Comp ARF BAE Hawk build thread
04-04-2017, 07:17 AM
#2201
Senior Member
Not braking with 9bar sounds strange. Last summer I used 3bar with pulsating valve and still managed to get small flats on the tires. Is the o-ring hard as glass? Actually this wouldn't be bad at all if controllable and symmetrical 
btw. My new Hawk is ready for maiden. AUW 11,7kg with just CAT fuelled. Full lights and smoke system on board. Didn't even try to make it light weight... This is to be trainer for the another one and it is heavier with scale gear and all the details. Some 70g of lead on the nose...
/Jyri
btw. My new Hawk is ready for maiden. AUW 11,7kg with just CAT fuelled. Full lights and smoke system on board. Didn't even try to make it light weight... This is to be trainer for the another one and it is heavier with scale gear and all the details. Some 70g of lead on the nose...
/Jyri
Mine weights 12,7 kilo with CAT fueled, with lightning system and cockpit plus pilot.
04-07-2017, 02:09 AM
#2204
04-08-2017, 09:39 AM
#2205
Thread Starter
Had the old girl out today, I've not flown her since mid last year, so it was good to start our 8th year together. Everything is as the original install, servos, Powerbox, DSX-12, batteries, hopper tank, felt clunks. Two faultless flights on our 370' grass strip that is still a little rough after the winter.
Last edited by Dave Wilshere; 04-08-2017 at 09:47 AM.
04-11-2017, 10:59 AM
#2208
Senior Member
Seems to be the O-rings where greasy.
After cleaning with alcohol, braking power perfect!
Thanks for the suggestions!
05-02-2017, 07:01 AM
#2209
Junior Member
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retract for carf bae hawk 1/5,3
Hello new ham on this forum...I think i'm in the righe thread...I would ask you i just bought the carf bae hawk 1/5,3 and i would like to know that retractable you have mounted you...I would be interested in mounting electron Er 40 some of have you alredy mounted it? In case do you know to Tell my legs and brake diameter to buy? Thanks to Everyone in advance!
05-02-2017, 07:16 AM
#2210
Hello new ham on this forum...I think i'm in the righe thread...I would ask you i just bought the carf bae hawk 1/5,3 and i would like to know that retractable you have mounted you...I would be interested in mounting electron Er 40 some of have you alredy mounted it? In case do you know to Tell my legs and brake diameter to buy? Thanks to Everyone in advance!
T
05-09-2017, 07:41 AM
#2212
Hello new ham on this forum...I think i'm in the righe thread...I would ask you i just bought the carf bae hawk 1/5,3 and i would like to know that retractable you have mounted you...I would be interested in mounting electron Er 40 some of have you alredy mounted it? In case do you know to Tell my legs and brake diameter to buy? Thanks to Everyone in advance!
the ER40 will not fit , because the mounting lugs of the landing gear for this hawk is in the middle and low profile
Airtech do make an electric conversion for the set if you want electric
if you want the original pneumatic set , I have a friend selling his because he crashed the plane and the landing gear is with no damage - contact me by private message and I can see if he wants to sell it ( maybe he will buy another hawk)
izzy
05-15-2017, 09:13 AM
#2217
Originally Posted by izzy
Airtech do make an electric conversion for the set if you want electric
izzy
izzy
If possible to convert to electric on the hawk, I will consider to do that on my unbuilt one, to be able to use the xicoy controller with gyro assisted braking and nose wheel steering.
05-17-2017, 03:01 PM
#2219
WOW, finally had time today to maiden my HAWK. What a great jet. :-)
Manage to get 5 flights without any issues.
https://youtu.be/TumRioQZtqQ
Manage to get 5 flights without any issues.
https://youtu.be/TumRioQZtqQ
CARF hawk is on the bucket list
05-17-2017, 06:01 PM
#2221
Good job Didier! I of course looked at your landing first, nice landing attitude. Beware of flaring too much. I had a mishap with mine on the 16th flight from over rotating in the flare. Once the nose gets up above 10 degrees or so it is too easy to continue to a very high alpha and snap roll at very low airspeed. In my case that required a new fin and canopy... So don't do that!. Like you did I just set a nice shallow deck angle and let it settle. It was my first jet and I still love her after approximately 300 flights. An outstanding flyer with wonderful handling qualities. A very powerful rudder for a scale jet. She can be flown quite slowly but not at high pitch angles (AOA). Get an F-16 for that!
There has been some talk of different gear for this Hawk and I only know the stock air gear. 300 flights and the only thing is I had to replace the O-rings that seal the piston shaft around 20 flights. I use a landing gear failsafe so there was never any damage. The shafts have a bit of tooth to them on my bird and the original O-rings just wore out. Plus here in California it is dry and dusty on the asphalt runways so that dust is abrasive.
My prediction is that while other jets may come and go you will always have your Hawk
There has been some talk of different gear for this Hawk and I only know the stock air gear. 300 flights and the only thing is I had to replace the O-rings that seal the piston shaft around 20 flights. I use a landing gear failsafe so there was never any damage. The shafts have a bit of tooth to them on my bird and the original O-rings just wore out. Plus here in California it is dry and dusty on the asphalt runways so that dust is abrasive.
My prediction is that while other jets may come and go you will always have your Hawk
05-18-2017, 06:03 AM
#2222
Senior Member
Good job Didier! I of course looked at your landing first, nice landing attitude. Beware of flaring too much. I had a mishap with mine on the 16th flight from over rotating in the flare. Once the nose gets up above 10 degrees or so it is too easy to continue to a very high alpha and snap roll at very low airspeed. In my case that required a new fin and canopy... So don't do that!. Like you did I just set a nice shallow deck angle and let it settle. It was my first jet and I still love her after approximately 300 flights. An outstanding flyer with wonderful handling qualities. A very powerful rudder for a scale jet. She can be flown quite slowly but not at high pitch angles (AOA). Get an F-16 for that!
There has been some talk of different gear for this Hawk and I only know the stock air gear. 300 flights and the only thing is I had to replace the O-rings that seal the piston shaft around 20 flights. I use a landing gear failsafe so there was never any damage. The shafts have a bit of tooth to them on my bird and the original O-rings just wore out. Plus here in California it is dry and dusty on the asphalt runways so that dust is abrasive.
My prediction is that while other jets may come and go you will always have your Hawk
There has been some talk of different gear for this Hawk and I only know the stock air gear. 300 flights and the only thing is I had to replace the O-rings that seal the piston shaft around 20 flights. I use a landing gear failsafe so there was never any damage. The shafts have a bit of tooth to them on my bird and the original O-rings just wore out. Plus here in California it is dry and dusty on the asphalt runways so that dust is abrasive.
My prediction is that while other jets may come and go you will always have your Hawk
Thanks guys, but all credits to this awesome jet. It fly's so neutral, unbelievable! :-)
@Husafrak, Thanks for the tip and probably you are right, it is a keeper.
I always thought my UF was the one to keep but now I don't know for sure. ;-)
So you preferred the first landing in the video instead of second?
The second landing it was a powered landing until touch down. I did it on purpose to see the limits.
05-18-2017, 01:17 PM
#2223
Good job Didier! I of course looked at your landing first, nice landing attitude. Beware of flaring too much. I had a mishap with mine on the 16th flight from over rotating in the flare. Once the nose gets up above 10 degrees or so it is too easy to continue to a very high alpha and snap roll at very low airspeed. In my case that required a new fin and canopy... So don't do that!. Like you did I just set a nice shallow deck angle and let it settle. It was my first jet and I still love her after approximately 300 flights. An outstanding flyer with wonderful handling qualities. A very powerful rudder for a scale jet. She can be flown quite slowly but not at high pitch angles (AOA). Get an F-16 for that!
There has been some talk of different gear for this Hawk and I only know the stock air gear. 300 flights and the only thing is I had to replace the O-rings that seal the piston shaft around 20 flights. I use a landing gear failsafe so there was never any damage. The shafts have a bit of tooth to them on my bird and the original O-rings just wore out. Plus here in California it is dry and dusty on the asphalt runways so that dust is abrasive.
My prediction is that while other jets may come and go you will always have your Hawk
There has been some talk of different gear for this Hawk and I only know the stock air gear. 300 flights and the only thing is I had to replace the O-rings that seal the piston shaft around 20 flights. I use a landing gear failsafe so there was never any damage. The shafts have a bit of tooth to them on my bird and the original O-rings just wore out. Plus here in California it is dry and dusty on the asphalt runways so that dust is abrasive.
My prediction is that while other jets may come and go you will always have your Hawk
Bob
05-18-2017, 09:19 PM
#2224
Thread Starter
Does not need CROW if the ailerons are set correctly in line with the seem. We all land mains, holding the nose up with no break away. Yes any Hawk will have a point where the wing tips stop flying before the wing root, but you can feel that on the elevator when it starts to go dead.
Didier, the approaches I saw are fine, you can keep experimenting, grass is much more forgiving. Doing what you were you can hold off in ground affect and it will touch down on the mains
Didier, the approaches I saw are fine, you can keep experimenting, grass is much more forgiving. Doing what you were you can hold off in ground affect and it will touch down on the mains
05-19-2017, 04:18 AM
#2225
Does not need CROW if the ailerons are set correctly in line with the seem. We all land mains, holding the nose up with no break away. Yes any Hawk will have a point where the wing tips stop flying before the wing root, but you can feel that on the elevator when it starts to go dead.
Didier, the approaches I saw are fine, you can keep experimenting, grass is much more forgiving. Doing what you were you can hold off in ground affect and it will touch down on the mains
Didier, the approaches I saw are fine, you can keep experimenting, grass is much more forgiving. Doing what you were you can hold off in ground affect and it will touch down on the mains
Bob