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HomeAircraftHelicopterMain Discussion › os 50 hyper
02-09-2006 07:24 PM  12 years agoPost 1
mackem54

rrApprentice

south shields uk

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quick one chaps,
os in raptor looking at the throttle lever wich way is throttle open fully left or fully right,like a prat put it in and never checked

flying better all the time

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02-09-2006 07:27 PM  12 years agoPost 2
tskg2

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Wellington, New Zealand

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Do what I did...
I wasn't sure either- so I put my starter onto the machine- and spun it up. When you move the throttle arm back and forth- you'll hear the sound change.
It will sound kinda 'open' and 'closed' !

That should tell ya.

Easy peasy!!

G2

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02-09-2006 07:29 PM  12 years agoPost 3
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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OS Hyper = counterclockwise opens, clockwise closes.

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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02-09-2006 08:43 PM  12 years agoPost 4
spaceman spiff

rrKey Veteran

Tucson

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like a prat put it in and never checked
I always check before installing.


Unfortunately i also always forget which way is which once it is installed!

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02-09-2006 10:23 PM  12 years agoPost 5
V-22 Osprey

rrVeteran

Sidney, Maine

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I do exacty what tskg2 said any time its in question.

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02-09-2006 10:59 PM  12 years agoPost 6
Yug

rrMaster

UK. Herts

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I usually look at a spare carb - I can never remember which way it goes

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02-09-2006 11:00 PM  12 years agoPost 7
Tron

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Morgan Hill, CA

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On my raptor 50, I have the throttle arm installed in the stock position. At mid stick, it is pointing downward (eg 6 o'clock position). From here, closed is pulling this throttle arm to the left while fully open is pushing the throttle arm to the right.

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02-10-2006 12:38 AM  12 years agoPost 8
Ingthor

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Reykjavik - Iceland

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just blow in the muffler, if you can, its open, if you cant its closed

(some times you have to turn the crank a little to be able to blow)

This way you can be 100% sure!

ps. you'll lern to love the taste of burned nitro

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02-10-2006 03:02 AM  12 years agoPost 9
medfoch

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Bay Village, Ohio

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There are marks on the Carb and the barell. When the two marks line up you know - the one at the TOP of the carb is OPEN the one on the side is CLOSED. I also try to set up my throttle to 50% at a 90 degrees to the servo - matched with a 0 100 servo travel will give you linear movement on the carb.

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02-10-2006 02:31 PM  12 years agoPost 10
mackem54

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south shields uk

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hi guys,
tried it in heli today took an awful lot of starting lots of smoke but little power it wouldnt lift at all, leaned it a bit but same result,stripped it out and when you look into the exhaust port and turn the crankshaft you can hear air escaping and a see a few bubbles plus it goes past tdc just turning crank,stripped the liner out it is perfect,do you think i need a new piston ring,this engine is used,

flying better all the time

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02-10-2006 02:40 PM  12 years agoPost 11
Yug

rrMaster

UK. Herts

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You will get a bit of leakage because the piston ring is split.
Does the ring look very warn, and does it move past the ports smoothly and without a little click ?
Have you stripped the carb ?
These engines don't like too much fuel; the low needls needs to be a tad lean (about 1 oclock) and the high needle somewhere around 1 1/4 turns.

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02-10-2006 02:57 PM  12 years agoPost 12
mackem54

rrApprentice

south shields uk

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inspected the ring with an eye glass nothing noticeable,smooth and no clicks

flying better all the time

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02-10-2006 03:06 PM  12 years agoPost 13
Yug

rrMaster

UK. Herts

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I assume the bearings are OK, and engine is smooth when turning crank.
What state is the piston in ? much deposits ?
Probably worth checking the carb to make sure the fuel ways are clear.

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02-10-2006 03:17 PM  12 years agoPost 14
mackem54

rrApprentice

south shields uk

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the bearings feel lovely and smooth it turns as smooth as can be ,have just checked the mixture needle seating nothing in it,the piston has nothing on it still shiny

flying better all the time

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02-10-2006 03:23 PM  12 years agoPost 15
Yug

rrMaster

UK. Herts

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Hmmm, dunno. carb next.

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02-10-2006 03:33 PM  12 years agoPost 16
mackem54

rrApprentice

south shields uk

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cheers guy i think its got to be the mixture because everything else seems ok,i am not used to os just fried my tt pro,and i got the os for a song

flying better all the time

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02-10-2006 03:45 PM  12 years agoPost 17
Yug

rrMaster

UK. Herts

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From what you've described sofar, it sounds fine. The 50Hyper is one of the best engines around IMO but it is sensitive to tuning, particularly to being rich, and it does need a few tanks before the power comes on. Has your engine been run prior to you buying it, and why was it being sold ?. One does very very occasionally come across a dud.

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02-10-2006 03:50 PM  12 years agoPost 18
mackem54

rrApprentice

south shields uk

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yes it has been run i got it from the owner of another forum in uk who flies in the same club as me,it needs a new crankcase because it had been in a crash and the muffler snapped a quarter of one of the bolt channels,

flying better all the time

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02-10-2006 03:57 PM  12 years agoPost 19
Yug

rrMaster

UK. Herts

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Sounds like it's been in a severe impact. Crank case may be warped

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