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HelicopterMain Discussion › Long tuned pipes/mufflers?
01-27-2007 06:20 PM  10 years agoPost 21
SkateFreak

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Cambs UK

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http://www.justengines.unseen.org/pipesjen.htm

Would these be the pipes your talking about ?

My 50 needs a step up from the old TT muffler heh.

Would you suggest going for the 37/53 or the 60/90 for the OS50Hyper?

If their the one's i think i'll bite the bullet and get one next week Hehe.
Always liked pipes... seeeexxxxxyyyyyy heh.

best regards

-Jvr

Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher

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01-27-2007 06:33 PM  10 years agoPost 22
nivlek

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Norfolk England

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Those are the "Purple Pipes" that I refered to . They are of the flat plate reflector type rather than having a second cone . This makes them less peaky , but gives slightly less power boost - but they are ideal for our purpose . Personally , I'd go for the 60-90 size pipe - an oversized pipe may result in slighly less top end power , but one that is too small can cause overheating and frustration . Don't forget that you'll also need a suitable manifold for your heli .

An alternative , which would be cheaper and easier , is one of Weston UK's one piece Genesis mini-pipes for around £40 . Just fit and forget - nothing to tune to length ( I've got one for my OS50 ) .

At the end of the day , it gets dark .

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01-27-2007 06:44 PM  10 years agoPost 23
nivlek

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Norfolk England

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I can't say that I've actually seen these , but there is a 46/50 pipe for the Raptor advertised at £30 ! Might be worth a play .

http://ultimatehelicopters.co.uk/in...html&lang=en-gb

At the end of the day , it gets dark .

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01-27-2007 07:54 PM  10 years agoPost 24
SkateFreak

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Cambs UK

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That looks like a steal,
question is, would it restrict a hyper.... or can you just lengthen the mid bit?

-Jvr

Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher

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01-27-2007 10:38 PM  10 years agoPost 25
nivlek

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Norfolk England

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It's a case of "suck it and see" . Lengthening the pipe would just set the tuned length to a lower rpm , not really any help .

At the end of the day , it gets dark .

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01-27-2007 10:39 PM  10 years agoPost 26
SkateFreak

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Cambs UK

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oh..
oh dear lol..
i guess i'll jst have to wait and see if it works out atall...
i might be tempted to drop £30 on one though.
Just a little concerned it might restrict the hyper

-Jvr

Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher

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01-28-2007 02:17 AM  10 years agoPost 27
DS 8717

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This a Hatori 777 60 pipe with a Zimmerman SS header for a 60 size engine on a OS 50. It ran extremely well with lots of power and had a broad power band. It was easy to tune and worked well with a 2 speed headspeed. It is now on the YS 50 and it works really well with engine also, It likes high rpm 16500 to 16800. It actually works better on the YS 50 than a Hatori 50SB muffler.DOUG

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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HelicopterMain Discussion › Long tuned pipes/mufflers?
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