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MauricioB's

"Cox Tee Dee .010"



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My well used medallion!

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Happy My well used medallion!

Post  TDbandit on Thu Apr 09, 2015 9:56 pm

Hi folks here's a video of my medallion Burning some nitro I cleaned it up a few weeks ago (It was gum seized) and this is it's first run after tearing er down. Fuel is the new Cox Super Power fuel in 25%, Prop is a cox grey 5x3 enjoy! Babe Bee .049  Very Happy (Bandit)
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Post  RknRusty on Thu Apr 09, 2015 11:12 pm

Ain't that Medallion a sweet engine! Great video, thanks for showing us. I really should get another one. I have one that I haven't used lately, but if you gotta have a spare Cox engine, the Medallion is the one you want.

If you like bench run videos, you might like my MP Jet .061 break-in video.
Rusty

https://youtu.be/04SLyIgT8lI


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Post  balogh on Fri Apr 10, 2015 12:45 pm

Nice run Rusty. How does this MP compare to a NV BigMig in terms if output and what size prop did you have on it?

Why are the head fins standing across the airflow?

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Post  RknRusty on Fri Apr 10, 2015 1:30 pm

balogh wrote:Nice run Rusty. How does this MP compare to a NV BigMig in terms if output and what size prop did you have on it?
Although I've played with it on the bench, I've never flown it. The T-28 mentioned in the video turned out to be falling apart too much and is now an ornament. I also have a ball bearing factory Race Special version of the same engine that I haven't flown yet either. I'm getting started on some Stuntman 23s and will probably use the one in the video on one of them.

balogh wrote:Why are the head fins standing across the airflow?

I can't come up with a smart answer for that. There are a couple of threads on these in the Engine discussion forums.
Rusty

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Post  TDbandit on Fri Apr 10, 2015 2:06 pm

Nice!! I've never payed much attention to the little MP's but after seeing one run, now i want one starts real nice and turns up a storm! Is it bushed or ball bearing?? (Bandit)
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Post  rogermharris on Fri Apr 10, 2015 3:12 pm

it appears to me that the head was installed improperly. the head bolt pattern is symmetrical so you should be able to remove the head bolts and rotate the head 90 degrees
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Post  RknRusty on Fri Apr 10, 2015 10:24 pm

TDbandit wrote:...Is it bushed or ball bearing?? (Bandit)
This one is a plain bearing. I have a BB factory race special version too.

I just put the head on wrong in my haste to make a movie.
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Post  Surfer_kris on Sat Apr 11, 2015 7:57 am

balogh wrote:Nice run Rusty. How does this MP compare to a NV BigMig in terms if output and what size prop did you have on it?

The MP Jets are great engines, very sturdy and perhaps a little bit more powerful than the NV .061, in my experience. I have an old and worn BB one that does close to 20000rpm on an APC 5.7x3 prop (10%Nitro), with the stock RC carb and muffler. That is actually close to 100W, from a completely stock engine. Smile

The DG racing tuned one will do +23000 rpm on the same prop. affraid

Once you dare to try something else than cox, it is very hard to go back...
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Post  fit90 on Sat Apr 11, 2015 9:35 am

The MP Jet .061's will also very happily swing bigger and higher pitched props. A 7X3 is well within the capability of these engines. This gives the option of way more thrust than we are used to seeing from our little engines.
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Post  balogh on Sat Apr 11, 2015 2:06 pm

[quote="Surfer_kris...............

Once you dare to try something else than cox, it is very hard to go back...[/quote]

I tried with the NV 061 Big Mig  but managed to easily return... lol!
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Post  Cribbs74 on Sat Apr 11, 2015 2:48 pm

There was a time that I thought Medallion engines were of lesser importance, but after having owned a few I find them to be quite suitable as "everyday" engines.

The beauty of them is you can swap out the cylinder and head for a TD unit and pick up a couple revs and still be able to run off of a hard tank.

TD's are superior in performance, it's just they lack suction making bladders the better choice for them. Hard tanks are easier to fill in a hurry and don't blow up in my face.

Not knocking bladders mind you as a good bladder run can't be beat.

I wish I had a couple more Medallions to mess with.

So Bandit, now that it runs well, what's your planes... er... plans?

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Happy Re: My well used medallion!

Post  TDbandit on Sat Apr 11, 2015 8:57 pm

Cribbs74 wrote:There was a time that I thought Medallion engines were of lesser importance, but after having owned a few I find them to be quite suitable as "everyday" engines.

The beauty of them is you can swap out the cylinder and head for a TD unit and pick up a couple revs and still be able to run off of a hard tank.

TD's are superior in performance, it's just they lack suction making bladders the better choice for them. Hard tanks are easier to fill in a hurry and don't blow up in my face.

Not knocking bladders mind you as a good bladder run can't be beat.

I wish I had a couple more Medallions to mess with.

So Bandit, now that it runs well, what's your planes... er... plans?


It's destined for my Brodak Wildcat I was going to put my TD in it but figured that the medallion might be a better choice for the time being. Anyway, It doesn't lack much just got to have some time to do it which I've been kinda short of lately. (Bandit)
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