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New & Emerging R/C Helicopters > My Stinger 50

scottc
Key Veteran
Location: shakopee minnesota..USA

Here is my take on the gohbee Stingers again , I also have a stinger 30 in a Lone Ranger , i ve flown that once so far been busy .
But i did have time to get the stinger 50 and get that up and flying.
So far its a winner in my book for low cost 50 size heli.
Here is the run down on the bird. Ive got a os 46 engine in it with a weston 60 pipe and that performs very well for what iam doing at this point.
The heli comes with mah 600 mms that seem to work well , mine came with the fiber glass canopy , that iam going to paint before i use it so iam using my hawk canopy for now.
mine had the problem fan and Gohbee sent me a new one with no problems.
the ball links need to be lossened up some .
it seems to fly as well as my raptor 30 dose so iam good and happy with the Singer 50.
there is a few pics in my gallery to.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

05-24-2005 Over year old.

FLYINFOOL
Veteran
Location: Cudahy, WI

Glad you are pleased with your Stinger 50.
You will like it even more once you really get to flying it.

Jeff Borowski
Gohbee Field Rep
0133TD

05-24-2005 Over year old.

HOMEPAGE

bigbuster
Senior Heliman
Location: APO 09021 NY

Stinger 30 to 50

I have one that I converted to a 50. I have been flying it quite a bit with a Webra .52 aac and it is a rocket. It doesn't have the tendancy to pull up in fff, flies well inverted,rolls and loops well does all the basic stuff very well. I would like some harder dampners for the head are they available someplace?

Jeff

I'm hooked.......

05-24-2005 Over year old.

HOMEPAGE

scottc
Key Veteran
Location: shakopee minnesota..USA

iam thinking you can get the red(i think the red is for harder 3d) TT dampners as this is very much like the raptors.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

05-24-2005 Over year old.

bigbuster
Senior Heliman
Location: APO 09021 NY

Red TT dampners

I think they are different. The TT ones are stepped in two different diameters and the stinger ones are one diameter. I thought I heard something about yellow stinger ones.

Scott, how is your pyro rate? Mine is pretty slow, even with full tail pitch.
I will have to set on this for a while to figure this out, unless you have an answer.

Jeff

I'm hooked.......

05-24-2005 Over year old.

HOMEPAGE

FLYINFOOL
Veteran
Location: Cudahy, WI

Unfortunatly the Raptor damper is not the same as the Stinger.
I added .015 thick shims between the grips and the dampers to compress them more, and that has made a difference.

Jeff Borowski
Gohbee Field Rep
0133TD

05-24-2005 Over year old.

HOMEPAGE

bigbuster
Senior Heliman
Location: APO 09021 NY

Will the Raptor blade grips fit?

Will the Raptor blade grips fit? I wouls like to have some metal grips
even though it flies great as it is.

Jeff

I'm hooked.......

05-24-2005 Over year old.

HOMEPAGE

FLYINFOOL
Veteran
Location: Cudahy, WI

Although raptor metal grips will work, if you can wait a little while Gohbee is comming out with an all metal head for the Stinger. I am testing a prototype now, it's very nice.

I do not have any price or delivery info at this time.

Jeff Borowski
Gohbee Field Rep
0133TD

05-24-2005 Over year old.

HOMEPAGE

scottc
Key Veteran
Location: shakopee minnesota..USA

buster the pyro seems fine to me but iam not going real wild yet.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

05-25-2005 Over year old.

FLYINFOOL
Veteran
Location: Cudahy, WI

Buster,
What Gyro are you using?
I have a 401 and stock tail, and the piro rate is a blur.
If you are to slow, there are some tricks that you can use depending on which gyro you have.

Jeff Borowski
Gohbee Field Rep
0133TD

05-25-2005 Over year old.

HOMEPAGE

bigbuster
Senior Heliman
Location: APO 09021 NY

pyro rate

I have a 401/9253 but darn if I can get the rate to speed up. I will have
to get on it tomorrow. I will figure it out.

Jeff

I'm hooked.......

05-25-2005 Over year old.

HOMEPAGE

nogodznomasterz
Senior Heliman
Location: Minnetonka MN

i'm glad your gohbee 50 expirience was better than mine.
fan problem no new fan sent to me in fact i didnt even get a response from gohbee for over a month. by that time i had sold it and got an evo which i am very happy with.

05-25-2005 Over year old.

HOMEPAGE

scottc
Key Veteran
Location: shakopee minnesota..USA

I did forget to say i did have the fuel tank issue happen to me were as the tank is real thin and when putting in the engine i poked a hole in the tank SOOOO i had a Evo 50 tank sitting around and that fits in there great and gives a lot longer run time to.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

05-26-2005 Over year old.

FLYINFOOL
Veteran
Location: Cudahy, WI

Jeff
WIth your 401, set up a p-mix with rudder as master and gyro gain as slave.
Set it up so that as the amount of rudder increases the gain goes down.
What is happening is that the gyro is fighting the rudder input.
If you try this, make sure that your battery and reciever are well mounted because the piro rate can get so high as to launch the battery through the nose.
After you try this and find it to be to fast, you can either use the rudder atv, afr or the amount of p-mix to set your desired piro rate.

This has worked very well for me.

Jeff Borowski
Gohbee Field Rep
0133TD

05-26-2005 Over year old.

HOMEPAGE

bigbuster
Senior Heliman
Location: APO 09021 NY

Sceadu

If you look at the sceadu head I think the dampners might fit the stinger.
I am going to give them a try. I will let you all know.

Jeff

I'm hooked.......

05-28-2005 Over year old.

HOMEPAGE

bobc1
Senior Heliman
Location: Southern California

Gohbee Stinger 50 Report

I just sent the following message to Gohbee:

I just purchased a Stinger 50 from you a few days ago. I installed an OS50 with Futaba gear & flew several tanks through it today. I set up +/- 10 on collective, +/- 6 on cyclic. Flew OK, very stable, but very slow on roll & flip rate. I am going to try some lighter, more agressive paddles. I am running a TJ Rev Max @ 1860 headspeed. Weight is 7lbs 13 oz. without a header tank with the MAH CF 600's. Auto's pretty well.

Problems: (1)The mainshaft belt pulley runs out about .150" even though the main gear is fairly true. (2) The clutch will not release, even with a slow idle. The head must be held forcefully while carrying the heli with the engine idling. As soon as you let go, the head is spooling up, even with a very slow idle.

I dial indicated the clutch shaft and hub, prior to installation and reduced runout to less than .002", which was the best I could get it. I also had to enlarge and elongate the frame motor mount holes to prevent the clutch bell from being forced into the clutch shoe assembly & binding. My installation allows about .005" vertical movement in the clutch bell which seems to be as good as I could get it. I am not sure if the clutch shoes are just too tight on the lining that is causing the drag @ idle. I have tried several times to intentionally raise throttle while holding the head to create some wear on the lining. It seems about the same after several attempts. I am wondering if there is some other reason that the clutch is dragging such as a bad bearing. Although, this doesn't seem to be the case because the drag increases with RPM.

The heli actually flies very smooth, feels like a heavy, sluggish Evo, but the lighter paddles may liven it up some.

Any thoughts on correcting the clutch & pulley situation?

Thanks,
Bob

05-29-2005 Over year old.

scottc
Key Veteran
Location: shakopee minnesota..USA

I my self had the same issue with the clutch acting as you describe and i did the holding of the head as well to loosen the clutch lining up, seem to work ,gohbee did send me a new fan. but i took the fan i had and turned it down 00.150 thousand of and inch to fit without making the engine mount holes bigger, iam not doing autos as of yet just basic fff and loops, i did feel that the heli was faster on cyclics right out of the box , i did put in 30 % expo to smooth it out, i also added the TT snow white paddels and that made things a little faster on the cyclics but left the expo in , iam still pretty happy with the heli .

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

05-29-2005 Over year old.

bobc1
Senior Heliman
Location: Southern California

Tried the white TT paddles & increased headspeed to 1940. A lot better. The flip rate is pretty good but the roll rate could be faster. Still very stable in 15 gusting to 25 mph winds. No pitchiness (sp?) in FFF.

Cannot increase cyclic without binding. I am going to try the TT snot green paddles. They seem to work pretty well on some Raptors that I fly with.

One new problem. In less than six tanks, the FG canopy wore through the installed grommets & began wearing through the mounting standoffs. I installed the extra grommets & glued them in, moving them to the rearward position in the canopy. The standoffs had elongated the holes in the canopy. Seems like the holes should have been further back in the canopy.

So far, the clutch binding is worst problem.

05-29-2005 Over year old.

scottc
Key Veteran
Location: shakopee minnesota..USA

here is mine.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

05-30-2005 Over year old.

bobc1
Senior Heliman
Location: Southern California

Latest Gohbee 50 Stinger Report

I installed the TT snot green lightweight paddles & kept the headspeed @ 1940. Much more responsive on cyclic. Not super fast, but about like an Evo. Still flies very well, no pitchiness in FFF, just a small loss of stability. Continues to be easy to hover and auto.

Overall, I like the model a lot. Clutch is slightly better but still drags at an idle.

David offered to send me a new clutch which is like the Raptor (two piece, the clutch remains in the frames when engine is removed) but I will try another gallon through this one to see if it improves. David is sending me another auto hub/main belt pulley to solve the runout/wobble on the original one. Great customer service.

So far, my changes to the canopy grommets seem to be working.

My suggestions for assembling a new one:

1) Dial indicate the clutch shaft after attaching to the engine.
2) Enlarge the motor mount bolt holes in the frames & carefully adjust shaft alignment and end play on the clutch bell.
3) Other than for a beginner, install the TT snot green paddles.
4) The instructions are not accurate for drilling servo arms. Collective needs to be further out, cyclic less. Try various distances prior to drilling.
5) If using FG canopy, relocate the grommets if necessary & glue in with Welder (Goop).

One last item ***IMPORTANT***:
After reading another post in which a Gohbee Stinger 30 ARF had the feathering spindle bolts back out & sent the blades flying like spears, I disassembled the feathering spindle on my GB 50.

I had previously checked the bolts for tightness when assembling the model but had not disassembled & used loctite. After about a dozen flights, I read the post on the 30 and removed the bolts. I discovered that one of the feathering spindle bolts was just slightly tighter than finger tight.

I disassembled & discovered that loctite had not been used on these bolts. PRIOR TO FLIGHT, REMOVE FEATHERING SPINDLE BOLTS, CLEAN, AND REASSEMBLE WITH LOCTITE.

06-07-2005 Over year old.

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