NSI Reduction Drive Temperature??

[asra]

I've got an NSI reduction drive on my EA81. Is there any point monitoring the NSI oil temperature or pressure? Will the temperature or pressure give me any indication of the health of the reduction drive?I tend to do long flights, and when I scan my instruments I get a good idea of what's happening with the engine, but I am left wondering about the status of the NSI.Any thoughts appreciatedRoss B

[birdy]

I know nuthn bout NSI redrives Ross but wots the good of an oil temp gauge if theres no oil init???Same goes for water temp gauges, it'll only tell you a hose has blowen off AFTER the engine has locked up.I have a water alarm fitted to every water cooled machine i own, gyro x2, truck, bullcatchers, utes.......... .Its amaz'n how many times they'v saved a rebuild coz of a blowen hose or sumthn cheap like that, especialy the catchers.[ and the ferel .... twice.]I'd recon the same gadget would work in oil as in water??Ignorance is bliss............but only till you realise you were.You can always get the answer you want, if you ask enough experts.

[Scott Hogan]

Hi Ross,I know a little bit about NSI redrives.I started to learn to fly gyros 11 years ago, with two different instructors. Steve England and Ian Morecombe. They both had NSI reduction drives on their aircraft. Ian is still flying around with the same NSI reduction drive that I did most of my training on. I don´t know how many hours he has on it now but it´s still going with no trouble. As a matter of fact, I was pushed around by it last Saturday for a while.It´s probably worth giving him a call to discuss.Hoges

[Tim]

Ross an electronic metal chip detector seems to be the go for gearboxes. Helios use them in their transmissions. Don't know where you would get hold of one though.Tim McClure

[Adrian S]

Ross,I just checked with a mate that operates a NSI and he checked the manual for the max operating temp - 130 C. I suggest you use a Temp strip on the gearbox housing and check the max temp it reached after flogging it in the air for at least 30mins. In my experience the NSI runs near its temp limits.Regards,Adrian.

[asra]

Can someone tell me where one can get these "Temp Strips" in eastern Australia?Fish.