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Engine basics => Engine set up tips => Topic started by: charles west on May 31, 2008, 01:33:57 PM

Title: la 46
Post by: charles west on May 31, 2008, 01:33:57 PM

I want to install the needle valve on the venturie,what do I need to do? Thanx ,Charlie

Title: Re: la 46
Post by: RandySmith on May 31, 2008, 01:54:00 PM

Quote from: charles west on May 31, 2008, 01:33:57 PM

I want to install the needle valve on the venturie,what do I need to do? Thanx ,Charlie

hi Charlie

You will need to make a venturie that is a bit thicker, mill the sides flat above the case and drill for a NVA that fits the span.  This is the way Super Tiger does the ones on the ST 51 and ST 34. I do not care for it at all, especially on a built up ship.
Or you can turn down a  ST 34 venturie to fit into teh OS

Randy

Title: Re: la 46
Post by: don Burke on May 31, 2008, 03:06:06 PM

If it is an LAS all you need is a needle assy.  The OS one works.

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCR49&P=ML.

If you want to use a Super Tiger type needle you'll have to drill the hole out as the OS stock diameter is .136, ST being 4mm (approx. .155).  This will also take some cross-section away from the OS venturi.

If it is an R/C conversion you will also need a venturi, Tower has those also.  Or if you need a smaller diameter than OS supplies you'll need to sleeve it down, make one, or get one from one of the specialty suppliers.