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HelicopterHIROBOOther › NHP 680 Razor Pro's on X-Spec
09-07-2003 04:16 AM  14 years agoPost 1
MrDHEJ

rrVeteran

Taylorsville, Kentucky, USA

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Anyone ever try the Razor Pro's on the X-Spec? If so what are your thoughts on them.

I'm still in the hovering stage and after my first crash i looked for the cheapest blades i could find and these were it. Now it's been 5 months since i've flown since the crash and hovering seems like it takes more work then before. My first flights i was using the Hirobo 660 woods and i quickly was able to maintain a steady hover.

Ya think it could be just the new blades? Or maybe my nerves? After the first flight since the rebuild i'm past the jittering stage but i'm wondering what you all think. I've got a set of FRP 680 fiberglass blades on the way, would these be better for stability?

Never go full retard!

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09-07-2003 12:43 PM  14 years agoPost 2
sebastianforbes

rrApprentice

the wallops, hampshire, england

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hi there

did you reset your pitch and throttle curves when you put in the new blades.

razor pros do spin a bit faster so you can either slow them down or lower the pitch at hover otherwise it will be more responsive and appear to you as more jittery.
.

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09-07-2003 01:01 PM  14 years agoPost 3
z11355

rrMaster

New England

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I really like Razors and have a few sets
in shipment for my machines. Yes,
they are probably spinning faster than
the Hirobo 660 so that is contributing
to the jitters but also, it depends on
machine setup and how much dual rate
or expo you might (or might not) have
in the transmitter.

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09-07-2003 04:40 PM  14 years agoPost 4
MrDHEJ

rrVeteran

Taylorsville, Kentucky, USA

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Before the crash I was using the 6x super, now I have the 9z so pitch and throttle curves are new. Pitch is -4 low, 5 mid, 8 high. Throttle is linear.

I don't know how fast the woodies were spinning, but I put a governor on it and the first things I will do is check the max rpm after hovering and see where it's at. I haven’t had the governor on yet but it's set to 1600 in normal mode. 1600 seemed to be the preferred speed for the freya in hover.

I have no expo in the cyclics. I have never liked expo even in my cars. I did try it once on my planks and heli and hated it as much as in my cars.

I have no dual rates either. I set the cyclics ATV to 40 for both ele and ail in normal mode to tame it down.

And off the subject a little, I used Jason Kraus’s 601 setup and used 35 gain on the gyro, but the tail slowly drifts the heli right after about 2 minutes of hovering. In normal mode I had to set the rudder ATV to 40/40 to get the rudder from not maxing the travel at 1/2 stick left or right. Or is that normal? Should I set the rudder back to 100/100 even though the tail blades go full deflection at 1/2 stick?

Thanks all; again you've come to the rescue!

Never go full retard!

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09-08-2003 04:30 AM  14 years agoPost 5
traderdave2

rrVeteran

Covington, GA

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MrDHEJ

I have have a set of NHP razors. Its not those blades, its the setup.

Put the led and brass in the paddles. Run slow headspeed. Check the manual to make sure you have head set in its most stable setup. Try -1 or 0 on low stick. If you are just hovering it will keep you from slamming the helicopter too hard.

Tipically people have the atv at 100 or close to it and then lower the travel with dual rates.

Run atleast 9 degrees of pitch. 8 isn't really enough for a 60.


The atv on the rudder is the yaw rate. The higher the value the faster the helicopter will rotate.

I would suggest using heading lock mode and used the highest gain you can get without the tail osciallting.

Remember that the values that other people recommend are just starting points. Each setup varies so much that one set of values isn't the answer.
Get someone locally to look at your setup or go to a fun fly. I am sure someone will be glad to help.

harlan

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09-09-2003 10:35 PM  14 years agoPost 6
MrDHEJ

rrVeteran

Taylorsville, Kentucky, USA

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Well, the FRP 680 fiberglass blades showed up today. The Razors were more touchy to handle, these FRP's made it extremlly easy. The FRP's seem a little heavier then the Razor's, and the blade thickness is about 3 more MM. They also produse more lift, as my left hand quickly found out after spooling up the rotor. They are very flexable compared to the Razors.

In the Blade section one guy reported a boom strike with the FRP 600's, and as flexable as the 680's are i can belive it. These will be perfect for learning on that's for sure. Cheap "$55", and seems well balanced out of the package as there were no vibes.

Razor's are going back in the box unless someone at the field wants to wring my bird out and show me all the kool stuff i can't do yet.

Thanks all!

Never go full retard!

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HelicopterHIROBOOther › NHP 680 Razor Pro's on X-Spec
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