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Other › what is HDE and CDE
12-04-2005 02:33 PM  12 years agoPost 1
chopperman1

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Huntsville, AL

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Hey i want to get trex, but i dont know which is better HDE or CDE what do those mean. Is one better for 3d then the other

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12-04-2005 03:23 PM  12 years agoPost 2
rcmike

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Dickson, TN

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HDE is non-CCPM with a control system very similar to a Raptor. The CDE is a CCPM heli with electonic mixing. It is really a personal preferance. I don't think they fly much different but I have only fown a CDE.

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12-04-2005 05:02 PM  12 years agoPost 3
Ben-T-Spindle

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Central Illinois

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I think that most of us know that CDE is eCCPM and HDE is mCCPM.

The question is exactly what does the letters C, H, D, and E stand for. It’s probably some sort of Chinese acronym or something. I’m sure the guys in Taiwan know the answer. We need some one who can translate for us.

.

... BTS

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12-04-2005 06:44 PM  12 years agoPost 4
dkshema

rrMaster

Cedar Rapids, IA

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There is little difference between how a heli with a CCPM system feels and flies and how a heli with a "standard" swash mix feels and flies if the systems are properly executed and set up.

The CCPM setup in a T-Rex may have a bit of an advantage in that the micro servos don't have a lot of "reserve" power, and in a CCPM system, three servos share the load of running the swash.

The CCPM setup has been reported to be a bit harder on servo mechanics and drive trains in a crash, however, again due to the fact that the gear trains found in the micros aren't as beefy as you'd find in a "standard" size servo.

As for what CDE and HDE actually stand for, I don't think it's ever been stated. It's just common knowledge among the T-Rex groupies that CDE is the CCPM version, HDE is the "standard" version.

Dave

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12-04-2005 07:38 PM  12 years agoPost 5
Gary Hoorn

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Annapolis Maryland USA

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chopperman1,
I have both a CDE and an HDE. They both fly just about the same. If you go with the HDE I would recommend either the Futaba 3110 or the Hitec HS56 servos. They have a bit more torque. I have flown my HDE with both of them. Honestly I prefer the HDE because the linkage seems a bit less "mickey mouse." Also you don't seem to rip out so many servo gears when you crash. I know about that as well The new SE, I have built 2 of them so far, is really nice but your servos are "cannon fodder" if you crash. The frame is designed for something like the HS55 or the Align 9G servo. Hitec HS56 servos will work but require a bit of fiddling. Those who have built a CDE with 56's know all about "fiddling" to get canopy clearance.
Gary

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