RunRyder - Cooling system for Eco 8

rrTV-PHOTO

New HD TV

HOME rrTV-PHOTO GALLERIES MY GALLERY HELP-FAQ

myHOME PM pmRR MEMBERS 482 ONLINE 44 EVENTS SEARCH REGISTER START HERE

1 page

2029 views

POST REPLY

Midland Helicopters	.	HeliProz	.	ZoomsHobbies
	.		.

e-Ikarus Piccolo-Eco 8/16 > Cooling system for Eco 8

skypup
Senior Heliman
Location: San Antonio, Texas

This post concerns cooling down the mega 22/30/3H motor in my Eco 8 heli. I am running the motor with a 17t pinion on a 3 cell lithium
battery. I ran down to radio shack and bought a 12 v DC Micro Fan part # 273-240. I installed the fan by mounting it with small tie wraps directly to the heat sink which is secured with larger tie wraps. Electrically I put the fan on a seperate mini toggle switch and wired it into the esc and battery plug. In addition, I cut cooling openings on the sides and top of the stock canopy (see pics). I went out this morning and hovered only for 10 minutes to test the system and am very happy with it. After the flight the motor was much cooler than previously and I was able to touch the motor without getting burnt. I am now comfortable with the way it's working. The only drawback is the fan draws some power from the flight pack but its current is 130 mah. The fan is rated for 20,000 hours of continuous operation and is lightweight (I forgot to weigh it before installation). With that low fan current draw I am seriously thinking of puttin another on the opposite side of the cooling fins. With this system and the installation of my new spectrum radio system I have the best glitch free set up ever. I have had this heli for years and parked it after having glitches which I could not identify.....until now

Bob Fritch
San Antonio

SKYPUP

01-30-2006 Over year old.

Superman217
Senior Heliman
Location: Redlands, CA

Thats cool. How many minutes of flight do you get with your Lithium?
Is it a 3S2P or 3S3P? I have the same motor with a rc buggy heatsink (large) and a fan from a video card mounted to the extra part of the shaft. I had pictures, but I can't find it. I'm going to have to take new ones. Anyway, I'm thinking about getting a lithium for as part of the upgrade I'm going to be doing for my ECO and I would like your input on how the Lithiums make it fly. I'm currently using a 10C with a 17t pinion and when I'm feeling jazzed I put my 11C on there and it's still not burning the sH## out of me, but it's hot.

Kevin G.

01-30-2006 Over year old.

skypup
Senior Heliman
Location: San Antonio, Texas

I flew the Eco 8 yesterday to run a test. I used an old TP 7800 mah 3s4p pack. I ran (2) 10 minutes flights which were mostly hovering and (1) 5 minute flight where I flew around. I replaced 5678 mah back into the pack. That calculates into 227 mah/minute. If I use 7000 mah I should get 31 minutes of flight time. I did add a second fan on the opposite side and it works great.

SKYPUP

01-30-2006 Over year old.

Superman217
Senior Heliman
Location: Redlands, CA

Sounds cool. That 8000 pack is very expensive. I might have to get the 3S2P TP4000 11.1v It's cheaper and about 400 grams less than my 10C pack and 1 volt lower so it will be lighter and cooler so I should be able to do some pretty cool moves. I should fly for at least 20 or so minutes because of the less weight and the higher mAh.

I'm just going to have to keep my Lap Top with me to change the Programing on my PHX45. They have different setting for Litihums and ni-mh. Well, thanks for your input and have a great day.

Kevin

01-30-2006 Over year old.

skypup
Senior Heliman
Location: San Antonio, Texas

Superman

I have the 4000 pack also. The lighter weight makes it nice for lifting payloads.

SKYPUP

01-30-2006 Over year old.

Superman217
Senior Heliman
Location: Redlands, CA

cool, water balloon drops.

01-30-2006 Over year old.

Superman217
Senior Heliman
Location: Redlands, CA

MY COOLING

03-26-2006 Over year old.

Brett Sumpter
Heliman
Location: Roswell, GA

My setup is like Superman217's - that's the whole point in getting the 3H, having the extended shaft for the fan. Made a big difference for me, especially when carrying extra weight (did some test runs flying on 10 cell NiMH carrying an extra 10 cell pack, 44+ ounces of battery)...

03-30-2006 Over year old.

Superman217
Senior Heliman
Location: Redlands, CA

Cool Brett. So what tooth pinion are your running with your 22/20/3H and 10c? Have you tried it with Lithiums yet? I'm thinking about going to lithiums, but I'm not sure how many volts the Mega 22/20/3H can handle. A normal battery has 1.5 volts, so a 10C pack would be 15 volts, but a NiMh GP3300 pack has 1.2 volts so a 10c pack is 12 volts. So if I go lithium, should I get the 11.1 volt 3S2P pack or should I get the 14.4 volt 4S2P pack?

Crazy huh.....

KG

03-31-2006 Over year old.

jrvander
Senior Heliman
Location: Mystic, CT

my setup

Supe, I've got the 22/20/3H with a 16t pinion and 3S2P 5000 mAh LiPos. I'm getting a comfortable 15 minutes of flight time at a constant hover(which uses more juice than FF) without taxing the battery too much and the motor does get warm, but not hot. Head speed is 1675 rpm. I have a Kontronik heat sink but no cooling fan yet. LiPos are nominally rated at 11.1v but they acutally put out around 12v under load. I'm planning to buy an in-flight data recorder soon so I'll have a better idea of what I'm running during different flight conditions.
I don't know if the Mega can handle 4S power, might get really hot and cook, hard to say. The people at Mega might be able to help, but there's a language barrier unless you speak Czech. Their website:

http://www.megamotor.cz/new/script/...969781fbd593dba

It says its rated for 6-27 cells which is a little difficult to believe; 27x1.2=32v. Might be worth a try however.

- Jon

Jerry wins!

03-31-2006 Over year old.

Superman217
Senior Heliman
Location: Redlands, CA

english Version. =)

http://www.megamotorusa.com/

http://www.megamotorusa.com/Brushle...20-3H.htm?id=24

03-31-2006 Over year old.

Brett Sumpter
Heliman
Location: Roswell, GA

I'm running a 14 tooth pinion with 10 cells, headspeed in the 1400 rpm range - using semi-symmetrical fiberglass blades there's plenty of lift, no 3d flying for me. Looking at going to 3S LiPo power eventually, but I just cringe when I look at the cost because I need a new charger too...

04-01-2006 Over year old.

jrvander
Senior Heliman
Location: Mystic, CT

blades

I have symmetrical MAH 463 blades running at high speed to help keep it stable and responsive in the wind. Around here 5-10 mph winds are the norm, yesterday it was 10-20 and gusting. I'm nowhere near 3D flying at this point(except on the sim!). Kinda highlights how important set up is for each person's stlye and conditions. I might try some semi-symm blades tomorrow if the weather is light enough.
Chargers are spendy, especially when you get into high capacity units that do 6S and greater. I have a Multiplex LN-5104 that I'm really pleased with that does up to 5S and NiMH, NiCad, Pb, etc. It ran about $75. You can make a switching power supply from an old computer power unit that puts out 5-10 amps at 12-15v. For the field I have a car lighter plug-in that is fused for 10 amps, $10 at Radioshack. I don't know if that helps or not.
- Jon

Jerry wins!

04-01-2006 Over year old.

stevehickey6
Heliman
Location: rotherham,south yorkshire,england

hi all looking for some advice

i have just purchased a mega 22/20/4 brushless motor for my eco 8

after i ordered i noticed online there is also a 22/20/4h

is the h stand for helicopter ?

have i baught the wrong unit and what is the difference ?

now for my battery question

i have a small lipo for my walkera 36

its a 3cell 1800mah 10c 11.1v battery

i keep seing mention of 3s lipo for use with eco 8 but not certain

if this will be ok for eco 8

is it possible to join 2 packs of the above batterys together to give me a total of 3600mah still at 11.1v ?

i do not want to have to buy a specific battery for eco 8 but would if possible buy 2 lipos for walkera 36 or that will work in my walkera 36 my trex and by joining together then use in eco 8

any advice on what i should buy to do this much appreciated

Raptor 50,Eco8 stock, Eco 8 moded,Eco 8 jetranger, Trex 450s, Walkera #36, Aerohawk, Esky honeybee

07-06-2007 Over year old.

HOMEPAGE

stevehickey6
Heliman
Location: rotherham,south yorkshire,england

hi thanks for your help much appreciated

i was thinking of upgrading my walkera 36 battery to something higher mah and c rating

can you please explain the s at end of this

3s 20c 2100 s is it another thing like mah like on nimh batterys ?

yes also i was thinking of deans plugs idea to join them make a flying lead up kind thing then can use the batterys for all my hellis

i used to know this is paralell when all battery positives go to gether and all battery negatives go together ?

or when positive goes to negative and so on till end of pack
like batterys in a torch ?

i was going to use 2 lipo packs and make a lead with 2 deans on one end joined by 1 dean on other and joining positive from one battery to positive on other

and do same with negatives
leaving just a positive and negative to join to speed control

is this correct

i dont want higher voltage just longer lasting time

thanks
again
steve

Raptor 50,Eco8 stock, Eco 8 moded,Eco 8 jetranger, Trex 450s, Walkera #36, Aerohawk, Esky honeybee

07-06-2007 Over year old.

HOMEPAGE

Scott99
Heliman
Location: Nelson, New Zealand

4 cell in Eco 8

Hey there guys, I have the following:
Eco 8 carbon frames, alloy main bridge with front support.
original H8 motor with Phx45 ESC.
Stock head and swash.

I plan to do a scale project consisting of a JR Voyager E Ecureuil (Squirrel) body shell, with some pay load lifting ability.

Questions:
Given the many gear ratio options, would 4 cell packs be too much?

(correct me if I'm on the wrong track but I'm thinking that I should be able to gear down to achieve something like 1800 on the head and use governor mode, this would mean long flight times with lower amp draw meaning cooler running in general with weight of 4 cell packs not being a big issue even at 4000MAH?)

I have found that when lifting loads on a strop that the if the overall mass of the heli is low the heli is all over the place in the hover even tho it has the power to lift the load, meaning that the difference between weight of model and weight of load has a bearing on hover stability.

(Although @ 1600 on the head I more than likey had way to lower head speed and possibly some servo lag under load...)But it is still desirable to have the AUW heavier for lifting on a strop hence the query on 4 cells @ around 4000MAH @ something like 4-500gms

I have HS81s on ccpm. I would like to up grade these - would HS85BBs be the ones to go for without stretching to a digital?

Would the stock swash be up to the job considering there will be no 3D?

07-06-2007 Over year old.

Scott99
Heliman
Location: Nelson, New Zealand

Eco on 4cell

Yeah thanks Willy, yes I have the tail sorted re hardnened screws and thrust races, also fitted a thrust under the top block on the mainshaft to take the load off the top radial.
401/9254 worked great - it would be nice to get a smaller tail servo weight wise, but there isn't a lot out there fast enough to hold really well, particularly in this case as I have shortened the boom using a Kyosho concept EP tail belt to achieve main mast and tail positions within fuse but still able to run 475 blades - just need the gyro/servo to be up to the mark, hence a tad downwash interference onto tail rotor.

Yes, my aim will be only enough head speed to do the job - not interested in thrashing it, more interested in flight time and reliablity, hence the 4 cells and gearing to suit and using slow start and governor mode.

HS85s ok without going overboard with expensive digitals - but still an improvement on HS81s?

07-07-2007 Over year old.

1 page

2029 views

POST REPLY

HeliHobby	.	Ron’s HeliProz South	.	Century Helicopter
	.		.

e-Ikarus Piccolo-Eco 8/16 > Cooling system for Eco 8

UPDATE SCREEN PRINT TOPIC

Advertisers

Subscribe to This Topic