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JR-Spektrum . Gyro Hobbies . E-flite

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Engines Plugs Mufflers Fuel > OS 61SXWC run on CP 15%
 
 
Doug
Elite Veteran
Location: Naples Florida....

Below are some pictures of my OS engine during a tear down to replace the bearings, I was surprised to see that the stock rear bearing has a composite retainer. The corrosion on the rear bearing and crank was a little more that I expected but the bearings still run smooth. The ring end gap was still the same as new and there were no deposits except the blue dye. This engine has a little over 60 gal through it and is flown at least one day a week and usually two for a little over a year. The replacement bearings are from "Boca" and are the "high speed" I was interested in getting "plastic" retainers to eliminate the possibility of retainer fatigue.Below are some pictures of my OS engine during a tear down to replace the bearings, I was supprised to see that the stock rear bearing has a composit retainrer. The corrosion on the rear bearing and crank was a little more that I expected but the bearing still run smooth. The Ring end gap was still the same as new and there were no deposits except the Green dye.








02-18-2002 Over year old.
 
 
vetrider
Elite Veteran
Location: Daleville, AL (Ft.Rucker)

I always add 2oz of synthetic (CP14 I think)oil to each gallon of my CP15%.
Haven't done a teardown yet though. Still too new.

Nolan Manley
RREMODELS, KBDD, Magnum Fuel
Stratus, ODIN, K3D, ATOM500, Outrage550, 700N, Vibe.
02-18-2002 Over year old.
 
 
Dino Spadaccini
Key Veteran
Location: USA

fuel

use wildcat much better and they tell you the oil content on the can simply the best www.wildcatfuel.com
02-21-2002 Over year old.
HOMEPAGE  
 
 
EChapkis
Veteran
Location: Tampa, FL

Oil Content

So 16-17% oil in Cool Power is not enough oil so you add oil. That may or may not be a good idea.

First, oil percentages are bogus. Why? It all depends on the oil used. 16% oil maybe a lot or just a little depending on the oil. So.... What does 16,17, 23% oil really mean? IT MEANS NOTHING if you don't know the specifications of the oil used, so you need to have a trust with the fuel manufacturer.

Adding oil... Why it is not a good idea..... Again, do you know the oil being used? If you do or you can buy the oil from the fuel manufacturer then you can assure yourself of oil compatability. I know Morgan (Cool Power) sells oil seperately and Wildcat will tell you what oil is being used.

A perfect example in gas engines (not glow), petroleum oil (Lawn Boy) is usally 32:1 as low as 50:1. Amsoil is 100:1. They are very different oils.

As far as heli's go, we use a Synthetic oil and we typically do not know the oil spec.

If xxx fuel company came out with a new fuel for heli's that said the fuel only had 3% oil, would you use it? Even if it lubricated better than the 17% stuff? Last comment on oils...

Oil also helps remove heat. Most of us know this. With this fact, the more oil the better heat removal. Even the 3% oil scenario may not work as the % of oil in the fuel may not remove enough heat.

When I switched to Amsoil 100:1 from Honda HP2 which is 50:1, I did get a hotter run, not much, but the cylinder temps did increase. This was in a 105cc twin gas engine.

Bottom line.... the oil percentage may or may not be an issue or adding oil is not always a good thing either. If you are not sure, just call the fuel company. They will be able to tell you if the Klotz your adding is compatabile with their oil and how much to add.

Evan Chapkis
Sponsored by PowerMaster Fuels

Evan Chapkis Tampa, Florida
02-21-2002 Over year old.
 
 
dchinww
Senior Heliman
Location: Seattle, Washington

TBO?

Doug,

What prompted you to do a tear down on your engine? Was this a preventative thing or was it not running as well?
02-23-2002 Over year old.
 
 
Doug
Elite Veteran
Location: Naples Florida....

It was running great, I was concerned about the corrosion and also thought it would have a "stamped steel" retainer and was worried about fatigue.
02-23-2002 Over year old.
 
 
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Engines Plugs Mufflers Fuel > OS 61SXWC run on CP 15%
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