YS venturis
 

Hi,

What are the venturis for that the Japs are using on their 160's? A friend of mine said it makes them more fuel efficient plus you get more power.

Also, they seem to come in 3 different internal diameters, 8, 9 and 10mm. Anybody know what one they are using? I was told the 9mm one suits the 160 best.

Cheers,
Angus

RE: YS venturis
 

And what about the 140DZ, is it 9mm or which one is the best? I heard 8mm would be great.. I'd like to get the fuel consumption down a bit and more power doesn't hurt.

Where can I find one of these?

RE: YS venturis
 

Are you talking about the funnel that are available at hobbynet-jp.com?
They are available 8, 8.5, 9, 10 mm.
I remember seeing a different one (much taller than these) somewhere in Japanese website, but I can not remember where. I think they posted 100 rpm gain.
Here are some pictures.

RE: YS venturis
 

Those look an awful lot the velocity stacks I used to use when I was into drag racing.

They smooth out the airflow into the carb and speaking from experience on automotive engines they work.

RE: YS venturis
 

I'll make a drawing for some of these if someone will make me a couple. :D

RE: YS venturis
 

Mom....can I have a cnc lathe?....I only want a small one.

RE: YS venturis
 

You can find this in this website : https://www2.hobbynet-jp.com/japan/m...ory2_ID=item04

Fred

RE: YS venturis
 

I asked the dealer about the venturis and he told me it should not be used to increase power but to improve thrust curve in the mid range. I have always liked the response of my 140DZ but if it can get better why not. I have allways liked shiny polished aluminum parts especially small ones which are ment to do great things :D

140dz: 9mm or 10mm
160dz: 8mm 8,5mm or 9mm

He told me the two engines have different type of 'needs' and that is why the sizes differ.

RE: YS venturis
 

Interesting. Might get one myself just to try out :)

Angus