G4 starter shaft fail....

[jwatts007]

My mate who also has a G4 mentioned to me the other day that he had broken a couple of starter shafts part no PV 1556, well yesterday mine broke as well, so get a few spare ones so as not too lose flying time, I am going to try and use one out of my old 3D as I never had a problem with those, I will report whether it fits......

[monsul]

more or less how many flights did you have on the G4 before the shaft broke? Mine is fairly new (<10 flights) but I wonder if it would be better to stock on a couple of spares just in case....

[jwatts007]

My mate has flown his a lot more than I have mine nothing to do with engine as he has a OS 90 mine is a YS 120, I reckon the old ones may fit all down too the lenth I will let you know how it goes, if I was you for the sake of a fiver I would get one.....

[jwatts007]

Well the old raptors starter shaft part no PV 0360 will fit it is far more robust and weighs a bit more, may have too grind some flats on it though closer to the top of the shaft as the G4 cup is shorter than the old version......

[squeaky pete]

ive put nearly 100litres of rapicon through mine now, still going strong

[jwatts007]

Could have been that we had the 1st ones that came out funny how we have both suffered broken shafts, sheared where the shaft becomes thinner, I have a replacement so will try that...

[Stuart]

I got the older version on the gamble that it would fit as no-one seemed to have the newer ones in stock and some elements of the old raptor will fit the G4 - conversly I believe you can make a G4 tail also fit onto the old Raptor 90.

[jwatts007]

Not heard of any other problems with the G4 I must be the only one who has had a ele servo mount break.....

[Stuart]

Squeaky Petes had a servo mount break - I haven't but I'm keeping an eye on it and have a spare one here too.

[squeaky pete]

yeah, just once been fine since i always giv it a poke to make sure tho!!! lol but never a starter shaft, bet it break this weekend now lol

[jwatts007]

Might be an idea too get the guy on here with his cnc machine to make some beefed up ele mounts, I had a guy make me one its alot tougher than the original...

[brian-in-nz]

i'm on my 4th starter shaft, now have the old raptor 90 shaft in there. combination of hidrolic lock and shaft and clutch not line dup 100%, think it is a weak point in the design !

[monsul]

I keep bending mine (thankfully I had not one break yet). I'm on my third shaft. Any tips on how to make the shaft and the clutch line up perfectly?

[jwatts007]

I keep bending mine (thankfully I had not one break yet). I'm on my third shaft. Any tips on how to make the shaft and the clutch line up perfectly?

Its just a bolt in job and go fly...I have read that if crashed you can twist the bearing mounts so I suppose the clutch stack too...that would mess it up....

[Sburv]

G4 starter shaft fail....

Not once had any problems with the starter shaft or servo mount as of yet..........