"Direct Drive to Diff" MT2 18SS

[MetalMan]

Video is gonna have to wait. My friend who is also my cameraman works tomorrow, and after that I will be busy with finals.

[ilpufxit]

I've been thinking of something like that too. Just needs a little free spin to get started. You could run some very high gearing (or kv) with the right kind of slipper. One on each end I guess. I've always thought that mechanical brakes were a good idea anyway.

[MetalMan]

Yes, there is such a thing. A RC car/truck is too fast when it creates more lift than it has downforce.

For the MT2, that point seems to be reached at ~65mph (guess). I was doing 10s1p runs with the body on, and the warmer weather/hotter asphault compared to last night helped a lot with keeping the truck more stable. Fewer cars on my street also helped.

I was increasing speed with each pass, to get the feel of how the throttle should be worked. Then one pass, the truck lifted off! And it wasn't due to a blip of the throttle, or an imperfection of the pavement, because the back end lifted off. I'd say the truck got a good two feet into the air before coming back down to the ground, and tumbling. The only noticeable damage was a broken rear ball end and a ripped from bumper. And of course both the 10s pack and the receiver pack were ejectected, despite the good strength of the industrial strength Velcro.

Now I need to work on downforce...

[lincpimp]

If you want a really high down force body, try out the lola style bodies from proline. The 1/8 scale size would most likely work on your truck, and cover up the wheels for better aerodynamics.

[sikeston34m]

Originally Posted by MetalMan

Yes, there is such a thing. A RC car/truck is too fast when it creates more lift than it has downforce.

For the MT2, that point seems to be reached at ~65mph (guess). I was doing 10s1p runs with the body on, and the warmer weather/hotter asphault compared to last night helped a lot with keeping the truck more stable. Fewer cars on my street also helped.

I was increasing speed with each pass, to get the feel of how the throttle should be worked. Then one pass, the truck lifted off! And it wasn't due to a blip of the throttle, or an imperfection of the pavement, because the back end lifted off. I'd say the truck got a good two feet into the air before coming back down to the ground, and tumbling. The only noticeable damage was a broken rear ball end and a ripped from bumper. And of course both the 10s pack and the receiver pack were ejectected, despite the good strength of the industrial strength Velcro.

Now I need to work on downforce...

Better tell that Motor it's in a truck, Not an Airplane!

[MetalMan]

That is a good idea, but I still want it to look like a truck, 'cuz otherwise I would've gotten an onroad car .

I just ordered a wing mount and wing mount adapter from New Era Models that will let me put an 1/8 wing on the back. Should help a lot. Once that gets here, I will see if anything needs to be done to the front of the truck in terms of downforce.

[lincpimp]

Sounds good, I like the truck look myself. i have a few 10th on road cars and use a lola body for my top spped runs. The body will completely compress the shocks at 70+ mph!

[suicideneil]

You could call it Chitty-chitty bang bang....

[MetalMan]

Downforce on this truck was never worked out... I gave up and went to 5s2p A123 and a MM/CCBEC, and ditched the mechanical brake. This setup ran well except the center-front Jato driveshaft couldn't stay on the motor shaft since it lacked the proper screw pin to secure it (just a simple set screw). Basically I'm giving up on the MT2, but its front end is going toward my Corr truck project and its other components will be useful elsewhere. This will also help create some new space 'cuz quite frankly I've run out. A 4wd 1/10 truck won't be missed, though, as I still have my CRT.5.