OS FS-52 Four Stroke RC Glow Engine Reassembly Part 1

[spitfire9341]

I don't understand the cam instalation, exactly where should the dot line up ?? Surely this is extremely critical. Please help as I have reasembled my engine and need cam info. thanks

[rcdieselrc]

@spitfire9341 At 3:42 in the clip the dot on the cam should be behind the rod I'm holding with the piston at top dead center.

[MaxwellForce]

I have just bought an OS 30 FS surpass, lovely little engine. Is it necessary to put some lubricant on the rockers/valves and the camshaft before the first startup, or do I just start it up? I’m planning on running it with 18% synthetic oiled and 2-3% castor oil, with about 7 % nitro. How do I protect the engine from corrosion from the nitro, or is this not a problem with four stroke engines?

[rcdieselrc]

@MaxwellForce I add oil to the rocker well before running them as OS engines are typically shipped dry. Use after run oil as instructed in the manual. The corrosion is problematic in both two stroke and four stroke glow engines.

[soverato3]

it has a piston ring ?!?!?! woww

[quietfamily]

Are the intake and exhaust valves a different size or does the manufacture not see an advantage to this in such a small scale.

[rcdieselrc]

@quietfamily The advantages exist even at this size. Only the smallest glow four stroke engines, smaller than.40ci or 6.5cc have valves of the same size.

[wigitinnz]

Hi, Would it be possible to partly insert the piston just past the ring into the sleeve then slide the sleeve into the engine . then insert the piston pin through the hole as you have shown ?,, Cheers.....

[rcdieselrc]

Yes, it could be done that way. I've done it both ways. I found that parts are more difficult to align when the piston is restricted by the sleeve.

[vanepico]

I have an OS48 FS with a broken cylinder head, purely cosmetic but I will keep these videos favourited!

[PukkPukk]

no oil in the crank case??

[rcdieselrc]

The oil I put in will be enough. More won't hurt anything, it just gets blown out the breather. OS ships engines dry. I add oil before running a new engine the first time.

[zatlapp]

What's in that green thing?

[rcdieselrc]

Lubricating oil so it's not started dry after rebuild.

[c349928]

I understand. I have no intention on disassembling a new motor at this point in time. But it is important to feel comfortable about going into an engine to fix it, should something go wrong or the valves need adjusting. Thx again.

[rcdieselrc]

Rarely does something go wrong. Valves should be checked after break in. After that maybe once a year. If you put it away for some time, follow the instructions to clean and preserve the engine to prevent it from gumming up.

[c349928]

Great set of videos. I just got an OS .56 FS-a and I was wondering how sensitive these engines were to being & re-assembled. Thanks for giving me some confidence.

[rcdieselrc]

As long as you are careful about keeping things clean and follow proper procedure, they can be taken apart. I wouldn't do it just for fun with a new engine. The last thing you want to happen is drop and damage a part or lose a part.