Originally posted by gooniac33
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Freewing 80mm F-5E Tiger II
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Originally posted by Phantom View PostThought I'd throw this on here for those who would like to increase the flight time on the 80mm F-5E. Hobbystar 4200mah 6s 40c's are incredibly light and with 8400mah's on board 6 minute flight times are the norm. Landing with 3.8volts per cell. If you prefer to fly her with the 4000mah 6s batteries, then maybe this isn't for you, but I can't tell the difference between a 5000mah 6s, and a pair of 4200mah's in the air.
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Thought I'd throw this on here for those who would like to increase the flight time on the 80mm F-5E. Hobbystar 4200mah 6s 40c's are incredibly light and with 8400mah's on board 6 minute flight times are the norm. Landing with 3.8volts per cell. If you prefer to fly her with the 4000mah 6s batteries, then maybe this isn't for you, but I can't tell the difference between a 5000mah 6s, and a pair of 4200mah's in the air.
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Originally posted by Apache Jets View PostKeep up the good work and advice Gooniac33... I have had my F-5 for about 3 1/2 years now, I have another one that I am modifying to a F-5b or a t-38. I am thinking about going with the fan swap to the FMS like you suggest since it's already in the shop. I started with a brand jet in the Swiss scheme since I plan on a new paint job anyway, didn't want to deal with the all painted version.
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Keep up the good work and advice Gooniac33... I have had my F-5 for about 3 1/2 years now, I have another one that I am modifying to a F-5b or a t-38. I am thinking about going with the fan swap to the FMS like you suggest since it's already in the shop. I started with a brand jet in the Swiss scheme since I plan on a new paint job anyway, didn't want to deal with the all painted version.
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I just ordered a Plush, it comes with BEC, do you use the onboard BEC in yours or a separate BEC?
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Thanks. Yes, yours is the one I have seen and yes it blew my mind! I basically want what you got. Good job on that BTW. I ordered Hobby Star 5200 45C packs yesterday they are light. I flew with the stock fan today, heavier 6s 80C TP packs. Fly for four minutes and landed with 40%. So it is not a power hog. I agree that lower C rated packs will be fine in this one. I have some smaller HK Plush ESC's and they work well so that sounds good.
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Originally posted by Husafreak View PostGot a bunch more flights on my F-5 and really loving it. I like it so much that I ordered the FMS 80mm fan combo for it. Funny way of thinking really, it flies so well stock that I think it is worth the upgrade. I've seen it fly with the FMS too. I'll have to pick out a 100A ESC to have some headroom. Anybody want to suggest a nice light 6s 100A ESC? I'll run a separate CC 10A BEC.
Also I used a plush 100amp esc from Hobby King in mine
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Got a bunch more flights on my F-5 and really loving it. I like it so much that I ordered the FMS 80mm fan combo for it. Funny way of thinking really, it flies so well stock that I think it is worth the upgrade. I've seen it fly with the FMS too. I'll have to pick out a 100A ESC to have some headroom. Anybody want to suggest a nice light 6s 100A ESC? I'll run a separate CC 10A BEC.
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Originally posted by Husafreak View PostMaidened the F-5 today. Got 6 flights in at LFE. First 5 in dead calm. Fantastic little jet. All stock with a variety of 6s 5000mAh packs. Four minute flights coming down with 35% or better. CG on aft seam of wing bolt plastic plate. Very stable, pretty fast, can slow down too, great climb, good power stock. Most takeoffs were with 1/2 flaps, rotates easily. Tried flaps up takeoff, needed full up to unstick and then it jumped into the air, so I much prefer takeoff with flaps. Landings were all 1/2 flaps. no issues, needed to mix down elevator into flaps, not much 1 and 1 1/2mm but without it I was having to push the nose down (on the first landing). I did power on and power off landings, both with ease. Mine does want to balloon with throttle off, 20% to 100% throttle it is in trim but if I cut power completely when in flight and cleaned up it starts a gentle climb and gets too slow. A little strange, maybe a CG thing but honestly I like the CG right where it is. I don't want to mix down elevator into throttle off so I'll live with it. Very little down needed for inverted flight and it knife edges pretty well. And did I mention that it is beautiful in the air! And that it flies like it's on rails? I love this little hot rod!
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Maidened the F-5 today. Got 6 flights in at LFE. First 5 in dead calm. Fantastic little jet. All stock with a variety of 6s 5000mAh packs. Four minute flights coming down with 35% or better. CG on aft seam of wing bolt plastic plate. Very stable, pretty fast, can slow down too, great climb, good power stock. Most takeoffs were with 1/2 flaps, rotates easily. Tried flaps up takeoff, needed full up to unstick and then it jumped into the air, so I much prefer takeoff with flaps. Landings were all 1/2 flaps. no issues, needed to mix down elevator into flaps, not much 1 and 1 1/2mm but without it I was having to push the nose down (on the first landing). I did power on and power off landings, both with ease. Mine does want to balloon with throttle off, 20% to 100% throttle it is in trim but if I cut power completely when in flight and cleaned up it starts a gentle climb and gets too slow. A little strange, maybe a CG thing but honestly I like the CG right where it is. I don't want to mix down elevator into throttle off so I'll live with it. Very little down needed for inverted flight and it knife edges pretty well. And did I mention that it is beautiful in the air! And that it flies like it's on rails? I love this little hot rod!
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Thanks gooniac33, I agree. Mine is ready to fly with the stock fan. Waiting for better weather!
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Originally posted by Husafreak View PostHow many amps does the FMS 80mm 2000kv fan pull? Is the stock 80A ESC capable?
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I've stripped the heads on several grubs screws with only blue thread locker. Now I heat them up first. Can't hurt.
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Originally posted by crxmanpat View PostSo the "little black thing" you're talking about is called a grub screw. If they do not have a thread locker applied at the factory, then yes they can come loose after just a few flights and is nothing unusual. Landing gear tightness is something I usually check during pre-flight when I put the gear down after arriving at the flying field.
The fix is to use a small amount of Loctite to secure the grub screws in place. CAUTION! Loctite will degrade plastic, so make sure you only use it on metal to metal applications (should be fine for all landing gear). You want to get the Loctite Thread Locker Blue 242.
If you need to remove the grub screws in the future, take a soldering iron and heat up the grub screw for a minute to loosen the thread locker, and then it should come out.
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