Tail servo/linkage/arm question...

[fiveoboy01]

I'm installing a G7703D/8900G gyro/servo combo in my raptor 50.

I've scoured around a bit doing a search and such, and checked on Raptortechnique, and I can't find the answer...

I need to know what size servo arm I should use. I know the number given on the Raptortechnique site is 13mm... The 7703D manual says 11mm for the 600N, I'm wondering if I need to go with 11mm, or 13 or somewhere in between?

My assmption is that I want to use the shortest arm possible(for the best resolution) while maintaining enough throw on the pitch slider... After thinking about that for a second, I know the limit on the 770 is adjustable a'la the GY401, so do I just go 11mm and see if I can get enough throw on the slider? And if it's not enough, then go a mm longer at a time on the horn until I get enough?

Is it un-desirable to have the limit cranked up all the way on a gyro? Or does it not have any negative effects?

Thanks in advance for any help...

[ghtracey]

with my 401/9254 I thought the same thing, shorter arm==more resolution. I used 10.5mm and have full travel at about what looks like 105% on the gyro adjustment screw.

Most setup guides I have seen (including the Raptor manual) say to use whatever the gyro manufacturer says to use. The 401 says to use model maker's desired length which is 105mm (pg 18), and this worked fine for me.