Dual fxr wiring??
 

I have a few questions about wiring the two of these up.

- serial or parallel? All of the diagrams here seem to be parallel, but the tekin service guy told me series.
-if wired in parallel what capacitor value would be appropriate? 3s, so 16v, what uf?
-what is wrong with the "squashed" method? Tekin service guy told me it wouldn't work, I have seen it done several times, so I'm wondering the exact problem it causes. I understand they have to cover themselves in case if a problem...

Thanks!!

Re: Dual fxr wiring??
 

yes they have cover their a$$...

maybe this picture will help you.............

http://i260.photobucket.com/albums/i...ps630356ad.jpg

one of the esc's have the red wire pulled, the other esc powers the reciver...
my BEC only powers my servo and nothing else...........
two wires top right have a deans plug on them, then they go to the other esc

this setup is for my MOA
hope this helps

Re: Dual fxr wiring??
 

Looks good, that's how I was imagining it should be, ie parallel. But the tekin rep said it was not a good idea...

Re: Dual fxr wiring??
 

Been running them that way for years.........."thumbsup""thumbsup"

Re: Dual fxr wiring??
 

Yeah, that's how everyone does it.
Should I use a bigger cap than 330uf?

Re: Dual fxr wiring??
 

One Tekin cap for each esc is just fine......."thumbsup"

unless you plan to run 4s then I don't know...
I only run 3s..............."thumbsup""thumbsup"

Re: Dual fxr wiring??
 

So then the caps would be parallel, right? That would be the same as one cap with half the uf, then, right?
Shouldn't make any noticeable difference anyway, it has had no cap at all for the last year...

Re: Dual fxr wiring??
 

I ran mine like this and it's still ready as a plug in back up, if ever needed..

I run a single 25v cap. Positive on one ESC and negative to the other..

Re: Dual fxr wiring??
 

Nice and clean looking!! Why 25v? Are you running 4s? Are they wired to the battery in parallel?

Re: Dual fxr wiring??
 

im not sure about all that...

but One tekin cap for each esc... whatever a stock one is...."thumbsup"

and you will never have trouble .........
same 2 esc's for about 4years......:shock:"thumbsup"

Re: Dual fxr wiring??
 

Yeah, these two have insane usage and have never even had a cap, lol. But 2 caps in parallel is actually less useful than just one, as it cuts the capacitance in half, I'm pretty sure. I'm hoping some EE can tell me for certain.

Re: Dual fxr wiring??
 

Oops, I'm bacwRds! The capacitances add in parallel. I'll just look for one 16v cap at 660uf, or so, since tekin recommends 330uf.
The tekin guy was also very opposed to the "squashing" thing, he really seemed to think it wouldn't work well at all, even though it seems to work just fine for everyone here.
Thanks!

Re: Dual fxr wiring??
 

Thanks. Why 25v? Cause I ran 4s thru my other rigs and I use to use fxr's in all my rigs and they ran 4s, so I had cap's.
That and it gave me the ability to use just one cap and run 4s if I wanted.

The battery wires come straight in from the left, into one ESC. Then positive and negative wires crossed to the other ESC.
From front motor from top left and rear motor from right, where the rx wires run.
The "tekin guy" isn't/shouldn't tell you anything other then what the tekin "warranty" says..

Like the fxr is only rated for 3s(cause anything over there rating void's the warranty).. But it works for years running 4s with a 25v cap.
Smashing the esc's isn't a good idea (cause it void's the warranty when you decase them).. But it works perfectly fine for all of us that run/ran them..

The "tekin guy" may only learn or know what he is told or reads from tekin.. He may not have any actual hands on experience with the application we use..(nothing against the tekin guy!) I'm still full on tekin for my brushless rigs.. HH for my brushed rigs! ;)

We have the hands on... It's why we come here for the knowledge and experience for our needs with our applications.. :thumbsup:

Re: Dual fxr wiring??
 

Cool! Thanks!!
It "seemed" fine.
I'll stop worrying!

Re: Dual fxr wiring??
 

Ok so here's a question... Am I tempting fate running two fxr's on 3S with only one 330 16v cap?????

Re: Dual fxr wiring??
 

I didn't even have a cap, and it worked just fine! So you should be even safer than I was!