RunRyder - New to 90's I got as brand new OS Max-91SZ-Hring and it came with extra gaskets

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Engines Plugs Mufflers Fuel > New to 90's I got as brand new OS Max-91SZ-Hring and it came with extra gaskets

MolokaiBoy
Veteran
Location: Kailua-Kona,Hawaii USA

Well I am new to 90's so my question is the extra head gaskets that are 0.1mm and 0.2mm that came with the engine to be installed before flight or can the engine be run as is? Do the diferent gaskets creat more or less compression or something. Please advise.

This will be going in a Vibe 90 with a MP2 pipe.

Les
Life is like a roll of toilet paper...the closer it gets to the end, the faster it goes...

05-05-2008 07:09 PM

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hornet dave
Veteran
Location: Pittsburgh PA USA

if you are using 30% fuel, put all 3 head shims into the motor.

LaHeli Maxir - The only micro that matters

05-05-2008 09:43 PM

MolokaiBoy
Veteran
Location: Kailua-Kona,Hawaii USA

Wow only one response. C'mon all you 90 pilots chime in.

Les
Life is like a roll of toilet paper...the closer it gets to the end, the faster it goes...

05-10-2008 12:28 PM

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jsenicka
Key Veteran
Location: Hampton VA

30% needs at least .016 (the 2 thick ones) so as to not detonate. If you are at sea level, and in warm conditions (I fly in Southern VA), then all three gaskets give you .020, and it is a bit easier to tune.
I can run .016 in mine, but if it gets hot I get some cackling before I make really good power.

Jim Senicka
2x R50V2/OS50 - 3x R90/OS91 - TREX450SE

05-10-2008 05:21 PM

Eury
Elite Veteran
Location: Ankeny, IA, USA.

You only got one response, because you got a good one right off. I'm at about 900 MSL, and I found that 3 worked the best on mine here. there wasnt' much of a noticable performance difference between 2 and 3, but it was easier to tune and seemed a bit smoother.

Nick Crego
Never trust a big butt and a smile

05-10-2008 07:07 PM

MolokaiBoy
Veteran
Location: Kailua-Kona,Hawaii USA

Ok thanks for the help guys, I will be installing the two extra gaskets that came with the engine.

Les
Life is like a roll of toilet paper...the closer it gets to the end, the faster it goes...

05-10-2008 09:05 PM

HOMEPAGE

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Engines Plugs Mufflers Fuel > New to 90's I got as brand new OS Max-91SZ-Hring and it came with extra gaskets

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