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New Tmaxx build almost done

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easy rider

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Edit: I had to edit. Because I get side tracked doing 3 things at once. And blabbered on like I was drunk. Spelling kinda resembled it too.

I started out a few months ago building a 2.5 chassis to 3.3 specs. I was going to run a dynamite .19 on it. I stopped my build thread while waiting on parts. But, in the time waiting, I run into an old buddy that had bought a 2.5 off eBay last year.

When I found out he had a nitro, I got pretty pumped. Because I like getting together and running nitros with my buddies. Anyways, he couldn’t get it running. I told him I could and got the truck from him.

I tore into the truck and while it was a cool ride, it had been setting awhile and wasn’t well taken care of. So, the little tlc he said it needed turned into a bunch of work. In the meantime, I got an idea to give him the 2.5 I was building.

So, I did. But, before I did, I took some of the things I wanted back off and decided I’d build a 3.3. Hence my thread Friday. But, I was digging through my boxes of parts Sunday and Whallah!!!! A 3.3 chassis. I salvaged the rpm true trac rear arms, my dynamite mach 2, and the battery and receiver boxes for this.

Say ELLO to my little friend!!!! Yeah!!!!! I’m going to put the tank on it, install the electronics, and bolt that beautiful red motor to the chassis tomorrow. Then pull my hair out waiting on the servo that’s supposed to be here Friday.

I’m going to run sledge tires on it because I’m out of money and it’s what I got. But, I’ll likely leave them on it anyways as they really increase top end of a tmaxx. Plus, I got to finish my revo 3.3 build this summer and I’ve got some cash I still got to spend on it.

I bought a clear body and intend to paint it ocean blue. Put the window stickers on it and run it that way. It should be a pretty ride.

Anyways, this is how it sets right now. Only thing I’d do different if I could is use the factory screws. I’ve had to use a lot of stainless steel bolts in this build. And, they certainly strip easier. Other than that, I’m pretty happy with it. And, am excited to get it finished. Hopefully the servo gets here quickly.

I’ll post pics of it once I get the body painted up and the servo on it. Can’t wait to get it broke in and run some fuel through it. I ordered a gallon of master basher last week so, it’s going to get some run time!

I post pics as I get them and a video or two once it’s broken it. I'm pumped.

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Here’s how it sets. Hump pack is charging. Heat gun battery is charged.


I got to looking in my parts box and found a 2075 servo. Yeah for me. The one I ordered is coming tomorrow. Now I got an extra. Going to get the pack in it and center the steering servo and adjust linkage after work tomorrow.

My fuel showed up yesterday. So, I’ve got a gallon and an half of master basher now that I’m thinking I’m going to run up about 3/4 this weekend in this and my os tmaxx. I’ll order some more in a couple weeks after I build up my funds.


I patched up an old 3.3 body to get it broke in with. I’ll get the clear body painted this weekend but, I don’t want to rush. I want to get it right. So, I’ll run this body till I get it painted.

Going to put it on blocks and idle a couple tanks after work tomorrow. Turkey hunt Saturday morning, finish the break in on Saturday after wards. And, run it till I get bored on Saturday and Sunday.

Life has been good during this build. Looking forward to ripping this thing around.

The only not new part is the front bulkhead and diff. The diff is sealed. I couldn’t take it apart and check it. But, it feels good. I put the only new one I got on the rear. I’ve got to order some rebuild kits. I’ve got three bad ones that need rebuilt.

I did a good thing last week too. Found a nice looking 3.3 with no body or transmitter. Motor is questionable. But, I got enough motor parts I can get it running if it’s shot versus gummed up. Going to build this one with an OS carb and 3.3 trx motor. It’s arriving tomorrow. I get picks up after I get a gallon or so through this and start the build on that one.

Enjoy it fellas. It’s later than you think. I’ll get a video or two this weekend of this one. Pretty excited.

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A few bits on info for anyone looking at running a Mach 2.

The pinch on these things are tight. Really tight. Plan on heat gunning the motor. Mine was stuck after fooling around with it during install. The ez start wouldn’t turn it over. Even after heating it pretty dang hot. I had to remove the plug, heat it hot, drop about a half dozen drops of 3 in 1 oil on top of the piston, and it jar the fly wheel with a screw driver and a stout smack with the palm of my hand. Afterwards, I bumped it probably 30 times before reinstalling the plug and firing it up.

I idled almost a tank through it. I hate doing it on blocks. I most certainly prefer tires on And just bumping it around when I was cleaning it out. But, my dogs love chasing these things and they will get a hold of it and, tear it up if they get ahold of it. Been there and done that. So, I didn’t want to risk that or put the dogs in the house. Two hundred plus pound dogs barking in the house ain’t what momma wants to hear on a Friday evening. So, I just paid real close attention and left it on the blocks.

I just don’t like the sound a motor makes with no load on it just spinning the shafts in the air. That’s a personal problem but, just a heads up. It’s just easier with tires and the truck on solid ground. Unless you got dogs. lol

I’m kinda mixed on this Traxxas header on the dynamite. I got it fixed up pretty good I’m just not sure how it’s going to hold up when bashing it.

I’m thinking I’m going to order the os header before it’s over with since I plan on keeping this truck. I like the wider gasket that came with this motor for sure and I can use it on the os header. However, the Traxxas header is too small for the supplied gasket that came with the .19 motor.

I also rigged up the exhaust with a home made muffler brace. Because the Traxxas one that came on the muffler was too short And, wouldn’t reach the resonator pipe when bolted into the pre drilled hole on the chassis. Then I wrapped some wire around the pipe and through the chassis and twisted the exhaust down tight to the chassis.

I like the way that turned out because the pipe is rock solid doing that. Probably going to do it to all my trucks before it’s over I like the results so well. But, the header isn’t tight enough for my liking. Needs a stronger spring or a new header pipe. I’m going to finish break in using this as I won’t be ripping and roaring.

Time will tell what I do but, I’m certain I’m going to do something to address that. I like running nitros when it’s time. Versus fooling around babying them or band aiding an issue.

This carb is set rich. Really rich. I think I’m going to need to lean it a bit to keep from fighting it dying the next tank or so. That may not be an issue because I’m going to be moving the truck in following tanks. Tine will tell. But, Like woggie says, It’s gotta run to break it in.

This are things I’m seeing so far. The motor idles nice. I set the gap at about .7 and I’m thinking I’ll not have to touch that ever again. It just purrs so nice. I suspect it’s going to be an easy break in and result in a very reliable motor.

Lord willing the rain will hold off this weekend enough to get it broken in. And, I suspect it’s going to take 4-5 more tanks to break it in. Because I like to get them hot and get it over with. These things are so tight prolonging it has got to be hard on the rod.

I’ll hopefully get a video up of it ripping around if weather allows.
 
Got my os header and gasket in today. Amains was fast!!!! Got it put back together and hoping to get the break in done the next couple days after work. I’m pumped.
 
I got 7 tanks through it. It’s running pretty good. I still have some leaning to do on the hsn for a decent tune.

It finished the 7th fatter then it started it. That was the first tank I run it pretty good. I forgot aluminum foil and never got the engine over a 192. So, I’ve got to get it running hard and hotter. I just run out of time today.


I hope to finish it tomorrow after work.
 
End of the 8th tank. It’s coming to life. My buddy wrecked it pretty good. Busted the ole big red body. So, I put the ocean blue one on it.

Looking forward to getting it run more the next few weeks. I like the soft suspension. I like everything about it really. Can’t wait to see how it runs after another couple quarts.

 
I like the color. I’ve figured out I build them better then I paint them. lol. There’s not much I can’t do. Jack of all trades. But, I’m bottom of the barrel when it comes to painting.

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End of the 8th tank. It’s coming to life. My buddy wrecked it pretty good. Busted the ole big red body. So, I put the ocean blue one on it.

Looking forward to getting it run more the next few weeks. I like the soft suspension. I like everything about it really. Can’t wait to see how it runs after another couple quarts.

That was awesome!!! Thanks for posting that! 😎
 
It’s a done deal. Run it today and run great. Really impressed with the power it produces. Filming and driving prevents really running it hard. More of an up and back thing. It’s the best I can do. I don’t like doing it but, I like watching videos of the nitros running. So, I do it anyway.


Switched back to revo tires. The sledge tires are just too bumpy. And, I added more spacers to the 2.5 shocks that’s on it. I like the way it handles. 1.5 quarts in and it’s come to life. Gotta put a hose clamp on the exhaust boot tomorrow because the zip ties keep breaking. Then run it till it breaks.


I got another 3.3 chassis I’m going to start working on. Fishing season started. So, it might be a while.


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