Servo / 2.4ghz radio compatibility

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Hyperpete

Hyperpete

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Hi all,
First of all, Im new to all this , so please be gentle !!
Have been bashin my Baja SS with my mate Paul for about 2 months now and am LOVIN IT !! (We used to do the nitro thing ! ARGH ! Glad we got out of that !!)
Anyway, I got an Acoms 2.4 ghz radio to use with my SS, but just used transmitter and reciever, with stock SS steering servo, and Hitec HS 645 mg throttle servo.
All was well until last week when my HS 645 went POP ! (literally!) with a puff of smoke. (Thanks to Paul for saving the session with a spare servo !! - Cheers Mate!) This had been a great servo up until now and I was sad to see it go POP !
It was set up perfectly with all end points set correctly and seemed to go pop for no reason.
I have read various things about servo frame rates (??? eh ??!!) and compatibility issues with 2.4ghz radio systems and analogue / digital servos (??? eh??!!)
I have since put my beloved ACE DS 1015 servo on throttle duties and really don't WANT THIS TO GO POP !!!!!!
So any info / advice / opinions on this issue would be greatly appreciated as I'm a bit of a newbie and don't know much about this subject
Thanks in advance y'all !!!
 
Welcome matey! I will be interested to hear the advise on this 1 cos I have a HS645 servo and was thinking of changing over to 2.4ghz.....if its bad news I may stick with the 40mhz tx.
 
ok, Framerates this is how fast the digital radios send the info to the servos.

the more framerates the faster the info get to and updates to the servo.

analog servos ( like the hitec 645) are analog servos, and cant handle a High (fast) framerate. it ll burn them up. see if your acoms has a framerate adjustment and lower it down. if not, then i would go with Digital Servos, like your ACE DS 1015. Digital servos can talk faster than analog servos, they they prefer high framerates.
make sure linkages arent sticking or hanging up causing additional force/heat. id say the DS 1015 not only will work well, but be a bettery servo for t/b duty.

the ability to run analog/digital servos together is a part of the transmitter. some can some cant.

for instance. not sure on the Acomms. but with Futaba 2.4 you must run in PPM mode if you use any analog servos. and you must run all digital servos if your running in HRS mode. fwiw, you can run a digital servo on PPM mode, but you just wont see the full performance you could from a digital servo ran in HRS mode.

Nomadio (which just discod their rc line the bastards) can run analog and digital servos at the same time. you just need to dictate which servo is digital or analog in each channel settings.

not sure on Spectrums or Ko Pro Kos but i think they ll do both without issue.
airtronics is much the same.

so depending on radio/radio system, can deligate what servos you use.
 
dx3 line is the same Timmah, fast or slow in the setup menu. I believe in the 3r and 3s you can actually set the number you want, but my dx3.0 doesn't have this
 
Thanks for all the info guys !
Thats a lot to take in for a newb like me !

I have had a good look at the manual for my Acoms 2.4ghz and cant find any mention anywhere of frame rates. So as far as I can gather (correct me if im wrong !!) the frame rate is set and is not adjustable. (Anyone know what it is ??)
I cant find anywhere on my tranny menus to adjust it either, so im guessing its fixed.
But if my DS 1015 is digital and will be happier running with the 2.4ghz setup then im happy (as long as it doesn't go POP!)
So is the stock Baja SS steering servo (SFL 10 MG??) digital or analogue?? If its analogue, is there a chance my 2.4 ghz reciever might fry it too?? ARGH! HOPE NOT !!!
I know the Acoms is a cheap 2.4 system, but I do like it.

Thanks again in advance guys. I cant believe i have waited this long to join this forum..... its ACE !!!
 
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Hi Pablo,
I'm sure there are, but I've been rather 'cautious' and just annoying the neighbours near where I live.
Likewise, if you've a 'decent field' we could consider something sometime - I know it sounds like 'never, never' but could be fun!
I'm very green at large scale.
Some just go to Ainsdale beach, but I don't fancy getting all of that sand in the bearings.
 
atom3624 said:
Hi Pablo,
I'm sure there are, but I've been rather 'cautious' and just annoying the neighbours near where I live.
Likewise, if you've a 'decent field' we could consider something sometime - I know it sounds like 'never, never' but could be fun!
I'm very green at large scale.
Some just go to Ainsdale beach, but I don't fancy getting all of that sand in the bearings.
Click to expand...

w e only had 5th scales ourselves about 3months, before that we had nitros, we run ours at calderstones park its a good spot its got a bit of everything jumps gravel and nice short grass, we there sundays from 2pm, your welcome to join us mate.
 
Sounds good.
Isn't Calderstones a tad 'public'?
I've already taken out a lad on a scooter, by accident I may add, despite 15 warnings of 'DO NOT CROSS THERE!!'
I was at I suppose the FG 2WD equivalent of V1 on aircraft - point of no return - checking engine settings and keeping it straight, then looked back and ..... :no::no:
Buckled my Monster bar and loosened a few screws, despite being on full brakes .. stopping 15kg from ~40mph ain't that easy.
Fortunately the lad was OK, despite his impromptu front somersault - now that I know all was OK, I dare say 'quite spectacular' !!
He was warned - but nobody was more sorry than I. :(
No FG for a while, only my (MUCH faster!!) 1/16 E-Revo VXL !!!
That looks cute, but must do about 60mph with 2x NiMH in series!!! :clown::clown:
 
sounds like he got in yea way:clown::clown: i did the same to a lad on a bike with me hyper7 i looked up and he was there, were we go is in the corner of the park by the tennis courts no one go,s there its well out the way.
 
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I up ended my son with my baja, screaming up my driveway(which is about 200 metres long) and the little twit ran in front of it.

I LMAO untill I found out he had a broken ankle.

Looked funny at the time but !

Needless to say he has learned not to get in front of it now !
 
Back to my original question - partway through this thread - which 2.4G Hz radio sets do people prefer for large scale?
Obviously, ease of adjusting the throttle for cold starts, and trimming the steering throw are required.
 
Thanks for that.
Left me relatively confused, as in 'leave as it is' confused!!
There's the new LRP87000 going quite cheap, Hobbythk's got it ~£80, elsewhere in Germany even less.
Are these any good - worth swapping over from the Hitec 40MHz?
 
Interesting info here guys.....im just on with my Marder in a box build and have just got my hands on a Spektrum Dx3.0.....it was cheap but im not sure if i should swap my servo's out for digi ones :helpsmilie:

I need to add an extra servo anyway so it would only mean changing the 2 others......any advice ?
 
the DX3 should do everything you want. If your running anilog servo choose the slower framerate so you don't ask too much of your servo's, if your running digital you can choose the faster framerate and get better response.

I am using the DX3S but still use a slow framerate, that way I know my servo's are hardly breaking a sweat and im only bashing to lightning quick response times don't worry me, im not racing just having fun.
 
sperera said:
the DX3 should do everything you want. If your running anilog servo choose the slower framerate so you don't ask too much of your servo's, if your running digital you can choose the faster framerate and get better response.

I am using the DX3S but still use a slow framerate, that way I know my servo's are hardly breaking a sweat and im only bashing to lightning quick response times don't worry me, im not racing just having fun.
Click to expand...

Thanks.....its only a basher and something i have built up from a box of secondhand bits so nowt special.(1st large scale)
Do you know how to set the frame rate on the DX3.0 ?
 
i would forgo the spektrum radio. they are nice, but maybe 1/2 of owners of them have had range, signal and glitching problems on them when using with a GAS RC, not nitro but GAS. The Coil, Magneto or something is causing them to be a real PITA on a Gas RC. I would suggest you stick with a Futaba 3PMX, even the Airtronics FXSS seems to be much better than a spektrum.

like mentioned above, If you go with a Spektrum or whichever radio, make sure you run the slowest frame rates (the bigger the number the slower the framerate) so you don't burn out the analog servos.

with Futaba, you run in PPM mode for analog servos and HRS mode for all digital servos.
 
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