I have a Wild Hare Ultimate and was planning on useing the Hitec HS-635 Karbonite geared servos for the ailerons and two HS-5645's for the elevator and two of the HS-645's for the rudder. My question is, will the Karbonite gears in the HS-635's be strong enough for my ailerons?

Thanks.

a

No, use metal gear servos only.

The only reason I ask this is because the author of the instructions states the plane has been flown with all Hitec Karbonite gears and NOT to use plastic. I am useing metal on the tail surfaces but didn't know if I could get away with using the Karbonite on the ailerons.
I wasn't to sure about the Karbonite geared servos, I have never used them befor but have heard they are alot stronger than standard plastic/nylon gears. This is my first giant scale aerobatic plane and want to make it last a while, guess I will be useing all metal geared servos.
Thanks.

a

If I recall even Hitec says not to use Karbonite in large gas planes. They are awesome servos, like they NEVER get sloppy - but use them in smaller planes (80 inches or less). I would think they would be fine in bipe ailerons... Personally - I would not use anything but metal gears in any gasser now but I have used the Karbonites in the past...

I had the Karbonite digis in my 3W-24 powered Kangke Cap 120 100's of flights and the servos were as tight as new after all that time.. ... so take it for what its worth...

DP

I actually asked the same question in the Wild Hare forum. Everyone pretty much said to only use metal geared servos. For a little more than say a Hitec 635, you could get Futaba 3050's which are digital and metal geared. Could also just use 645's or 625's. What engine are you putting in yours. I bought one, but I'm going to sell mine to get something else. I just want something different or bigger. I'm really want to get a Dalton 35% Extra 260 when they come out.

I am going to go with the pig of engines....a G-62. I hear there a bit much for the plane, weight wise, but I have flown a few planes with heavy wing loading before because of oversized engines so I hope it won't be to much of a problem. Any of you who have G-62's in your W.H. Ultimates, I would like to hear how they flew

a

I have the Evolution 58 in my Edge and it's still a floater. The Ultimate has more wing area and drag, should still be fun.

What a world... LOL Where I live it's not as open and our runways are 250 - 500 ft depending on direction of landing and approch is hindered by trees where you have to swoop in after you get by them. . Most of the guys flying untill this past year a large plane was 72" Unless it was a giant SIG SR. We have a 150 memebers and over the past 2 yrs guys have got into gas... most were nitro 60 - 70 in wing span... A few large warbirds... top flight kits or old Byron... Because of the price droping on Engines, planes and servos everyone is going SOOOOoooooooo Large. A friend of mine has a 1/4 scale PUP from Balsa USA and took in with him while working this winter to SC and he said his plane was just average for sz if that there... most were larger....

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I was just saying how Servos /.... Planes ..... In the past 2 yrs.... Even the averege guyw with averege budget is building these Large Planes. Few yrs ago you would have to spend thousands more to get one or spend a yr building a kit.

Yeah, I remember when I was thinking "why would I ever spend that much on a servo?" Then things just got bigger and I wanted better as well. So, that last servo's I bought, were all digital. One even has Titanium gears. Engine was $600. Now i'm looking at something that I will need to invest in a $180 power distribution system because I can't run all those servos through the receiver.

I think the trend in the hobby these days is to make things more complicated than they need to be. There is no NEED, notice I said NEED and not WANT, for power distribution systems, or metal geared servos, or digital whizbang thingamajigs or servo programmers for 40% aerobatic planes up to 150cc. Less than 10 years ago it was very common, even for sponsored pilots, to fly nylon geared servos in there 40% Extra's, Cap's Edge's. Before the JR8411 came out...the popular JR servo was the 4721. I think it is still a great servo. If you fly a lot, the metal gears will wear and get sloppy faster than nylon gears. Metal gears cost far more to replace than nylon.

On that note...for your 50cc bird, you need a single servo that puts out more than 100 ounces for the rudder. I am not familiar with the 635 or 645 that you mentioned, but something in the 70 ounce or so range will be more than enough for the elevators. For the ailerons...I don't know if the plane calls for 2 or 4 servos, so I can't comment. I would think that 70 ounces would be enough either way. More importantly you need to pick servos with good speed and that are accurate. Numbers on paper don't tell the whole story.

Flame suit on!

Bryan

I agree. I say "need" because I feel like I need to invest in something like that. I'm not sure about people flying 40% airplanes with nylon geared servos ever though.