cmb 21 valv direct ..

[Tofastformellow]

Gday ,

i would think there would be a few of these motors around now....

what pipes are you guys running on the green headed valvola direct , ???

ive broken mine in with a LS21 pipe , and am ready to try something else .

ive got some SPP' pipes here to try , mp21, td21, also macs 21 , etc etc,

whats running good on raced or sport setups ??

is that AB fat 21 pipe the way to go ??( if so , can you actually still buy one ??)

Thanks

Jason

 

[Richard Dahlheimer]

Gday ,

i would think there would be a few of these motors around now....

what pipes are you guys running on the green headed valvola direct , ???

ive broken mine in with a LS21 pipe , and am ready to try something else .

ive got some SPP' pipes here to try , mp21, td21, also macs 21 , etc etc,

whats running good on raced or sport setups ??

is that AB fat 21 pipe the way to go ??( if so , can you actually still buy one ??)

Thanks

Jason

Jason, i am running a AB S pipe on my MAC .21. The CMB green head Valvola and the MAC are the same. Mine is set at 7and 7/8ths, hull is a Black Jack hydo. 60-68% nitro. Check with CMDI, to see what pipes are in stock Richard D

 

[dave roach]

Pipe

ops 3280 at 8 inchs sport 20 boat

Dave Roach

 

[Bob Finn]

Original CMDI nitro pipe with a muffler added at 8"

 

[Don Ferrette]

is that AB fat 21 pipe the way to go ??( if so , can you actually still buy one ??)

The 21 "fat" pipe from CMD was my best pipe on the MAC21 in both torque & top speed. As previously mentioned you can use info from pipes people have used on the MAC as they are the same motor.

 

[Tofastformellow]

any other good pipes to try ?

Jason

 

[shoboat]

Jason,

MS-21 @7 3/8" it is WICKED!!! If it doesn't work for you send them to me.

Good Luck Testing,

Mark Sholund

 

[RIGGERMORTISE]

Jason,

MS-21 @7 3/8" it is WICKED!!! If it doesn't work for you send them to me.

Good Luck Testing,

Mark Sholund

wont be long!! production is starting again soon!! B)

 

[Tim_Duggan]

Jason,

MS-21 @7 3/8" it is WICKED!!! If it doesn't work for you send them to me.

Good Luck Testing,

Mark Sholund

Just make sure you prop appropriately - right Mark?

 

[shoboat]

Tim,

You are so correct about that statement. Dave made me one for my Valvola 21 and it

just cranks out RPM (34,194 RPM) to be exact. I have a New "Sholund Special" Propeller

that is profiled to the maximum, and it spins up real well with my set up. I know you guys

tried the shorter version,but have Dave make you a longer one. The stinger diameter is

critical,but once you get it right 82 MPH is possible for a heat race set up. I think the S.A.W.

set up will be UNREAL. I will be sending a few samples to Dave soon. Believe it

or not, 3.46" to 3.60" of cup is all you will ever need with this set up.

Have A Good Season,

Mark Sholund

 

[Tofastformellow]

thanks for laying it out mark ...

Jason

 

[troytron1]

Who makes the MS-21 pipe and where can I get one?

 

[shoboat]

Troy,

Dave at S.P.P. pipes in Australia makes them, and I sell some for him over here in the States.

Dave has been very busy lately and has not been making many pipes. Him and I developed

this pipe through our exchange program. When they are available I'm sure I will get some

in stock to sell.

Thanks For Asking,

Mark Sholund