Low tech tool
Posted: Fri Dec 28, 2007 8:49 am
Hey guys
Just a thought.
Should you want to check your carburetor balance and have no special tool, then try the "hose balancer'. You will need a length of vacuum hose that will fit comfortably inside you right ear hole or left for that matter. I have used an 1/8th vacuum line about 24 inches long.
With the carburetor feed plenum off and propped up, you can rest the hose at a selected point holding it in place about 1" protruding over the inlet throat into the air stream at a 90 degrees position with a forefinger.
The roar of air will have a certain tone to it, try to remember the tone heard in the hose, then switch the hose to the other carburetor holding it in exactly the same position and location. Listen to that roar tone and compare and repeat, memorizing it. Again continue the switch several times to compare. It takes a bit of practice but within a few sessions you should be able to judge which carburetor is leading and then adjust it to "roar" the same.
Now this might sound (excuse the pun) a bit ancient or "hoaky" but it was the method to tune multi carburetors when I was a student. Multi carburetors is the word. I worked with an Italian Master Mech at one stage in my apprenticeship who could make a V12 Jag purr on four Strombergs with his hose tuner. "Buenisimo Multi Cylindri
Have a go!
Dennis
Just a thought.
Should you want to check your carburetor balance and have no special tool, then try the "hose balancer'. You will need a length of vacuum hose that will fit comfortably inside you right ear hole or left for that matter. I have used an 1/8th vacuum line about 24 inches long.
With the carburetor feed plenum off and propped up, you can rest the hose at a selected point holding it in place about 1" protruding over the inlet throat into the air stream at a 90 degrees position with a forefinger.
The roar of air will have a certain tone to it, try to remember the tone heard in the hose, then switch the hose to the other carburetor holding it in exactly the same position and location. Listen to that roar tone and compare and repeat, memorizing it. Again continue the switch several times to compare. It takes a bit of practice but within a few sessions you should be able to judge which carburetor is leading and then adjust it to "roar" the same.
Now this might sound (excuse the pun) a bit ancient or "hoaky" but it was the method to tune multi carburetors when I was a student. Multi carburetors is the word. I worked with an Italian Master Mech at one stage in my apprenticeship who could make a V12 Jag purr on four Strombergs with his hose tuner. "Buenisimo Multi Cylindri
Have a go!
Dennis