Re: Still runs after 25 years

PV Pilot Wed Oct 26, 2011 1:45 pm

[quote="TailSpin74"]

PV Pilot wrote:
CLSSY56 wrote:Total time from LHS shelf to dog toy was about 3 hrs.

That's funny. I remember being so disappointed on how the F-15 flew.

Yup, it was a slug and you had to wait on it,,meaning very careful inputs until it came up to stable flying speed. And even then they had to be minute intputs or it would bleed said speed off and get wobbly. Way to much drag on that unit.

When it hooked the dog it was slingshotting and picking up speed,,amazingly.

Godsey3.0 Wed Oct 26, 2011 5:50 pm

My Golden Bee has a W Filament Glow Head. What is the importance of this?

nitroairplane Wed Oct 26, 2011 5:53 pm

They are rarer than normal.
And have shorter lives so you may want to swap it for a coil because unburnt "w" heads are rare.

Kim Wed Oct 26, 2011 6:43 pm

TailSpin74 wrote:How can you tell one cylinder from the next? I've noticed some have large ports and some have slots.

Hey Tailspin...it may be late in the thread to post this, but thought I'd include it. It's from Warren's Wikipedia Page on Cox Engines:

http://en.wikipedia.org/wiki/Cox_model_engine#Cylinders

WingingIt74 Wed Oct 26, 2011 8:33 pm

Kim wrote:
TailSpin74 wrote:How can you tell one cylinder from the next? I've noticed some have large ports and some have slots.

Hey Tailspin...it may be late in the thread to post this, but thought I'd include it. It's from Warren's Wikipedia Page on Cox Engines:

http://en.wikipedia.org/wiki/Cox_model_engine#Cylinders

I don't remember that site having that much info. Maybe I didn't read all the way.

Here is what I have:

• #2 Cylinder (installed), and has the wrench reliefs on the top of the head, no bypass port
• #2 Cylinder, doesn't have any wrench reliefs, no bypass port
• #3 Cylinder (standard)

Still runs after 25 years - Page 2 Attachment

Still runs after 25 years - Page 2 Attachment

**Admin** Wed Oct 26, 2011 9:36 pm

Still runs after 25 years - Page 2 Looks_10

You have to agree the head looks like it has a grove in the top of it from this picture. After you said it didn't, I figured it could have been dirt or a scratch.

This is the W filament head.

I have some cylinder charts here> http://sites.google.com/site/coxenginecollection/choosing-a-cylinder < and some more info here> http://sites.google.com/site/coxenginecollection/thinner-cylinder

By the way, do you have a copper o ring under that head, its not in the cylinder on that one picture.

WingingIt74 Thu Oct 27, 2011 2:41 am

Admin wrote:By the way, do you have a copper o ring under that head, its not in the cylinder on that one picture.

After looking at pics today, I noticed that also. No, I don't have one.

Also, none of my cylinders have a number on them. I got the numbers from the wiki page. Looking at your page as well, I don't see a cylinder with slits that doesn't have a booster port. Both I have do not have a booster port.

WingingIt74 Thu Oct 27, 2011 8:47 am

TailSpin74 wrote:What's better, a throttle collar or a surestart style throttle?

Any thoughts on this?
Still runs after 25 years - Page 2 Throttle%205-01

or this?

Still runs after 25 years - Page 2 Image

nitroairplane Thu Oct 27, 2011 8:50 am

Personal preference.
I have only used the throttle sleeves and can say that they are great.

WingingIt74 Thu Oct 27, 2011 9:02 am

If I remember correctly, thinking back to the mid-late 80s, there also was another version (before the surestart style) that adjusted the air intake from behind the motor mount. It used a cone shape plunger.

The only reason why I remember that is when I bought the throttle collar, the LHS talked me into the collar over the air intake version.

nitroairplane Thu Oct 27, 2011 9:36 am

I have never seen or heard of one of those. Do you have a picture?

WingingIt74 Thu Oct 27, 2011 9:39 am

nitroairplane wrote:I have never seen or heard of one of those. Do you have a picture?

Only in my head Smile

It has been ~25 years LOL.

nitroairplane Thu Oct 27, 2011 9:39 am

TailSpin74 wrote:
nitroairplane wrote:I have never seen or heard of one of those. Do you have a picture?

Only in my head It has been ~25 years LOL.

S IT LIKE THE TARNO ONE HERE ?
http://www.mh-aerotools.de/airfoils/cox_frameset.htm

WingingIt74 Thu Oct 27, 2011 9:44 am

When I got this motor from my cousin and his late father, it did come with a tank of this. I was in 7th grade at the time... LOL... that brings back memories. I ran that can empty and I decided to see if I could get it to puff some flame out of the end with a lighter. Well, it sure did, burned my thumb holding the lighter and collapsed the can... Got to learn right, LOL?
Still runs after 25 years - Page 2 Cox_fuelcan_1

Still runs after 25 years - Page 2 Cox_fuelcan_1

nitroairplane Thu Oct 27, 2011 9:46 am

I do believe that is a 60's can.

WingingIt74 Thu Oct 27, 2011 9:49 am

Wish I would have not done that and just saved the can, oh well.

WingingIt74 Thu Oct 27, 2011 9:51 am

nitroairplane wrote:
TailSpin74 wrote:
nitroairplane wrote:I have never seen or heard of one of those. Do you have a picture?

Only in my head It has been ~25 years LOL.
S IT LIKE THE TARNO ONE HERE ?
http://www.mh-aerotools.de/airfoils/cox_frameset.htm

No not like this, it was not a carb so to speak
Still runs after 25 years - Page 2 Cox_tarno_rear

nitroairplane Thu Oct 27, 2011 9:53 am

Ok so just an air restrictor?
It sounds odd could it have been a part made by the shop?

PV Pilot Thu Oct 27, 2011 10:07 am

TailSpin74 wrote: I ran that can empty and I decided to see if I could get it to puff some flame out of the end with a lighter. Well, it sure did, burned my thumb holding the lighter and collapsed the can... Got to learn right, LOL?

WOW!

We use to make empty plastic race jugs shoot across the track. Wink

nitroairplane Thu Oct 27, 2011 10:20 am

PV Pilot wrote:
TailSpin74 wrote: I ran that can empty and I decided to see if I could get it to puff some flame out of the end with a lighter. Well, it sure did, burned my thumb holding the lighter and collapsed the can... Got to learn right, LOL?

WOW!

We use to make empty plastic race jugs shoot across the track.

I used to fill pinpong balls with propane and light them leaving only a 1mm hole and they would fly across the room a bit like a simple pulsejet.

WingingIt74 Thu Oct 27, 2011 10:22 am

nitroairplane wrote:Ok so just an air restrictor?
It sounds odd could it have been a part made by the shop?

I don't think so. It wasn't as beefy as the throttle sleeve though. I remember you had to take the screen off the back of the engine.

nitroairplane Thu Oct 27, 2011 10:25 am

TailSpin74 wrote:
nitroairplane wrote:Ok so just an air restrictor?
It sounds odd could it have been a part made by the shop?

I don't think so. It wasn't as beefy as the throttle sleeve though. I remember you had to take the screen off the back of the engine.

Ok i'll keep my eye out for designs like that.

**Admin** Thu Oct 27, 2011 10:34 am

Was it black and the shape of a Babe Bee backplate? Did it also have a hole in the center with a rod coming out of the back. I remember seeing those, I believe they were made by Kavan.

WingingIt74 Thu Oct 27, 2011 10:35 am

Could have been...

nitroairplane Thu Oct 27, 2011 10:50 am

Kavan make a lot of accessories for cox engines dont they and they are german.

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