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Other › Yet another Align 75A ESC question....
10-25-2006 11:03 PM  12 years agoPost 1
blackkat98

rrVeteran

Shreveport, La USA

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Ok, I have contacted Andy at Align and asked him to swap my ESC for a newer one with the heatsink on it. He ran the serial number and told me that I have one of the new ESCs. Do some of the new ones have a heatsink and some do not? Mine definitely does not have a heatsink. This thing gets scorching hot in no time. I am doing no 3D at all and my pitch is only 9 degrees. He suggested that the gear mesh and/or tail belt tension may be too tight. I know this is not the case and if anything, my belt is on the loose side. I do not want this thing to catch fire and if I continue to use it, it seems the temperature is getting hot enough that a fire would certainly be a possibility. I asked him if Align would replace my entire helicopter if the ESC torched it. I have not gotten a response yet on that question. I just thought I would ask for input here. I have read a bunch of posts of other guys successfully getting Align to swap their ESCs no problems. Does the thing have to ignite first before they will replace it? I'm at the point where I am considering a CC85 or 125 to replace this one. I do not; however, want to pay for another ESC when I've technically already paid for this one.

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10-26-2006 08:02 AM  12 years agoPost 2
Raptor Rulezzz

rrKey Veteran

Rockanje, Zuid-Holland - The Netherlands

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When you are hovering/flying, is your throttle curve ABOVE 85%?? If not, this is why your esc is getting hot.

Cheers,

Rich



Proud Member of Team QuickUK, Team Duralite & Sponsored by V-blades & 4rc.nl

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10-26-2006 08:29 AM  12 years agoPost 3
caseyjholmes

rrElite Veteran

Portland, Oregon

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with the pitch at 9*, it will fly on the "warm" side. Increase it any higher, and align wont warrant it, but won't recomend more than 12* pitch either
I put some heatsinks on mine and that helped quite a bit. I Ran it at 14* pitch for a flight or two without problems.. but went back to 12* cause I didn't want to "push it"

FWIW
I ran mine without heatsinks on it for a while just fine too. Just gotta keep your pitch down on the stock setup. Nobody sees it, but the manual recomends 9* pitch for the stock components.

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10-26-2006 02:11 PM  12 years agoPost 4
Raptor Rulezzz

rrKey Veteran

Rockanje, Zuid-Holland - The Netherlands

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but went back to 12* cause I didn't want to "push it"
I just got back from the field and with 12 degrees positive on V-blades you will pull 102 amps on a climbout.

I pulled one short peak of 112 amps (2420watt) doing sideways tic toc's, wel only one tic toc, the rest of them stayed nicely under 100 amps

Cheers,

Richard



Proud Member of Team QuickUK, Team Duralite & Sponsored by V-blades & 4rc.nl

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