Notices
YS Engines Support Direct support from YS Performance Engines by Dave Shadel

My first YS engine

Old 04-19-2002, 04:39 PM
  #1  
Wonder
Senior Member
Thread Starter
My Feedback: (7)
 
Join Date: Feb 2002
Location: Brookville, PA
Posts: 356
Likes: 0
Received 0 Likes on 0 Posts
Default My first YS engine

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
Old 04-19-2002, 05:07 PM
  #2  
AV8TOR
Senior Member
My Feedback: (2)
 
Join Date: Dec 2001
Location: Benbrook, TX
Posts: 427
Likes: 0
Received 0 Likes on 0 Posts
Default My first YS engine

Powermaster YS blend 20/20 is the fuel of choice for the YS line. You have the right plug OS-F. Be careful you donít over rev with a 14x6 prop. That engine can handle a 14x10.
Old 04-19-2002, 08:29 PM
  #3  
can773
My Feedback: (1)
 
can773's Avatar
 
Join Date: Jan 2002
Location: Calgary, AB, CANADA
Posts: 2,286
Likes: 0
Received 2 Likes on 2 Posts
Default My first YS engine

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
Old 04-22-2002, 02:47 PM
  #4  
Wonder
Senior Member
Thread Starter
My Feedback: (7)
 
Join Date: Feb 2002
Location: Brookville, PA
Posts: 356
Likes: 0
Received 0 Likes on 0 Posts
Default My first YS engine

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
Old 04-28-2002, 04:49 PM
  #5  
Dave Shadel
Senior Member
 
Join Date: Apr 2002
Location: Gardnerville, NV
Posts: 5,385
Likes: 0
Received 1 Like on 1 Post
Default My first YS engine

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!!!!
Old 04-28-2002, 09:09 PM
  #6  
Fuelman
My Feedback: (6)
 
Join Date: Dec 2001
Location: Jordan, NY
Posts: 1,109
Likes: 0
Received 3 Likes on 3 Posts
Default My first YS engine

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
Old 04-29-2002, 12:26 AM
  #7  
Wonder
Senior Member
Thread Starter
My Feedback: (7)
 
Join Date: Feb 2002
Location: Brookville, PA
Posts: 356
Likes: 0
Received 0 Likes on 0 Posts
Default My first YS engine

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
Old 05-12-2002, 03:17 AM
  #8  
crossed thumbs-delete
Member
 
Join Date: Feb 2002
Location: KY
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default My first YS engine

Dave

I have a new YS63 and have tried everything to start the engine. Do you have any suggestions?
Old 05-12-2002, 12:10 PM
  #9  
Dave Shadel
Senior Member
 
Join Date: Apr 2002
Location: Gardnerville, NV
Posts: 5,385
Likes: 0
Received 1 Like on 1 Post
Default My first YS engine

What does the engine do? I need a bit more info. Dave
Old 05-13-2002, 03:12 AM
  #10  
4*60
My Feedback: (41)
 
Join Date: Mar 2002
Location: Shuswap, BC,
Posts: 1,753
Likes: 0
Received 1 Like on 1 Post
Default My first YS engine

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!
Old 05-13-2002, 12:21 PM
  #11  
Dave Shadel
Senior Member
 
Join Date: Apr 2002
Location: Gardnerville, NV
Posts: 5,385
Likes: 0
Received 1 Like on 1 Post
Default My first YS engine

If it works for you, that's fine. If you have problems when the weather cools off, raise the nitro content of the fuel.
Old 05-13-2002, 01:16 PM
  #12  
HarryC
My Feedback: (1)
 
Join Date: Feb 2002
Location: private, UNITED KINGDOM
Posts: 3,672
Likes: 0
Received 25 Likes on 15 Posts
Default My first YS engine

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

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.