Faster roll rate on Raptor 50 V2

[Aviation addict]

Guys,

I want to get my Raptor 50 rolling quicker i.e more like my 90. I am using the maximum cyclic pitch / JR 9411 servos at a Regulated 5.3Volts and some MA 19gram paddles. I also have some flybar stiffners fitted.

At present I'm running a headspeed of 1900. I have considered some V Paddles but they are just said to be between 15 and 19 grams I think - so if I get some 19 gram ones (like the ones I've got) I'd imagine the heli will roll and flip at about the same rate.

Would the 80mm V Paddles be the right ones to purchase and how much do they weigh?

The only way forward I can see it to try increasing the headspeed further and consider V Paddles.

Cheers.

[bgjames111]

I don't remember what they weigh, but they are nice. I like them better than the tt paddles, they feel smoother. Also a higher headspeed of 2000+ will make the helicopter roll faster.

[Aviation addict]

Will 2000+ be hammering the engine at all - using the standard gear ratio? I've heard of people using 2100rpm but they may have shares in OS! Thanks the the V Paddle endorsment. May go that way.

[bgjames111]

actually you wont hur the engine one bit. In fact if you are using the stock gear ratio, you won't ever see the peak power of the engine at 2000 rpm. I use the 8.73:1 ratio and have my gov set at 2050 and it's a rocket.

[BarracudaHockey]

2000 rpm puts an OS right at its peak power of 17000 so you will be fine.

Have you tried the Shrek paddles?

[Aviation addict]

Thanks guys - will try bumping up the headspeed to 2000rpm then. Have never heard of Shrek paddles. Will have a search for them in a minute. Are they any good?

[BarracudaHockey]

They are the bright green Thunder Tiger paddles. :D Get it? Shrek.....

Now back to your regularly scheduled programming.

[Rickenbacker]

I upped my headspeed to 2100 and put on the snot green paddles. Ended up putting the old heavy paddles back on, it was just too fast. Up the headspeed first, I think you'll be pleasantly surprised.

[avatar71]

Red Dampers?

[BarracudaHockey]

Actually I prefer the infinivations, they are soft around center so it doesn't nod at lower head speeds, harder than the reds at extremes and you dont have to slather them with grease so its alot cleaner to take apart.

[kwikee]

Just remember lighter paddles doesn't mean faster roll rate, it just means faster initialisation of roll. As an example- if two identical helis, but one with black paddles, the other with green, were to fly 3 consecutive axial rolls, they would both complete the rolls within fractions of a second of each other. The only difference is that the green paddles allow the flybar to reach its maximum throw in less time, but don't actually give more throw. For faster cyclic response, you get lighter paddles (but the downside is they will move the heli more in wind). For more cyclic response, several things can have an effect. Lighter blades, and/or blades with an inward CofG, more than 1:1 mixing ratio, more travel for the seesaw/flybar, higher headspeed, and so on. Headspeed and blades are the easiest to change. The others require new hardware and partial dismantling.

Cheers, guys

James

[WillJames]

The other thing is that if you lead with a little collective when you initiate the roll, it will roll a lot faster. I have been told this is part of "collective management".

It definitely works,

HTH,

[ColinB]

John,

I'd suggest removing the flybar stiffeners - they add weight (hence, slow the cyclic) and are not needed. Getting rid of them should increase your cyclic rate a bit.

Colin

[bgjames111]

flybar stiffeners? what are they? never heard of something called that. :dontknow

[ClayK]

I'm running 2100 headspeed with Infinivation dampners and green paddles. Model rolls plenty fast for me..... I'm running a Kasama head at 13/-13 with 7 degrees cyclic and 9252's on the collective/cyclic. I've actually been considering toning it down to about 2000 on the head, 2100 is screaming fast.... I'm also running no expo, the model seems pretty nimble. I've been debating on putting a little expo into it though...

Other than that, everything else is stock.

[jongurley]

To the comment about the O.S. peak power being at 17000, actually the peak power is 1.9 horses at 18000,,,,, , just a correction,, so there for, doing the math the with the headspead at 2100rpms, and the stock gear 8.5 ration you are looking at 17850rpms,,, with the 8.73 gear you will be at 18333rpms on the engine, all over the peak power,, and the "red line" or end of the pratical rpm range on a O.S. 50 hyper is 20000 so you are well below at 18333rpms,, just some thoughts,, any comments,,,

[BarracudaHockey]

Practical rpm range: 2,000-20,000
Output:1.9 hp @ 17,000 rpm


Not saying you are wrong but thats from OS website, so where do you come by that information?

[chrytek12]

My headspeed is only 2280. I think I might need just a little more. Oh and by the way....it rolls stupid fast! :twisted:

[jongurley]

I stand corrected about the headspeed :dontknow ,, and flying with Chrytek12 yesterday I can attest to the roll rate,,, I think however I am going to try the 8.73 gear and pinion,, I am going to give it a try,, I think my math is right at 2100 headspeed the rpms will be 18333 on the hyper,, :arggg: