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Old 06-01-2009, 01:10 PM   #1
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Default Whats the point with the dig?

Can anyone help me understand this?

On the new Losi crawler, Losi has a Dig unit in the transmission. A plastic Dig. Now, Worm drive axles can not be reverse driven like Ring and pinion Gears. Since of this, Couldn't a disconnect be used at the tranny, and the locking be done in the axle? So their basically would not be a Dig unit, just a disconnect, and the rear axle lock on its own.
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Old 06-01-2009, 01:30 PM   #2
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You don't get out much do you?
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Old 06-01-2009, 01:31 PM   #3
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I dont have a losi.

I was asking whats the point of the dig? Is it to keep strain off the worm gears?
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Old 06-01-2009, 01:32 PM   #4
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Neither do I. You are answering your own question with your first post

It's just a disconnect for front and rear. Your brain is working correctly.

Last edited by miller; 06-01-2009 at 01:34 PM.
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Old 06-01-2009, 04:23 PM   #5
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Quote:
Originally Posted by Freq E Tag View Post

Click the image to open in full size.

The output is solid steel. The inner part of the dig is P L A S T I C! wtf? No wonder they said, avoid shifting on the fly. DEFINITELY listen to them when they tell you this!



Whats that then?
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Old 06-01-2009, 04:29 PM   #6
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Originally Posted by eron View Post
Whats that then?

Particle separator for the flux capacitor...
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Old 06-01-2009, 04:29 PM   #7
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Here watch the video it shows it working.

http://www.youtube.com/watch?v=Y3c5kpEb1RU
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Old 06-01-2009, 04:33 PM   #8
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Quote:
Originally Posted by eron View Post
Can anyone help me understand this?

On the new Losi crawler, Losi has a Dig unit in the transmission. A plastic Dig. Now, Worm drive axles can not be reverse driven like Ring and pinion Gears. Since of this, Couldn't a disconnect be used at the tranny, and the locking be done in the axle? So their basically would not be a Dig unit, just a disconnect, and the rear axle lock on its own.
First off, worm gears can rotate in reverse. The dig unit disconnects the drive lines. There is no freewheel, per say. The worm axle locks with no rotational input. So you got three choices, 4WD, front axle driven, rear axle driven. The axle that doesn't have power applied doesn't move.
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Old 06-01-2009, 04:37 PM   #9
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Quote:
Originally Posted by eron View Post
Can anyone help me understand this?

On the new Losi crawler, Losi has a Dig unit in the transmission. A plastic Dig. Now, Worm drive axles can not be reverse driven like Ring and pinion Gears. Since of this, Couldn't a disconnect be used at the tranny, and the locking be done in the axle? So their basically would not be a Dig unit, just a disconnect, and the rear axle lock on its own.
are you saying the truck does not run in reverse?
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Old 06-01-2009, 04:46 PM   #10
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No, If you have a Worm gear spinning another gear, only the worm gear can spin 1st to make the other gears moved. You cant move the others first. Thats why you do not need engine break with worm driven axles. Now, since of this, if you spin your tires by hand you will end up breaking something because the worm gears don't work like normal gears. So my question was, why would you need dig if the axle locks on its own?

Last edited by eron; 06-01-2009 at 04:49 PM.
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Old 06-01-2009, 04:47 PM   #11
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Quote:
Originally Posted by eron View Post
Whats that then?
That's what engages the driveshafts to the tranny gears
The "dig" unit in the tranny is not like what you are thinking, it is just a disconnect unit, the worms do the locking.
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Old 06-01-2009, 04:48 PM   #12
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Edit: Tanis to the rescue.
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Old 06-01-2009, 04:53 PM   #13
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wasn't sure that's what he meant, that's why I asked
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Old 06-01-2009, 04:56 PM   #14
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Boy, and I thought my explaination was simple, I need to go back to skewl! I should have said "there is no dig per say"
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Old 06-01-2009, 05:03 PM   #15
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So drag brakes are no longer needed with the worm drive?
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Old 06-01-2009, 05:12 PM   #16
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Quote:
Originally Posted by Tanis View Post
That's what engages the driveshafts to the tranny gears
ahh! It looked like what was used in the DNA dig units.


Quote:
Originally Posted by Tanis View Post
The "dig" unit in the tranny is not like what you are thinking, it is just a disconnect unit, the worms do the locking.

Thankyou! Thats exactly what i was trying to say but in a question. Thanks for your help, and others for trying
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Old 06-01-2009, 05:12 PM   #17
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Quote:
Originally Posted by rottenbelly View Post
So drag brakes are no longer needed with the worm drive?

correct.
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