01 November 2008
I've been putting off making the switch to 2.4Ghz technology for the longest time, but when KO came out with the EX-5UR, I decided to check it out.
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They package I bought came with two receivers but no servo, which suited me just fine.
The price is really competitive and the features include: 2.4Ghz technology digital trims and sub trims Steering dual rate End point adjustments Exponential rates Steering and throttle speed adjustments ABS 5-position 3rd channel 7 model memory with model-naming and copying |
| My old Sanwa receiver on the left, the KO KR-407S receiver on the right. |
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I weighed the transmitter. |
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Then I weighed my old transmitter (Sanwa MX-3). |
| Two buttons on the pistol-grip gives quick access to the steering TRV (dual rate) and 3rd channel. |
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The 3rd channel has 5 positions that can each be trimmed through LCD menus. This is invaluable for rock crawlers that run a dig unit, or
for gear-changes on some nitro trucks. The small display necessitates many button presses to navigate through the elaborate menus to reach the wide range of features. |
| On my unit, if you set the steering EPA to 100 and casually pull the steering to one side, it goes to 98. You have to conciously put some effort into cranking the wheel to get it to go the extra 2 percent. Letting the wheel go, it usually goes back to zero but once in awhile, it stops at 1 percent left or right. Although not perfect, I consider this quite precise for a transmitter of this price range. |
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My only real gripe is that the transmitter did not have a plug for a rechargeable battery pack (like a LiPo battery). I'm reduced to using rechargeable AA batteries for the moment. |
At the big TITC 2008 race in Bangkok, many drivers running high end KO Propo 2.4Ghz systems reportedly suffered from glitches. We'll see how I go when I attend my next big race.
Pros:
Low price
Lightweight transmitter
KO's fastest response to date (Ultra)
Tiny receiver
Extra receiver package option
7-named model memory
Adjustable 5-position 3rd channel
Cons:
No easy option to plug in a rechargeable battery pack.
Conclusion: If you're on a budget and need a 2.4Ghz system or need a useful 3rd channel to run a crawler dig, then this is the system for you.