Dear All,

I was reading various engine cleaing tips & technique & I wanted to know has anyone open the inside of the MVVS engine & what the normal dyration for inside maintanance.specifcally.

I would be using the normal 20%castor oil as Im trying to look out for De-gummed castor as I understand that castor normally causes a varnishes & therefore regular maintanance is very much required.

How do you disassemble all the parts?One more question where I stay the temp Is approx 33 degree C & Humdity is 80%
& I would not be flying for atleast 4 months as it would rain & where I fly,there would be real tall grass of more than 4 to 5 ft .

awating for your advice

Peter,

There are no cleaning intervals for model engines.
If the engine is run with Castor oil, it should be cleaned before storage and oiled with storage oil, or air tool oil (Sewing machine oil is not a very good storage oil.).

Otherwise, clean it when you see it is dirty. Caked varnish outside usually goes on the inside too. If you feel it does not turn smoothly, it could be Castor gum in the bearings.

Sincerely,

Dar,

Any specification of the storage oil????

Peter,

No, but air tool oil is surely available in India.
All car garages that have air powered tools know where you can get it.

That is all I know.

Sincerely,

Peter
I use only 20% castor in all my engines. Castor is the best preservative against rust that you can get but after a few years it can start to thicken and go gummy. The varnish that you see sometimes is a lubricant in itself and is the final protection against a very lean run if the temp goes so high that even the castor starts to burn.

The only thing you need do for protection (given that you use castor) is this. On the last flight every day run the engine at full throttle then take off (preferably) or pinch the fuel line and wait for the engine to run out of fuel. If you take off the fuel line be aware that it'll spray fuel out because of muffler pressure if you don't pinch it shut. Wait for the pressure in the tank to bleed back into the muffler before reconnecting the line.

dea all,

thanks but pls adv the for opening the eng,which part to open.head ,back plate that its or any thing else

Peter,

You can open the backplate and remove the carburettor, the glow plug and the muffler.
Clean in gasoline, or kerosene (use gloves on your hands), dry it, oil liberally and turn the engine a few time to distribute the oil.

Cover in a plastic bag to keep dust away.

Sincerely,

Dar,

THANKS