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HelicopterThunder TigerOther › What pipe with OS 50
04-25-2002 03:30 PM  15 years agoPost 1
rcman

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Logan, Utah

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What is the best pipe to run with the OS 50? I am running a Futaba governor so I don't thing I can run a tuned pipe
Thanks

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04-25-2002 03:52 PM  15 years agoPost 2
rcman

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Logan, Utah

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muscle pipe

Hi furyflyer
were would I pick up one of them
And I take it you have had better luck with out a governor
Thanks

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04-25-2002 04:00 PM  15 years agoPost 3
Itsindilas

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Greece-Athens

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By a Weston Pipe, I work my OS 46 andGV-1 with a low nitro one and I am very satisfied.
There is available and a high nitro one.

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04-25-2002 06:15 PM  15 years agoPost 4
The_Dave

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Las Vegas / Pahrump, Nevada

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BULL

Use the GV-1 and the M-pipe, it works great!

That is a load of crap about the pipe being a governor. It is true that if you go above the "power band" of the engine/pipe combo by allowing RPM's outside of the tuned range it will cause a slight loss in power which will result in the RPM's dropping back down towards the tuned RPM range but if you think it is going to act like a governor you are simply foolish.

Additionally, I highly recommend that you do not use 30% fuel on an engine running a tuned pipe. You engine will hammer and detonation will eat glow plugs at the rate of one per flight (if your lucky!)

I am running a V-Tech (grand daddy of the MP) on my fury 50. I am also using a GV-1 and it works flawlessly.

Remember, the MP is a tuned pipe and requires you to tune it to your engine. I would suggest, that you gain a full understanding of tuned pipes, two-stroke engine theory, and valve timing before attempting the install. Please see this article I wrote for Off-Road.com:
http://www.off-road.com/atv/400ex/two_strokes.html

Good Luck!

Mark McAlpine - 2005 - We will never forget.

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04-25-2002 07:17 PM  15 years agoPost 5
The_Dave

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Las Vegas / Pahrump, Nevada

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Sure!

Did I say I know more than Curtis? Perhaps he is just giving advice so as to keep YOU out of trouble. He knows that many people do not understand how to tune a pipe so he might just be trying to keep the installation simple so as to achive success.

You should really stop reading things into posts.

Mark McAlpine - 2005 - We will never forget.

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04-25-2002 08:02 PM  15 years agoPost 6
The_Dave

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Las Vegas / Pahrump, Nevada

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Facts

My Facts are straight!

I have been flying V-tech pipes for 15 years, I know how to tune a pipe and I fully understand how a pipe works. Did you take two minutes to read the article I directed you to? The GV-1 pipe combo works for me because I know what I am doing not because the planets all lined up on the day I installed it.

Consider the following:

A) "The pipe acts like a governor” I guess that is true in so much as the pipe and it’s RPM window can affect engine RPM. It however, does not act like a true governor. It has a very narrow range of operation and unless your throttle and pitch curves are dead on the pipe governing effect will be non-effective.

B) "Why does he (Curtis) NOT recommend using one with the MP pipe?" Well, it is my guess that he knows that people will not get this combination to work correctly and if it is not set up right the governor will just compound the problem. Keep in mind that it is usually a beginner or someone who has zero experience with a tuned pipe that asks these questions so he probably gives that answer to keep them out of trouble.

So, how does the governor compound the problem and why is it not
recommended to use it with a MP?

Simple, the only job of a governor is to maintain a pre-set RPM. It does not care about anything else, just that RPM. The MP on the other hand lives and dies by RPM. When the engine and pipe are in tune, they will make a great amount of power. Change the RPM and the engine will fall off of the pipe and the power output of the engine will drop. This is all well and good and with out a governor you would just fly with reduced power and engine RPM's, but if you have a governor installed the governor will just keep driving the throttle barrel more and more open trying to get to the set RPM and in the process of doing that will load the engine more. This will cause engine RPM to drop even more. The pipe will, because of the increased drop in RPM's will become even less effective. The governor will drive the barrel open all the way trying to get to the set RPM. This circle of events eventually will cause a total loss of power and most likely a flame out. So I imagine that is why the recommendation of not to use the GV-1 with the MP.

Can the GV-1 be used with a MP? Yep, and it works 100%
Can the GV-1 cause problems with a MP? Yep, if you don't know what you are doing.

Do I think I know more than CYB? Nope, never said I did but keep in mind that CYB questioned what the experts said to him back when he was just a beginner. That is most likely how he got to where he is today, by not taking everything at face value.

Mark McAlpine - 2005 - We will never forget.

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04-25-2002 08:27 PM  15 years agoPost 7
The_Dave

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Las Vegas / Pahrump, Nevada

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Well, they are both tuned pipes. The V-tech is more touchy to tune than the MP as it has a narrower "power band". I have however set up many MP's for other people so I do have experience with them.

Regards,

Mark McAlpine - 2005 - We will never forget.

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04-25-2002 09:29 PM  15 years agoPost 8
Vance

rrVeteran

York ,PA

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I fly a R-60 with a MP and GV-1 without problems, and with 30%CP. I guess I'm really going against the grain, but it works for me.
I also fly a R-50 with just the MP & 30%CP, works like a charm.
Vince D

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04-26-2002 05:32 AM  15 years agoPost 9
Stet

rrElite Veteran

Key Largo FL

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Hatori 666

I put a hatori 666 on mine, and found the performance to be unbelievably good. Try it, you won't be sorry.

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HelicopterThunder TigerOther › What pipe with OS 50
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