Should demand OS engines replace my engine?

srhadden · 08-23-2009, 06:18 PM

I had a OS 50 hyper for 2 months, I flew the heli every two days since I got it, I never let it sit. When I knew I wasn't going to fly for about 4 days I put some after run oil in.

My engine failed and tore itself, they said the rear bearing was rusted. I looked at the rear bearing. I didn't see rust, but I saw some brown tarnishing on it. Could this have been from the castor oil in my powermaster fuel?

I don't see how the bearing could rust in 2 months with daily use.

I purchased a new OS 50 hyper in the meantime, and this engine performs so much better and runs so much cooler than my previous engine. The last engine was a tuning nightmare, so I think something was wrong with it from the beginning and they should send me a new or refurb engine for free.

What do you guys think? They offered $75 to repair it, but I don't see why I should pay anything.

Jafa · 08-24-2009, 06:14 AM

The $75 repair is a good price

Bearings will rust if moisture gets to them

Given that you never had the engine running well I'm not sure it's fair to ask OS to cop it

The brown color on the bearings is likely to be the fuel dye

srhadden · 08-24-2009, 12:56 PM

Ok, thanks for your comments.

So bearings can rust in two days? I literally flew the heli every two days since I got the engine. Our field is open, tues, thursdays, and on the weekends.

It never ran right, I never got the power power out of the engine, and I had to have my mixture screw very lean to get it to start. I know this now because my new OS 50 hyper runs like a champ and it runs 20-30 degrees cooler than the last one too. Same setup.

Jafa · 08-24-2009, 05:04 PM

They won't rust in two days but the cumulative idle time over two months can do it
Running lean and hot gives the bearing a hard time also

srhadden · 08-24-2009, 05:08 PM

I spoke with an OS tech today and he said they will rust overnight!

Farrell · 08-24-2009, 05:19 PM

Just because you run your engine every couple days does not mean the bearings will not rust. The rust is not just from letting an engine sit. The fuel we use is hard an the engine, it pulls moisture from the air and exhaust gases are corrosive.

Replacing your bearings is easy, there are even videos on YouTube. It's just part of the hobby, especially if you run high nitro fuel like 30%.

-Farrell

CoronaL · 08-25-2009, 07:48 PM

typical OS bs on warranty

the rust is probably on the back of the bearing and will happen and NOT effect the race of the bearing.

Something probably just failed and they are using this to deny the warranty.

I prefer YS over OS. When I use OS I pretty much consider the warranty non effective ie NOT there.

08-23-2009, 06:18 PM	#1
srhadden Join Date: Jun 2008	Should demand OS engines replace my engine? I had a OS 50 hyper for 2 months, I flew the heli every two days since I got it, I never let it sit. When I knew I wasn't going to fly for about 4 days I put some after run oil in. My engine failed and tore itself, they said the rear bearing was rusted. I looked at the rear bearing. I didn't see rust, but I saw some brown tarnishing on it. Could this have been from the castor oil in my powermaster fuel? I don't see how the bearing could rust in 2 months with daily use. I purchased a new OS 50 hyper in the meantime, and this engine performs so much better and runs so much cooler than my previous engine. The last engine was a tuning nightmare, so I think something was wrong with it from the beginning and they should send me a new or refurb engine for free. What do you guys think? They offered $75 to repair it, but I don't see why I should pay anything. __________________ T-REX 600 SNP: Stock Blades, OS 55HZ Hyper, OS Pipe, 9254 Cyclic , BLS251 w/ Spartan 760, Align 2-1, MultiGov w/Spektrum RPM backplate sensor [/COLOR]

08-24-2009, 06:14 AM	#2
Jafa Join Date: Apr 2005 Location: Sydney Australia	The $75 repair is a good price Bearings will rust if moisture gets to them Given that you never had the engine running well I'm not sure it's fair to ask OS to cop it The brown color on the bearings is likely to be the fuel dye __________________ Lepton \| Logo 400/500/600 \| Sceadu Evo \| Freya Evo \| Trex600N \| Avant FX Try my To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. program

08-24-2009, 12:56 PM	#3
srhadden Join Date: Jun 2008	Ok, thanks for your comments. So bearings can rust in two days? I literally flew the heli every two days since I got the engine. Our field is open, tues, thursdays, and on the weekends. It never ran right, I never got the power power out of the engine, and I had to have my mixture screw very lean to get it to start. I know this now because my new OS 50 hyper runs like a champ and it runs 20-30 degrees cooler than the last one too. Same setup. __________________ T-REX 600 SNP: Stock Blades, OS 55HZ Hyper, OS Pipe, 9254 Cyclic , BLS251 w/ Spartan 760, Align 2-1, MultiGov w/Spektrum RPM backplate sensor [/COLOR]

08-24-2009, 05:04 PM	#4
Jafa Join Date: Apr 2005 Location: Sydney Australia	They won't rust in two days but the cumulative idle time over two months can do it Running lean and hot gives the bearing a hard time also __________________ Lepton \| Logo 400/500/600 \| Sceadu Evo \| Freya Evo \| Trex600N \| Avant FX Try my To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. program

08-24-2009, 05:08 PM	#5
srhadden Join Date: Jun 2008	I spoke with an OS tech today and he said they will rust overnight! __________________ T-REX 600 SNP: Stock Blades, OS 55HZ Hyper, OS Pipe, 9254 Cyclic , BLS251 w/ Spartan 760, Align 2-1, MultiGov w/Spektrum RPM backplate sensor [/COLOR]

08-24-2009, 05:19 PM	#6
Farrell My HF Map location Join Date: Aug 2006 Location: Huntington Beach CA, USA	Just because you run your engine every couple days does not mean the bearings will not rust. The rust is not just from letting an engine sit. The fuel we use is hard an the engine, it pulls moisture from the air and exhaust gases are corrosive. Replacing your bearings is easy, there are even videos on YouTube. It's just part of the hobby, especially if you run high nitro fuel like 30%. -Farrell

08-25-2009, 07:48 PM	#7
CoronaL Join Date: Jan 2008 Location: Winnebago IL Where the politicians are MORE corrupt-Thanks alot Blago/Burris/Daley etc...	typical OS bs on warranty the rust is probably on the back of the bearing and will happen and NOT effect the race of the bearing. Something probably just failed and they are using this to deny the warranty. I prefer YS over OS. When I use OS I pretty much consider the warranty non effective ie NOT there. __________________ Velocity 50N x2, TREX 700N Outrage 550, 500ESP flybarless Team To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Team To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. , JR/Spektrum radios "I'll tell you what it is...."

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