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Cox Engine of The Month
July-2021
Kim's

"Rusty's RR-1 runs up on the Q-Tee on a beautiful Summer S.M.A.L.L. Day."




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Engine MP Jet .061 Empty Engine MP Jet .061

Post  MauricioB Thu Mar 22, 2018 11:27 am

I was watching this engine, and they indicated a couple of videos, including one of Rusty's, then I see two positions of the cylinder cover, in the same video the cylinder cover is initially placed correctly as it comes from the factory, and immediately afterwards the cylinder lid is seen in the same video in another position.
I do not understand exactly what happens and I turn here and Rusty if you can comment on that detail, because the video is very interesting.
Thank you!

Photo 1:
Cylinder cover in normal position: grooves parallel to the wind flow.
Engine MP Jet .061 Cylind10

Photo 2:
Cross cylinder cover: cooling slots perpendicular to the wind flow.
Engine MP Jet .061 Cylind11

Video:

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Post  rsv1cox Thu Mar 22, 2018 12:03 pm

I'm curious too Mauricio, that doesn't happen by accident.

Great running engine Rusty, leaned out pushing 21K.

Bob
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Post  Surfer_kris Thu Mar 22, 2018 12:12 pm

The head part with the cooling fins is a clamp that holds an insert with the glow plug. As the clamp is held by for screws you have a total of four different possibilities of placing the head. Rusty then at one point forgot about the rotation and put the fins across the airflow...

I have one where I have enlarged the RC carb a little, it will spin the APC 5.7x3 at +21000 rpm on 10% nitro. It is great little engine... Smile
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Post  MauricioB Thu Mar 22, 2018 4:46 pm

It is evident that this engine was already presented in the forum through Rusty, here I found the thread and also his answer:
Wink
https://www.coxengineforum.com/t3259-breaking-in-the-mp-jet-061#54621
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