Queen Bee starting challenges | It runs!

I use model technics gn-25. Which containes 55%methanol 25% nitro and 20% castor.

It is opened for 2 years now. (fuel is hard to get here). a surestart start without any problems on it. But thats in its name

Hmmm I use the same fuel.
It is odd, Have you checked your gaskets?

I do not see any mixture leek trough the gaskets. And the engine is brand new

mr_cox wrote:I do not see any mixture leek trough the gaskets. And the engine is brand new

This is odd but maybe you should tear it down and dry it out completely then assemble and re oil.

Try a different plug. Could be stale fuel. Sometimes one engine will run and another will not on bad fuel.
dan

Will try a new glow plug. However it stills glow bright.

One problem. The old style glow head have such a small diameter glow plug hole that my tool dus not fit around the glow plug. The hole on the corona model is much bigger!

Have someone seen the head that i have on my queen bee runner before?

Thank you!

2 yr open fuel,. Methanol absorbs moisture and if it is a clear plastic jug you get the greenhouse effect with any sunlight on it (you can actually see water droplets form in the jug). Sig has a clear jug, and that immediately was poured into my old O'Donnell white jugs I saved.

If it was kept cold and dark, with the volume squeezed up to the cap then quickly capped, it should run OK tho'.

mr_cox wrote:Will try a new glow plug. However it stills glow bright.

One problem. The old style glow head have such a small diameter glow plug hole that my tool dus not fit around the glow plug. The hole on the corona model is much bigger!

Have someone seen the head that i have on my queen bee runner before?

Thank you!

I am sorry I do not understand that.
Do you not have a standard glowplug wrench?

You have to remove the glow plug (not the glow head!) with a normal glow plug tool.

like this one:



It will fit around the glow plug, however not in the hole of the glow Head! (smaller diameter hole than the corona one, as you could see on the picture.)

The fuel is stored in a white 500ML can. Stored in a dark place between 14~18 C. In summer it could be around 30 c

Maybe the fuel is to old and the nitro evaporated. Will use next time the tip to squize the fuel to the top of the can. My black widow, sure start and medallion .09 runs normal on it.

Want to use the queen bee in a lazy bee.

Hm yes it comes in a plastic container with a red top right that is how mine comes.
The ones that I buy never really seal well and the fuel tends to go cloudy after a while (moisture)
I suppose you would have to grind down the outside of the tool to make it fit.
You should be able to fly a lazy well if you keep it light.

I have had several back in the day, never started super easy.
I always had to start them wide open throttle and my finger over the intake for a couple of prop flips to get a good prime with the muffler on,or I pulled the glowplug and a drop or 2 in the cylinder.
The original old style head was intended for the cox wrench that comes with the QB to be used on the glowplug, for better results switch to a flat ciol style plug like merlin sells,I like those a lot. The plug sticks above the head just far enough to use the cox wrench.
My Corona Ca cox plug has the bar protecting the coil, the santa anna does not;otherwise the same,not black.

Nitroairplane, not to be a jerk or argue, but the QB 074 was never a performer, just a sport engine even with a 5" or 3 blade prop, have you had a queenbee 074?
mine (3 or 4) were all basically an overweight blackwidow049 equivalent,owhere a teedee,even with the flatcoil plugs. My G-mark061 was more potent that the QB074,thats why I got the G-mark for my ace wizzard. I liked them on my airboat though.


Flying models magazine did a piece on the h.o.b. stealth sport and flew that with a queendee 074(around `86 or `88 or so) and liked it for a sport engine,nice throttling but not really more power than a black widow 049, very nice throttling though.

I havn`t even ran mine in years,but still have them.

WIll give it a try in a couple of hours!

Cant wait to see it run. WIll use your tips.

Jaspur, could you confirm that my Queen Bee is genuine Cox?

I always had good luck starting easy with mine once you get the priming method down, they jusy never blew my skirt up and were better suited to lighter built planes than I had at the time back in the old days.The ace alpha and wizzard were not light planes.

Confirmation, is it sure looks like mine from what I can see,especially the santa anna head`s design. I do believe that estes continued the production,or at least that it was offered in `96 catalog. But the older head design should be for sure a real cox.
Mine are old enough that I`m pretty sure I do not have the newer head design,bought my last 1 in `91,and who knows how long the local shop had it on the shelf.

If everything else runs fine on your fuel, it's probably just a stubborn queen bee.

I had a couple other heads in the past that were tight to the glow plug and ended up grinding down the Dubro plug tool to fit down inside the well.

Jaspur_x wrote:I have had several back in the day, never started super easy.
I always had to start them wide open throttle and my finger over the intake for a couple of prop flips to get a good prime with the muffler on,or I pulled the glowplug and a drop or 2 in the cylinder.
The original old style head was intended for the cox wrench that comes with the QB to be used on the glowplug, for better results switch to a flat ciol style plug like merlin sells,I like those a lot. The plug sticks above the head just far enough to use the cox wrench.
My Corona Ca cox plug has the bar protecting the coil, the santa anna does not;otherwise the same,not black.

Nitroairplane, not to be a jerk or argue, but the QB 074 was never a performer, just a sport engine even with a 5" or 3 blade prop, have you had a queenbee 074?
mine (3 or 4) were all basically an overweight blackwidow049 equivalent,owhere a teedee,even with the flatcoil plugs. My G-mark061 was more potent that the QB074,thats why I got the G-mark for my ace wizzard. I liked them on my airboat though.


Flying models magazine did a piece on the h.o.b. stealth sport and flew that with a queendee 074(around `86 or `88 or so) and liked it for a sport engine,nice throttling but not really more power than a black widow 049, very nice throttling though.

I havn`t even ran mine in years,but still have them.

I had a QB and ran usually with a top flite 6x3 I found it liked that prop and was easier to start with it.

It just started.

WIthout muffler, primed in the air intake and on the piston. Had to try this several times. With every start I opened the needle valve with a 1/4th turn. At a several moment it kept running! Had to shut it off as it was inside the house.

After this run I noticed that I opened the needle 5,5 turn! Cox says in its manual to open the needle valve 3 turns, which they say would be rich!

Then i tried to start the engine outside the house. However my 2V (with long wires to get enough resistance) 5AH battery is flat. So I have to charge it one night first.

Keep you posted!

That is good news.
Give it a good long break in and it should become easier to start.

Thats good news it started!! Isn`t that the way it always is with rechargable batteries. Enjoy the QB though

The cox motormounts fot the QB were decent, making my own was a pain back in those days lol

Hope to get it running right tommorow, with muffler. WIll give it a good break in, Will start rich at low RPM and will increase a bit with every minute.

When i flip the prop over i hear a little "tick". Noticed that i could move the rod of the piston about 0,5MM. Is it possible that it need a reset without any runtime?

I got a .09 reset tool. Will it fit the queen bee?

Best regards.

Bastiaan

I dont think a .09 will reset a QB yes it is possible if this engine just was not made very well in the first place which would explain the tricky starting.

Just grapped some new sure starts pistons. They have about the same play on the rod. So I hope it is not a problem. However you can hear it. Will try it tommorow again.

Hoped that the .09 had the same diameter, only a different stroke.

Best regards, Bastiaan

No I sure they have a different diameter too.

I don`t remember cosx rver making a reset tool for the 074,I customized an 049 reset tool to work.

It could be just that new and tight of a pinch at tdc (hopefully) try it with the head off or plug out after a couple drops of lube in the cylinder and directly dripped into the socket and worked in if you are really in question.