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OS .18TM question

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Electrostatic

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I just got my new O.S. .18TM today. I was looking at it compared to my original Traxxas 2.5r. I noticed that on the 2.5r, the carburetor slide valve will spring back closed due to a spring under the dust cover. Now that makes sense to me since you wouldn’t want the carb to be open and have the engine racing all the time. But guess what, the O.S. slide valve stays open. If you push the slide valve in, it springs back open because the dust cover pushes it back.

Question: Why doesn’t the O.S engine have a spring under the dust cover to pull the slide valve back like the Traxxas engine does?

Please look at your engines and see if it’s the same and let me know.

Thanks!
 
I have a savage and their is a spring that attaches one side to the other and that pulls it back.
 
Yep ... Mine's the same way ... as long as the throttle return spring is secure you should have no problems. :cheers:
 
Thanks for the help!

I noticed that when I went to install it. The throttle return spring does that job well so there is no need for one in the slide valve. Actually, the TRSpring was too strong so I stretched it a little so it would be easier for the servo to pull. Now its perfect. The carb on the OS is a little closer to the throttle bellcrank than the traxxas one was, so that is why.

Anyway, it’s broken in now and screams! Pulls wheelies no problem. I wish I had a digital camcorder so I could post the videos. I found a skate park and was getting insane air off the ramps.

Now I wonder if I should buy the trinity exhaust pipe. Its pretty expensive so I wonder how much more power it will provide and if it will work with the os .18tm.
 
They say for that engine the stock one is not bad. The trinity pipe is more for the high end. Unless your racing, it should be fine the way it is...

Have to tried a MS filter yet?
 
T Machine said:
They say for that engine the stock one is not bad. The trinity pipe is more for the high end. Unless your racing, it should be fine the way it is...

Have to tried a MS filter yet?
Click to expand...


Trinity pipe is for low end.
 

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