Model Boat Mayhem - Forum

Technical, Techniques, Hints, and Tips => Other Technical Questions... => Topic started by: jaguarfold on August 29, 2010, 09:46:55 AM

Title: mixer problems
Post by: jaguarfold on August 29, 2010, 09:46:55 AM
hi guys i bought the m troniks mixer unit and viper 15 plug n plays when wired up through the mixer i cant get the throttle to do anything the motors run with the rudder but wont turn with throttle unless a bit of rudder is applied any help please
Title: Re: mixer problems
Post by: Shipmate60 on August 29, 2010, 09:58:17 AM
Which mixer unit as none on their website?

Bob
Title: Re: mixer problems
Post by: Prophet on August 29, 2010, 09:59:46 AM
not sure how to help you with a mtronics mixer never used one nor would given that you can't edit the amount of mixing, as a suggestion, next time get Actions P40 http://www.action-electronics.co.uk/mixers.php (http://www.action-electronics.co.uk/mixers.php)

only thing i can suggest is this...

your setup should be , 2 esc --->two motors  1 mixer 1 servo rudder, check you plugged it all in right.


i have found w tails and v tails , but not sure what your using so can't help to much without that infomation both do diffrent things
Title: Re: mixer problems
Post by: Shipmate60 on August 29, 2010, 10:04:19 AM
Also, what radio set are you using?

Bob
Title: Re: mixer problems
Post by: jaguarfold on August 29, 2010, 10:36:35 AM
using two 600 motors 2 props counter roatating futaba 27mhz rx  tx the mixier is the v-tail  marine mixer had to put y lead to put rudder survo on has 2 viper 15 esc
Title: Re: mixer problems
Post by: Prophet on August 29, 2010, 10:48:08 AM
(http://www.howesmodels.co.uk/admin/products/uPU9H3nS/wire%20041.jpg)


by the looks of it that mixer does not support a rudder servo.. so here's the setup

esc's should plug into one end of the mixer using both cables ( outputs)

one cable from the input should be plugged into the rx unit using port 2 ( throttle) and the other into the rx port 1 ( rudder)

the boat will steer by stopping one motor and speeding up the other giving you a turn

there is NO rudder servo function so remove the rudders and the servo!  i might be wrong but i can't see how.

if you want rudder to work you will need actions P40 mixer
http://www.action-electronics.co.uk/mixers.php (http://www.action-electronics.co.uk/mixers.php)
Title: Re: mixer problems
Post by: jaguarfold on August 29, 2010, 10:52:52 AM
so its no good for my boat then from what you say its my rudder servo on the y lead thats causing the problem thanks for that have to source new one  {:-{
Title: Re: mixer problems
Post by: Shipmate60 on August 29, 2010, 11:06:23 AM
Prophet,
Yes you are wrong!!

If you connect a "Y" lead into the receiver channel 1 (rudder) you will get uninterupted rudder function.
Have you set up the speed controllers on the receiver channel without the mixer.
I would also recommend a MARINE mixer which will reverse the inner motor when 50%+ rudder is selected.

Bob
Title: Re: mixer problems
Post by: Prophet on August 29, 2010, 11:12:02 AM
yup im wrong fitting the y lead to the rudder should work, for the rudder must have missed that its to earlie and i have had to little coffee! {-)
Title: Re: mixer problems
Post by: jaguarfold on August 29, 2010, 11:14:07 AM
ive set the the esc on there own working fine but when the mixer is plugged in with the rudder no throtle response unless some rudder is applied think im going to action for one of theres should have visited them yesterday but was at the wrong show in birchwood lol
Title: Re: mixer problems
Post by: DickyD on August 29, 2010, 11:46:21 AM
I believe the v tail mixer was designed for aircraft and was supposed to be connected to two servos.
Title: Re: mixer problems
Post by: jaguarfold on August 29, 2010, 11:51:23 AM
what would you guys recommend i get then its to run the twin motors and rudder system on my sangetti 1/24 scale fast attack boat
Title: Re: mixer problems
Post by: DickyD on August 29, 2010, 11:54:39 AM
Speak to Dave at Action Electronics he will be able to tell you exactly what you need. :-))

0115 9607951

www.action-electronics.co.uk
Title: Re: mixer problems
Post by: Shipmate60 on August 29, 2010, 01:10:47 PM
Here is a video of one of Dave's mixers in ACTion.
I use this video as the model is light and the propwash can be seen.
This is on a 3 shaft 10 foot hull.

http://media.photobucket.com/video/prinz%20eugen/shipmate600/Picture029.mp4?o=5

Bob
Title: Re: mixer problems
Post by: Circlip on August 29, 2010, 03:42:21 PM
Never seen any V-tail boats. A V-tail mixer is plugged into the Rudder and Elevator channels on the receiver. On application of Rudder command, both servos rotate in the same direction when viewed from above, applying Elevator, both work in opposition. Not much use in a boat, but if you progress to a Sub with X configured tail feathers, it will be some use.  O0

   Regards  Ian.
Title: Re: mixer problems
Post by: DickyD on August 29, 2010, 04:29:23 PM
Never seen any V-tail boats. A V-tail mixer is plugged into the Rudder and Elevator channels on the receiver. On application of Rudder command, both servos rotate in the same direction when viewed from above, applying Elevator, both work in opposition. Not much use in a boat, but if you progress to a Sub with X configured tail feathers, it will be some use.  O0

   Regards  Ian.
Almost identical posting to mine, well done, on the ball again ok2
Title: Re: mixer problems
Post by: jaguarfold on August 29, 2010, 10:42:14 PM
thanks guys for your help cant believe it i was sold it by a trader at the birchwoood model boat show for my boat cant trust anyone who wants Ur cash these days  :police:
Title: Re: mixer problems
Post by: FullLeatherJacket on August 30, 2010, 07:44:31 AM
thanks guys for your help cant believe it i was sold it by a trader at the birchwoood model boat show for my boat cant trust anyone who wants Ur cash these days  :police:

I guess his knowledge was limited to what was on the label. We have had a number of customers who have reported that the MTroniks ESCs don't work properly with their mixer.

As one or two folk on this forum have found, the P94 removes all problems of compatilility because everything is in the one box. Suit yourself.

 I still cross my fingers when I watch that video, Bob!

FLJ
Title: Re: mixer problems
Post by: Circlip on August 30, 2010, 11:20:30 AM
Quote
Almost identical posting to mine, well done, on the ball again

  Err, don't think so, you explained what it is, I explained what it does and why and what future use it might be.   %)  :-))

  And just to be Technically correct jaguarfold, if you were using stripped down servos as the propulsion source, a V-tail mixer would work to give selective and joint forward and reverse control.

  Regards  Ian.
Title: Re: mixer problems
Post by: FullLeatherJacket on August 30, 2010, 11:55:49 AM
Which type of stripped-down servos would you suggest as suitable power plants for a 1/24 scale  fast attack boat?
FLJ
Title: Re: mixer problems
Post by: Circlip on August 30, 2010, 12:01:48 PM
Quote
Technically
Title: Re: mixer problems
Post by: DickyD on August 30, 2010, 12:11:41 PM
Which type of stripped-down servos would you suggest as suitable power plants for a 1/24 scale  fast attack boat?
FLJ
Very large ones ?  {-) Technically %)
Title: Re: mixer problems
Post by: FullLeatherJacket on August 30, 2010, 01:04:04 PM
What - like these, maybe?
http://www.servoshop.co.uk/index.php?pid=FUTS5050&area=Servo (http://www.servoshop.co.uk/index.php?pid=FUTS5050&area=Servo)
They seem rather expensive to me.
Would Jaguarfold need to rebuild his fast attack boat with X-configured tail feathers, do you suppose?
[This is all getting rather technical, isn't it?  :o ]
FLJ
Title: Re: mixer problems
Post by: Shipmate60 on August 30, 2010, 01:08:02 PM
Play nicely or I will take the ball away.

Bob
Title: Re: mixer problems
Post by: Netleyned on August 30, 2010, 01:30:55 PM
I think it all comes back to the fact that Jaguarfold was talked into buying something that does not do the job he wants it to do.
This surely is down to the trader being economical with the truth although the Mtroniks website does make the point that they
are waterproof therefore intimating they are for marine use.
Must be for seaplanes then :(( :((


Yours Aye

Ned
Title: Re: mixer problems
Post by: dem555 on August 30, 2010, 03:35:10 PM
Must admit I am a little puzzled? - hope i am reading the problem right.
Got the same mtroniks setup, wired as per the diagram in the main-sites technical stuff article, 'do they both go round mister', and works perfectly.
Also works if cheap turnigy v-tail mixer substituted for mtroniks mixer.
My setup needs slight throttle before steering works, whereas from the 1st post, it seems to read that rudder needs to be applied before throttle operates.
Maybe something to do with which/ order of channels it's plugged into, or position of y lead?
My radio gear is cheap, 2 channel, non computer type, so nothing to confuse the setup.
I also use separate receiver supply, so could there be interference from internal bec(s) of esc's?
Hope that helps, because few things are more frustrating than new kit not working as expected.
Title: Re: mixer problems
Post by: jaguarfold on August 30, 2010, 10:52:15 PM
well guys thanks for the good advice Ive just had to put my 40a esc in to run both motors for now will be going to action end of next month when i get paid to get an all in one setup sounds like the best opsion thanks again