The postman came today

rhardcastle wrote:Actually,  now that I'm looking at it closer,  is the rotary valve engine a teedee. 51?  

-Rob

If you don't mind non-original, Matt has this.
http://www.exmodelengines.com/product.php?productid=18272&cat=266&page=2

I bet that golden bee has a 3 piece piston. Has bright backplate which is a good indication.

Nice looking pack of vintage bees and TD , have fun with them!

Jason_WI wrote:I bet that golden bee has a 3 piece piston. Has bright backplate which is a good indication.

What up with a 3 piece piston? Are they better or just older, the "old fashion way" of attaching before the ball and socket method was used?

Is the case pinkish gold, or is just the tank, looks like just a Golden Bee tank?
Lol, looks like some kid had mixed and matched a lot of parts, would be fun cleaning them all up and match up stock as possible.
The early pistons are not as good as later ones, theres a lot of slop in 'em.

rhardcastle wrote:Actually,  now that I'm looking at it closer,  is the rotary valve engine a teedee. 51?  

-Rob

Very Nice Haul!!!! lots of fun in your future!!

Congratulations Rob!!



Pure Cox gold! Nice deal for $66 bucks.. for sure! I'll bet that most of the glowheads are good. A couple more glowheads and some crankcase gaskets.. and you'll be good to go! Those engines probably all have the beryllium-copper type reed. If you're careful.. you can reuse them. If a reed is stuck to its seat with dried-fuel, soak it with clean fuel until it can be lifted with the point of a hobby-blade. Once removed; I usually place the reed on a "tissue".. and use a fuel-soaked cotton-swab (Q-tip) to wipe both sides clean. As long as a reed isn't "creased".. it should work fine.

I'd be curious after being cleaned-up; whether one of those crankcases will color-match (anodizing) the "pinkish-gold" 8cc tank shown top-center in the photo. It's almost a nickel-tone.. in color; as compared to silver. As mentioned; that color anodizing indicates a 1st-generation Golden Bee. Later engines had yellow/gold-tone anodizing. Some rubbing with a clean/glow-fuel soaked rag will safely remove any surface-crud. A nylon-bristled brush (tooth-brush size) dipped in a small cup of glow-fuel, won't scratch .. and is great for cleaning between the cooling-fins on the cylinders and glowheads. It's best to wear safety-glasses and protect surrounding areas from fuel-spatter.

Nice haul there. Looks like some nice engines waiting for a cleaning and run.

At first look just the tank is that color.   The piston is stuck,  I did get the head off and it just looks gummed up.

The interesting thing about these engines is that every one has the single larger exhaust port per side instead of the two smaller slots,  including the dragonfly.   Also,  they all seem to have the milled shape for a muffler or throttle ring.  

I have another dragonfly and it has the two smaller slots.   Does anyone know if they came in multiple exhaust configurations?

-Rob

Rob as I see some of  these are the earlier thin wall and stepped wall cylinders, my favorits while the new thick wall and slit exhaust cylinders are less classical...

The thin wall cylinders are not suitable for throttle ring application. The stepped wall and especially thick wall ones are those that work with throttle rings well because their largest external diameter necks fit the throttle ring and restrict exhaust flow when the ring closes the exhaust ports.

Hey Rob Welcome to The Forum if you look at the bottom of the piston on the engine with the Venturi and take that you call a rotary valve engine the TD's typically had one or two grooves and the bottom of the Piston skirt I know on the killer bee engines I've already seen two grooves on the bottom of the skirt growing up with the Cox gas powered cars I've seen many different dimensions of cylinders as examples also if you look inside the cylinder where it is milled out for the intake and exhaust for the fuel to come in and out of the engine you will probably find the dragonfly is mailed out and the TD is milled out more than any of the other engines I guess the best way to describe it would be single and dual Port induction I had a TD cylinder on a Cox Jeep Iran years ago and it ran so fast and strong it through the connecting rod through the side of the aluminum crankcase I also did see years ago a killer bee 04 9 on eBay that cranked up to 22000 150 RPMs get those bad boys up and running

Also I don't know if it was by the late 70s or early 80s but Cox change the cylinders to where are the exhaust ports have two slits per side of the cylinder I have spoken to many hobbyists and collectors in the last 20 years of collecting and Rumor Has It that some kid was running a Cox engine and a spark flash of fuel flew out of the side of the engine and got him in the eye I have a new in box Texaco o49 engine and killer bee 51 engine if you ever should be interested

Sorry guys, was in Austin for work this past week, so coming back to this.

I can confirm that the TeeDee appears to have 1 groove near the bottom of the piston skirting. I did not do anything with the golden bee yet, but got some of the baby bees turning by heating them up and then oiled them. I will fiddle with the golden bee over the weekend at some point and let you know what it looks like, overall really good shape, it just appears to be stuck from old fuel.

-Rob

Got this in the mail yesterday. Not perfect but felt the nelson plug and adapter was worth $15.00 shipped. Has a no. 8 cylinder single port.

Bill steklenski wrote:Also I don't know if it was by the late 70s or early 80s but Cox change the cylinders to where are the exhaust ports have two slits per side of the cylinder I have spoken to many hobbyists and collectors in the last 20 years of collecting and Rumor Has It that some kid was running a Cox engine and a spark flash of fuel flew out of the side of the engine and got him in the eye I have a new in box Texaco o49 engine and killer bee 51 engine if you ever should be interested

yep, pretty close, it was '78 when they went to the slit ports. lol, i'm sure there were a lot of complaints of li'l Jr. burning themselves from fires.

I posted this in my other thread but felt like i should put it here as well to continue the conversation.

I got an older golden bee crankcase to go with the tank I got 2 weeks ago, I still need to check it to see if it has the 3 piece piston. On top of that I got an rc bee from ebayon the plane wifi while I was in the air.

-Rob

rhardcastle wrote:I got an older golden bee crankcase to go with the tank I got 2 weeks ago, I still need to check it to see if it has the 3 piece piston.

-Rob

I may have missed something here, but I'm pretty sure that the early Babe Bees used a 3 piece piston but I'm not aware that the Golden Bee did the same. Unless any engine is complete and original (proven) then it's not really going to be collectable. I would suggest this would be the only thing exciting about having a 3 piece piston. It certainly wouldn't be a wise choice for any parts-engine that is expected to perform well.

My early Golden Bee has the older piston

Well, not that it matters too much, but the early 3 piece piston was discontinued around 1957 and the Golden Bee was developed in 1957 but produced in 1958. So it’s quite possible that 3 piece pistons could have been installed. Doug’s version is a fine example and I doubt anyone would have went out of their way to install an inferior piston and leave the rest bone stock and correct. However, the info I just spit out is from online reading and not fact, so who knows. Maybe Mud or Mark could clear things up.

I have an early one identical to Doug’s. I suppose I could crack it open and look.

Ron

I was always under the impression the RR-1 came out first which would've been in the 57-58 time frame and the Golden Bee was introduced in the early 60's. I could certainly be incorrect on that as I use old model magazines as a reference and I have found them not to be correct at times.

Ya Ron break it down when you have a chance and take a look.
I ran mine for the Tube