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12-15-2013 07:53 AM  5 years ago
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Saleh

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Kuwait

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Stratus New Engine
Hello

I have tried testing my stratus after more than 2 years, anyways it seems that it has a bearing issue so i guess its time for a new engine.

So what would you guys recommend for an 8:18 gear ratio
If you aint crashing you aint flyin
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12-15-2013 01:25 PM  5 years ago
rcnut

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Rockford, Illinois

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O.S. 105 pumped! Great powerTeam Miniature Aircraft
"I love the smell of Nitro in the morning!"
...Citizen 654!
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12-15-2013 05:31 PM  5 years ago
Saleh

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Kuwait

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what about the exhaustIf you aint crashing you aint flyin
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12-15-2013 06:44 PM  5 years ago
jbjones

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Columbus, Mississippi

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O.S. doesn't make "pumped" engines anymore (thank goodness), but the regulated (HZ-R models) 91s and 1.05 are quite good. I think you'll find any modern .91 or above suited for the machine.

I ran an O.S .91 SZ in my 8.18 Stratus. A 2K headspeed puts the engine just above 16K RPM (gear-ratio*target-headspeed = engine RPM).

Check out Funtech exhausts, they're pretty good too. I run an Hatori on my 1.05 and I'm pleased with it. I run Funtech on my Fury 55/O.S. 55. Good pipes.

Have fun with it, the Stratus is a fun machine. I miss mine!!

-Joey
J. B. Jones
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01-13-2014 02:22 PM  5 years ago
n8rloves2fly

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omaha,ne USA

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OS
OS sets the standards on quality! Lots of great pipes as combos.
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01-13-2014 02:59 PM  5 years ago
wjvail

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Meridian, Mississippi

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Do you have a budget? Like others have said, the Hatori/OS 1.05 is really the best you can do right now - but it's pricey. I just started running this combination in my Tempest and really like it. I've found the combination smooth, powerful, and easy to tune. In fact, it the smoothest, most powerful and easiest to tune big motor I've ever owned.

With the above said, I removed an OS .91HZ/Hatori to install the 1.05 and it hurt to do it. I also really liked the .91HZ I took out. It doesn't have the grunt of the 1.05 but it too is easy to tune and smooth. I mention this because there is a lot of good deals on .91HZ's right now. Like me, people seem to be pulling out great running .91s to install 1.05s and putting them up for sale. The 1.05/Hatori combination will set you back just under $800USD new. An OS .91/Hatori with light use can be had for 1/2 that - or less.

Remember, with the Stratus you will need to shim the engine properly at the backplate to get the correct clearance at the fan/clutch driver. You may want to stick to an engine that is from the same manufacturer that you are currently using. If you go from YS to OS, you may need to buy a new spacer/mounting plate for the lower frame. Not a big deal and not expensive but something to consider.

Avoid any engine with the following in the title:
Spec
1.20
SX
HS
Nova
Pump
Eny
Web

Bill
"Well, nothing bad can happen now."
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