Cox cylinder

crankbndr Sun Jan 22, 2012 6:49 am

I was wondering what engines this cylinder came on. Cant find out much about it. Its a sub-induction cylinder, 2 bypass with 1 boost per bypass and the top exhaust port
is smaller then the bottom. It has a 1 on it.

Cox cylinder Img_0714

**Cribbs74** Sun Jan 22, 2012 7:01 am

Wikipedia site says black widow pre '96 and Medallion. Yours has slits though..... Huh...

nitroairplane Sun Jan 22, 2012 7:02 am

Well it is a late number 1 cylinder.
not sure what it came on as it is not mentioned on the table.
http://en.wikipedia.org/wiki/Cox_model_engine#Cylinders

crankbndr Sun Jan 22, 2012 7:09 am

The way the piston fits it seems to be tapered, but not sure.

**Cribbs74** Sun Jan 22, 2012 7:12 am

crankbndr wrote:The way the piston fits it seems to be tapered, but not sure.

I guess slit exhausts are a later post '96 type thing. Tapered fits are usually found on the TD no?

**Cribbs74** Sun Jan 22, 2012 7:21 am

Upon further review, apart from the numbering it has all the attributes of a '96 killer bee to include the taper grind.

**Admin** Sun Jan 22, 2012 1:16 pm

It sounds and looks like you have a Killer Bee cylinder. It is tapered? A Killer Bee cylinder is a 2 bypass, 1 boost port on each bypass, top fin milled, has SPI, has tapered grind. I have no idea why it has a #1 on it. I have seen a mix of different numbers stamped on slit cylinders and post Estes cylinders (you may have a post Estes cylinder).

https://sites.google.com/site/coxenginecollection/choosing-a-cylinder

Cox cylinder -1412

My Killer Bee .049 Cylinder

**RknRusty** Sun Jan 22, 2012 7:54 pm

Unless there are some very early slit cylinders I don't know about, a slit cylinder doesn't "have" SPI. It's only the piston skirt height that makes the set SPI, not the cylinder. In other words, if a slit cylinder set has a non-SPI piston, it's non SPI. If the same cylinder has an SPI piston, then it is SPI. Maybe some early slit sets were made with lower exhaust ports, but they wouldn't work well with a short piston from the newer SPI sets.

crankbndr Mon Jan 23, 2012 6:10 am

Here is another oddity I found in my stack of stuff, piston with swirls in the top. Came on a Black Widow.

Cox cylinder Img_0715

Jaspur_x Mon Jan 23, 2012 6:16 am

That piston is interesting,I never got 1 of those yet.

dckrsn Mon Jan 23, 2012 6:38 am

That's one for the books. I too have never seen one of those. I'm still not sure
I've seen one.
Bob bounce

PV Pilot Mon Jan 23, 2012 7:11 am

Time travel piston.

Godsey3.0 Mon Jan 23, 2012 7:40 am

That is weird. I have seen something like that somewhere. It was a long time ago (for me at least). Around the time I got my first engine and was researching how to use it.

**Admin** Mon Jan 23, 2012 8:08 am

crankbndr wrote:Here is another oddity I found in my stack of stuff, piston with swirls in the top. Came on a Black Widow.

Can you take a picture of the inside of the piston, that design is commonly seen on lightened pistons. Did it come with that cylinder? My friend used my killer bee cylinder and piston with his black widow for his winter comps, worked well but he somewhat messed up my set.

Jason_WI Mon Jan 23, 2012 8:10 am

Looks like the Whirlpool galaxy. Very Happy

crankbndr Mon Jan 23, 2012 8:13 am

Sure will, it came on a new Black Widow with plastic backplate with that cylinder.

nitroairplane Mon Jan 23, 2012 12:20 pm

I believe some venoms had that but it is usually much less pronounced.

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