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Compass Helicopters Rage RC Hellicopter Discussion |
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04-15-2012, 12:50 PM | #161 (permalink) |
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Join Date: Apr 2004
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Hi Scott,
Thanks for the input. Were you using the metal case servos in those crashes? I, too, am a good crasher...been known to break unbreakable parts. I just much prefer mounting servos to carbon plate rather than a crash load bearing part. It may seem weird, but I can see buying an entire new kit after a bad crash but if I have to replace 2 expensive servos, I would be very irate. I have yet to hear of anyone bending the case of the DS95s but the thought is always there. Replacing gears is no big deal...replacing the servo would suck. |
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04-15-2012, 12:58 PM | #162 (permalink) |
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Location: Michigan, slightly Northeast of Hell
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My servos in my 450pro have always been the stock plastic case servos. I've been through A LOT of gears.
Scott
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04-16-2012, 09:13 AM | #163 (permalink) | |
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04-16-2012, 11:39 AM | #164 (permalink) |
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I think if you can break plastic cases, it's entirely possible you can bend metal. My thought was it would be nice if they could incorporate some small degree of "protection" for expensive metal cased servos. While I don't particularly care for frame mounted servos, I have never damaged one that was mounted on a side frame.
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04-16-2012, 12:29 PM | #165 (permalink) |
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I think for this prototype they abandoned the angle mounting of the servos because the CF flexed under load. Speculative, but I also believe thicker CF may have caused the arm to swash geometry to be off a bit.
I think there are tradeoffs in every design. One of them in this variant may be mounting so the extremely remote possibility of servo damage exists, I don't know. That said, I've destroyed servos in my T-Rex 500. I'm talking broken, twisted plastic, with the motor dangling, and they're frame mounted. Scott
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04-16-2012, 01:03 PM | #166 (permalink) |
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with alloy bearing block , stiff CF Frame and compact design, IMHO it will be difficult to damage servo case.
I hope we could smack it soon! |
04-16-2012, 09:49 PM | #167 (permalink) |
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Join Date: Oct 2008
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I have wreaked havoc on my DS92s and my dS92 a+ servos and the MKS servos seem to have a built in protection of sorts. I can't put this eloquently, but on hard impact, my servos either find a new center (annoying to have to re program fbl ontroller) or the servo spline breaks. I have only damaged one servo, but that was after several wrecks and was on a 92. I have never broken any teeth, though I did manage to break two output gear shafts, as they seem designed to sheer.
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04-17-2012, 03:52 AM | #168 (permalink) | |
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04-17-2012, 12:28 PM | #169 (permalink) |
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Join Date: Apr 2004
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Curious to understand how the servo can find a new center? Is the pot slipping?
Anyway, nice to hear the 92 and 92A+ have good crash robustness. Cullen, are the 92A+ servos any better than the 92s? I have a set of 92s and while they are nice, there's a fair amount of slop in the gear train. |
04-17-2012, 02:04 PM | #170 (permalink) |
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A+= titanium Gear=> no slop and very robustness.
I used MKS 9660A+ and friend of mine used MKS 9660 . same amount of flight, same bird( protos500) , same flight level, same electronics => my MKS9660A+ are still perfect, MKS of my friend have got slop . |
04-17-2012, 02:45 PM | #172 (permalink) | |
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I can't evenly compare the 92s and 92A+ as I changed FBL controllers at the same time, but the 92A+s fly much better on Bx than the 92s on 3Gx. |
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04-17-2012, 03:26 PM | #173 (permalink) |
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Join Date: Apr 2004
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When you say spline, you mean the servo arm?
About the slop, just want to know physically, if the 92A+ are different from the 92. My 92s have almost as much play in the gears as 5065s. The 95s I have are, essentially, free of slop. |
04-17-2012, 03:37 PM | #174 (permalink) |
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Join Date: Oct 2008
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Yes, servo arm. 95s remain slop free due to tight allowances allowed by the metal upper case. 92A+s have a plastic upper. I can't guarantee they'll run slop free as long as the 95s, but my set has over 100 flights and no noticeable slop, at least none that has caught my attention.
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04-17-2012, 06:49 PM | #175 (permalink) |
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I thought all the DS92/95 used the same gear set.
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04-17-2012, 07:04 PM | #176 (permalink) |
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I guess only the output gears are the same...
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04-17-2012, 07:47 PM | #177 (permalink) |
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Yes, only output gears the same...
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