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Rotating needle valve
Page 1 of 1
Rotating needle valve
John Goddard Tue Feb 28, 2012 3:32 am
In my quest for MORE power for the Old Timer I've now put a new td top end on it.
I'm going to take a little more time running this one in (at least 4 tanks Ha) but
the NV appears to be seeking a career of it's own so even if I wanted to lean it down
the blinking thing keeps rotating anti clockwise.
!, I'm counting my blessings it ain't going the other way.
2. What's the best way to make it stay put?
'Power M M Mad I tell ya' Johnnie
I'm going to take a little more time running this one in (at least 4 tanks Ha) but
the NV appears to be seeking a career of it's own so even if I wanted to lean it down
the blinking thing keeps rotating anti clockwise.
!, I'm counting my blessings it ain't going the other way.
2. What's the best way to make it stay put?
'Power M M Mad I tell ya' Johnnie
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 60
Location : Leyton North East London
Re: Rotating needle valve
Cribbs74 Tue Feb 28, 2012 7:21 am
Balance the prop!
Just kidding, either the spring is worn or the NV itself. That would be my guess
Just kidding, either the spring is worn or the NV itself. That would be my guess
Cribbs74- Moderator
Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Rotating needle valve
RknRusty Tue Feb 28, 2012 7:26 am
I always remove the spring and replace it with a washer and a short piece of silicon fuel tube, It keeps the needle from moving and it seals the inevitable air leak around the threads.
I use a thicker tube now. It lasts longer and seals better. Here it is in the background
Here it is with the needle closed
I wouldn't even run an engine with the spring. This is the only way to go. It will run much better without air trickling past the threads
I use a thicker tube now. It lasts longer and seals better. Here it is in the background
Here it is with the needle closed
I wouldn't even run an engine with the spring. This is the only way to go. It will run much better without air trickling past the threads
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Rotating needle valve
mitchg95 Tue Feb 28, 2012 9:03 am
John Goddard wrote:In my quest for MORE power for the Old Timer I've now put a new td top end on it.
I'm going to take a little more time running this one in (at least 4 tanks Ha) but
the NV appears to be seeking a career of it's own so even if I wanted to lean it down
the blinking thing keeps rotating anti clockwise.
!, I'm counting my blessings it ain't going the other way.
2. What's the best way to make it stay put?
'Power M M Mad I tell ya' Johnnie
yeah get rid of the spring for the needle valve, and replace it with a #4 washer and medium size fuel line as rknrusty suggested
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: Rotating needle valve
John Goddard Tue Feb 28, 2012 9:04 am
Great advice as always gents.
I'll balance prop just in case (engine's had less than 10 tanks so not old) and I'll Rustyise the needle
then report back.
Best
J
I'll balance prop just in case (engine's had less than 10 tanks so not old) and I'll Rustyise the needle
then report back.
Best
J
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 60
Location : Leyton North East London
Re: Rotating needle valve
mitchg95 Tue Feb 28, 2012 9:06 am
John Goddard wrote:Great advice as always gents.
I'll balance prop just in case (engine's had less than 10 tanks so not old) and I'll Rustyise the needle
then report back.
Best
J
i have done the needle valve+medium fuel line with good results, good luck
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: Rotating needle valve
RknRusty Tue Feb 28, 2012 9:34 am
I have read that you should always run-in the engine with the prop and fuel you intend to primarily use in the field. I've found my engines don't like changing fuel.John Goddard wrote:Great advice as always gents.
I'll balance prop just in case (engine's had less than 10 tanks so not old) and I'll Rustyise the needle
then report back.
Best
J
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
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