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11-03-2004 02:37 AM  13 years agoPost 1
rcaddition

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military

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ok, I've down some runs with my hv setup. It has a nice heatsink but temps with canopy on are way too high 170plus. I have about 20 holes drilled into the canopy but it doesn't help. canopy off and temps are between 120-140 which is acceptable. I'm thinking about completely cutting away the clear windowshield for max air flow. does anyone know how this will effect flight??

I'm back...God please help me be nice to my wallet!

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11-03-2004 03:53 AM  13 years agoPost 2
Busted Nut

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Winnetka, CA,USA

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Too Mutch Heat
Hello, I understand the following has nothing to do with the windshield but. You can try a small computer cooling fan. They run on 12 volts or 5, but you might want a seperate BEC for it depending on the draw of the fan. On your batterys are they a hard wired ? Use the bec. If your packs joined with a jumper you can tap that voltage for the fan. A freind and I installed one on his LOGO 10 and it helped keep the temps down. We also did some duct work with thin sheet plastic to put the airflow where it would do the most good. They have fans in Ions, helps keep things cool.

With reguards to the windshield I have flowen my EOLO without the canopy and hardly noticed any change in flight, so yes cut it out. My windshield has four large holes in it and no issues with cooling. Large holes are better for airflow then alot of small ones.

Hope this helps, John

Fury,Eolo,9C&401

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11-03-2004 04:04 AM  13 years agoPost 3
rcaddition

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military

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I think I'll cut it out.I've tried fans in other models and they really don't provide enough circulation with clean cool air. I had an idea of trying to install screening of some sort probably the black plastic type it may add to the appearance

I'm back...God please help me be nice to my wallet!

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11-03-2004 04:18 AM  13 years agoPost 4
Busted Nut

rrNovice

Winnetka, CA,USA

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Cut it out
Hello I just thought of something, you might try before you cut it all away.
Cut a "NASA" (i think that is what they call it) duct it is kind of a wide Y shaped cut out it works with the air speed to create a venturi effect and pull in more air.
The screen idea is a good one, some plastic window screen painted balck would be Kool.

Good luck, John

Fury,Eolo,9C&401

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11-03-2004 05:01 AM  13 years agoPost 5
Sparkhead

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Melbourne Australia

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I have put a photo in my gallery of how much canopy I cut out. Originally I had a heap of 10mm holes drilled in it so I just cut it out using those holes as the corners of my openings. The battery sits down from the motor and gets cooled quite well. I would give this a try before you cut the whole windshield out. If you are just hovering it is going to get pretty hot as well since there isn't alot of airflow in this situation, but forward flight should cool it OK.


Mick.

Robbe & Futaba.

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11-03-2004 05:14 AM  13 years agoPost 6
Sparkhead

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Melbourne Australia

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Even though you cant see it in the pic, I have also opened up the underside of the nose with a big hole as well.


Mick.

Robbe & Futaba.

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11-03-2004 12:30 PM  13 years agoPost 7
Reesy

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In the doghouse ... Nottingham UK

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Funny you should say that....
I've been running my Lehner on 5S1P and initially got overheating problems
2 car heat sinks heavily dremelled sorted the motor but then the batts got hot.
Now my canopy looks like someone got shot..
Anyroads I fettled up a 6S1P 2100g2 pack up last night and got an old cpu fan which runs off the join (halway between the 2 packs to give 12v) this was tie wrapped to the side of the motor
With some trepidation I took it off this morning expecting a loud bang or splat or summat..
All I can say is wow .. my Eolo goes like s.o.a.s.s. and the motor batts and controller are no more than luke warm after 10 mins of cranking it round the sky.
Try the fan

Paul

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11-03-2004 06:46 PM  13 years agoPost 8
Sparkhead

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Melbourne Australia

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wouldn't the fan unbalance the Lipo?


Mick.

Robbe & Futaba.

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11-03-2004 07:26 PM  13 years agoPost 9
Reesy

rrKey Veteran

In the doghouse ... Nottingham UK

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Ah grasshopper

Hmm plan B?

Paul

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11-03-2004 09:05 PM  13 years agoPost 10
rcaddition

rrApprentice

military

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no it wouldn't unbalance the lipo. those fans drain such a small amount of mah from the pack that as long as you don't let it sit running after your flight you'll be fine. who leaves their pack connected after flight anyway . better yet how about a 24volt fan
maybe a good fan is an option. I just hate adding more wires when cutting away the clear canopy visor can solve all my problems, and still look the same. I mean it is clear.

I'm back...God please help me be nice to my wallet!

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11-03-2004 09:15 PM  13 years agoPost 11
Reesy

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In the doghouse ... Nottingham UK

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Nope
I'm too tight to BUY a 24v fan
just nicked an old CPU one
will nip down to mappo's to get a 12v voltage regulator 50p and all will be well.

Paul

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11-04-2004 01:47 AM  13 years agoPost 12
Reefer

rrApprentice

ShaTin, Hong Kong

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Why don't you connect two of 12V fan in serial?

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11-04-2004 05:13 AM  13 years agoPost 13
Sparkhead

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Melbourne Australia

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I might look into the CPU fan as well, I suppose there are some pretty small and light ones around. I hovered my Eolo yesterday for 8 minutes and the ESC reduced the rpm of the motor down a bit. So I've ordered the Kontronik 29mm ID heatsink and have been told that it will clamp down to 28mm. I think the one I made isn't really working properly because the fins are too thick. I charged the 2100 mAh 6s battery last night thinking it would be pretty flat and it only took 1400 mA.


Mick.

Robbe & Futaba.

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11-04-2004 12:26 PM  13 years agoPost 14
rcaddition

rrApprentice

military

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I have that kontronik heat sink and its pretty nice. Like I said heat isn't an issue as long as the canopy was off. I'm not into extreme 3d yet so I think that if I don't completely cut away the visor I'll at least remove a large proportion. I'll make my decision tonight.

I'm back...God please help me be nice to my wallet!

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