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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › Bogging down post lift off.
03-26-2017 11:59 AM  18 months agoPost 1
dbldins

rrVeteran

Nicholasville,Ky.

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I have two rap50 with OS50s. What would cause them to lift, hover a few seconds then slowly fall?

I wish I still flew!!!

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03-26-2017 01:16 PM  18 months agoPost 2
banshee rider

rrApprentice

Phoenix AZ.

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lean midrange

ageing is manditory maturity is optional

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03-26-2017 02:04 PM  18 months agoPost 3
dbldins

rrVeteran

Nicholasville,Ky.

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I basically need to richen low and lean the high to balance??

I wish I still flew!!!

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03-26-2017 04:30 PM  18 months agoPost 4
banshee rider

rrApprentice

Phoenix AZ.

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Richen the low only
fly it see what the results are
only make 1 adjustment at a time

after that you may need to lean the high needle

my rule is always richen an engine if its not running right
you cant hurt an engine by making it richer you will only make it run worse if its already to rich but that wont cause damage to it

ageing is manditory maturity is optional

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03-26-2017 04:34 PM  18 months agoPost 5
Four Stroker

rrElite Veteran

Atlanta

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What makes you think the high end is correct ? Richen both the low and high needles to richen the midrange. Check the tank plumbing and the muffler tap and fuel filters for clogging.

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03-29-2017 12:32 PM  18 months agoPost 6
dbldins

rrVeteran

Nicholasville,Ky.

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Well! If weather holds true, I may be able to report this weekend. Rain

I wish I still flew!!!

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04-03-2017 01:13 PM  17 months agoPost 7
Richardmid1

rrProfessor

Leeds, England

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Also check the muffler isn't coming loose.

60% of the time, it works every time!

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04-03-2017 11:03 PM  17 months agoPost 8
dbldins

rrVeteran

Nicholasville,Ky.

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Thanks for all the info gents! I've returned the low and high slightly and I seem to be fine! Have a little tail wag but that's an issue with TOO many variables.

I wish I still flew!!!

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04-04-2017 01:16 AM  17 months agoPost 9
JuanRodriguez

rrProfessor

The Villages, Florida

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I've returned the low and high slightly and I seem to be fine!
Did you mean that you richened the mix a little ?

Been there, done that and old enough to know better.....

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04-05-2017 11:27 PM  17 months agoPost 10
dbldins

rrVeteran

Nicholasville,Ky.

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Yep. Meant to say richened both.

I wish I still flew!!!

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