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E-Sky › Why doe's She Hop,?
02-07-2008 12:50 AM  10 years agoPost 1
Sween

rrNovice

Hart ,Michigan,United States of America

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why does my HBk2 hop while in hover seems to smooth out then return,,, kinda like the tail hops up and down,, i just put in a feathern shaft, tracking is dead on , just tail likes to hop a little sometimes, my feathern shaft is nice i think ,i mean for loose ness , i know someone here has had it happened, but can't find the thread, oh i did put in a flybar thing too,

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02-07-2008 12:54 AM  10 years agoPost 2
tryan02

rrProfessor

Canton, Missouri

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You may be barking up the wrong tree. It could be a lack of power to the servos mine was hopping bad at the end till my BEC died.

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02-07-2008 01:04 AM  10 years agoPost 3
tmaxx26power

rrApprentice

South Dakota

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What headspeed you running. It may be too low.

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02-07-2008 01:13 AM  10 years agoPost 4
slider46

rrProfessor

Ocala Florida

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Headspeed is too low will usually cause this problem. If you have an extra twist in the belt it will hop. A tooth missing in a servo. Just a few things to look at...

Tom..... No "D" flying....

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02-07-2008 01:13 AM  10 years agoPost 5
tryan02

rrProfessor

Canton, Missouri

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Most us poor people can only guess headspeed from some dumb calculator. But TMAXX is correct low headspeed will make it bobble especially with a little breeze. So If you dont know your headspeed whats your motor and pinion size or are you still stock?

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02-07-2008 01:19 AM  10 years agoPost 6
MMike

rrElite Veteran

Holland,Mi-USA

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New feathering shaft? Did you have a recent crash?
Has it always hopped?
(Dr. Evil accent please), WE NEED THE INFO PEOPLE!

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02-07-2008 01:54 AM  10 years agoPost 7
Sween

rrNovice

Hart ,Michigan,United States of America

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it did smack the the ping pong table, just hard enough, to bend the shaft , pretty sure main is straight, i replaced the servo's , well 2 of them ,, 3800 esky,9 tooth,,, 240 gy , all was sweet, before,still all stock parts, hop's inside house , no breeze sept for they ol'lady's lips hehe,i have a rpm, thing from glo bee, will that work,right?

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02-07-2008 05:07 AM  10 years agoPost 8
shizack

rrKey Veteran

Aiken, SC USA

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Check all the head pieces from the swash up for slop or loose screws. I had a bit of a bobbing issue that was apparently due to a washout arm getting wobbly. I couldn't get it tightened enough to lose the wobble, so I used that as an excuse to get the purple washout. No slop, bobbing has 85% gone away (the remainder is probably due to thermals and wind) and tracking has improved.

Carefully check the seesaw arm and Bell control arms for hidden breaks.

A soul in tension is learning to fly

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02-07-2008 12:23 PM  10 years agoPost 9
Sween

rrNovice

Hart ,Michigan,United States of America

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Thanks, i did replace the bell controll arm it was busted, it broke in the crash, i' ll check it out tonight after work thanks alot everyone here,, Go Runryder Go!!

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02-07-2008 03:26 PM  10 years agoPost 10
MMike

rrElite Veteran

Holland,Mi-USA

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With replaced servos, your pitch might be affected.

I'd be checking it.

It could be taking off before proper head speed is reached, giving your heli "the hops".

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02-07-2008 06:34 PM  10 years agoPost 11
Sween

rrNovice

Hart ,Michigan,United States of America

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i do have a tach, thought i did,what is the head speed suppose to be?, i have about +11 at full throttle ,im about ready to take this trailer Queen out in the snow,do some laps with it.

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02-07-2008 06:53 PM  10 years agoPost 12
tryan02

rrProfessor

Canton, Missouri

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+11 thats pitch from a pitch guage. A tach would read mainrotor headspeed in RPM I would just guess for a slow king around 1800-2000rpm. But the pitch range should be -2 to +9 or +10 normal mode.

If your feeding too much positive pitch with too little headspeed it will hop. Your engine on 9T is a great match so I would look elsewhere.

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02-08-2008 12:46 AM  10 years agoPost 13
Sween

rrNovice

Hart ,Michigan,United States of America

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cOOL i'll ajust the pitch and check it out

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02-08-2008 01:11 AM  10 years agoPost 14
Sween

rrNovice

Hart ,Michigan,United States of America

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yepp ,you was right!! i hope so anyways hop is gone, this is what i did, took pitch out, i have a glo bee,intellitach. i brought it up stair's and hovered, at about 4 foot it is 4000 rpms, smooth trackin sweet, no bad things ,sept i think the 3110'on tail is to weak,im happy agin, im goin out tommrow, and do some hot laps , i like the 240 , tail is solid compared to my cppr, i like "a" loose tail.hehe but least in the house it seems nice,,this thing has been nothin but a trailer Queen since i got it,Maiden Voyage, will be after work, we have like 10 inche's of puffy snow, next thiing im doin is build me a "Douginstein", i can't wait!!! What you think about a Telebee, for weight?and stuff, Yea thanx'x Agin everyone,Go Runryder , Go

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02-08-2008 01:16 AM  10 years agoPost 15
tryan02

rrProfessor

Canton, Missouri

My Posts: All  Forum  Topic

you got a false reading on your rpms trust me the plastic head may of exploded at 4000rpm. I got aprx 2600 at 100% with a 300HDX3800rpm 10t.
a 15t turns around 3000rpm.

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02-08-2008 02:11 AM  10 years agoPost 16
Sween

rrNovice

Hart ,Michigan,United States of America

My Posts: All  Forum  Topic

oh well, im most be wrong, i'll figure it out , it's nice, smooth ,head speed seems real good,i will figure out how to post video, so you can check it out, if its still light out tommrow im taking it out, but so far three battery, maybe i have the tach set wrong,

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02-08-2008 02:17 AM  10 years agoPost 17
Sween

rrNovice

Hart ,Michigan,United States of America

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Hey Tryan, Iforgot about Flybar DAH!!!! that' what gave me the 4000!! D A H hehe so cool ,,, Dont yea love it!!

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02-08-2008 03:09 AM  10 years agoPost 18
tryan02

rrProfessor

Canton, Missouri

My Posts: All  Forum  Topic

I dont have a tach if you like the way it flies and doesn't come apart it must be the right speed. Im guessin with the right pitch your around 1800rpm in a hover.

Glad to hear your happy with the little guy enjoy it cant wait to see some vids been pretty slow around here other thann dougies frankenking.

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