flow rate

[KenOlvis]

Never used a flow meter yet now that I have one looking for some tips thxs

What is a good start point on

.12 novarossi

.18 os

CMB 45

CMB 65

They have been modify I havent ran them yet.

 

[Elias Vazquez]

Hey Ken,

To many variables, just to mention one example, different fuels and oil %'s can cause a ten or greater number swing. Here's my suggestion, start off rich and slowly and progressively begin to close your needle till you've reached your optimal needle setting, flow it and write that number down. Next time you run you could start at that number which should put you close but not necessarily on the money. From time to time you'll still have to do some tweaking. Nifty device but It's not an end all, tell all unit.

Have fun,

Elias

 

[Ray Sametz]

Boris has a sheet of numbers he got from racers. I'll find it and scan, will post.

 

[Ray Sametz]

Like Elias said lot of variables, but here's the list for what it's worth.

 

[Robert Pickard]

Ray the top readings are from Gen I and 2 ?

 

[Ray Sametz]

Ray the top readings are from Gen I and 2 ?

Robert, yes, the flow meter you have are very close too the 45 and 67 readings I used. Have not run a 21 in years.

 

[moparbarn]

Robert, my gen 1 reads 100 on my CMB .21's & 88 on my k&b ob sport 21. Kinda weird to me, ALL my CMB LS evo2 21's read 100 - rigger, mono & ob!

 

[KenOlvis]

Hey Ken,

To many variables, just to mention one example, different fuels and oil %'s can cause a ten or greater number swing. Here's my suggestion, start off rich and slowly and progressively begin to close your needle till you've reached your optimal needle setting, flow it and write that number down. Next time you run you could start at that number which should put you close but not necessarily on the money. From time to time you'll still have to do some tweaking. Nifty device but It's not an end all, tell all unit.

Have fun,

Elias

Hey Ken,

To many variables, just to mention one example, different fuels and oil %'s can cause a ten or greater number swing. Here's my suggestion, start off rich and slowly and progressively begin to close your needle till you've reached your optimal needle setting, flow it and write that number down. Next time you run you could start at that number which should put you close but not necessarily on the money. From time to time you'll still have to do some tweaking. Nifty device but It's not an end all, tell all unit.

Have fun,

Elias

80's i used a small syringe with out needle put fuel in it release the fuel an use a stop watch to time to see how long it took to empty.this device will make it cleaner an easier

 

[Robert Pickard]

I have to figure numbers for nova rossi 21 that will get me close

 

[moparbarn]

Robert, it doesn't work that way. Start old school, tune it by ear - starting rich. keep making test runs, tweaking it leaner until you find the sweet spot. THEN flow it, that is the number for YOUR boat. Set it at that number every time, & it will be VERY close (if not dead on) no matter where you are running. Change anything in the setup, repeat the process. The meter is not for the starting point, it's for the final destination. Forget trying to use other's numbers, waaay too many variables involved. I've used different Boris meters back to back on the same boat, same day, same everything. No two meters will read the same, just like no two boats will run the same with the same setup (prop, strut, pipe length). Even changing the hose from the meter to the engine will change the reading. Using other's numbers can have you chasing your tail at the pond, need to do the footwork yourself. Go burn some fuel, get it dialed in, THEN use the meter!

 

[Robert Pickard]

Trying to get everything i need so when i do get the boat wont take long to set up

 

[shoboat]

Robert,

We have had quite a bit of success with a Octura X-442 with a Lynx-Cut in it.

Approx. 3.46" cup seems to run very well on the Nova Rossi Keep 21 OB.

We reduce the diameter to 38 mm and it spins up Very Well.

Enjoy The New Tunnel,

Mark Sholund

 

[Robert Pickard]

I be getting with you Mark once i get everything done

 

[bmazor]

Robert, it doesn't work that way. Start old school, tune it by ear - starting rich. keep making test runs, tweaking it leaner until you find the sweet spot. THEN flow it, that is the number for YOUR boat. Set it at that number every time, & it will be VERY close (if not dead on) no matter where you are running. Change anything in the setup, repeat the process. The meter is not for the starting point, it's for the final destination. Forget trying to use other's numbers, waaay too many variables involved. I've used different Boris meters back to back on the same boat, same day, same everything. No two meters will read the same, just like no two boats will run the same with the same setup (prop, strut, pipe length). Even changing the hose from the meter to the engine will change the reading. Using other's numbers can have you chasing your tail at the pond, need to do the footwork yourself. Go burn some fuel, get it dialed in, THEN use the meter!

You are right 100%. The flow meter will keep on the top! Is not meter which number you got, your setup is only meter! Boris

 

[Samuel Hagan JR]

Ken the MAC 45 likes the 80 to 90 range to start. We have all of our setup around there.

That's using a OS 9B in flight needle.

 

[KenOlvis]

Ken the MAC 45 likes the 80 to 90 range to start. We have all of our setup around there.

That's using a OS 9B in flight needle.

Thank youThats what we be a starting point ill start with the fatter number.

 

[Samuel Hagan JR]

Ken the MAC 45 likes the 80 to 90 range to start. We have all of our setup around there.

That's using a OS 9B in flight needle.

Thank youThats what we be a starting point ill start with the fatter number.

No problem. We had 2 MAC motors in 2 different boats with the same needle and both ran different numbers but where relatively close to that range.