RunRyder RC Helicopter Topic - Can a 91HZ non pump be used in a MPV91XL

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Henseleit 3DNT - Rocket - 3DMP > Can a 91HZ non pump be used in a MPV91XL

titillater
Heliman
Location: Duncan B.C

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My 91XL is on its way now and it has an SZ pumped motor fitted and from what I've been reading the SZ vibrates a bit more than HZ as well as the pump is not very reliable and harder to tune than the non pumped.So I was thinking of getting an OS91HZ non pumped but wasn't sure if the fuel tank is engineered for pressure.I also have a brand new YS91SR but don't know if that works either.All I could find on RR was stuff about 3DNTs.Geoff

10-27-2009 05:28 PM

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Fredoc
Heliman
Location: Metz - France

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Hi,

of course you can use a not pumped OS, I fly mine with a 91 SZ since 2006, so your 91 HZ will only be better.

Fred.
http://fredoc.blog4ever.com/blog/lesphotos-74164-1948327255.html

10-27-2009 06:19 PM

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titillater
Heliman
Location: Duncan B.C

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So will a YS91 work too?Or does it have the wrong kind of crankshaft

10-27-2009 08:27 PM

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hristo
Heliman
Location: netherlands

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an ys will work too , but you would need a different clutch for that , jan can swap you a proper one if you send in yourse .
i got a rz in there , with a hatori 938 , i was thinkin about a hz awell , but i decided to wait until they come up with a rear exhaust as you need a different exhaust for the new hz .
really hate the vibes in the sz/rz series

if you do what you did , you get what you've got

10-27-2009 10:12 PM

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titillater
Heliman
Location: Duncan B.C

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I read that you can use the crank and wrist pin from HZ to put in the SZ to get rid of that engine vibration.

10-28-2009 12:47 AM

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hristo
Heliman
Location: netherlands

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ok , you'r sayin that its the crank what gave this engine bad vibe rep ?

if you do what you did , you get what you've got

10-31-2009 04:57 PM

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Henseleit 3DNT - Rocket - 3DMP > Can a 91HZ non pump be used in a MPV91XL

titillater
Heliman
Location: Duncan B.C

My Posts This: Topic Forum

its a lighter piston and wristpin combined with a rebalanced crank that was supposed to make the HZ have less vibration.Apparantly all these parts are interchangable.

10-31-2009 05:36 PM

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Mikado Modellhubschrauber	.	Futaba-RC	.	Boca Bearings
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Henseleit 3DNT - Rocket - 3DMP > Can a 91HZ non pump be used in a MPV91XL

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