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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> YS Engines Support >> My first YS engine
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My first YS engine - 4/20/2002 1:39 AM   
Wonder



Posts: 356
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Joined: 2/5/2002
Last Login: 7/27/2011
From: Brookville, PA, USA
Status: offline 		I bought a YS-91-C for sport flying on a Sig Hog Bipe.

I bought an OS-F plug, a Zinger 14X6-10 prop for break-in and a Zinger 15X6-10 for after break-in.

Now for the hard part, what fuel???

I have been reading for some time now many debates over synthetic; castor; synthetic castor combination.

Every engine expert, every fuel expert, and everyone inbetween all have very different opinions of what is best.

The YS manual states 15-20% synthetic or castor or a combination can be used.

What oil do you recomend and at what percent min. / max.

Also is 15% nitro okay for sport flying, I know most people use 20% but I do most of my flying about 1/2 throutle most of the time anyways.

Thanks for any help in this matter,
Tim

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My first YS engine - 4/20/2002 2:07 AM   
AV8TOR


 

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From: Benbrook, TX, USA
Status: offline 		Powermaster YS blend 20/20 is the fuel of choice for the YS line. You have the right plug OS-F. Be careful you don’t over rev with a 14x6 prop. That engine can handle a 14x10.

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My first YS engine - 4/20/2002 5:29 AM   
can773



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From: Calgary, AB, CANADA
Status: offline 		Use a good quality fuel with a minumum of 18% oil, synthetic will work the best since it will keep the motor nice and clean. Castor has a tendancy to gum up in the regulator.

You can use 15% nitro but you will get much better performance from 20%-25%, or even 30%. Prop the motor so you spin 8500-9000 on the ground.

F plug is a good choice. After break in you will likely need to reset the valves.

Enjoy


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My first YS engine - 4/22/2002 11:47 PM   
Wonder



Posts: 356
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From: Brookville, PA, USA
Status: offline 		AV8TOR,

Yes, the YS 20/20 does seem to be the choice of many. I was hoping to find an alternitive that I could buy locally so I would not have to mail order a full case.

As for the prop it is not a 14X6 but a 14X6-10. The pitch is 10 near the hub and tapers to 6 at the tip.

Thanks to both for the replys, I posted in the "YS engines support" hoping to hear from Dave S. on what other fuels he would recomend, if any.

Thanks again,
Tim

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My first YS engine - 4/29/2002 1:49 AM   
Dave Shadel


 

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From: Gardnerville, NV, USA
Status: offline 		YS recommends 20% nitro and 20% oil in all of it's 4 stroke engines. Many of the top fuel manufacturers sell this blend known as YS 20/20. In warmer weather some of the YS engines will do ok on less nitro. Our recommendation is to go easy on any castor oil in the fuel. A couple of percent is OK, but any more is asking for regulator problems. Those of you with corporate funding may want to try 30% Helicopter fuel. Hard on the wallet, but very addictive!!!!

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My first YS engine - 4/29/2002 6:09 AM   
Fuelman


 

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From: Jordan, NY, USA
Status: offline 		Wonder,
You have the east coasts largest manufacturer of glow fuel near you. Give S&W a call or look in most of the eastern PA hobby shops. His 20/20 is a true 20/20 all synthetic and is an excellent fuel.

http://www.s-whobby.com/prices.html

Fuelman


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My first YS engine - 4/29/2002 9:26 AM   
Wonder



Posts: 356
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From: Brookville, PA, USA
Status: offline 		Dave,
Thanks for the info. I will go with the 20% nitro 20% oil. I am leaning towards 18% synthetic 2% castor.

Fuleman,
Thanks for the web site, I e-mailed them about shipping cost since they are 5 hours away.


Tim

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My first YS engine - 5/12/2002 12:17 PM   
crossed thumbs-delete


 

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From: KY
Status: offline 		Dave

I have a new YS63 and have tried everything to start the engine. Do you have any suggestions?

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My first YS engine - 5/12/2002 9:10 PM   
Dave Shadel


 

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From: Gardnerville, NV, USA
Status: offline 		What does the engine do? I need a bit more info. Dave

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My first YS engine - 5/13/2002 12:12 PM   
4*60


 

Posts: 1647
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From: Shuswap, BC, CANADA
Status: offline 		Dave:
Back to the fuel. I'm using Cool Power 15% 4 stroke fuel and my 91 runs like a dream. Is this good??
Thanks!

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My first YS engine - 5/13/2002 9:21 PM   
Dave Shadel


 

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Last Login: 4/16/2009
From: Gardnerville, NV, USA
Status: offline 		If it works for you, that's fine. If you have problems when the weather cools off, raise the nitro content of the fuel.

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My first YS engine - 5/13/2002 10:16 PM   
HarryC


 

Posts: 2946
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From: private, UNITED KINGDOM
Status: online 		I run my YS91FZ on 10% nitro (its very expensive stuff in Britain!) and get 9000 revs on an APC 14x10 at absolute peak. Motor is still not run in, had about 7 tanks through it so I back it off a few hundred revs at the moment.

Harry

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       Post #: 12

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All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> YS Engines Support >> My first YS engine
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