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RE: Seagull Models EP Extra 300 - 10/5/2006 4:06:24 PM   
Jimmy Hoffa



Posts: 459
Joined: 1/12/2005
From: Orlando, FL, USA
Status: offline 		The HS 55's have more throw than the S 75's.
Phillip

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RE: Seagull Models EP Extra 300 - 10/5/2006 4:58:26 PM   
aflipz


 

Posts: 934
Joined: 7/2/2005
From: Montreal, QC, CANADA
Status: offline 		Just curious get real, as a servo afficionnado, have you tried the dymond D47's?

the specs are pretty much the same as hs65's (minus 1oz/in tq and 0.02 seconds faster) except it weighs 4.7grams. They are plenty fast, the onli disadvantages i can see is the gears must be weaker (though i have yet to strip one of my many d47's after 100's of flights) and that they don't have ball bearings so they can't be as durable. Also the arms are tiny and need to be extended. (short wires too, but i like soldering extensions just the right length for weight savings)

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       Post #: 77

RE: Seagull Models EP Extra 300 - 10/6/2006 7:43:22 PM   
Get Real



Posts: 532
Joined: 8/4/2005
From: Monee, IL, USA
Status: offline 		no servo expert here/didnt think they would make as big of a differance as they do in planes. when i ran cars in competition they made a huge differance and they do with planes to with 3D flying but are noticable as well in regular flying.. i probally didnt notice the differances because last year i didnt try much 3D/the servo's you described are not carried locally here. the only thing i see coming into play is the gears and not having a bearing. the transit time and torque are very close and the weight savings is nice.

on servo travel.. the strange thing is on my standard radios travel is limited.. using the exact same servos with a computer radio with end point adjustments gives the servo a very noticable amount of differance in travel/you would think travel wouldnt be limited when using different radios/just the ability for dual rates and limiting travel on low rates. ive only used the dx6 and a futaba 6 cahnnel computer radio so this may vary with different brands. when i get a chance i have both servos hs 55s and the specktrum ones.. same as s 75s and i can check on differances in travel between them/didnt notice any differance in throw when i ran the two/but i change set ups quite a bit and i havent used the included spektrum servos much.

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RE: Seagull Models EP Extra 300 - 10/6/2006 9:41:37 PM   
BadBoy__MadMikey


 

Posts: 303
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		speaking of servos. have ya'll heard about the new Jr mini digitals?? 285's??? i flew a QQ yak of Eric Myers earlier this year that had them and WOW!!! very smooth, fast and percise!!! i could tell a huge diffrence in them. i'm fixing to pick up 4 of them, not sure if i will put them in my brio or the extra. i took the gear from the brio for the extra but i think the extra will be a better tool for me, cause i fly imac and it's so much closer to my large extra and having it respond as great as my larger digital servos maybe the answer.. the only draw back is the price, tey are $34 each!!!! ouch!!!!


mikey

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RE: Seagull Models EP Extra 300 - 10/7/2006 12:08:31 AM   
aflipz


 

Posts: 934
Joined: 7/2/2005
From: Montreal, QC, CANADA
Status: offline 		i tried some ds281 in a touring car and in a rc truck with good results, did strip some gear. I prefer the D47's though.

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       Post #: 80

RE: Seagull Models EP Extra 300 - 10/11/2006 3:23:32 PM   
3DHobbyShop


 

Posts: 19
Joined: 5/13/2005
From: Fredericksburg, TX, USA
Status: offline 		We built a Seagull Extra with a TORQUE 2818-900 motor and AirBoss 35A esc (equipment from an ExtremeFlight Extra). To mount the motor, we didn't use either of the extended mounts, we just bolted the motor to the firewall and trimmed the cowl back about 1/2". Easier to get CG with the larger motor that way, anyhow.

HS-65 servos, Berg Rx, 3S 1800 20C Hyperion pack, APC 13x6.5 E prop.

Flight performance was great, weight was in the high 30's, power around 370W. The plane is very capable and a nice 3D flyer.

We pumped it up by adding a Medusa 6V BEC and going to a 4S 1800 20C Hyperion pack. This required propping down to 12X6E APC. Power was about 570W. The 1800 pack struggled a bit with the 12X6 prop during sustained full throttle, but that's not neccessary with this much thrust. Used in bursts, the power was awesome.

We sold the airplane and the new owner equipped it with a bigger 4s pack, and suddenly it made over 700W..too much for the esc and probably the motor. He backed down to an 11x5.5 prop and upped the ESC to an AirBoss 45 and has been flying the airplane for a couple of weeks.

So far, no structural problems, even at this power level. It's a good airplane, and a great value.

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RE: Seagull Models EP Extra 300 - 10/11/2006 3:26:15 PM   
BadBoy__MadMikey


 

Posts: 303
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		i thought i was sick for putting the power 10 in mine but that set-up is sick, whats next put a mini turbine in??? lol lol

mikey

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       Post #: 82

RE: Seagull Models EP Extra 300 - 10/11/2006 4:33:28 PM   
aflipz


 

Posts: 934
Joined: 7/2/2005
From: Montreal, QC, CANADA
Status: offline
quote:

ORIGINAL: BadBoy__MadMikey

i thought i was sick for putting the power 10 in mine but that set-up is sick, whats next put a mini turbine in??? lol lol

mikey


funny you should say that; the power 10 actually has slightly higher weight, continuous and burst ratings, why is this sicker than yours?

(in reply to BadBoy__MadMikey)
       Post #: 83

RE: Seagull Models EP Extra 300 - 10/11/2006 10:13:02 PM   
BadBoy__MadMikey


 

Posts: 303
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		running 4 cell!!! i'm running a 3 cell with a 12x6, i was pulling 50 amps and 530 watts for 20 seconds and still didn;t amp out!!! i'm running prolite 2100's and after seeing 50amps it worried me so i proped it down to a 11x5.5. never checked amps after proping it down, but flight times increased some and really didn;t lose any power or vertical. you said your weight is in the hi 30's in weight, mine with battery is only 31 ounces!!!

mikey

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       Post #: 84

RE: Seagull Models EP Extra 300 - 10/11/2006 11:38:27 PM   
aflipz


 

Posts: 934
Joined: 7/2/2005
From: Montreal, QC, CANADA
Status: offline 		Oh, yeah that...

His loads must be lower on 4 cells than yours would be with the same pack/prop, he does have a motor that's trying to spin 200 rpm's less for each volt compared to yours. (1100kv vs 900)


I find myself wanting more power now It's good, but it's not spectacular, i want to break out in uncontrollable evil laughter from 50% throttle and up!

(in reply to BadBoy__MadMikey)
       Post #: 85

RE: Seagull Models EP Extra 300 - 10/12/2006 4:35:48 AM   
Rush7



Posts: 700
Joined: 11/8/2004
From: Chattanooga, TN, USA
Status: online 		I put the Tourque motor and Airboss ESC in mine. Running a 12x6E APC with TP2100 Prolite mine is pretty insane. Great vertical and unlimited power I find that I fly at 1/4 to 1/2 throttle and hit WOT just for a second or two here and there to set the plane up for a manuver. Wall to hover. Blip the throttle when you hit the wall and this things stands straight up and hangs.
I love this setup, wouldn't change a thing. Still keeps it light on landing....

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RE: Seagull Models EP Extra 300 - 10/12/2006 4:04:24 PM   
aflipz


 

Posts: 934
Joined: 7/2/2005
From: Montreal, QC, CANADA
Status: offline 		Nice,

i'm thinking of uber exagerating... using a motor designed for the ef yak 47" in the seagull, but down propping it to something more reasonnable, this would yield best motor efficiency and it would give me awesome power without breaking a sweat.

that way down the road when my planes keep getting bigger and bigger i can start pushing the same motor a bit higher to maintain good power to weight ratios.

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       Post #: 87

RE: Seagull Models EP Extra 300 - 10/12/2006 4:05:38 PM   
BadBoy__MadMikey


 

Posts: 303
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		hey guys,
i came up with a cool way to screw the wing screws in. 1st i trimmed the screws down to just over a half inch. i'm using a flat head bit. one you use in a cordless drill or a screw gun. i'm using one that 1.25" long and king of thick head. beleive it or not, you can tighten the screws just with your fingures and there good and tight,, with the screws being a bit shorter, it works great!!!! been trying to find out what size they are so i can get some metal allen head screws so it will be alot easier t tighten them.

mikey

< Message edited by BadBoy__MadMikey -- 10/12/2006 4:16:24 PM >

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       Post #: 88

RE: Seagull Models EP Extra 300 - 10/12/2006 4:11:42 PM   
BadBoy__MadMikey


 

Posts: 303
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		you guys should take a good look at the power 10 outrunner by eflite. i figured up how many ounces of thrust it was putting out a while back. on the 12x6e was getting 86 ounces of thrust and on the 11x5.5e i'm getting around 73 ounces of thrust. now thats some raw power!!! and getting 7 to 8 minutes of flight on a 2100 3 cell tp prolite!!!

mikey

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       Post #: 89

RE: Seagull Models EP Extra 300 - 10/12/2006 4:41:16 PM   
aflipz


 

Posts: 934
Joined: 7/2/2005
From: Montreal, QC, CANADA
Status: offline
quote:

ORIGINAL: BadBoy__MadMikey

hey guys,
i came up with a cool way to screw the wing screws in. 1st i trimmed the screws down to just over a half inch. i'm using a flat head bit. one you use in a cordless drill or a screw gun. i'm using one that 1.25" long and king of thick head. beleive it or not, you can tighten the screws just with your fingures and there good and tight,, with the screws being a bit shorter, it works great!!!! been trying to find out what size they are so i can get some metal allen head screws so it will be alot easier t tighten them.

mikey


that's how i allways did it, cut em short and used a short bit to tighten it, you can get it more than tight enough that way. I have no intention of replacing them with metal though, seems like usless weight to me because it's screwing into plastic anyway so no need for something tougher... I guess my wing tube being glued in reduces movement and reduces the play thus the screws don't loosen at all. The screws are real easy to cut too, i did it with a pair of kitchen scisors!

(in reply to BadBoy__MadMikey)