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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › O.S 91 hz-r 3D YES!!
04-11-2015 03:15 AM  3 years agoPost 1
slayer

rrApprentice

las vegas n.v

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folk's this engine rock's 15% nitro and at break in setting's and 50% at half stick this thing is pulling some power what the hell can this thing do when lean out well dont think I'am going too do that this is plenty for now.

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04-12-2015 03:52 AM  3 years agoPost 2
wjvail

rrKey Veteran

Meridian, Mississippi

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What engine are you flying?

Bill

"Well, Nothing bad can happen now."

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04-15-2015 07:02 AM  3 years agoPost 3
slayer

rrApprentice

las vegas n.v

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O.S HZ-R
o.s hz-r like the post says

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04-15-2015 07:47 AM  3 years agoPost 4
wjvail

rrKey Veteran

Meridian, Mississippi

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O.S HZ-R
o.s hz-r like the post says
There are at least 5 O.S. HZ-R engines spanning from the .55 to the 1.05. Which one were you commenting on?

I've run the 55, 91(just HZ, not the 3D or 3C) and 1.05HZ-R and find them all to be fine engines. Most recently I've been running the 1.05 and find it to be the "90" class engine I've been looking for for many years. Reasonably good power and really a sweetheart to tune.

https://www.google.com/search?q=os+...ved=0CAcQ_AUoAg

"Well, Nothing bad can happen now."

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04-15-2015 08:28 AM  3 years agoPost 5
slayer

rrApprentice

las vegas n.v

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o.s hz-r
OW sorry I HAVE THE HZ-R 91 3D I AM LOOKING TOO GET THE 105 NEXT AND I HAVE A 91 HZ IN MY NEW HELI that I hav'int tried yet.

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04-17-2015 07:17 PM  3 years agoPost 6
utahbob

rrVeteran

St. George Utah

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who needs more?
Personally. .I can't see why anybody but maybe the top pilots would want more power..I was pretty dissapointed when OS stopped making the 91hzr. .they finally had a winner then they discontinue it!

I do a great decending funnel!

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04-20-2015 02:14 PM  3 years agoPost 7
Richardmid1

rrProfessor

Leeds, England

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The 3D Speed motor is just awesome especially with the OS powerboost pipe, as much power as a 105 if you ask me!

60% of the time, it works every time!

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