Bergen Gasser EB

[cbergen]

Check your fuel lines, that you didn't reverse them somehow during your repairs.

[mister2u]

Hi Chris. The fuel lines are in their proper places. Actually, I didn't even need to remove the lines while doing the repairs. I'm going to pull off the carb and check the gasket(s). Hopefully there's a loose nut or something that can easily be repaired.

[mister2u]

Ok, i've found it. I didn't see it today, but I felt it right before I was about to perform surgery. I appears that the engine may have moved somewhat when she hit. Anyway, I discovered that the outer teeth on the main gear are stripped. That's cool with me. I'll order another main gear and readjust the engine and I'll soon be at it again. (hovering that is)

[Calman]

Hey mister2u
Great posts while building and I have gained heaps of info from it, I bought my bergen EB already built and going so have yet to get into repairs etc although my main gear stripped a teeth or 2 and about to replace it.
One thing I had a problem with when I set the Gasser up on my 9C was there is a default setting of tail rudder mixing activated which made my tail swing to the left as well, make sure all your mixings are inhibited in the radio.
Thanks Steve

[mister2u]

Hey there Steve

Thanks for the input and I'm glad my previous posts have been beneficial for you. I'm new to this, as you already know, and I wanted to get as much info as I could regarding this hobby. I recall having all of my mixes off on my radio. They are all in the "INH" state. I'm a bit embarrassed to say what I discovered on the heli; the reason that tail kept wanting to spin to the left. I had to change the setting on my gyro from 'NOR' to 'REV'. The wheel on my rudder servo is on the right side of the boom and not the left. Also, I had forgotten to switch my HH back on when attempting to trim the tail out. Just to make sure it was my gyro, after placing HH into the ‘on’ position, I switched the gyro back to ‘NOR’ and the tail wanted to whip around to the left. I placed in back in the ‘REV’ position and it held strong. Therefore, I would have to say that my gyro setting was wrong. I guess that's a dumb Newb move for ya, huh?


Byron

[mister2u]

Me again. Again I'm waiting on parts to come in. I don't think I aligned everything up after putting on the new gear. The outer teeth seem to have melted. The clutch assembly was unusually hot this time. Anyway, I've got to get me another heli to hold me over when the other is down. Would anyone happen to have any suggestions? To top it off, it's a beautiful day today!! Go figure.

[Calman]

Byron
I like my raptor 50s as second helis, they are pretty reliable, good to throw around and cheap and easy to fix if anything goes wrong.
Cheers Steve

[cbergen]

The melting of the main gear and associated HOT clutch bell are indications that the clutch is slipping.

Now we have to figure out why the clutch is slipping....

Do you know what your headspeed was?

In the previous incident, did the engine go to full throttle, or at any time have you had a hot start?

[mister2u]

Not sure what the headspeed is yet. I haven't been able to tach it. In the previous incident, I was able to flip the throttle hold before she hit. I never have had a hot start. I did notice that when I put the new gear on, it didn't spin as freely as it previously had. It was a bit notchy. I'm thinking that I didn't align clutch, main gear, and rotor pinion correctly. I also noticed, after I got home, that there was a bit of verticle play in the main gear; as if one of the slip collars became loose. I suspect that when the new gears come in, I'm going to have to find some larger diameter washers for the start shaft bearing block assembly screws. The washers seemed to have dug into the sides of the upper frames on both sides. Maybe they vibrated loose and caused some slippage, causing the engine/clutch to tilt backwards or forwards.