed from Futaba to Jeti. Expo is totally different and propably gyro gain is altered also.

Two experiences agains HH mode I have gained from Cortex non-pro and iGyro3e.
- Planes that don't have "pure" inputs like F-15 cortex used to fly with: don't use HH mode in rudder. It takes only seconds to find yourself on knife-edge snap or something after enabling HH. However this shouldn't be the case on Hawk. It has very rudder and small coupling to other controls if balanced right. But this is CG related thing. It is no way near one hand knife-edge capable if weighted forward. So be carefull with it.

- To me it's somewhat impossible to fly slow roll without elevator and rudder correction. HH mode is active only when one control is moved like you said. Corrections are very hard to unlearn to do. I have tried to lear this with my M346 Master that has i3e and has lots of coupling. IGyro is not able to hold dart like slow roll even on HH mode. It has good consistence but I bet I can do better slow roll by myself. HH doesn't hold tendency of gaining altitude when advansing throttle either. Here thust angle correction is something like 20 to 400mm. Gains can be low if they need to be very different on HH mode compare to Rate mode dunno. On landing approach HH ok but there is still big jump to learn not to make corrections. I gues this is that artificial feel I mentioned. If there is a jump to learn how elevator and throttle switch places on slow approach. I'd compare it to be equal to learn how to approach in HH mode and not make corrections.

/Jyri

Thanks for a great discussion Jyri, Obviously you have a lot of experience with this HH, I have almost none and certainly none in Hawk. Anyway I completely agree with most of what you say. Thanks for the warning about HH on rudder, I was told NEVER put HH on rudder and so have not. One of the main reasons I bought this Hawk (my first turbine) was because of the powerful rudder, Knife edge descent and climb and rolling loops and circles are possible (although I don't like to roll on descending side of loop it is too scary with this jet). I have the typical mixes in my Tx that allow rudder only KE easily without gyro. I find slow axial rolls and rolling maneuvers in general different with the Hawk because while the the rudder is powerful the stabilizer is not, I fly very low rates so I'm often approaching the limits on elevator while still using small amounts of rudder. I'm used to it after 400+ flights but compared to my other planes it is a bit unusual feeling. When I try HH on elevator I will see how I like it.

Hawk was my first turbine also. I like high side silhuette and rudder authority just like you. This has big influence on pure inputs it has. I think it is always a safe bet not to use HH on rudder. I think there must be something I have not yet found on HH mode just by looking how Havok Mephisto etc. new age sport planes. Both of my gyros are also evolved a step further now. Would be interresting to test some more but at this stage I still think gyro is not cure for aerodynamical issue. And HH has let me little disapointed so far. Hopefully I'm wrong it would be much faster to setup a good plane with computer instead of balancing and tweaking controls. One thing that is not always mentioned with gyros is servo travel speed their operate. It is feedback loop and speed must have a factor in it.

Your missing elevator authority combined with climb on high thrust suggest me your CG is more noseweighted than mine. I have almost opposite problem with elevator and I just reduced travel some more. I now have new and pristine plywood nose gear mounts and lighter tyre so balancing rearward than it used to. So my green one is now pretty close to my red that I liked a lot. Well weekend and RC meeting is coming.

Have fun experimenting
/Jyri

Have anyone here mounted the electron gear set In the hawk yet?

I’m doing some building on my hawk now, but I have the older Airtech gear with the race style wheels. I’m not too keen on mounting that gear in the jet, with the not too good looks and spare part availability problems, so I’ll try to sell them and get electrons instead.