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Home✈️Aircraft🚁Helicoptere-BladeOther › Blade CP pro compatibility?
05-21-2007 08:56 AM  13 years ago
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paintball_kidz

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Surrey, BC Canada

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Blade CP pro compatibility?
I am looking to buy a blade cp pro. I would like to use my futuba 7chp radio on it. would it be a drop in replacement or will i need to buy a reciever etc.. also my 11.1v 10c 1250mah lipo with JST plug and play/? sorry for my noob questions.
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05-21-2007 02:37 PM  13 years ago
Muggsy

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So. Cal

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If it is on the same channel then no problem if not rx crystal on same channel(single conversion) . Lipo will work
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05-22-2007 11:49 AM  13 years ago
wormyalon

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Ann Arbor MI, US

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You will need a Futaba single conversion "short" crystal, the one with the black tag not the red tag. Tower hobbies has these in stock usually.

And yes, blade cps have JST connectors stock.

If you haven't already discovered it you should look into buying an Esky Honeybee CP2 (what I fly), it's the same helicopter (a little better in some areas) as the blade cp pro but at half the price! Look into it. I've often seen them on ebay new in box from power sellers for $130 shipped, hell just buy two of'em. C,mon, we all dream of buying multiple RTF airframes and trashing them one after another, or is that just me?
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05-22-2007 12:31 PM  13 years ago
stickyfox

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Rochester, NY - US

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I just wanted to clarify the last post a little because it seems to imply that you should change RX crystals when you change transmitters. This isn't necessary as long as the new transmitter is on the same frequency. The "single-" or "double-conversion" designation applies only to the receiver. It has nothing to do with the transmitter being used.

Futaba crystals are made for Futaba receivers. You should use an E-Flite crystal in your CPP receiver, and get a transmit module on the same channel.

It happens that the E-Flite receiver is a single-conversion type, and that Futaba short crystals do work in it, but it's generally a better idea not to experiment with crystals. If you get the wrong loading or overtone mode (and you can't really be sure without a lot of test equipment), you could have a receiver that's always on the verge of ceasing to work.

There is another factor to consider when switching transmitters, and that's frequency shift. It happens that Futaba and E-Flite both use the same shift (negative, I think), and JR uses the opposite, so you're lucky to have a Futaba.
-fox
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05-23-2007 01:07 AM  13 years ago
wormyalon

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Ann Arbor MI, US

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Oops, didn't mean to imply anything of the sort, it's just that I assumed he would have to change crystals having roughly a 1 in 50 chance of getting the right channel, since there are about 50 channels available. Disregarding any statistical crap of course, like if some channels are more prevalent than others.

When I made the change I went with a futaba short crystal after reading about several other people having success with it, at the time it seemed like the only option. Supposedly going from a low band channel (21) to a high band channel (53) with just a crystal change is bad, stickyfox probably knows why, all I know is it worked.

Whatever you do, whichever crystal you buy, perform a thorough range check and make sure it performs at least as well as the stock setup.

Stickyfox: I was under the impression that you would want a futaba crystal since the 2 crystals frequency would be more closely matched than a mismatched pair from 2 different companies. I'm not at all surprised to hear otherwise, thanks for clarifying.
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05-23-2007 01:29 AM  13 years ago
irush

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Greensboro, NC

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Well while we are on the subject, has anyone used a JR6102 with a R700 reciever on a Blade? That might be my next upgrade.
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