my little "mystery" engine...

roddie Sun Sep 01, 2013 5:22 pm

This engine looks to be of .049 displacement... but I don't know what it is. Not having a "defined" mount; I assume it was produced for an old plastic RTF model... "Testors" maybe? It has a spring starter.

my little "mystery" engine... Myster10

JanPar Sun Sep 01, 2013 5:42 pm

You are correct. It is a Testors. Some came with a tank attached. They are reed valve.

Some are referred to as "Pipe Bomb"

roddie Sun Sep 01, 2013 5:48 pm

JanPar wrote:You are correct. It is a Testors. Some came with a tank attached. They are reed valve.

Some are referred to as "Pipe Bomb"

Thank you for that Info. JanPar!!

sdjjadk Tue Sep 03, 2013 10:17 am

JanPar wrote:You are correct. It is a Testors. Some came with a tank attached. They are reed valve.

Some are referred to as "Pipe Bomb"

Yep. They used them in the "Fly'EM Series planes as well as the "Fast Ones" series cars (sans spring starter)

Here is a video of my Testors Volkswagen called "The Super Pick Up" that was part of the Fast Ones series.

Shawn

roddie Tue Sep 03, 2013 10:31 am

Very COOL vid Shawn... and it was a "fast one"!!! When it "leaned-out" at the end; I could see the rear-end start to drift!!! I assume you run it "rich" to preserve the little motors life... or... maybe it spins-out at higher revs, with that tight of a steering radius? I noticed it was a small paved area... Have you ran it in a BIG parking lot... say; in an a vacant ind. park lot, on a weekend?

I have heard that Cox glow-heads fit this engine, and can be used... Is this true? Does it use the same "reed" as well?

sdjjadk Tue Sep 03, 2013 10:42 am

roddie wrote:Very COOL vid Shawn... and it was a "fast one"!!! I have heard that Cox glow-heads fit this engine, and can be used... Is this true? Does it use the same "reed" as well?

Hi Roddie thanks for the compliment. Smile

A lot of people underestimated the Testors brand engines but if you use the right fuel, they run like a champ!
As far as the glow head goes, no they will not fit Cox cylinders. The threads are bigger than the Cox. Also, I can't remember, but I think the reeds are different as well. In fact, there is pretty much nothing interchangeable between the two brands. Even prop shaft's are bigger on a Testors engine. The only thing compatible parts wise are some of the McCoy and Wen Mac .049's.

Shawn

roddie Tue Sep 03, 2013 10:49 am

oops... I was editing post when you replied...

roddie Tue Sep 03, 2013 10:53 am

The correct fuel... would be?

roddie Tue Sep 03, 2013 10:55 am

I have an un-opened qt.

my little "mystery" engine... Testor10

sdjjadk Tue Sep 03, 2013 10:59 am

roddie wrote:The correct fuel... would be?

Testors engines seem happiest on 15% with synthetic lube. In fact, one of my Testors engine manual states "NO Castor Oil or warranty would be voided" Those engines never ran very well on Cox blend fuel. I think the reason being is, Testors , McCoy and Wen Mac engines had higher compression than Cox which would explain the lower nitro needed to run well.

sdjjadk Tue Sep 03, 2013 11:04 am

roddie wrote:I have an un-opened qt.

That's cool bit of nostalgia there. WOW $1.93 for a quart of fuel! Those were the good O'l days. Smile

Although, I would think that fuel is most likely gone bad due to age. If it were me, I wouldn't use it.

Shawn

kevbo Tue Sep 03, 2013 11:05 am

I had one of the testors teather cars back in the day. It ran fine on whatever cox glow fuel was in the mid 70s. Probably 20% castor and 15% nitro. The metallurgy is cox like, but tolerances were not even in the same league. Pretty sure the crankcases are pot-metal (AKA Zamac) rather than aluminum.

The instructions warned that running screaming lean ( as I ran cox engine then and now) would damage these engines. Just barely two stroking was the recommended needle setting.

roddie Tue Sep 03, 2013 11:11 am

So I guess; running that little gem of a volkswagon on any modern 15% fuel with full synthetic is fine? The pic I posted... was that fuel designed for their models like yours?

sdjjadk Tue Sep 03, 2013 11:14 am

kevbo wrote:I had one of the testors teather cars back in the day. It ran fine on whatever cox glow fuel was in the mid 70s. Probably 20% castor and 15% nitro. The metallurgy is cox like, but tolerances were not even in the same league. Pretty sure the crankcases are pot-metal (AKA Zamac) rather than aluminum.

The instructions warned that running screaming lean ( as I ran cox engine then and now) would damage these engines. Just barely two stroking was the recommended needle setting.

I was the opposite, I never had much luck running Cox fuel in my Testors engines. They always ran better on Testors fuel. I had a plane called a Galax IX and that thing would scream!!! Even though it was a bit on the heavy side, it flew great and landed well too. Same with the cars, they always ran well. The only one I ever had problems with was a Mustang that had the plastic "Zip Chord" starter. That thing was a pain in the #$% to use and it was a pain to get started.

Shawn

sdjjadk Tue Sep 03, 2013 11:19 am

roddie wrote:So I guess; running that little gem of a volkswagon on any modern 15% fuel with full synthetic is fine? The pic I posted... was that fuel designed for their models like yours?

At the time I made that video, I was running Cool Power 15% which is full synthetic but I also have some Glow Plug Boy full synthetic that works fine as well. And the Testors brand fuel was for cars or planes.

Shawn

roddie Tue Sep 03, 2013 11:23 am

Wow!!! that just brought back a memory... A friend of mine had a Testors Mustang with the T-handle pull-starter. (I think the plane had a chrome finish...) we never could get it started!!! but then; we were around 11 or 12 years old... (1971-72?) and had no prior experience.

sdjjadk Tue Sep 03, 2013 11:27 am

roddie wrote:Wow!!! that just brought back a memory... A friend of mine had a Testors Mustang with the T-handle pull-starter. (I think the plane had a chrome finish...) we never could get it started!!! but then; we were around 11 or 12 years old... (1971-72?) and had no prior experience.

Mine had the Chrome finish as well. I got mine for a B-Day present back in 1980. Mine came with a little glass jar of fuel, a D-cell battery and battery clip. I still have one of the fuel jars, a clip and a Testors battery. I'll find them and take pics.

Shawn

roddie Tue Sep 03, 2013 11:46 am

Check it out... no engine though...

http://www.ebay.com/itm/1971-Testors-P51D-Mustang-Control-Line-Plane-/151103626755?pt=US_Radio_Control_Control_Line&hash=item232e7a5e03

sdjjadk Tue Sep 03, 2013 2:24 pm

roddie wrote:Check it out... no engine though...

http://www.ebay.com/itm/1971-Testors-P51D-Mustang-Control-Line-Plane-/151103626755?pt=US_Radio_Control_Control_Line&hash=item232e7a5e03

That looks like the one I had except mine had yellow trim.

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