DealExtreme: $10.32 FLYING 20A BEC Electronic Speed Controller for Brushless Motors (ESC)

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FLYING 20A BEC Electronic Speed Controller for Brushless Motors (ESC)

Price: $10.32

SKU	11980
Qty

43
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Overview

Buy 3+ and Save ($8.86 ~ $9.06)

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Typically ships in 4 to 7 days* (7 to 10 during new year season)

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Manufacturer's descriptions:

·100% Brand New
·Cons-Current:20A
·Max current:25A
·BEC: 2A
·Input: 4-10NIMH/2-3 Lipo
·Timing: N/A
·PWM: N/A
·Weight:25g
·Size:32*24*7mm
·Break On/Off Auto Low battery Slow down at 3.0V/cell Lipo,cut-off at 2.9V/cell lipo

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Quantity	3+ units	5+ units	10+ units
Rate	$9.06 shipped	$8.96 shipped	$8.86 shipped

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Reviews

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Displaying reviews posted by certified DX gadget owners first, followed by all other posted reviews.
Excellent basic brushless ESC

Posted by desolder on 12/1/2008
Involvement: Expert (understands the inner workings) - Ownership: 1 week to 1 month

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Pros: This is an unbeatable price for a good brushless ESC. It gets a little warm at the full 20A rating, so you may want to limit this to 15A to minimize waste heat and lost efficiency.
Supposedly you can program it with SKU 5428, but I haven't yet had the need. The default cutoff and brake settings work fine for my application.
 
Cons: Well stupid me, I fried it when I connected a battery backwards, so it obviously has no reverse polarity protection.
 
Other Thoughts: I opened it up and found out that there's room for extra FETs to boost current capacity. I replaced the fried FET, then added the additional 6 FETS to upgrade it to the 30A version. The additional weight from 6 SO-8 FETs is practically negligible, so you may want to just get the 30A version for an extra $1 (sku 11981)
 
Bottomline: Get the 30A version since the weight increase is negligible.

Specifications

Dimensions: 1.77 in x 0.94 in x 0.28 in
Weight: 0.95 oz