DIG unit on a wraith
 

Is it a waste of time to put a dig unit on a wraith? Does it help more than over/under gearing?

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Re: DIG unit on a wraith
 

I don't need one, gearing, tires and driver


Hang up and Drive

Re: DIG unit on a wraith
 

Considering it revolutionized crawling in our little comp world... yep.

Re: DIG unit on a wraith
 

Does a Wraith dig put the rear "brakes" on when in use?
If so, it would be awesome.
With the rear wheels free spinning, it would still work; but not as well.
I'm interested in this topic for that reason.

Edit:
It does have brakes or free rear wheel during dig.
Interested to learn whether it's worth all the extra parts.

Re: DIG unit on a wraith
 

It provides fully what the split ratio OD/UD only provides partially, which is why we use OD/UD where DIG is not allowed in some comp classes.
It helps on tight turns, climbs with high rear grip or under cut that tries to tip the rig backwards & on descents.

It isn't fool proof, the servo epa needs to be spot on or you'll burn servos much like a badly adjusted 2 speed.
Personally I definitely think it's worth more than a 2 speed & is quite easy to fit in the stock Wraith case.

Re: DIG unit on a wraith
 

I've been considering it for a while, I see lots of situations where I perceive it would help me pull off lines.

Re: DIG unit on a wraith
 

I have the Axial Dig module in my wraith trans. It is 3 postion 4wd, rear axle free, rear axle locked. If you only want two position it is 4wd and rear locked.

2 speed fits a much wider audience and is far more useful in various types of driving. A dig units audience is well...pretty small. That said, if your wraith is currently setup for rock crawling performance and frequently run super technical lines, yeah It might be worth looking into getting one. It takes some time to learn to use it effectively but after that you will really realize the benefits. Dig and over/under would be a killer setup.

I saw VP testing a new and possibly redesigned Hurtz dig unit so I'd assume there was more interest in it as of late.

Re: DIG unit on a wraith
 

Thanks for all the info guys. I just picked one up used from a guy here on the forum with linkage and servo mount for 30.

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Re: DIG unit on a wraith
 

So I have my dig unit. I also have a hitec 645mg servo I was going to use until I realized the voltage. What servo do you recommend for a directly powered 2s solution. I may run it off of the 8.0v BEC on my mamba x as well. Undecided there as well. I am running a pro modeler 470 for steering and need the higher voltage.

Thanks for the advice

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Re: DIG unit on a wraith
 

What I did was to wire the bec from my esc direct to the dig servo because the one I use is not high voltage. Then I just use an external bec plugged directly into my receiver and set at 8.0 to run my steering servo. I did it this way because I like to use the bec in the esc as little as possible to keep it cool. "thumbsup"

Re: DIG unit on a wraith
 

I use a HV & external BEC with HH rx bypass for the steering but yeah, only use a 6v servo (I thing it's a 645MG same from memory) for the DIG on mine straight out of the rx.
DIG servo isn't loaded like a steer servo & is only moving through 3 set points anyway, doesn't need to be huge power servo

Re: DIG unit on a wraith
 

I may just run my steering with a 2s 350mah battery. Run everything else off of BEC.

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Re: DIG unit on a wraith
 

I wonder how long a 350mah would even last? But you'll need a lipo alarm to watch lvc, and its just another battery to deal with. I do the same thing as mike does.

Re: DIG unit on a wraith
 

According to John it will outlast a 2200mah battery. The thing weighs nothing as well. Charging it...no biggie

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Re: DIG unit on a wraith
 

Nothing else needs the external BEC, way easier to just hook that direct to steer servo at 7.4V & then just run in ESC BEC at 5.5-6v to the rx.
Nothing hanging off the rx (not even dig servo or a bunch of lights) is going to draw enough amps to bother that BEC, its the amp draw of the steer servo that browns out/kills them.
If you happen to have a power hungry winch off the rx then Holmes has a bypass with an extra BEC power port
RX Bypass Adapter With Auxiliary Output - Wiring & Wiring Accessories - Electronics & Wiring