RunRyder RC
WATCH
 1 page 1304 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › Os 105 hz-r vs 105 hz
08-04-2012 03:12 AM  9 years ago
Topic Vote0Post 1
cmdiduca

rrVeteran

Mt. Pocono, Pa

MyPosts All Forum Topic
Os 105 hz-r vs 105 hz
I am going to need a new engine pretty soon and want to see and hear about the real life differences between the two. I see on paper the difference is .1 hp.
I am primarily a ys guy and may want to switch to os for the whiplash.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-04-2012 05:06 AM  9 years ago
marc8090

rrElite Veteran

Long Island, N.Y.

MyPosts All Forum Topic
I don't have a 105, but have 2 91HZ-R's and ran YS for years. I would go for the HZ-R hands down. It uses a pressurized fuel tank and check valve like a YS where the regular version uses muffler pressure. Forget about what the horsepower numbers say, the consistent run of the HZ-R makes it worth every penny.
SHARE  PM  EMAIL  Attn:RR  Quote
08-04-2012 10:20 AM  9 years ago
Helicrazy4

rrVeteran

West Virginia

MyPosts All Forum Topic
100% HZ-R hands down!Following Jesus
SHARE  PM  EMAIL  Attn:RR  Quote
08-04-2012 11:34 AM  9 years ago
Egroeg

rrApprentice

Cyprus

MyPosts All Forum Topic
R No Pitch...No Fun!
SHARE  PM  EMAIL  Attn:RR  Quote
08-04-2012 03:34 PM  9 years ago
unclejane

rrElite Veteran

santa fe, NM, USA

MyPosts All Forum Topic
I'll also suggest the HZ-R. The only reason I can think of for getting the HZ version is if you're accustomed to using a more conventional fuel system, i.e. a header tank and/or an outboard fuel pump or simply just a standard fuel draw system.

The DRS system is the first pump system OS has ever designed that actually works (look at the junkyards full of discontinued pump designs in OS's past engine lines) and they really hit the ball out of the park with it. It emulates the basic idea YS has used for a long time now (and I think it's actually based on another regulator design whose inventor I can't remember right now) which is why it works really well.

It gives utterly consistent running all the way through the tank and is generally pretty goof-proof AS LONG AS you are operating-room clean on the fuel system (i.e. you must run a fuel filter to the carby).

So it's worth the extra money, in my experience.

LS
SHARE  PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 1304 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › Os 105 hz-r vs 105 hz
Print TOPIC

 2  Topic Subscribe

Thursday, September 23 - 3:39 pm - Copyright © 2000-2021 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online