Large SM Hawk questions
 

I am on the verge of ordering a SM large Hawk and have a few questions for those who have been down this road already..I am planing on the Navy Trainer scheme.
I have read through many of the Hawk threads but thought I would ask the direct questions.

I usually buy the plane with the least done at the factory so that I can inspect/setup things the way I usually do etc...
How have most of you ordered your plane - flaps/ail hinges done? I plan to go with the BV upgrades and metal hinges for the main doors - so I figured I would order it without all of that stuff and do it myself.

I have a 160SX for this - enough?

Lights - who is using what? I have used D4S for other projects but would like a bright nose light and simple install. Is D4S best?

I have never used the Skymaster struts oil/air - do I need anything special to set these up?

Cockpit/pilots - from SM? Seems to be a good deal if bought with the plane?

Thanks in advance,
Dave

RE: Large SM Hawk questions
 

RE: Large SM Hawk questions
 

My plane I my had the landing gear and doors installed. I'm using D43 lights and SM cockpit and pilots. You can see them in this video. Also running a 160... More than enough.


[youtube]http://www.youtube.com/watch?v=C5J-49quZx0&sns=em[/youtube]

RE: Large SM Hawk questions
 

Retract that airbrake before taxing back!!!!! ;);):D

RE: Large SM Hawk questions
 

Thanks for the information, my Hawk is now ordered, Goshawk...

Dave

RE: Large SM Hawk questions
 

I have 10 flights on mine and it was the sweetest maiden flight that I have ever had. There are a few mods that need to be done. Get with me later and I can give you all the info.

Its funny, I nearly contacted you about a possible trade between my Hawk and your A10 for sale. I figured you were looking for cash only.

Joe

RE: Large SM Hawk questions
 

I am in the 9th week of my SM Large Hawk order. Hope to hear somthing soon.

What kind of mods do you think need to be made ?

I am looking forward to it's arrival, but sometimes I wish I had decided on a Tomahawk L-39 after watching many more videos and talking to a few people. But from what I have seen in person with the Hawk, it will be a great flyer. Anyone interested in a Navy Trainer scheme Hawk with everything ?

What size motor are you using ?

RE: Large SM Hawk questions
 

I am running a 160SX and when I was finished building it, I thought it might not be enough. I was wrong. It flys great with 36lbs of blow. The vertical is great too.... not unlimited but more than I thought for sure.

Some mods are fuse opening edges need reenforcement so they don't crack over time. The belly of the fuse needs some CF so that you don't cruch the bottom sitting it on a stand. I replace the hinges with BVM ones. The gaps on the ail and rudder ends need a little attention. Overall, not bad. It makes for an impressive flyer.

RE: Large SM Hawk questions
 

I have heard guys mention about the belly reinforcement and hinges, but not that the edges need to be looked at and the rudder ends. Good info. Thanks. I have a 140 that I plan on using. What do you think ?

RE: Large SM Hawk questions
 

I think it will fly it fine but would prefer 36lb of thrust. Mine is about 41lb dry.

RE: Large SM Hawk questions
 

Wow...... That is heavier than I would have thought.

What kind of field do you fly off? Grass or paved ?

RE: Large SM Hawk questions
 

The p140 is great in the Large Hawk. I am flying at 1800' and 100 degrees. But it is a constant speed jet. According to Wilcox most P140's are putting out 33 -34lbs of thrust. So it is about the same as the Titan was.

RE: Large SM Hawk questions
 

The website says 36lbs dry but the manual says 38 to 42lbs. I do have the wing tanks and wingtip pylons/missles. If you left that stuff off, you may be around 39lbs dry.

I have flown off pavement and use about 400ft but I could use less if I wanted.

I don't think grass wouldn't be too much different. The wheels are large on the Hawk.

I think with your 32lb turbine, you could fly off of 500ft of grass and be ok. Your ascent may be shallow but the rest of the flight would be comfortable.

RE: Large SM Hawk questions
 

Thanks guys, some good info. I do not have any tanks or missles planned on this new Hawk. I have a JC 180 ordered for my present plane because I think I want to be able to get off the grass easier. The 140 was going to be moved over to the Hawk. But I guess I can decide on which engine to put where after I fly both. I will mainly be flying from grass, and it is alittle on the thick side.

RE: Large SM Hawk questions
 

Thanks Joe,

I am putting the 160SX in the Goshawk. I am still looking to sell the A10 though...

Glad to hear the information, thanks for posting!

Dave Dennison

RE: Large SM Hawk questions
 

Mine flew with a P120sx and flew great. Flew off grass too! No problem!!
A hawk doesnt need one to one to fly great. Some guys really like to haul with them though.
Scott

RE: Large SM Hawk questions
 

MINE HAS ARRIVED These are pictures at the factory. have not had time to take some here.

RE: Large SM Hawk questions
 

When did you order your plane ?
Trying to get an idea how much longer on mine.
Thanks.

RE: Large SM Hawk questions
 

About the middle of June. I think it took longer becouse of the paint sceme. It was worth the wait.

RE: Large SM Hawk questions
 

Wow.... I ordered mine the middle of July. I may still have a little wait. Oh well.......... Looks like it will be worth it.

Nice scheme, by the way.

RE: Large SM Hawk questions
 

Just got my red arrows hawk ordered yesterday. So I'm on the hurry up and wait list too.

RE: Large SM Hawk questions
 

I am looking for a servo list to make sure I have everything I need:

Guessing 8711s for aileron(2), flap (2), elev (2) and rudder (1). I plan on using my weatronic so wont use the HV servos.

What size do I need for the nose steering, is it standard size?

thanks!
Dave

RE: Large SM Hawk questions
 

just to clarify, I only was checking on flight surfaces.

Thanks
Dave

RE: Large SM Hawk questions
 

Highly recomend getting BVM supplementary manual. Some good information.

RE: Large SM Hawk questions
 

Hi
Manual is on the way, just trying to figure which servos I will need to include with the final order.

DD

RE: Large SM Hawk questions
 

8711 all the way around on flight controls for me. The nose steering is standard size. I would put an 8411 on it, maybe bigger.

RE: Large SM Hawk questions
 

Congrats on the Hawk. Thats the same model and scheme that I have. This was my first jet and I learned a ton. To start, I LOVE the model. It flies fantastic! Have about 100 flights on it now and just want to fly it more and more. Here are a few lessons I have learned:

- GET the metal hinge upgrade. The hinges on the main doors WILL break over time.
- If there is a metal upgrade available for the actuator attach on the speed board, get it. Mine broke just deploying it on the ground.
- Flap hinges are a pain. I would get them factory done if I got another one.
- I use 8911 all round including nose gear steering.
- The BVM upgrade packages are good. I got all of them ands it made the install pretty easy.
- If you dont get the BVM packages, still get the larger main door cylinders. It needs them.
- JetCat P160sx in mine. PLENTY of power.
- Add come CF strips in the belly in nose and under the turbine so it dosent distort when sitting in a fender stand.
- I agree with adding reinforcement around the edge of the openings in the fuse. Mine has split in a spot. Especially under the opening for the rear hatch above the turbine.
- Getting the rudder to fit snugly on the torque rod can be tricky. I wraped the torque rod with one layer of heat shield tape and it snugs it right up. If you remove the fin, remove and replace the tape.
-SM cockpits and pilots are good. But, the cockpits will distort sitting out in the sun. Add glass cloth or CF under the front and rear lips on the cockpit tubs or they will curl up badly.
- BVM manual is well worth the money.
- Mount the two elevator servos as close together as possible (so arms almost touch) there isnt much space in the fairing (hatch above the servos) for the arms. I found the BVM template for mounting the servos didnt work. Had to move them closer together.

VERY IMPORTANT:

On mine, when the ailerons are aligned with the flaps at neutral, they are slightly drooped at the tip. Not much, but it was enough to make it very tricky to land. A little too much AOA and it would tip stall. I raised both ailerons about 1.5mm at the TE and it became a new airplane. Beautiful to land. Others did the same and found the same result.

RE: Large SM Hawk questions
 

Thanks, Mike.

I have the BVM upgrades on oreder too and will include metal hinge/door cylinder upgrades.

Regarding the TE of the aileron being up 1.5 mm, are you doing this all of the time, or more of a"crow" feature on landing?

Thanks again,
Dave

RE: Large SM Hawk questions
 

Great Tips Mike!
Scott

RE: Large SM Hawk questions
 

My Bae hawk flight.

http://www.youtube.com/watch?v=5mVwNjV3XdM

Enjoy!!!

RE: Large SM Hawk questions
 

My second Flight.

http://www.youtube.com/watch?v=HMupH...p;feature=plcp

RE: Large SM Hawk questions
 

I was just looking at some full scale Goshawk pics and found that the speed brakes are on either side o the aft fuse with a central ventral fin by the arresting hook mount. Anyone know if the Sm version is actually scale with the ventral fins(2) and the single speed brake?

Just curious in case it winds up in any competition etc.

Thanks very much
Dave

RE: Large SM Hawk questions
 

I don't think SM has any version with the side speed boards like the full size Goshawk. Another missed detail is the nose strut and dual nosewheel. I think you will just have a standard Hawk in Goshawk marking.

RE: Large SM Hawk questions
 

The large SM Hawk is only a T45 in color scheme.

RE: Large SM Hawk questions
 

Thanks guys.
Not a big deal, I still love the scheme and it will fly great. Perhaps the mods would be fun to do myself....we'll see.

I read about the history of the Goshawk this AM and it outlines the specific conversion of the side air brakes, full length LE slats, coupled brake/elevator control and some other engine upgrades to deal with the drag for carrier approach.

I keep wondering if someone might make a retrograde double nose wheel that fits into the sky master strut - that would be fun.

I ordered my lights (D4S) so now I just need the plane. I think I am going to try the HV8911 servos - anyone had any trouble going to the HV systems?

I usually fly JR10x/Weatronic by think I might go back to my 12x/1222/HV servos this time around. I am not asking about any brand > other brand, just if those that have used JR HV servos have any trouble? Thanks!

Dave

RE: Large SM Hawk questions
 

Mike mentioned the TE of the aileron being up 1.5 mm, does anyone prefer this all of the time or just on landing, as a mild crow type setting?

Dave

RE: Large SM Hawk questions
 

One more question for the owners of the SM Hawk - if you added CF or other reinforcement to the bottom or around the cockpit frame, did you use epoxy or resin type adhesive? Have some CF tape and was planing on Zpoxy to apply, otherwise I use aeropoxy/Vpoxy for all other joints.

Thanks
Dave

RE: Large SM Hawk questions
 

I'm sure there is some benefit from doing this but I have not heard of it until now. My ailerons are in the neutral position at all times and I haven't had any issues. I just flew it yesterday off a 400ft by 30ft runway and it landed fantastic. I do have the Hawk 100 which has the wingtip caps and pylons. I don't know if this makes a difference or not. I guess you could program a mix or add the aileron change as part of the landing flight mode, if you use flight modes on your radio.

RE: Large SM Hawk questions
 

I used CF cloth and cut a piece that fit the inside of the tub with the side up to about an inch. I used ZAP resin to finish it. It did the job nicely.

RE: Large SM Hawk questions
 

Not that you asked, but this is how I put mine together.