Heli hovers but rotor not horizontal

[Block Sweeps]

Something does not look right on my Blade 230S.
When holding a tail in hover at eye level I have noticed that the main rotor is not horizontal.
The right hand edge of the spinning rotor is definitely lower than the left hand edge.
I noticed it while flying in Stability Mode and thought it may be linked to that mode, but it is the same in Intermediate Mode.
I was flying indoors in a large gym, so wind was not a factor.
It hovers well without drifting but does not look right.
Any ideas anyone?

[tomatwalden]

It's normal. (for all single rotor helis)

https://www.google.com/webhp?sourcei...ing%20tendency

[Grumpy]

+1....Yes, it's 100% normal.

[Block Sweeps]

Thank you both. I obviously have a steep learning curve in this new hobby

[tomatwalden]

Thank you both. I obviously have a steep learning curve in this new hobby

It caught me out when I first started too. If the disc was perfectly horizontal, the heli would be blown left by the tail rotor (which is pushing a free-floating body in mid-air). The lean to the right compensates against this tail thrust.

[Grumpy]

Don't worry, it's a very commonly asked question. I thing pretty much everyone who flies helis is surprised when they first see it. For some reason the lean seems more marked in micro helis than in the big stuff.

[tomatwalden]

Can't recommend this YouTube series enough. As a beginner's intro to rotary flight on YT, I think it's unsurpassed

https://www.youtube.com/playlist?lis...ECC2E56B68A2C3

[Euclid]

Thanks for that URL Tom, a subject I've been planning to get my head around for some time. Can you recommend any book on the (full size) subject?

[Mike Sanders]

Can you recommend any book on the (full size) subject?

It's not a text book, far from it but I can recommend a book called Chickenhawk by Robert Mason. It has some pretty tough warfare descriptions in it but it gives a very good idea about what it was like to learn and fly combat missions during the 1970's.
It had a significant impact on me. As a result the Huey is my favourite (full size) helicopter. The one in my avatar is based in Lancashire.

[Euclid]

Fantastic book Mike that I read some time ago, easily the very best of the genre and I've read many, many of them. The sequal is well worth a read too but doesn't involve any flying. I've had a couple or three hours in the back of Hueys but the one I'd really have loved to experience is the Bell 47 of MASH fame.

[whittm]

It caught me out when I first started too. If the disc was perfectly horizontal, the heli would be blown left by the tail rotor (which is pushing a free-floating body in mid-air). The lean to the right compensates against this tail thrust.

Tomatwalden....you have a disposition of steel! You don't happen to be a college lecturer or teacher of some sort?

[gazmk2]

The same reason why it drifts left when you take off too!

[tomatwalden]

Tomatwalden....you have a disposition of steel! You don't happen to be a college lecturer or teacher of some sort?

No, I work for a UK telco.

But, I have a BSc and a PhD in computer sciences, so I suppose I do tend to use formal language sometimes. Force of habit!