What Is The Strongest Dig

[Foxracin]

What is the strongest dig out there that will stand up to a 4600kv motor on 3 cell? It going in my scx10 but I figure there are more people on this section that use them.

The R2D is just not going to cut it destroyed the gear set in one in about 10 minutes so Im going to have to go back to the Axial trans.

Should I go DNA the new Eritex? Or what?

Here is what happened to the R2D.

http://www.youtube.com/watch?v=w3RrzRR_8jg

[eron]

The Eritex Dig.

[Foxracin]

Originally Posted by eron

The Eritex Dig.

I have been looking at it. I really like how small and the way it works. It my be the one I get.

[666]

I honestly don't think anything is going to hold with power like that. You might prolong the life a little while if you shift it at low speeds, they were never intended for that kind of abuse.

[the kil]

i agree with 666 WAY to much motor

[dkf]

I really like the look of this Vanquish dig.
http://www.vanquishproducts.com/vp-d...xial-ax10.html

[Mudsy]

Yeah, these digs are made for use with brushed motor, I think. I use anywhere from 35 to 80 turn bushed motors with my Dna dig with no problem. I like 45 turn the best... plently of power with some wheelspeed. But that's my opinion.

[gunnar]

It going to be tough to come up with an AX10 transmission to hold up to that kind of power. You'll have to start with an Alum tranny case, probably S3R since that has a pretty thick motor plate that is part of the front tranny half. Then steel gears for sure, Robinson or RC4WD one-piece bottom gear. Most digs are strong, but are more geared for comp use. I think the strongest is going to be the S3R, but you'll need the one with the solid case, not the new skeletonized version. It might hold up when well greased, but it looks like you can thrash pretty much anything with what you're running.

S3R tranny case with Robinson steel gears(top gear is aluminum):


But you'll need this solid body dig:


So you will end up with this:



But it still might not hold up to your abuse.

[Foxracin]

Originally Posted by gunnar

It going to be tough to come up with an AX10 transmission to hold up to that kind of power. You'll have to start with an Alum tranny case, probably S3R since that has a pretty thick motor plate that is part of the front tranny half. Then steel gears for sure, Robinson or RC4WD one-piece bottom gear. Most digs are strong, but are more geared for comp use. I think the strongest is going to be the S3R, but you'll need the one with the solid case, not the new skeletonized version. It might hold up when well greased, but it looks like you can thrash pretty much anything with what you're running.

S3R tranny case with Robinson steel gears(top gear is aluminum):


But you'll need this solid body dig:


So you will end up with this:



But it still might not hold up to your abuse.

That solid locker is nice but it will not allow the use of a dig unit will it? More of the dig units come with a different outdrive that the dig parts fit onto correct? And with the solid locker you cannot change it.

[gunnar]

Yes. So far, the only dig that uses a stock output is the Eritex.

[Foxracin]

Which unit does everybody think will be the strongest. DNA with steel internals or a eritex?

[Foxracin]

Also where can you get that solid one piece locker at? I dont see it on RC4WD's website.

[rentstdi]

So I did some math.

rpm/volt x volt = RPM
BL 4600 11.1 = 51,000
BRUSHED 55t 987 11.1 = 11,000
BRUSHED 15t 4317 11.1 = 47,730

These numbers I got off the Holmes Hobbies website for his handwound motor


I dont really think any tranny/dig can handle that much speed
I know these are motor speeds and not tranny output speeds since I dont really know your gearing..

[JeremyH]

Originally Posted by Foxracin

Also where can you get that solid one piece locker at? I dont see it on RC4WD's website.

That lower gear (if that's what you are asking about), is a Robinson Racing part. Here ya go:
http://www3.towerhobbies.com/cgi-bin...1&I=LXXBK3&P=K

And the middle gear:
http://www3.towerhobbies.com/cgi-bin...?&I=LXWTN3&P=M

[Foxracin]

Also jsut ran across the VP dig and that looks like another option.

So which one out of the 3 do people think is the strongest and why. Between the DNA with Steel internals, Eritex, and the VP dig.

[Eritex Inc.]

Well, I can tell you that any mechanical dig being shifted at that RPM will only last for a couple shifts.

In the Eritex dig, the delrin shifter would probably fail first;)

[Foxracin]

The sig on the setup wasnt really the problem it was the gears in the trans. I have heard they were really weak. The dig unit on it still looks perfect and barely shows any wear. I didnt wide open shift with it for a long time with a Slash motor on a 2 cell and then I upgraded it to the 3 cell and it still held up great. Just the gears let go when I threw a 4600 on it.

[Eritex Inc.]

Originally Posted by Foxracin

The sig on the setup wasnt really the problem it was the gears in the trans. I have heard they were really weak. The dig unit on it still looks perfect and barely shows any wear. I didnt wide open shift with it for a long time with a Slash motor on a 2 cell and then I upgraded it to the 3 cell and it still held up great. Just the gears let go when I threw a 4600 on it.

I have seen some pretty high HP rigs running AX10 transmissions without much issue. Honestly, if the shifting was kept to less then full throttle, the Eritex dig should do okay. Just make sure you have everything lubed properly and go for it

[Foxracin]

Originally Posted by Eritex Inc.

I have seen some pretty high HP rigs running AX10 transmissions without much issue. Honestly, if the shifting was kept to less then full throttle, the Eritex dig should do okay. Just make sure you have everything lubed properly and go for it

What have you seen breaking in your digs? Has the delrin shifter been a problem out of them and have your seen any be broken?

[Eritex Inc.]

Originally Posted by Foxracin

What have you seen breaking in your digs? Has the delrin shifter been a problem out of them and have your seen any be broken?

I have had 2 guys strip the delrin shifter and 1 crack it. There just isn't much to break.