Suicideneil

Do you know of any Traxxas Emaxx 3906 videos covering the tranny upgrades from plastic gears to metal gearing? I have a twinn velineon set up I'm looking into. At present I have the two velineon systems ready to install but no lipos yet and will not upgrade until I do purchase lipos. I'm not fond of melting the plastic gearing inside the transmission casing on the first couple runs.

When shifting on the fly I can hear a bit of grinding now and then when switching from first to second gear.

If I do open the transmission housing will I need snot grease or oil to replace the old with?



Warn: (0%)

I posted this at the traxxas forums too

[TexasSP]

So what exactly are you asking? I am sorry, but your post is very difficult if not impossible to follow.

[e-mike]

Originally Posted by ExpoBond

Suicideneil

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I'm looking for a pm'er to send help q and a to, does any one know;


Do you know of any 3906 vids on upgrading the tranny to metal gearing? I have a twinn velineon set up I'm looking into. At present I have the three motors and two esc's no lipos yet and will not run the new set up until I do purchase lipos. I'm not fond of melting the plastic gears on the first couple runs.

Some times when using the control shift to second from first gear I hear a grinding noise but every thing still runs good so far no need to open'er up yet for inspection.

If I do open her up (tranny) will I need snot grease or oil? Also I hear . . . nah sorry for bugging you for tips



Warn: (0%)

I posted this at the traxxas forums too

you can edit your postof curse me too i can't clearly understand your post???

In preporation to upgrade my stock titan motors to brushless twinn velineon systems I am looking for videos and other links to help assist upgrading my transmission gearing to a more durable matter. Any tips vids or other links to help assist?

[e-mike]

look at the rcmonster store...you will find all the stuff you to modif your 3906 tranny and make it bullet proof

[mkrusedc]

I answered you over in Traxxas. My tranny so far has been bullet proof with steel idlers, a single speed conversion and modify the out/input shaft roll pin with either an alllen wrench or steel drill bit.

http://monster.traxxas.com/showthrea...ighlight=idler

[Tempted]

My tranny has been flawless bone stock. And I run a V-Twin on 3s LiPo much harder than most will. Never had a tranny failure.

Edit- Actually I did have a failure. I used a light-weight output shaft that bent and broke under the power of the dual VXL system, no gear issues though. If you want to upgrade, just go with some RC-Monster steel idlers and be done with it.

[lincpimp]

Originally Posted by Tempted

My tranny has been flawless bone stock. And I run a V-Twin on 3s LiPo much harder than most will. Never had a tranny failure.

Edit- Actually I did have a failure. I used a light-weight output shaft that bent and broke under the power of the dual VXL system, no gear issues though. If you want to upgrade, just go with some RC-Monster steel idlers and be done with it.

Well, the dual vtwin must not be as strong as you think. I have killed the roll pin on the top gear, broken input shafts, stripped lower gears, broken the 2 speed sliding dog clutch, and broken tranny cases. The rcm steel idler, and a gmaxx single speed are mandatory. Plus modding a revo input shaft to use the revo spec slipper on the old tranny is a good idea.

All of my damage was done with a single motor setup, 3s to 5s. God knows how many diffs I have killed. Now I have the lst diffs and the modded single speed tranny mentioned above and it can hold up to a 1515 on 8s lipo...

[BL_RV0]

What KV was the 1515 you were running? What ESC?

[mkrusedc]

Originally Posted by BL_RV0

What KV was the 1515 you were running? What ESC?

Me? 2200kv MGM, MM and MMM

[BL_RV0]

I was asking linc.

[lincpimp]

Originally Posted by BL_RV0

What KV was the 1515 you were running? What ESC?

I am running a lt10s esc, and an aveox 36/38/2, identical to a 1515 2y.

I am definately putting the tranny and lst diffs thru some hell. And I plan to gear up for stupid speed. Just need to put a decent body on it...

[Tempted]

Originally Posted by lincpimp

Well, the dual vtwin must not be as strong as you think. I have killed the roll pin on the top gear, broken input shafts, stripped lower gears, broken the 2 speed sliding dog clutch, and broken tranny cases. The rcm steel idler, and a gmaxx single speed are mandatory. Plus modding a revo input shaft to use the revo spec slipper on the old tranny is a good idea.

All of my damage was done with a single motor setup, 3s to 5s. God knows how many diffs I have killed. Now I have the lst diffs and the modded single speed tranny mentioned above and it can hold up to a 1515 on 8s lipo...

It holds up just fine if you drive it right. My Twin on 3s will outrun a 1D on 4s in a Revo, I've already done it. I'm sure you have seen my videos, the truck is plain fast and has too much torque. I use 1st gear at lower speed bashing and 2nd gear on speed runs and racing. If you have had bad luck building your trannies, thats no reason to say a Twin doesn't have the power. I run my truck very hard and it has yet to fail. Single speed isn't mandatory, nor even recomended if you ask me. A V-Twin really benefits from 1st gear at low speeds. I broke a roll-pin way back when the truck was a single VXL, replaced that with a bent hex key and its been off to the races ever since. My recomendation is go with the RCM idlers(I have a set I never installed because my stock ones have never failed) and replace them when your stock ones break. Here is my twin.


http://s252.photobucket.com/albums/h...nt=maxx030.flv
http://s252.photobucket.com/albums/h...nt=maxx028.flv

[lincpimp]

Originally Posted by Tempted

My tranny has been flawless bone stock. And I run a V-Twin on 3s LiPo much harder than most will. Never had a tranny failure.

Originally Posted by Tempted

I broke a roll-pin way back when the truck was a single VXL, replaced that with a bent hex key and its been off to the races ever since.

Bit contradictory...

I have to say that most who run brushless find the stock idlers wear out fast, or the teeth come off. Then when you throw in the steel idlers, the lower gears will loose teeth. Maybe you are not jumping the truck, or have the slipper set loose. Or you are running stock tires on a lower grip surface. I broke many parts, and so have a bunch of people. Run larger tires, jump with a tigher slipper, or just run on the street hard. I can break most things on the street, good traction and plenty of power will do that.

Plus, I would like to point out that if the velineon motors were that powerful, they would snap the 1/8 shafts. i do realize there are 2 of them... They are only feigao s can motors after all.

Smaller motors have less torque, and torque breaks stuff. Run a kb45 motor in something and you will see why they have a 6mm shaft...

[Tempted]

I said my Twin never broke a gear. That was my single. I run on asphault, with SportTraxx tires(as per videos above) and take jumps that would destroy most trucks. Cmon, you've seen all my videos. You know how I drive and how my trucks hold up. My slipper is locked down and I use hard brakes to control the truck in the air. Though I don't have any videos uploaded with larger jumps, these are some I hit on a daily basis. And I'm sure you have seen the 12ft jump I have on my track. No videos of the Twin hitting that, though. Just my word.

Edit- I forgot to mention I also run a spool, traction isn't a problem for me. Control is.

Here are some jumping vids
http://s252.photobucket.com/albums/h...nt=maxx038.flv
http://s252.photobucket.com/albums/h...nt=maxx032.flv