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HelicopterMain Discussion › Ok It's engine time!!!
10-23-2004 06:46 PM  13 years agoPost 1
Mitz

rrApprentice

Crystal Lake, IL

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What's the poop on the OS Hyper head 50? I am tired of changing bearings every 50 flights

Dick SCEADU or DON'T

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10-23-2004 06:51 PM  13 years agoPost 2
Rogue123

rrKey Veteran

Phoenix AZ

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Well get ready and buy some stock in OS It seems to be that way for me every 2-3months, Im changing out bearings. Its not the head that cuase the bearings to rust, it's the fuel and atmosphere.

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10-23-2004 07:01 PM  13 years agoPost 3
G-DAVE

rrVeteran

Tyne and Wear ,​England

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Afterun !!!
Dave

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10-23-2004 08:05 PM  13 years agoPost 4
SteveH

rrProfessor

Texas

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Make shure you run ALL the fuel out of the engine at the end of the day. The Boca Bearing's ceramic rear bearing also helps.

The government cannot give you anything without first taking it from someone else.

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10-23-2004 08:21 PM  13 years agoPost 5
dkshema

rrMaster

Cedar Rapids, IA

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So this is the first indication I've seen here that the OS 50 Hyper eats bearings at the same rate as the original OS 50.

Kind of figures, since OS didn't address the problem, just put a new head on and a different carb.

Dave

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10-23-2004 08:36 PM  13 years agoPost 6
mrNoodles

rrProfessor

Borlänge, Sweden

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Isnt it the same bearing as in the 'old' OS05 or!?

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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10-23-2004 09:03 PM  13 years agoPost 7
Rogue123

rrKey Veteran

Phoenix AZ

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OS is making money,why would they change the rear bearing.

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10-24-2004 01:08 AM  13 years agoPost 8
dkshema

rrMaster

Cedar Rapids, IA

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Yes, the engine is identical to the "old" OS in every respect, except the head and the carb. I knew that.
OS is making money,why would they change the rear bearing.
Because, when someone comes out with an equivalent 50 that doesn't have that problem -- they WON'T be making money. And frankly, I would believe a lot of the OS 50's that go bad are doing so under warranty -- and that CAN'T be profitable for OS.

Dave

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10-24-2004 03:40 AM  13 years agoPost 9
Rogue123

rrKey Veteran

Phoenix AZ

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You think

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10-24-2004 03:43 AM  13 years agoPost 10
pilot74

rrApprentice

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It would be interesting to see how many people have one of these engines that actually remain trouble free. coz u only ever hear about the duds.

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10-24-2004 12:46 PM  13 years agoPost 11
Heli88

rrKey Veteran

Clarkston, MI

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I don't know when they usually fail, but mine has over 15 gallons through it without a problem. I don't use after run oil and I don't run it dry after flight.

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10-24-2004 03:05 PM  13 years agoPost 12
Darksider

rrKey Veteran

Derby United Kingdom

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just perform the crank mod to the engine. much like alot of people did with the 50sxh this fixes the problem with the 50 hyper eating bearings too.

crank mod here: http://runryder.com/helicopter/t136872p1/

Gareth

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10-24-2004 04:51 PM  13 years agoPost 13
bluefronted

rrVeteran

Pretoria, South​Africa

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Its strange to see that some r having problems with the OS50 bearings.

I have 2 voyager 50's with OS50's , one has over 200 flights , and is still running strong ,

The other has about 100 flights , and also no problems here.

I am using 15% nitro with 18% klotz oil , my engine always runs warm to cool with the gov set between 1750 and 1800 , I also have the hatori pipes with the helis.

I know for a fact that many in South Africa who have been using "coolpower" have had many engine that have given in way before time. I lost a heli using coolpower , the engine over heated

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10-25-2004 11:31 AM  13 years agoPost 14
G-DAVE

rrVeteran

Tyne and Wear ,​England

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Just run my Hyper about 6 flights so cannot comment on longevity - but - It runs smooth and cool without any tinkering with mixture settings - So if all it's taken is a new head and carb . good on OS it would seem to be sorted .
Had a glimpse of what high nitro fuel can do to bearings - I had put a new OS 37 in my Caliber ,went to the field and second start it spit the fan off - took it home and it was a couple of days later when I got time to look at it .
With the motor not starting the thing was left full of fuel - when I took the back plate off all the steel parts were covered in corrosion - fairly light but had to dismantle the engine and clean it out.
If this can happen so quickly, then over a longer period of time if any fuel is left in the motor real damage will be done to the bearings - is that OS's fault ???
Dave

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HelicopterMain Discussion › Ok It's engine time!!!
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