RE: spectrum pros and cons.

RE: spectrum pros and cons.
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RE: spectrum pros and cons. - 8/18/2006 9:35:16 PM

-xXXx-

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How long is the reaction time in the spectrum?? How slow is it for the transmitter to move to where the car actually does it??

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Post #: 26

RE: spectrum pros and cons. - 8/19/2006 12:21:34 AM

bentgear

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Its only seems slow to those that buy into the hype of one brand being so much faster than others, in use I would say its not much of a problem. Been a lot of races won using some type of Spektrum system. As much as I like the Spektrum systems I think if anyone can pony up the added bucks to buy the brown box Nomadio special then that would be the way to go, unless you already have a high end module based radio and can just install the Spektrum module and receiver.

Ed M.

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Post #: 27

RE: spectrum pros and cons. - 8/19/2006 2:17:04 AM

rcxboy

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Think of it as you are already sinking $$$ into radio gear, that its hardly much more to pay to get nomadio.

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Post #: 28

RE: spectrum pros and cons. - 8/19/2006 4:21:33 AM

SportCrystals

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I talk to a LOT of retail dealers. Many have told me that they see upper-end to hard core racers moving back to higher-end crystal radios because of latency issues (That's good for me if true) with most all of the crystal-less radios. How much of this is hardcore truth? Is there a swing back to crystal radios for the racers that have the money to buy the fanciest. 'leading edge' technology gear? I'm not sure what to believe anymore!

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Post #: 29

RE: spectrum pros and cons. - 8/19/2006 3:04:20 PM

mkincy

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i have noticed alot of racers ditching the spektrum modules, however they dont switch to crystals. ussually they switch to synthysized modules.

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Post #: 30

RE: spectrum pros and cons. - 8/19/2006 4:37:19 PM

noximus

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quote:

ORIGINAL: mkincy

i have noticed alot of racers ditching the spektrum modules, however they dont switch to crystals. ussually they switch to synthysized modules.

yea thats what i have been seeing, but ALLOT are switching to or have been using nomadio.

crystals dont have a delay but they can and do glitch, spektrum does have a delay, how do i know??? cause when i am racing i have to turn left before the actual turn!! if that isnt noticable, then i dont know what is.

a bud of mine races with the nomadio, prestine if you aks me, turns right on point.

you are right though, some people cant even know the difference, but i can and many others can as well. like what was said, if you are already sopping in 250 dollars on some radio, its well worth the extra 25 dollars to do it right the first time around.

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Post #: 31

RE: spectrum pros and cons. - 8/19/2006 4:58:52 PM

-xXXx-

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I just did my first run with my spectrum. It worked great and I didn't notice a delay. I was using it in my brushless 18t and it worked great, I didn't notice a delay at all, even though some people say there is, I didn't notice it.

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Post #: 32

RE: spectrum pros and cons. - 8/19/2006 5:02:29 PM

rsilvers

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I am gonna measure the latency on an oscilloscope. I will see if it is real or a misinformation campaign.

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Post #: 33

RE: spectrum pros and cons. - 8/19/2006 5:07:51 PM

-xXXx-

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It's suppose to be 5.6 miliseconds or some thing like that,

and the pro version is 3.0 miliseconds.

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My rc's: aerobird extreme, 3x AAAA, T-maxx, rusty, micro-t

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Post #: 34

RE: spectrum pros and cons. - 8/19/2006 5:08:52 PM

SportCrystals

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Please let me know if you may need any assistance with this project. My plant in WI. sports just about any piece of HP test equipment you could dream of. We could dig into the stability of the oscillator circuits too.

quote:

ORIGINAL: rsilvers

I am gonna measure the latency on an oscilloscope. I will see if it is real or a misinformation campaign.

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Post #: 35

RE: spectrum pros and cons. - 8/19/2006 5:27:21 PM

rsilvers

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The 5.6 or 3.0 is just for part of the loop.

I plan to put a trigger voltage into the potentiometer on the DX3 steering wheel and then measure from the servo output on the receiver. I will repeat it with my X10 heli radio -- which is a very high end analog system. We will see what is faster and by how much.

SportCrystals,

I do need assiatance. I don't currently own a digital oscilloscope. I was actually planning to buy one JUST to stop speculation on what system is fastest. I am not sure what scope to buy and would ideally like to borrow one -- even one of those pocket digital scopes. I don't need a lot of bandwidth. Or you could do the experiment and report the results.

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Post #: 36

RE: spectrum pros and cons. - 8/19/2006 5:50:06 PM

SportCrystals

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I think we may be able to help. Would you be willing to send your gear to our plant in Middleton, WI for such tests? I'll talk to my partner on Monday about this. It would be a fun project for him!

quote:

ORIGINAL: rsilvers

The 5.6 or 3.0 is just for part of the loop.

I plan to put a trigger voltage into the potentiometer on the DX3 steering wheel and then measure from the servo output on the receiver. I will repeat it with my X10 heli radio -- which is a very high end analog system. We will see what is faster and by how much.

SportCrystals,

I do need assiatance. I don't currently own a digital oscilloscope. I was actually planning to buy one JUST to stop speculation on what system is fastest. I am not sure what scope to buy and would ideally like to borrow one -- even one of those pocket digital scopes. I don't need a lot of bandwidth. Or you could do the experiment and report the results.

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Performance Devices / Buy RC crystals

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Post #: 37

RE: spectrum pros and cons. - 8/19/2006 5:56:07 PM

rsilvers

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Normally yes, except that I only got it this week. So I am playing with it every day.

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Post #: 38

RE: spectrum pros and cons. - 8/19/2006 5:58:42 PM

SportCrystals

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From: Soulsbyville, CA, USA
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I'll let you know what my partner says about the testing. Your's is one radio we do not have at our plant.

quote:

ORIGINAL: rsilvers

Normally yes, except that I only got it this week. So I am playing with it every day.

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Performance Devices / Buy RC crystals

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Post #: 39

RE: spectrum pros and cons. - 8/19/2006 6:26:24 PM

P2gee