Piston and Cylinder life of Cox Engines

Darren19 Fri May 10, 2013 6:58 pm

Does anyone know more or less the service life of a brand new cylinder in a Cox engine? Assuming of course all correct fuel and Castor oil rations are observed. The engine is maintained clean etc? So would it be 10 hours 20 or less than this?
Thanks!
Darren

SuperDave Fri May 10, 2013 7:07 pm

I have several original and well-seasoned BW's that have hundreds of hours on them and are still stronger performers if that answers your question aboutabout "service life".

SD

Darren19 Fri May 10, 2013 7:15 pm

It sure does Dave. So in other words if cared for properly they can last for ages. That is good. Sorry for my ignorance could be so kind as to tell me what BW stands for.
Thanks!
Darren

**Cribbs74** Fri May 10, 2013 7:21 pm

BW= Black Widow

Darren19 Fri May 10, 2013 7:23 pm

I should have got that myself. Thanks for claification!

**RknRusty** Fri May 10, 2013 7:28 pm

And most(not all) BW cylinders have a #1 stamped somewhere on them. Without the number stamp a caliper measurement across the internal dual port's width identifies it. I have one with no number. Some are stamped in the face of the corner of the exhaust port.

**Cribbs74** Fri May 10, 2013 8:15 pm

Dave is correct they can last a long time with the proper care. I have fragged a few while learning the in's and outs as has everyone here I imagine. A few lean runs could ruin a cylinder.

Breaking things is learning. I would pick up some spares from Matt or Bernie when you have the chance just in case.

Thanks for asking all the questions, keep em coming.

Ron

EXModelEngines Sat May 11, 2013 10:11 am

cribbs74 wrote:Dave is correct they can last a long time with the proper care. I have fragged a few while learning the in's and outs as has everyone here I imagine. A few lean runs could ruin a cylinder.

Breaking things is learning. I would pick up some spares from Matt or Bernie when you have the chance just in case.

Thanks for asking all the questions, keep em coming.

Ron

Listen to Ron on this one. While you do not need to break a Cox engine in like some of the larger engines, it is a great idea for extending the life. Run it rich for 3-5 tanks before leaning the needle out too much. They can last a long time on modest nitro (25% or less) and correct oil content (at least 20% total, half of which should be castor).

If you are planning to race the engine with a very high nitro while leaning it out as much as possible, you will do through many more cylinders/pistons/glow heads.

Matt

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Piston and Cylinder life of Cox Engines

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