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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › new engine tear down.....
04-02-2010 10:34 PM  10 years ago
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brcg123

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Wagoner OK USA

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new engine tear down.....
I keep reading people saying that you must tear your new engine down completely to remove FOD and debris before you fire it up for the first time, or your an idiot, or in the very least, responsible for what happens to it. where in your manual does it say this? I cant seem to find it anywhere.
Why dont you have to tear your weed eater down completely before you start it for the first time? aint that about the same engine being used for your chainsaw, weed eater, leaf blower? maybe different engine, but same principle? None of these say anything about taking the engine apart in the manual, and I dont see anyone saying to take them apart, or anything about voiding the warranty if you dont pull it apart.
It seems like OS is asking a lot of pilots to have them take the engine apart before they start it up for the first time, if this is the case. And if its not the case, then why is everyone saying to take it apart, or your responsible for what happens if there is FOD in it? And, couldnt OS then say that you voided the warranty in the first place by disassembling the engine for no reason?







Trex700N, Trex600N, Raptor70, RaptorTitan, GMPCrickett, Visa
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04-02-2010 10:58 PM  10 years ago
Gearhead

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""It seems like OS is asking a lot of pilots to have them take the engine apart before they start""

they are not asking people to do it, they are forcing people to do it,,

to add, back in the early 90s when I ran RC boats boat guys were tearing down their new Boat Engines, but I didn't know this, and after only 2 runs I had a brand-new OPS 46 bust up on me because I didn't tear it down and check it out, the Setscrew that secured the Pin for the Zimmermen Disk was loose and the Pin pulled-out and damaged the Rod,, when I ordered a new Rod the guy told me on the phone I need to tear down all new Engines and check them out..
Jim
Buzz Buzz Buzz
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04-02-2010 11:02 PM  10 years ago
TMoore

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Cookeville, TN

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Bruce, I'm one of the ones that advises folks to tear down their engines before they run them. When you buy a weedeater do you have to build it? When you buy a ZTR to mow your yard, do you have to build it? You don't and if something happens to the engine the company that made it takes the responsibility to fix it or make it right because THEY built it. I choose not to depend on OS, YS or TT to assemble and fit my engines, so I do it prior to the first run.

Simple fact is that once you get the engine you can either run it out of the box and depend on someone else to make sure it is right or you can tear it down, clean it and put it back together and run it. It's your choice. No one is making you do it but IMHO it is a good decision to make because out of the last 100 engines that I've bought I have yet to have one fail.

The choice is yours, you can argue with the engine manufacturer about what they should do, how they should do it and when they should do it but for me, my time is more valuable than that so I tear it down, check it out, if it looks good I reassemble and go fly.

The choice is yours.

TM
Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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04-02-2010 11:10 PM  10 years ago
Gearhead

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""because out of the last 100 engines that I've bought""

TMoore, just wondering here, can you tell us if (and what) you found in some of your 100 Engines ??
Jim
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04-02-2010 11:20 PM  10 years ago
brcg123

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Wagoner OK USA

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you make a valid point there! It just seems like the manufacturer's are forcing us to tear them down, yet the price seems to show more consideration should be given to us, the customer. No i didnt build my mower or weed eater, but you do have to do a little assembly, It would be like buying a RTF 30 raptor, and having to take it apart and rebuild before you fly it. The whole reason to buy a RTF would be because your a newbie and dont know how to build one, in which case your in double trouble, having just paid for a RTF and now having to tear down and rebuild. Take the new OS55, 300.00 and you have to take it apart before you start it or it WILL blow up(lesson learned) why not charge 200.00 and send it to you in six bags? Forget about warranty, you built it. why not make the engine part of the kit, for real, send it to you in pieces? wouldnt that be easier?






Trex700N, Trex600N, Raptor70, RaptorTitan, GMPCrickett, Visa
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04-03-2010 12:04 AM  10 years ago
TMoore

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Cookeville, TN

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TMoore, just wondering here, can you tell us if (and what) you found in some of your 100 Engines ??

Jim
I routinely find the head bolts improperly torqued, there is typically swarf in the engine from the build and machining process. I have found the shims to have been improperly installed and there will sometimes be a sliver of brass on top of the piston. Once in a while the ring will be improperly installed the and the engine will be bound up.

On YS engines I always polish the sleeves so that they don't require heating the case to remove them. Bearing replacement is inevitable so this gets done right off the bat. OS carbs get blown out with denatured alcohol and then reoiled. TT carbs on the 53's get thrown in the trash and replaced with an OS carb. YS carbs get checked for proper assembly.

Once I get the crankcases stripped I will lap the exhaust face to make sure it is flat so there will be no need for a gasket once I am ready to run it. If I have lots of time and want to I'll throw the case and all the internals in the ultrasonic cleaner and Dawn dishwashing detergent. The bearings get cleaned in prep-sol and oiled with some synthetic oil.

TM
Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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04-03-2010 12:32 AM  10 years ago
LonR

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Macomb,Mi

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It would be cool if they could (option) ship motors in parts so we could build them ,maybe knock some $$ off too..600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan
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04-03-2010 12:42 AM  10 years ago
Yug

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UK. Herts

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It would be cool if they could (option) ship motors in parts so we could build them ,maybe knock some $$ off too..
agreed. Same also applies to all 'factory assembled' parts. If these all came unassembled, we could save alot of time disasembling.
Vegetable rights and Peace
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04-03-2010 01:12 AM  10 years ago
basmntdweller

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Indianapolis IN

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I have been on both sides of this fence. I have disassembled, cleaned and checked closely the last OS 50 Hyper I bought. It still dumped the rear bearing in it's first gallon. Many plank engines I have bought went straight on the plane and never had an issue til the plane died. I tend to be more meticulous on my heli engines because most are more of a PITA to pull out and work on than plank engines. I think odds are good that running an OS or YS out of the box won't lead to any problems but there are those ones that get past QC.
I haven't bought 100s of engines but I have only found shavings in two engines in my 30+ years of RC and CL. I can recall one bad bearing in a new Saito and a bad idle needle in another Saito. There were other issues I'm sure but that's all I can remember at the moment.

Matt

Stupid people have no idea how stupid they are!!!
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04-03-2010 01:34 AM  10 years ago
rcjon

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Macon, GA

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If I buy a new engine, I'm going to fuel it up and fly the snot out of it. If it fails in the 1st gallon (and it hasn't been run lean) the OEM is replacing it or they lose a customer.Ask your doctor if your heart is healthy enough for Radio Control Helicoptering.
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04-03-2010 01:55 AM  10 years ago
Gearhead

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rcjon,, they don't care if they loose you !! there are thousands behind you buying from them..Jim
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04-03-2010 02:42 AM  10 years ago
rcjon

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Macon, GA

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And many thousands of companies have failed by not standing behind their products.Ask your doctor if your heart is healthy enough for Radio Control Helicoptering.
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04-03-2010 05:31 AM  10 years ago
AWittleWabbit

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O.C., CA

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I think we should at least tell whoever made the motor that fod was found in their BFM 59.9 motor or whatever model it is. Maybe if they heard it enough they will be more diligent about fod. I wonder how much feedback the actual mfg gets from the service centers? I've read enough about one service center here that has me thinking the service folks are too busy unbunching their undergarments.Heli-itis sufferer.
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04-03-2010 12:03 PM  10 years ago
Eury

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Dover NH USA

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I don't disassemble my new engines, never have. I go over all the bolts, and the backplate comes off for the crank lock tool while I put the fan on, but beyond that I don't mess with them. I've never found anything when I pull the backplate off, and never had a problem with any of my motors.

Maybe I'm just lucky. I do take apart anything preassembled on any helis I buy, but I've never felt the need to take apart an engine.
Nick Crego

Citizen #0168
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04-03-2010 02:10 PM  10 years ago
Mutt

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M ca usa

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I have never had to tear a brand new os or any other brand of engine down. I have yet to lose a rear bearing on the os 50 either. Same goes for a couple of my flying buddys they all run the same helis and engines never any issues never tear them down before running them. Check the bolts but thats it. Only guys we see with troubles at the clubs I go to are the ones running 30% but they are not tearing down thier new engines either to clean out any garbage.
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04-03-2010 03:12 PM  10 years ago
airdodger

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Johnston USA

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One of the best points made was to fit the liner to the case properly. The other good reason is people assemble the engines and that person could have been distracted, people make mistakes, good to check first. Clean the bearings a lot of them seem to have rough spots which is contamination of some sort, even new ones in packages never seem to be smooth until cleaned. Just my opinion, only do the check if you are sure of your abilities to make an improvement and not damage any parts.Chris
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04-03-2010 06:32 PM  10 years ago
wzak29

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Lake Peekskill NY USA

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I can’t believe workmanship has gotten this bad, this is about the craziest thing I ever heard of! The last motor I bought was a Evolution 40 and they brag that there motors come broken in, so far so good, that was a year ago. Hay do you think in the future if I buy a Toyota I will need to rebuild the engine?
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04-03-2010 07:33 PM  10 years ago
Peefor

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Norfolk UK

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Hay do you think in the future if I buy a Toyota I will need to rebuild the engine?
No, but be careful of the brakes.

Pete
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04-03-2010 07:34 PM  10 years ago
LonR

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Macomb,Mi

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You mean the sticking gas pedal ..600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan
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04-03-2010 10:04 PM  10 years ago
PBusch

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Minnesota

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So whats the trick to getting the liner to fit the case properly? All of my liners have fit tight, sometimes have been difficult to get out.
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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › new engine tear down.....
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