help! it wont start

nitroairplane wrote:
It is normal for a bit of oil and or fuel to come out of the crankcase.

fredvon4 wrote:In post # 2 Dave very precisly told you all you need to know

Auction sounds like e-bay

Many folks on e-bay significantly exagerate the conditiion of their goods or they really do not know what they are selling and say what other ads say....odds are you got a well used small engine (if fuel is really puking from the crank at thrust bearing)

No way from your post to know what cox engine. We asume not a collectable unique one, so we think typical 049

Two supporters here on this site will sell you a complete bottom end for under $7 a real good deal...in fact they have several different configurations

They also have all the gaskets, glow plugs, and enough compete parts to build the basic 049s

Or do as I do, don't expect much from used E-bay items and buy new from these folks for not much cash at all

AT1984 wrote:microflightdude:

I found an article on "Flying Lines" about cleaning and maintaining TD .049's. It was a great help with the TD .09. I just used alcohol to soak it, and cleaned the heck out of it. I contacted the author (Barrie Hobkirk), and he was a lot of help, too.

Here's the link, if anyone is interested:

http://www.flyinglines.org/bh.teedee.html

Allen

AT1984 wrote:

fredvon4 wrote:In post # 2 Dave very precisly told you all you need to know

Auction sounds like e-bay

Many folks on e-bay significantly exagerate the conditiion of their goods or they really do not know what they are selling and say what other ads say....odds are you got a well used small engine (if fuel is really puking from the crank at thrust bearing)

No way from your post to know what cox engine. We asume not a collectable unique one, so we think typical 049

Two supporters here on this site will sell you a complete bottom end for under $7 a real good deal...in fact they have several different configurations

They also have all the gaskets, glow plugs, and enough compete parts to build the basic 049s

Or do as I do, don't expect much from used E-bay items and buy new from these folks for not much cash at all

Speaking of eBay: I recently bought a Tee Dee .09 on eBay that looked almost brand new. Here is the seller's exact quote, copied from the listing:

"This is a used Cox .09 that is very clean, it is on a nice mount and ready to run."

When I got it, it was on a nylon mount. Like I said, looked almost new. It was locked up solid! Here is what the seller wrote, after I wrote to him and told him "Ready to run doesn't mean locked up".

"Most of these locked up engines will free up quickly by putting a prop on and heating the cylinder with a hairdryer, sorry you had a problem."

Huh? I get to "free up" a "ready to run" engine? Wow...

To his credit, he did totally refund my money, no questions asked, on the spot. AFTER I start the engine, I might pay him what I think my trouble is worth. The engine does look good inside and out, but once I try to start it, we'll see. I did disassemble and clean the TD, and can't tell why it was locked up. No scoring, heat damage...nothing as far as I can tell, other than old gunked up castor...which I expected. Once reassembled it turns like brand new. I can still see what I think are factory hone marks in the cylinder. BTW, I paid less than what most TD .09's are going for.

"Caveat Emptor" is right! I might have to stay away from TD's, and start getting into .049's from the Cox dealers!

Only probelm is I really like TD's, and no one is selling them anywhere else, that I know of.

Sorry...just my "two cents worth" rant on used engines!

Allen

AT1984 wrote:Nitroairplane:

Redford? You lost me...

Allen

Laramie wrote:..... have come from ebay. I especially like buying the large lots of junk, partial engines, parts etc. I start by cleaning enough parts to build a few, than running them. My best used engines were the ones that were stuck with old castor oil. The ones that tuned & were gummed up were worn worse .....

I also buy piston/cyl. sets, gaskets, glow heads etc from the suppliers that advertize on ebay, with good results so far.

I have yet to be disapointed in my ebay purchasses, but than I dont bid very high, either.

In my expiriance, the Tee Dee engines are the hardest to get going, tune, maintain, etc. There are better NVAs from the after-market that offer better tuning. If one is new to Cox engines, there are easier ones to cut your teeth on, but the Tee Dees offer better performance.

A happy medium is the Medallion line, great for sport flying.

I cut my teeth on a red and gold tee dee .010 it was what really got me into model flying and building.
But the Baby Bee always takes me to that warm, fuzzy place .....

Laramie.