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HelicopterMain Discussion › Blade speed at end of auto – Tempest vs CS
05-31-2004 01:26 PM  13 years agoPost 1
nocontrol

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Cape Town, South Africa

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When I do an auto with my Tempest I have a lot more blade speed at the end of the auto compared to my CS. Any reason you can think of?

The 2 are within grams the same weight, both have the same pitch curves, both use the same blades (main and tail), both use the same servos and gyro. I did it in the same weather conditions. Can not feel binding or stiffness on CS when turning head….. ?????

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05-31-2004 01:50 PM  13 years agoPost 2
Secret Squirrel

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New Zealander living in Melbourne, Australia

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Hi there,
My Tempest FAI is quite a bit heavier than my CS and both auto very well especially when they have the same blades on. Truthfully, I have not noticed the Tempest to auto any better or worse than the CS.

Si

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05-31-2004 02:14 PM  13 years agoPost 3
Davo

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London, UK

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More resistance in the CS tail drive mechanism? Binding in the one way bearing? Does the Tempest have a larger diameter rotor head?

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05-31-2004 02:35 PM  13 years agoPost 4
mcatech

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Mount Gambier SA Australia

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Hi
I am no expert on this but I know the Centre of Gravity can play a big part when autoing how do they compare
also could be as simple as efficiency in the transmission
Cheers Michael

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05-31-2004 09:28 PM  13 years agoPost 5
Paul Woodcock

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Dubai - United Arab Emirates

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Hi Nocontrol

How is CT.

The Tempest head is 18mm longer than the plastic MA heads (each side) and I am sure it is bigger than your CS.

Is the Tempest not lighter...?

I find a small change in the lower pitch setting makes a big difference on the rate of descent and the final rotar speed. A few % change is not really measurable on a pitch gauge, but make a big difference. Try 2 and then 4 % change just for fun.

Paul

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06-01-2004 12:17 PM  13 years agoPost 6
nocontrol

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Cape Town, South Africa

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Thanks for replies.

CT is the best place to live but the wind is a bit of a bother when flying RC. One of my friends moved up to JHB and he says you guys have no air up there - we fly in butter compared to you. NO the Tempest is heavier standard and kitted out the same

I will check everything (including the items mentioned on top) again.

It must be my CS and not CS as a rule - I can not think that the one make is better than the other.

The blades are the same but the head might be wider - mmmmm - must check tonight.

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06-01-2004 12:52 PM  13 years agoPost 7
Chuckie

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Crofton Maryland

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I have 15 flights on my second new Tempest 3d and all the parts are identical to the first. I use the same model memory for both machines and have mechanically trimmed the second heli. The first has 260 flights on it. The second does not have the same blade speed at the end of the auto but I think it’s due to the main gear not broken in and the gear mesh differences. Also, the tail gearbox mesh was made a little tight to break in the gears so all these things will be contributing to the difference. I expect, as the newer machine wears in the auto performance will improve.

So I would say different brands would definitely fly and auto differently based on head and driveline design, heli weight, canopy size and shape, and program settings.

Thin air??? Well that's a new one. Try autoing downwind on a windy day. Now that's what I would call thin air.

Charles

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06-03-2004 07:18 AM  13 years agoPost 8
nocontrol

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Cape Town, South Africa

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"Thin air??? Well that's a new one. Try autoing downwind on a windy day. Now that's what I would call thin air." - The wind changed in direction during my one flight and I did not think and did just that, well the heli ended up in a lot of peaces - #$%&^*#

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06-03-2004 02:24 PM  13 years agoPost 9
invrtd

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Victorville CA

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Get an old cassette tape and pull some of the ribbbon off the tape and tie it to your antenna. I recently got back into gliders and still keep the ribbon on my antenna when I fly heli's. The ribbon is very light and shows any wind shift. It's a simple solution that will keep you from doing a downwinder again.

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HelicopterMain Discussion › Blade speed at end of auto – Tempest vs CS
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