35mhz to 2.4ghz?

[Mike W]

Well after much thinking and stuff have decided its time to dip my feet into the world of 2.4ghz ... What I would like to know apart from glitch free electronics is there any other benefits of these systems ... I normally use a FF7 but as they brought out the fasst sytem in a complete unit this is what I was looking at with all the digi servos with it that I can then use in my nexus ... Is 2.4ghz faster response than 35mhz ??
Spekky or futaba ? ... Bear in mind that i already know how to program my FF7 and quite like it lol...
Any pitfalls to 2.4 over 35meg ??
worse thing is taking 7 models over to 2.4 lol... Wife wont like me this week lol

[Made2Fade]

I know that spektrum is faster than FASST.
Lee

[jboweruk]

don't know if it comes under what you've said, but I learned the hard way the older 35mhz system don't like you knocking the tranny off before the heli, my Skylift went nuts when I did that, and I'm sure I did the same with my Blade once with no ill effects. I came over from a 3ch where it didn't matter, so still trying to make turning tx off first a good habit, though believe me I haven't done it since my Skylift attacked my mom.....

[Mike W]

Ya mean turning offa ya Rx first lol ... I hope anyway hehe ...

[jboweruk]

yeah, heli first is what I meant.... oops.

edit: in fact that's one more reason I'm thinking of a DX6i or DX7 tx, just in case I ever forget again, with a 2.4 rx in there it would bottom out instead of lifting off....

[Andy from Sandy]

If you use a 35MHz PCM system then turning off the tx first would just enable the rx's failsafe, so there will be no ill effects. The correct way though as already stated, turn the model off first.

Anyway the only thing, having read the manual for the Futaba 7 FASST tranny is that it doesn't have enough switches for the gyro, governor and flight modes. The manual describes running all three from the same switch. On my 9CHP I have them on separate switches so I can mix and match my flight modes.

[DemonJim]

If you're already an FF7 user you will love the FASST FF7 -- it has some additional features such as a dedicated Governor screen (like the FF9) so is now all the heli radio you need - I can't recommend it enough. You can even have three governor settings AND an Gov-on/off switch (using offset P-mixes), so no need for an eighth channel when using a GV-1.

Btw Evo Andy - you can have the flight-modes, gyro and governor levels all on different switches if you want just the same as the FF9 (ie you can choose the switch for each feature, you just have to scroll down a page on the screens ).

[Mike W]

It was more a ? of.... is 2.4 ghz response time from stick input to servo movement faster than a normal 35mhz system ? ... All my Rx's are 35mhz dual conversions for my helis and single conversions for my planks ... My planes i can keep on 35mhz for now no worries there as never had n e probs with those ... It was more a thing to swap my helis to 2.4ghz and to have my scale on it as well ... At least that way if i crash it i know it was not down to elec glitch lol .... and something else casued it ... I have to admit that i do like the menu's for FF7 so it would just be a case of moving my settings from one to the other .. I can sort my helis to it this weekend then do my planks next when i get time lol

[DemonJim]

FASST 2.4GHz feels way more responsive than 35MHz ever did to me. If you use G3 2048 on a 14MZ you won't notice any improvement (as that is still the fastest stick-response time I believe) but with the FF7 2.4GHz you're looking at something like 25ms stick-to-servo response time, as opposed to Futaba PCM 1024 being more like 74ms+.

There's a thread somewhere on rcgroups I think it is where some bloke has tested a whole bunch of radios using oscilliscopes -- basically PCM with an FF9 is one of the worst for response time, and FASST with an FF7 is one of the best (I imagine G3 2.4GHz with a TM-14 module is even better).

I'll try and find it and edit this and put a link here.

[Mike W]

cool thx ....I like the fact that futaba have kept the menu system the same on the FF6 and 7 plus added to it so it means i wont have to relearn the menus again ...

[SimonV6]

I know that spektrum is faster than FASST.
Lee

can you put up some links to back up that story please?


Simon

[Andy from Sandy]

Btw Evo Andy - you can have the flight-modes, gyro and governor levels all on different switches if you want just the same as the FF9 (ie you can choose the switch for each feature, you just have to scroll down a page on the screens ).

That is really good news. I think I may get one for myself. Inwoods look a good bet for the purchase, unless someone knows where they can be had cheaper.

[pxr5]

ive just gone back to 35mhz from 2.4ghz and not looking forward to those glitches.

[DemonJim]

I know that spektrum is faster than FASST.
Lee

FASST is clearly faster - the clue is in the name. Not just FAST, it's FASST! (Which one is the irony smiley? )

Seriously though I think the DX7 and FF7 2.4GHz are pretty similar both at around 24-27ms average response time stick-to-servo (I just can't seem to find that thread listing them all!). Stick-to-servo response is all that matters when it comes to speed, so it's all about personal preference which radio best suits you.

If you fly TX Mode III or IV then FASST is currently the only option though, as the Spektrum DX radios can't be mode-swapped (and are only supplied in Mode I or II).

[Made2Fade]

can you put up some links to back up that story please?


Simon

It was something i think Ash talked about on here a while back cant find the link though. I think it was when he was doing tests on the trex 500 or something.
Ill post the link if i find it.
Mode 3 or 4... whats that?? lol
Lee