CARF Skygate Hawk in the house !
03-06-2015, 11:49 AM
#851
Hi Topiwala, as for the static, I can't make a comment as I have not experienced it before. except, we use anti static agent in the fuel. for the landing gears, I noticed that the plates were not as hard as I like so I have doubled them from the bottom with hard ply. also, the screws that come with it are what is called Dry Wall screws. Got rid of them and used stainless Steel screws which have more thread and should hold better. Did you soak the holes with Thin CA?
Behzad
Behzad
03-06-2015, 12:50 PM
#852
Join Date: Sep 2010
Location: AucklandAuckland, NEW ZEALAND
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Yep. I've been using anti static in my fuel since my first ever jet flight. Holes all soaked in thin CA as well. I'm going to put in bolts with blind nuts. The mounting plates are pretty soft for the purpose. Should have been hard ply or carbon in my opinion.
03-06-2015, 01:16 PM
#853
Hi Again, I am not sure if you know that or not but you can spray anti static on the wheels / tires and that should take care of the static issue. I assume that you are flying in dry and warm environment.
Behzad
Behzad
03-08-2015, 08:43 AM
#857
Member
Toti I have 5 liters of fuel on board and 1.8 of smoke. The gear does squat when fully loaded. It has no problems taking off with full load on my 48lb Kingtech.
On my restrictions that I installed in the intakes. I started out with making a plate that fit up in the back of the intakes right about where it starts to curve and open up. I put a slot in the middle to allow some air to make in. It was to much blockage. The turbine was sucking the doors up and canopy under full throttle (I posted a youtube showing that). It was hauling the mail and didn't slow flight as well as I would like. I open up the slot and added some more holes to get to a happy spot with speed and landing.
I have seen some of the guys building a adjustable plate at the back in of the intakes. I read somewhere when they did that I would sometimes split open. It is very thin there.
If I had to guess it was about 60% restricted.
I don't have the pictures with me but look back in the thread my post 566. I used epoxy board from Dreamworks to cut them out from and epoxy them in.
On my restrictions that I installed in the intakes. I started out with making a plate that fit up in the back of the intakes right about where it starts to curve and open up. I put a slot in the middle to allow some air to make in. It was to much blockage. The turbine was sucking the doors up and canopy under full throttle (I posted a youtube showing that). It was hauling the mail and didn't slow flight as well as I would like. I open up the slot and added some more holes to get to a happy spot with speed and landing.
I have seen some of the guys building a adjustable plate at the back in of the intakes. I read somewhere when they did that I would sometimes split open. It is very thin there.
If I had to guess it was about 60% restricted.
I don't have the pictures with me but look back in the thread my post 566. I used epoxy board from Dreamworks to cut them out from and epoxy them in.
I was tempted by Your idea of using restrictions in the intakes on my Skygate CARF Hawk. Very curious about the Level of restriction. I have a Behotec engine that pulls 200N (20kg). Do you think my restriction is too much?
Brgs,
Thomas Lorentzen
Jets of Norway
03-08-2015, 11:26 AM
#858
Join Date: Jan 2014
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Hi all,
It has been a pleasure to read this thread, and it has been a great inspiration for me.
I am building a Swiss version Carf Hawk with a 20 kg Behotec 190. (I hope to be ready in 4 -5 weeks).
I have purcahsed the original Carf gear, and then Behotec rebuild it to the electric version, and its really smooth in the operation. I had all the same challenges with mounting the gear, and it took quite a while - but it is working now.
I had another Hawk, and I was not so happy about connecting 2 servos for the elevator and let them run in parallel, so I manufactured a small unit that will work with 2 servos, and it will allow the servos to run with small differences without binding. If one servo fails, then the small arm with the ball bearing can only move few milimeters, and the system can be operated with only one servo in case of a servo failure.
I have not tried it so far on the Carf Skygate, but it is very rigid and strong. I will keep you posted with the progress
Kind regards,
Henrik, Denmark
It has been a pleasure to read this thread, and it has been a great inspiration for me.
I am building a Swiss version Carf Hawk with a 20 kg Behotec 190. (I hope to be ready in 4 -5 weeks).
I have purcahsed the original Carf gear, and then Behotec rebuild it to the electric version, and its really smooth in the operation. I had all the same challenges with mounting the gear, and it took quite a while - but it is working now.
I had another Hawk, and I was not so happy about connecting 2 servos for the elevator and let them run in parallel, so I manufactured a small unit that will work with 2 servos, and it will allow the servos to run with small differences without binding. If one servo fails, then the small arm with the ball bearing can only move few milimeters, and the system can be operated with only one servo in case of a servo failure.
I have not tried it so far on the Carf Skygate, but it is very rigid and strong. I will keep you posted with the progress
Kind regards,
Henrik, Denmark
03-08-2015, 03:52 PM
#860
It looks good to me. I would fly it first and if you have anyway of mounting a camera on the belly to see if the gear doors are being forced open when you increase the speed then you need more restriction.
to give you a reference I fly mine at 3/4 throttle and see about 150 mph and 180 mph on level full throttle.
But fly it first. You may like the speed and still be able to slow it down for flybys and approaches.
Keeps us up to date on it.
03-08-2015, 09:33 PM
#861
Member
Thanks Jeff,
I will testfly in a couple of weeks. Will attach a small camera underneath to check on the gear doors. Will post the result :-)
Brgs,
Thomas Lorentzen
Jets of Norway
I will testfly in a couple of weeks. Will attach a small camera underneath to check on the gear doors. Will post the result :-)
Brgs,
Thomas Lorentzen
Jets of Norway
03-14-2015, 08:49 AM
#863
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Fues Vents
Has anyone installed these vents in their Hawks. If so, how did you go about cutting the openings in the fues? I am having a hard time
figuring out how to do this neatly without destroying something in the process.
figuring out how to do this neatly without destroying something in the process.
Last edited by youngguy; 03-14-2015 at 08:54 AM.
03-14-2015, 09:13 AM
#864
behzad
03-14-2015, 10:36 AM
#865
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Thought of doing just what you suggested but didn't like the idea. Not sure that I am steady enough to do the cuts. Might have to try it if there are no other suggestions. What type of glue did you use Behzad? I was considering canopy glue.
03-14-2015, 11:36 AM
#866
I have bought the gel CA from BVM that is called Rubber Toughtened CA PT 44. It is great stuff. It sticks well and does not run. I glued all those with that and then went over it with Aero poxy. (Overkill) then will be painting the edges that were cut.
behzad
behzad
03-25-2015, 02:42 AM
#868
Hi All,
Anyone out there using Jeti and specifically their MSpeed IAS? Am interested in where you decided to locate the pitot tube.
Thanks for any guidance
Bob
Anyone out there using Jeti and specifically their MSpeed IAS? Am interested in where you decided to locate the pitot tube.
Thanks for any guidance
Bob
03-26-2015, 07:41 AM
#869
Hi All,
Be grateful if someone could post pictures of the aileron linkage covers. These look to be as fiddly as the main gear covers and I want to make mine removable.
Thanks
Bob
Be grateful if someone could post pictures of the aileron linkage covers. These look to be as fiddly as the main gear covers and I want to make mine removable.
Thanks
Bob
03-26-2015, 08:19 AM
#870
Hi Bob
I might have taken some pictures during the process. I will check tonight and if yes, will post. Once going at it, it is easy. just needs some care to make sure they work together.
Behzad
I might have taken some pictures during the process. I will check tonight and if yes, will post. Once going at it, it is easy. just needs some care to make sure they work together.
Behzad
03-27-2015, 01:58 AM
#874
Join Date: Jan 2007
Location: farnborough, , UNITED KINGDOM
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For smaller screws - check this company out, smallest I have ever found and used extensively on most of the builds I have done including the SG Hawk way back...
http://www.microfasteners.com
marcs
http://www.microfasteners.com
marcs
03-27-2015, 03:04 AM
#875
Linkage Covers
Am in need of some advice please. The aileron horns are set too high for the cover.
I also assume, if the linkage is not to be exposed as the aileron moves up, the face of the cover needs to be angled backwards to extend further over the linkage which will exacerbate the height difference. So, some questions;
1 - should I simply lower the horns (reluctant to do this but might be a simpler solution in the end)
2 - just raise both covers up enough to make it work
3 - Has anyone taken the trouble to angle the face of the cover to avoid exposing the linkage as the aileron moves and if so, were you successful?
Thanks again for your advice
Bob
Am in need of some advice please. The aileron horns are set too high for the cover.
I also assume, if the linkage is not to be exposed as the aileron moves up, the face of the cover needs to be angled backwards to extend further over the linkage which will exacerbate the height difference. So, some questions;
1 - should I simply lower the horns (reluctant to do this but might be a simpler solution in the end)
2 - just raise both covers up enough to make it work
3 - Has anyone taken the trouble to angle the face of the cover to avoid exposing the linkage as the aileron moves and if so, were you successful?
Thanks again for your advice
Bob