Skymaster plus 1:5.5 BAE Hawk
- hav'nt seen that set up before.....looks like a great idea!
12-20-2009, 12:52 PM
#228
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RE: Skymaster plus 1:5.5 BAE Hawk
ORIGINAL: ECalderon
Hi guys:
This is the modification I did to my Hawk to solve the problem of the rubbing of the elevator horn against the aft fuselaje hatch and to solve the closeness to the pipe issue.
First I turned arround the elevator horn and trimmed the top and made new holes so tha the hole was almost vertical to the the pivot point of the elevator. This way you solve the rubbing problem and since the holes are closer to the pivot point the throw of the elevator horns are equal for up and down elevator. The reduction of the leverage from the pushrod, beacuse the hole is now closer to the pivot poin should not be a problem with strong servos (I'm playing it safe using two 8711, I know its probably overkill but I have peace of mind)
Then I eliminated the servo tray and made a new one and installed the servos facing each other flat on their sides. This way the servo tray protects the servos from the pipe and the geometry is better. The factory setup binds at extreme throws of the elevator since the axis of rotation of the clevis in the elevator horn and at the servo arm are 90º to each other. This way they are both paralel and there is no binding.
I must say that I copied this idea from ACRORED that is our builder master at our local field, from another Hawk he built.
The photos below should solve any doubts if the explanation above is not clear enough.
Regards
Eduardo
Hi guys:
This is the modification I did to my Hawk to solve the problem of the rubbing of the elevator horn against the aft fuselaje hatch and to solve the closeness to the pipe issue.
First I turned arround the elevator horn and trimmed the top and made new holes so tha the hole was almost vertical to the the pivot point of the elevator. This way you solve the rubbing problem and since the holes are closer to the pivot point the throw of the elevator horns are equal for up and down elevator. The reduction of the leverage from the pushrod, beacuse the hole is now closer to the pivot poin should not be a problem with strong servos (I'm playing it safe using two 8711, I know its probably overkill but I have peace of mind)
Then I eliminated the servo tray and made a new one and installed the servos facing each other flat on their sides. This way the servo tray protects the servos from the pipe and the geometry is better. The factory setup binds at extreme throws of the elevator since the axis of rotation of the clevis in the elevator horn and at the servo arm are 90º to each other. This way they are both paralel and there is no binding.
I must say that I copied this idea from ACRORED that is our builder master at our local field, from another Hawk he built.
The photos below should solve any doubts if the explanation above is not clear enough.
Regards
Eduardo
So this is the way to do it?
Im starting on my elevators now.
Thomas
12-20-2009, 01:18 PM
#229
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RE: Skymaster plus 1:5.5 BAE Hawk
Hi Guy's
Excuss my lack of wisdom on this but other than the duel tires on The T-45 what else is different between the Hawk and the T-45, I guess the reason I ask is can this plane be made into the T-45
Thanks, Dave
Excuss my lack of wisdom on this but other than the duel tires on The T-45 what else is different between the Hawk and the T-45, I guess the reason I ask is can this plane be made into the T-45
Thanks, Dave
12-20-2009, 02:59 PM
#231
RE: Skymaster plus 1:5.5 BAE Hawk
Anyone have an issue with the inner gear doors hitting the ground on landing? I'm assembling mine, it appears that on the full scale, the inner doors stay open when the mains are down but, on the Skymaster there is easily sufficient travel in the oleo's to allow the doors to snuff the ground on a heavy landing.
If it's an issue, what did you do to resolve it. I've thought about setting it up so that the main doors go back up after the gear comes down (ala P-51).
TIA
Mike
If it's an issue, what did you do to resolve it. I've thought about setting it up so that the main doors go back up after the gear comes down (ala P-51).
TIA
Mike
12-20-2009, 03:34 PM
#232
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RE: Skymaster plus 1:5.5 BAE Hawk
I tryed to set up the elevator pr the manual. Wow Skymaster, you`v had no time to fix this? Not to bash skymaster, but this issue should have been fixed-long time ago.
My plane is fresh out of the factory. Time to mod. One other thing that amazed me was the lack of wood for the rudder horns in the flaps. Do we have to put it in our self?
And why is it round holes i the wing spares on one wing, and Rectangular ones on the other?
Thomas
My plane is fresh out of the factory. Time to mod. One other thing that amazed me was the lack of wood for the rudder horns in the flaps. Do we have to put it in our self?
And why is it round holes i the wing spares on one wing, and Rectangular ones on the other?
Thomas
12-20-2009, 04:23 PM
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RE: Skymaster plus 1:5.5 BAE Hawk
ORIGINAL: luv2flyrc
Anyone have an issue with the inner gear doors hitting the ground on landing? I'm assembling mine, it appears that on the full scale, the inner doors stay open when the mains are down but, on the Skymaster there is easily sufficient travel in the oleo's to allow the doors to snuff the ground on a heavy landing.
If it's an issue, what did you do to resolve it. I've thought about setting it up so that the main doors go back up after the gear comes down (ala P-51).
TIA
Mike
Anyone have an issue with the inner gear doors hitting the ground on landing? I'm assembling mine, it appears that on the full scale, the inner doors stay open when the mains are down but, on the Skymaster there is easily sufficient travel in the oleo's to allow the doors to snuff the ground on a heavy landing.
If it's an issue, what did you do to resolve it. I've thought about setting it up so that the main doors go back up after the gear comes down (ala P-51).
TIA
Mike
I never came around to test the gear on landing on my first hawk
http://www.youtube.com/watch?v=txZVfa34Rfo Enyoy!
12-20-2009, 06:17 PM
#234
RE: Skymaster plus 1:5.5 BAE Hawk
hey Mike!
i build mine to last so doors are closed when gear is down...i just dont have time for repairs after im done with a jet...
Thomas take a look at the photos of "POWERJET" to see what i advised him..it works well and we use all servo throw for better resolution
yes manual for the elevator is not good
if ill ever build a hawk again ill go with a single hitec 7955 on the elevatore so ill save the nose waith...still overkill.
\
also when you glue the horns in ailerons /flaps/rudder use hysol and make sure you lots of it in the hole so you create a good suport.
no there is no need for wood..you can always overbent gently the sufrace so to reach the fromt part of the horn unterneath to hysol it too
perche
im so sorry for your loss
your bad runway gaved "up" input incidence to your hawk and you tookoff from your engine thrust ...not your wings lift..
there was no way you could save it becouse of no airflow in ailerons for corection...
in case you want to get a new hawk p.m. me to see what i can do
forgive my bad english
i build mine to last so doors are closed when gear is down...i just dont have time for repairs after im done with a jet...
Thomas take a look at the photos of "POWERJET" to see what i advised him..it works well and we use all servo throw for better resolution
yes manual for the elevator is not good
if ill ever build a hawk again ill go with a single hitec 7955 on the elevatore so ill save the nose waith...still overkill.
\
also when you glue the horns in ailerons /flaps/rudder use hysol and make sure you lots of it in the hole so you create a good suport.
no there is no need for wood..you can always overbent gently the sufrace so to reach the fromt part of the horn unterneath to hysol it too
perche
im so sorry for your loss
your bad runway gaved "up" input incidence to your hawk and you tookoff from your engine thrust ...not your wings lift..
there was no way you could save it becouse of no airflow in ailerons for corection...
in case you want to get a new hawk p.m. me to see what i can do
forgive my bad english
12-20-2009, 07:28 PM
#235
RE: Skymaster plus 1:5.5 BAE Hawk
Thanks Del Gato,
Yes, all the pictures that I have seen of the model seem to run with the gear doors up while the main gear are down- unlike the full scale. I will go that route, I also like your idea of 1 servo on elevator to save nose weight. I have 2 8711's to hang back there but, will now consider using only one.
Thomas, sorry about your Hawk crashing on maiden. I hope you find a better runway for the next one, you definitely bounced into the air without enough ground speed and stalled.
Regards,
Mike
Yes, all the pictures that I have seen of the model seem to run with the gear doors up while the main gear are down- unlike the full scale. I will go that route, I also like your idea of 1 servo on elevator to save nose weight. I have 2 8711's to hang back there but, will now consider using only one.
Thomas, sorry about your Hawk crashing on maiden. I hope you find a better runway for the next one, you definitely bounced into the air without enough ground speed and stalled.
Regards,
Mike
12-20-2009, 07:32 PM
#236
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RE: Skymaster plus 1:5.5 BAE Hawk
Yupp...bad runway...and a pretty stupid pilot...i had 2 futaba Bls 152 on the elevator on that one..overkill.
So you think 1 hitec 7955TG will do the job? I have a new hawk now, and i`m working on the elevator. Have a Merlin 90, so weigth isnt a big problem.
Thomas
So you think 1 hitec 7955TG will do the job? I have a new hawk now, and i`m working on the elevator. Have a Merlin 90, so weigth isnt a big problem.
Thomas
12-20-2009, 08:44 PM
#240
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RE: Skymaster plus 1:5.5 BAE Hawk
So, guys let me know what you think...
If i use only one Hitec 7955TG, i have no rubbing problem And dont have to cut the horn. I could put a carbon tube on the outside on the pushrod, and use a Swb alu horn on the servo.
Good or bad? Remember, i dont have a big engine in it, using a merlin 90.
Thomas
If i use only one Hitec 7955TG, i have no rubbing problem And dont have to cut the horn. I could put a carbon tube on the outside on the pushrod, and use a Swb alu horn on the servo.
Good or bad? Remember, i dont have a big engine in it, using a merlin 90.
Thomas
12-21-2009, 06:24 AM
#241
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RE: Skymaster plus 1:5.5 BAE Hawk
Hi Perche.
I'm going for 1 BLS152 servo on the elevator. I think that two strong servos are really overkill on this plane.
Lars
I'm going for 1 BLS152 servo on the elevator. I think that two strong servos are really overkill on this plane.
Lars
12-21-2009, 09:29 AM
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RE: Skymaster plus 1:5.5 BAE Hawk
ORIGINAL: larshkj
Hi Perche.
I'm going for 1 BLS152 servo on the elevator. I think that two strong servos are really overkill on this plane.
Lars
Hi Perche.
I'm going for 1 BLS152 servo on the elevator. I think that two strong servos are really overkill on this plane.
Lars
I have tried the bls 152...but there is loads of slakk in it..i dint get it good even with two..
Thomas
12-21-2009, 04:48 PM
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RE: Skymaster plus 1:5.5 BAE Hawk
ORIGINAL: perche
Hi Lars!
I have tried the bls 152...but there is loads of slakk in it..i dint get it good even with two..
Thomas
ORIGINAL: larshkj
Hi Perche.
I'm going for 1 BLS152 servo on the elevator. I think that two strong servos are really overkill on this plane.
Lars
Hi Perche.
I'm going for 1 BLS152 servo on the elevator. I think that two strong servos are really overkill on this plane.
Lars
I have tried the bls 152...but there is loads of slakk in it..i dint get it good even with two..
Thomas
Now I'm getting worried.
Lars
12-21-2009, 05:29 PM
#244
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RE: Skymaster plus 1:5.5 BAE Hawk
Hi Guys, I've just got my self a SM hawk- thanks santa!
I'm looking at running a P120 and was wondering what fuel capacity would be comfortable for this model-
I've just measured the standard factory tanks and found them to be at 4 ltrs. (Main-2.7 small 1.3)
To be honest I'm going to run the main tank upside down / new drain etc, and may run a smaller Dubro or somthing- just wondering about capacity- Any thoughts?
Cheers Guys
Ants
I'm looking at running a P120 and was wondering what fuel capacity would be comfortable for this model-
I've just measured the standard factory tanks and found them to be at 4 ltrs. (Main-2.7 small 1.3)
To be honest I'm going to run the main tank upside down / new drain etc, and may run a smaller Dubro or somthing- just wondering about capacity- Any thoughts?
Cheers Guys
Ants
12-21-2009, 06:11 PM
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RE: Skymaster plus 1:5.5 BAE Hawk
Hi Ants:
Is that the 1/4,3/4 looks small it must be were you have it setting I want one two
How is the detail did they sand the rivits down or do they look good
Dave
Is that the 1/4,3/4 looks small it must be were you have it setting I want one two
How is the detail did they sand the rivits down or do they look good
Dave
12-22-2009, 07:15 AM
#247
RE: Skymaster plus 1:5.5 BAE Hawk
ORIGINAL: dubd
Any danger in doing full power passes with a P-160SX?
Any danger in doing full power passes with a P-160SX?
anyway why to do that? ...i use a p160sx in mine but i only use the full power for upheel or going out from stall and take off....
fly it scale.
[youtube]http://www.youtube.com/watch?v=FgB7Rw7NOFY[/youtube]
12-23-2009, 05:27 PM
#248
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RE: Skymaster plus 1:5.5 BAE Hawk
Hi i get my new Hawk colour scheme below end of January, have been following this post for a little while now and can see 2 ways of mounting the Rudder servo, 1 is in the fin itself on a ply plate which is then glued in place and the 2nd is the place the servo into the fuz itself and have the fin / rudder fit over the top of the servo, is there any bennifits from one or the other and also i see some mention that only one servo like the 7955TG can be used instead of 2 as per instructions on the elevator, has anyone done this or is it best still to go with 2. Any other info i may need please just let me know.
Regards wichet
Regards wichet
12-23-2009, 06:11 PM
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RE: Skymaster plus 1:5.5 BAE Hawk
ORIGINAL: wichet
Hi i get my new Hawk colour scheme below end of January, have been following this post for a little while now and can see 2 ways of mounting the Rudder servo, 1 is in the fin itself on a ply plate which is then glued in place and the 2nd is the place the servo into the fuz itself and have the fin / rudder fit over the top of the servo, is there any bennifits from one or the other and also i see some mention that only one servo like the 7955TG can be used instead of 2 as per instructions on the elevator, has anyone done this or is it best still to go with 2. Any other info i may need please just let me know.
Regards wichet
Hi i get my new Hawk colour scheme below end of January, have been following this post for a little while now and can see 2 ways of mounting the Rudder servo, 1 is in the fin itself on a ply plate which is then glued in place and the 2nd is the place the servo into the fuz itself and have the fin / rudder fit over the top of the servo, is there any bennifits from one or the other and also i see some mention that only one servo like the 7955TG can be used instead of 2 as per instructions on the elevator, has anyone done this or is it best still to go with 2. Any other info i may need please just let me know.
Regards wichet
12-23-2009, 06:44 PM
#250
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RE: Skymaster plus 1:5.5 BAE Hawk
Hi Wichet,
just received my Hawk- see above pix, I decided to mount my rudder servo
(Hitec 5645) in the the fuz- just seemed like the better way- accessibility wise
Also decided on two JR DS8711 Servos for the tail plane- from troy build models (Best price)
Ants
just received my Hawk- see above pix, I decided to mount my rudder servo
(Hitec 5645) in the the fuz- just seemed like the better way- accessibility wise
Also decided on two JR DS8711 Servos for the tail plane- from troy build models (Best price)
Ants