Originally posted by Hemidoo
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Official Freewing 90mm T-45 Goshawk Thread
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Originally posted by Darrellmims View PostWell today was the day to get mine in the air for the first time and it didn't happen . I couldn't get enough speed to get the nose in the air ,it was not accelerating at all . I put a fish scale one the nose LG and all I could get is 5.8-6.1 Lbs pull .Manual says that it should be closer to 8. Yes I set the throttle on the ESC and tried another battery (60c) .There was a guy saying he did the same thing but I cant find what his was pulling . I fly off grass and it was cut low and a friends A-10 fly's perfectly fine . I will be calling Motion RC and if I don't get a good answer ,I'll trade this for a A-10 !!!
Did you try different flap settings? Or high rate elevator? Did you use the slats? There are several different take-off configurations you can use. I used half flaps and high rate elevator for takeoff. Takeoff roll was still about 350 feet on a "well manicured, grass runway", however, she got airborne.
Of course, if you know the A-10 will fly from your field, that might be a better choice.
Good luck,
Sean
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Originally posted by Hemidoo View Post
Lol . I agree with your style, at times do what works and don't worry about what the "book says"
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I think the grass will be the problem , thing is I've got a plane that I cannot fly . Id have to drive 4 hours to a field that will be good to try it out on .and I'll be going there next week to fly HHAEFI . Yes I tried every setting of Take Off configuration there is , just wont build the speed needed. Lets just say the grass is too thick and too tall , it was cut the day before. And there's about a 1000 Ft of it and 120 Ft wide
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Get a carpet runner of appropriate length... lay it on the grass and instant (very narrow) runway.
Probably not as practical for an EDF model of this size, but it works well for small slow electrics. You'd want a much longer and wider run of carpet, making the portable runway very heavy and a problem for transport and storage.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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My apologies for jumping in, but please continue the issues with power/takeoff as needed. I just finished the build last night and am working with an 8 Channel spektrum radio. I used a 10 channel receiver so that I could utilize a gyro and my tentative plan was to Y the flaps with slats, while the airbrake would be separate. I've been doing some searching but wanted some feedback from the folks here. Basically the servo for the slats is functioning in reverse when attempting to Y with flaps (slats are deployed when flaps are up, and vise versa). I've tried about everything I could think of with the radio, yet still the same result. I've resorted to an in-line servo reverser for the slats as an "easy" fix, but I am hearing there are problems related with these. I figured worst case, I lose the slats and can eventually just replace the servo with a reverse servo if I want to keep with with the flaps.
Any ideas/help here would be appreciated. Thanks gents.
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Originally posted by purduephigam View PostMy apologies for jumping in, but please continue the issues with power/takeoff as needed. I just finished the build last night and am working with an 8 Channel spektrum radio. I used a 10 channel receiver so that I could utilize a gyro and my tentative plan was to Y the flaps with slats, while the airbrake would be separate. I've been doing some searching but wanted some feedback from the folks here. Basically the servo for the slats is functioning in reverse when attempting to Y with flaps (slats are deployed when flaps are up, and vise versa). I've tried about everything I could think of with the radio, yet still the same result. I've resorted to an in-line servo reverser for the slats as an "easy" fix, but I am hearing there are problems related with these. I figured worst case, I lose the slats and can eventually just replace the servo with a reverse servo if I want to keep with with the flaps.
Any ideas/help here would be appreciated. Thanks gents.
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Originally posted by purduephigam View PostMy apologies for jumping in, but please continue the issues with power/takeoff as needed. I just finished the build last night and am working with an 8 Channel spektrum radio. I used a 10 channel receiver so that I could utilize a gyro and my tentative plan was to Y the flaps with slats, while the airbrake would be separate. I've been doing some searching but wanted some feedback from the folks here. Basically the servo for the slats is functioning in reverse when attempting to Y with flaps (slats are deployed when flaps are up, and vise versa). I've tried about everything I could think of with the radio, yet still the same result. I've resorted to an in-line servo reverser for the slats as an "easy" fix, but I am hearing there are problems related with these. I figured worst case, I lose the slats and can eventually just replace the servo with a reverse servo if I want to keep with with the flaps.
Any ideas/help here would be appreciated. Thanks gents.
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Originally posted by Darrellmims View PostI think the grass will be the problem , thing is I've got a plane that I cannot fly . Id have to drive 4 hours to a field that will be good to try it out on .and I'll be going there next week to fly HHAEFI . Yes I tried every setting of Take Off configuration there is , just wont build the speed needed. Lets just say the grass is too thick and too tall , it was cut the day before. And there's about a 1000 Ft of it and 120 Ft wide
I'll also be bringing some spare T-45 parts to sell while at HHAEFI and some 6S demo batteries, in case you're interested.
Hope we get a chance to meet and look forward to getting your T-45 airborne. You can find me at the RC Jetwerx tent.
Sean
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Got the first flight in today and was surprised how well it flew and how nervous I was . Only got about 2 1/2 min flight as the telemetry was squawking 22.6 volts ,Made about 2and a half laps around the field . sure eats up a lot of MaH's in a hurry. Lot of stuff going on for the first flight with no helper . Not enough time to check all the functions ,like the slats /flap , slow flight stuff. Take off w/flaps half , slats down , then clean up the airframe then think about landing . It's not a beginners EDF for sure .
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Originally posted by Darrellmims View PostGot the first flight in today and was surprised how well it flew and how nervous I was . Only got about 2 1/2 min flight as the telemetry was squawking 22.6 volts ,Made about 2and a half laps around the field . sure eats up a lot of MaH's in a hurry. Lot of stuff going on for the first flight with no helper . Not enough time to check all the functions ,like the slats /flap , slow flight stuff. Take off w/flaps half , slats down , then clean up the airframe then think about landing . It's not a beginners EDF for sure .
Be sure to test slow flight characteristics at altitude...she will tip stall if she gets too slow. Also, stay on the power when she's dirty since airspeed will drop quickly with everything hanging out. FWIW, I never used slats or speed brakes in the air, only for the "cool" factor on the ground. I only used half flaps for takeoff and landing.
She is a good flyer...and the more you fly her the more you'll enjoy her.
Sean
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Originally posted by EDFjetpilot View Post
Congrats on a successful maiden! We're you able to fly from your home field?
Be sure to test slow flight characteristics at altitude...she will tip stall if she gets too slow. Also, stay on the power when she's dirty since airspeed will drop quickly with everything hanging out. FWIW, I never used slats or speed brakes in the air, only for the "cool" factor on the ground. I only used half flaps for takeoff and landing.
She is a good flyer...and the more you fly her the more you'll enjoy her.
Sean
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Originally posted by DCORSAIR View Post
I have to tell you, Sean is right about the airspeed drops quickly when down and dirty. I have owned three of these T-45 and have many flights on them, but one day I was doing a long scale approach with everything out including the speed brakes as well, and it slowed down on me faster than I expected and just as I was clearing a chain link fence it decided it wasn't flying anymore, so even after many landings this way, it only took a dumb thumb mistake and dropped it into the fence, so be careful when flying it dirty, other than that it is a great flyer and is now all repaired with many more flights on it and with a little more respect it deserves.:Cool:
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Originally posted by EDFjetpilot View Post
Congrats on a successful maiden! We're you able to fly from your home field?
Be sure to test slow flight characteristics at altitude...she will tip stall if she gets too slow. Also, stay on the power when she's dirty since airspeed will drop quickly with everything hanging out. FWIW, I never used slats or speed brakes in the air, only for the "cool" factor on the ground. I only used half flaps for takeoff and landing.
She is a good flyer...and the more you fly her the more you'll enjoy her.
Sean
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Feeling a little better with the T-45 and adding to the flight time a little. Still 2:40 is very short time and bumping it up to 3:00 is some what better , just not wanting to get too low a voltage . Tried a 5500 60c Gens Ace which is about two ounces heaver ,the take off roll was about 25 Ft longer and climb out was not as steep it seemed to fly just fine .( I had it all the way back in the compartment ) Gear strut doors are not made for grass landing unless they are perfect . Over all it's not a bad performer and looks great on low flybys .
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Originally posted by Darrellmims View PostFeeling a little better with the T-45 and adding to the flight time a little. Still 2:40 is very short time and bumping it up to 3:00 is some what better , just not wanting to get too low a voltage . Tried a 5500 60c Gens Ace which is about two ounces heaver ,the take off roll was about 25 Ft longer and climb out was not as steep it seemed to fly just fine .( I had it all the way back in the compartment ) Gear strut doors are not made for grass landing unless they are perfect . Over all it's not a bad performer and looks great on low flybys .
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Here's my formula for getting more flight time out of the T45, I'm using 6000 mah batteries from HRB. Yes they're a little heavier so I removed the slats and airbrakes to save weight. I'm flying off of a mat runway that's 300 feet long so I've got plenty of space but it still has plenty of get up and go with 1/2 flaps on takeoff and landings are no problem with a little power and 1/2 flaps. This may not work on grass but I'm getting a full 3 minutes with this set up.
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