Sport 40 Pipe Length.

[Samuel Hagan JR]

This is my first time messing with this combo. I just need a starting point.

CMB 8 Port VAC

CMB Nitro Pipe.

I'm not looking for screaming RPM's.

 

[Robert Pickard]

10 and a quarter

 

[anthony_marquart]

I run my AA at about 9.25. That was with the AA pipe. 10.25 sounds real long to me. 9.5 should better and real stable.

 

[FloridaScaleBoater]

I run my AA at about 9.25. That was with the AA pipe. 10.25 sounds real long to me. 9.5 should better and real stable

Really?? Seems that my AA and CMB-RS run pretty dang good at 10.25

 

[SayMikey]

Id put it at 11 1/2 and move it in slowly. That way My big apple round nose will lap you 2 times a heat

 

[Samuel Hagan JR]

Id put it at 11 1/2 and move it in slowly. That way My big apple round nose will lap you 2 times a heat

Haha. Miss you guys.

 

[Samuel Hagan JR]

I'm gonna start at 10 1/2" and see what it does.

 

[Robert Pickard]

My set up is a Phil Thomas with a CMB and a Andy Brown parabolic runs great at that length

 

[anthony_marquart]

heck,.. maybe Im running too short?

 

[Larry Roberts]

I run my CMB at 10 3/8

 

[anthony_marquart]

you guys running big props? what props you running with pipe over 10in on a sport 40 boat?

 

[Samuel Hagan JR]

Anthony, can you mill with your pipe that short.

X450/2

X452/2

 

[FloridaScaleBoater]

you guys running big props? what props you running with pipe over 10in on a sport 40 boat?

On my Phil Thomas CMB-45RS I run a Oct. X447/3

On the WOF AA45 powered boat running a X450/2

Boat mill all day long and SNAP to WOT at the start,,, Then STROLLLLLL

 

[anthony_marquart]

Well,.. maybe I'm running mine like I did the .21 riggers.. It would slow down,, off the pipe,.. It would take a bit to wind up after that.. maybe 50 ft back to full song... But it was cookin.. not immediately on and off the pipe though.. I would have to be nail it a bit out of the last turn to hit full speed at the start line.. .. So far it's just me though.. no one crowding i at the start line..

 

[anthony_marquart]

are you guys restricting water flow in on your sp40 boats?

 

[Samuel Hagan JR]

I'm using medium size water line in my Sport 40. Not sure what the CMB is gonna due though.

With the MAC 45 i ran the pipe at 10 5/8" with the parabolic. Heat racing didn't like the shorter pipe. Prop was a 648/2. What line no restrictions.

I'm gonna test my Sport 40 in April with the new VAC andCMB Nitro Pipe.

 

[Samuel Hagan JR]

Here's my new setup. Thanks to my fiancee for the awesome Christmas present.

 

[anthony_marquart]

Very nice gift

 

[bsmtboy2]

That's a small prop for a sport 40, step up to a x448,x450 2 blade run the pipe at 9 3/4 to start and lengthen until desired speed is achieved. Like Anthony said reduce water flow head temp should be about 140-160 when returned to shore after 6 laps WOT.

 

[Ray Sametz]

That's a small prop for a sport 40, step up to a x448,x450 2 blade run the pipe at 9 3/4 to start and lengthen until desired speed is achieved. Like Anthony said reduce water flow head temp should be about 140-160 when returned to shore after 6 laps WOT.

Sorry Charles can't help myself being a retired carpenter. Cut it twice and it was still to short.