Monster gt
 

What does it take to get an emaxx tranny on a monster gt? I just picked one up. It is nitro for now. I was thinking of going stock titans that i have for now. Use to to thrash around some. I may go brushless later.

Looks like an easy conversion to me, you only need other dogbones, concidering the long shaft in the gearbox.

I agree with Serum that it should be pretty straight-forward to get the E-Maxx tranny in the MGT, but the tough part may be finding the right dogbones/CVDs to get the power to the front and rear diffs. Once you size the tranny up you can just start looking around on manufacturer and retailer websites for parts that may fit, then check here on the forum to see if Mike can get what you need.

Mike can get you the custom dogbones..

Good point.
I regularly forget that you guys are experts on what to do with an E-Maxx tranny :)
My E-Maxx tranny is still in my (mostly stock) E-Maxx...silly me :D

I'd be inclined to use a short rear dogbone(MGT one may work?) and then have a long one made for the front to keep the weight distribution rearward.That's just me though,just a suggestion,alot of trucks seem to work best with a rear-mid engined type weight distribution but the downside is you will compromise turn in and on power steering,but you gain rear grip/traction.

Or go for middle for the tranny(equal length drive shafts),and have your batts able to move forward or back for adjustable weight distribution.

Do you all think it would be better for a center diff or emaxx tranny? I would like your input to batfish. Since you have the center diff.

Depends what you are doing. If you plan on racing the MGT, a center diff would be much better, because it will improve cornering and will reduce weight. But for just bashing around, the E-Maxx tranny will do just fine. If it were me, though, I would go for the center diff just for simplicity.

Yeah it just depends what you plan to do with it,for general bashing around i'd go with the e-maxx box.It's lower geared and easy to install.Plus gearing is nice and low for a monster truck.With a 51t spur you have 12 to 20T pinions to chose which is a nice range of gearing for a truck like the MGT.For speed runs or 60mph type speeds the center diff gearing is better.

For racing, go center diff for lower weight,lower center of gravity (lowers motor considerably).Gearing low enough can be more challenging though.

coolhandcountry,
If you can hold off for about a week, I'm going to be getting more stats on the MGT with the center diff.
I'll be hooking an EagleTree recorder up to the MGT and running it with the 10L geared at 12/51, using the MGM 12012.
I will be testing with 3s and 4s lipo, and 12-cell nimh. I'll get the information on each during some back yard bashing, then post it on the forum.
This can give you (and anyone else who is interested) good data for this setup.

FYI - when I ran it with 3s lipo, the 10L at 15/51, and the MGM 12012 at the track last week, the 10L got too warm for my liking.

More to come...

I am not in big hurry. So test away batfish. I was checking out the truck. I will have to build spacers for the emaxx tranny. That or cut the bottom out of chassis. The chassis is still wider than tranny by a little. I go for the spacer. I will have to keep the forum up to date as well.

In this one i used a centerdiff.

My experiences are that it runs silcky smooth, and steering and handling of a centerdiff truck is lovely. put 40 serie wheels on it, and it's like driving a 1/10th touring car.. (allmost then..;) )

You won't be able to pull wheelies badly, but hey, i don't mind doing no wheelies at all..

The tires that are on it serum now are 44 series. I think imex makes them. 4.5 inches wide and 6.5 inches tall. I not going for speed. I have a few hill I play on to. I not ruling out the diff. I just not sure if it works for hill climbing. Would have to run thick oil in diff if I did. I am open minded person.

If you do end up with the center diff and want to do some hill climbing (and performance suffers due to the diff) you can always lock the center diff with a neat trick I learned a little while back - put silly putty in it. It's thick enough to lock the diff and it doesn't stick to anything so it's easy to remove when you want to un-lock it.

I would have never thought silly putty. Sounds like it would work. I think I will go for the emaxx tranny first. I may put a center diff on my gmaxx and the emaxx tranny on monster gt.

Okay mike. I need to get a 93 mm shaft and a 100.5 mm shaft for the gt. The ue titanium ones will work. could you order these and put them with the rest. Thanks

Dog bones mike. for the center.

Just about got the tranny finished up. Put a temperary shaft in back. Project coming along nicely.

Have you figured out where the batts are gonna go yet?(joke)

Cool,looks like simplest conversion in terms of battery placement i think i've ever seen,it's just like an e-maxx,it is wide enough right?Weight distribution should be spot on aswell for a locked center.

How many cells will fit flat there coolhand?

I have place 8 cells flat per side. I was thinking of running some 16 cells on it to. Should co nicely. The tranny is off my other emaxx. I have to get me one for it. I figure some gorilla straps and a little more work. It will be ready to run. I keep up to date as it comes along.

Does any one know if the monster gt diffs take oil? I don't think there is any in them. Just wondering before taking it apart.

Here's a quote from AE's FAQ:

"This tip comes directly from Team Associated/Thunder Tiger driver Richard Saxton. You can tune the MGT's sealed differentials by using silicone diff fluid of different viscosities. To improve steering, fill the rear diff with 5,000 to 10,000WT diff fluid. Before you add the fluid, you'll need to get rid of the factory grease that's packed into the diff. Fill the clean diff with fluid and seal it. You can leave the front diff alone or fill it with 1,000WT diff fluid. Either way, your truck will have more steering."

If my other steering mods don't help, I'll be putting 7,000 in the rear diff soon.

What is wrong with the steering bat? I have not finished mine yet. Parts on the way. thanks mike. What are you going to try? Let me know how it turns out please. Not trying to copy you. Just like good things. I going to run a hv maxx for now. I have to let you know on it.
By the way. Are you liking the center diff.

For bashing there's nothing really "wrong" with the steering, but for racing I've found that the steering radius is far too wide. In order to give it sharper turning, I've shaved some from the knuckles and I'm working on how to stop the steering linkage from hitting the front diff case. My guess is that I've so far gotten about 15-20% sharper turning. I'm hoping to see how it does at the track tonight.

Hey Batfish. you could put Revo wheels on the Monster gt. It will narrow your truck about 1" and improve steering response. the only problem is the narrow track may cause a traction roll if you have enough traction.

I've actually got Pro-Line Velocity Maxx dish wheels on it now, which do not have an offset, so I'll see how that works.

Sorry to put a little hijack on the thread, coolhandcountry, but these tips may help out in the long run anyway :)

The Revo wheels move your track in by an inch. The revo 40 series wheels will move your track in by 3/4 of an inch so you have a couple of options for adjustment

I'll take a look at those wheels.

Hey it is all related to the monster gt. Hi jack away. I don't under stand how narrowing the wheels up would help. Shorting up yes. What if you shorted the arms up on the steering. If you shorten it up on the side where the drag link is. This may fix problem of hitting the diff and give it a little more turning. I don't know how it would effect the geometry of the steering though.

the track width can have a drastic effect on steering and handeling in general. A wider track width(from center of one tire to the center of other tirewill add stability, at the cost of some steering due to the resistance to weight transfer. A narrower track width will let the weight transfer happen which will let the truck turn quicker(sometimes too quick)

oh okay. that make sense. It is all so clear now.
I think I messed up on the what part to shorten. You would have to shorten the servo mount side.

Coolhand,narrower track won't affect the steering geometery but will sharpen up the turn in.Completely different things.Turn in describes the way the car handles the beginning 3rd of the turn.

When you tune a chassis you break down the cars behaviour into turn in,mid corner and exit.A sorted car should pull a balanced drift on a balanced throttle(balanced throttle=constant speed).

Using more steering radius on turn in on a car that pushes under turn in will only make the problem worse.Generally the less you steer the faster you go whatever part of the corner you're in(steering acts as a brake).A sorted car is steered via controlling the front/rear balance as much as,probably more than, by turning the front wheels.

Don't cut down the center link Coolhand, if you do you will mess up the factory geomentry

no not the center link the arms that hold it. I was thinking wrong though.

If you want more steering you need longer bellcranks

Longer on the front shorter on the back has the same effect. That is why I said I was thinking backwards. I got you crazy. Keep me straight. If I keep on I have to change name to crazy 3.:D

Okay. I have took it out for a sping tonight. It was a little damp form the rain. I had to do it. It did not do bad. I have a more recent pic as well. It was kind of dark out. Lost my pinion as well. Had to give up. It would pick the front tires up. Suprised me really. I have a problem in the steering. Don't turn worth nothing.

Die hard....

What steering servo do you use? is it up the par? perhaps the wide tires are the bottleneck?

'a little damp by the rain' sure you didn't run thru a river?

It looks good though!

Yeah those tires could be the problem. Do you have the stock ones?

The stock steering for the MGT is also relatively poor. There are several modifications you can do to help with it.
I got all my MGT steering information from the following site:

http://csgbenefits.org/mgt/

The guy who keeps that site is also active on monstergtforum.com.

Checking out that site will definitely help with any MGT questions you may have.

:)

I did some changing around on my steering. What a difference. I move my linkage on the servo saver. It was not pushing as much as it should. It acually hits the end points now. Thanks for the site batfish. I am running the stock servo and don't have the stock tires. I am happy with the way it is turning for now. Much better. It was taking about a 8 ft circle before. got it down to a 2.5 ft.