90 rigger

[Ray Sametz]

Never ran a CMB 90 G/H, need starting pipe lenght for 90 Irwin Q/P with ABC 67x114 prop pitched up???? B) B)

 

[BigChuck]

Ray

if the volumes and cones, and I.d's are close to the 15cc MAC I would start @ 11 1/2.

 

[Buckshot]

Never ran a CMB 90 G/H, need starting pipe lenght for 90 Irwin Q/P with ABC 67x114 prop pitched up???? B) B)

Hey brother Ray,

I have one of those gold head Evo's and it is super powerful. I haven't tried an Irwin pipe but would guess it should run in the 11.25 - 11.75 range.

Have fun

-Buck-

 

[Ray Sametz]

Ray
if the volumes and cones, and I.d's are close to the 15cc MAC I would start @ 11 1/2.

Chuck, I was reminded that the divergent cone is a severe angle, will have to go 12-1/2 maybe longer. Thanks for the cone tip, and my mentor also for the PM. B) B)