RunRyder RC
WATCH
 1 page 1631 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › comparison os 32 vs. irvine 36 vs. os 37?
09-07-2006 03:30 PM  14 years ago
Topic Vote0Post 1
abeille

rrNovice

Montreal, Quebec - Canada

MyPosts All Forum Topic
comparison os 32 vs. irvine 36 vs. os 37?
Hi,

All summer I have been using a os 32 in my sceadu evo 30. Last week I received a free Irvine 36 ringed engine from a pilot at our field, who recently switched to a larger heli. Before receiving this, I had been thinking about buying an os 37 for increased power.

I am curious would anyone who has used more than one of these engines comment on how they compare in performance (and fuel consumption)? Is the Irvine 36 significantly more powerful than the os 32 - I am not sure if a direct comparison between two manufacturers is accurate.

As a side question, which fuel would you recommend for the Irvine 36?

Thanks!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-08-2006 12:08 AM  14 years ago
Chief_USN

rrKey Veteran

Chesapeake, VA

MyPosts All Forum Topic
I just swapped my Caliber 30 from a 32 to the 37 and all I could say was WOW!!! The heli came to life with the new 37. Coupled with the right pipe, it would do your EVO justice. I'm not sure about the Irvine but you could probably do some research and compare RPM and HP on the two and see what the difference is. I use CP30 on my 37 and I'm running the Toki pipe with it.

Chad
Team HeliProz 12-14
US Navy Chiefs...Unity, Service, & Navigation to the Fleet since 1893
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-08-2006 01:56 AM  14 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
fromme2u...
Hey, I have an OS .37 in a Century Hawk and was running it with a Revolution 30 sized muffler (one it came with) and found that no matter how rich I set it (both ends), it was still getting hot and just not producing allot of power (it flew, but not to my liking). Since I've read several other posts about using the Toki muffler on the .37 and since I had one from my Toki .40 that let a crank go, I decided to try it. Wow! is all I can say. Without changing the needle settings from the other muffler, I just bolted it on an ran it. All the difference in night and day. I'm glad I went ahead and tried it even after several have not had good luck with the Toki muffler and the OS .37. Oh and it's not running hot anymore either!

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-08-2006 09:47 PM  14 years ago
gkoutsis

rrKey Veteran

Athens Greece

MyPosts All Forum Topic
My Shuttle with the 37/MP2 has identical climb rate to my Hyper 50.

I think the best engine for the 30 class birds is the OS37. Some will say the toki40 as well but for some reason I don't trust Toki as much as I trust OSmax.
George
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-09-2006 12:23 AM  14 years ago
nivlek

rrProfessor

Norfolk England

MyPosts All Forum Topic
I have a few of Irvine 36H engines . One ringed , one ABC and one recently aquired 36F1 ABC . The ringed one was given to me by a fellow club member who supposedly had trouble with it , I've only used that engine in afixed wing model , but it's been as good as any engine that I've ever owned .
The ABC 36H spent three hard seasons in a Hirobo Shuttle , and never missed a beat fitted with either a muffler or tuned pipe . I used to run it on a synthetic /castor blend 9% synthetic 6% castor and either straight (zero nitro) or 5% .
However , I would recomend using 18% oil (preferably with a drop of castor) - Formula Irvine uses 18% Klotz Super Techniplate (an 80% synthtic 20% castor blended oil) and 5% nitro . I wouldn't use more than 10% nitro .
When the Irvine 36 first appeared , in the early nineties , it was a class leader in power and performance , many people modified the engine for even higher power - hence the F1 variant being released .

Personaly , especially if you wish to use less expensive low nitro fuel , I would say that the Irvine 36 would pee over the OS32 .
At the end of the day , it gets dark .
SHARE  PM  EMAIL  Attn:RR  Quote
09-09-2006 12:25 AM  14 years ago
deafheliflyer

rrKey Veteran

Arizona

MyPosts All Forum Topic
hi
People seem to not understand..

Os .37 for max power MUST HAVE the right muffler (hatori, toki, MP2).. People keep running these great engines on crap mufflers(century, etc)

My .37 was VERY SIMILIAR to power as my Evo 50.... I had a hatori on it..

Get the right pipe and the .37 will DO ANYTHING a 50 sized machine can do..

For Reals!!!
Crash-Prone and overcoming it!!!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-09-2006 01:43 AM  14 years ago
fishbat

rrNovice

Edmonton, Alberta Canada

MyPosts All Forum Topic
[quote]Os .37 for max power MUST HAVE the right muffler (hatori, toki, MP2).. People keep running these great engines on crap mufflers(century, etc)[quote]

I agree totally, had an O.S. 37SZ-H in a Hawk Pro with the stock muffler.(It was a dog)

Put an MP2 pipe on it..... can you say "more power"!

Kent
Century Hawk Pro
TT E325
Blade CP
picoo z
SHARE  PM  EMAIL  Attn:RR  Quote
09-09-2006 10:33 PM  14 years ago
Sig Dawg

rrApprentice

Yorkton, Sask., Canada

MyPosts All Forum Topic
For the OS 37 SXH does removing the baffle on the stock pipe make a noticable difference? I did some mods to my baffle and it runs good, but the engine does seem to run at little hot even when rich. Would going to the toki muffler help? If I can find one that is in stock, it seems to be a popular item.Jason
SHARE  PM  EMAIL  Attn:RR  Quote
09-09-2006 11:11 PM  14 years ago
Chief_USN

rrKey Veteran

Chesapeake, VA

MyPosts All Forum Topic
I wouldn't remove the baffle because you need some type of back pressure. If you run a straight pipe with no back pressure you can actually damage the engine. The best thing to do if you want to try and get more power out of a stock muffler is to drill 5/16" holes in the baffle. Start out with one or two and see what it does. Add more if needed. I wouldn't go more than six though.

Chad
Team HeliProz 12-14
US Navy Chiefs...Unity, Service, & Navigation to the Fleet since 1893
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-09-2006 11:57 PM  14 years ago
Sig Dawg

rrApprentice

Yorkton, Sask., Canada

MyPosts All Forum Topic
I already drilled 5 holes in the baffle, and cut the rear trumpet off,it just looked so restrictive. My needles are set similar to what other have here and it runs pretty good, just seems hot. I guess the only way to really tell is to add a temp guage. Works well in my evoJason
SHARE  PM  EMAIL  Attn:RR  Quote
09-10-2006 12:56 PM  14 years ago
deafheliflyer

rrKey Veteran

Arizona

MyPosts All Forum Topic
hi
for 39.99 a toki muffler will give the .37 some serious power.. Thats what I used before I got the Hatori..
Crash-Prone and overcoming it!!!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-10-2006 03:29 PM  14 years ago
Sig Dawg

rrApprentice

Yorkton, Sask., Canada

MyPosts All Forum Topic
Thanks, Looks like I'l be getting a pipeJason
SHARE  PM  EMAIL  Attn:RR  Quote
09-10-2006 07:30 PM  14 years ago
Butch

rrVeteran

New York

MyPosts All Forum Topic
os32, a very fine engine IMO, is minimum power for 30 class helis. The 37 has more power along with greater fuel consumption. Example: The 37 in a Rappy30v2(under power) empties a header tank within a blink-of-an-eye!
Did you concider an upgrade with 50 size components and engine?
The Whirlybug Bit Me!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-10-2006 09:52 PM  14 years ago
abeille

rrNovice

Montreal, Quebec - Canada

MyPosts All Forum Topic
Thanks for the answers so far.

To answer butch, I believe there will be a 50 in my future however at the moment I am happy with a 30. I appreciate the long flights (half hour on my 32) and lesser fuel consumption and I'm not too keen on spending the extra money at this time. I have all my life to fly helis so I will save some fun for the future

My main beef with the 32 has been overheating during extremely hot days, which made me think of a 37. But those are over for the year so lately I'm happy with the 32, though I might try the irvine 36 since I already have it. I am still curious to see how it compares to the os32. The specs don't necessarily make it look like a clear improvement.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-10-2006 10:06 PM  14 years ago
nivlek

rrProfessor

Norfolk England

MyPosts All Forum Topic
Don't worry , the Irvine 36 will pee over the OS32 . Just make sure that you use a muffler large enough to allow it to breath .At the end of the day , it gets dark .
SHARE  PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 1631 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › comparison os 32 vs. irvine 36 vs. os 37?
Print TOPIC

 5  Topic Subscribe

Friday, December 4 - 7:14 am - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online