Sport40 prop

[anthony_marquart]

Looking for prop recommendations for my sp40 boat. I have x448 and 450 two blades.

 

[FloridaScaleBoater]

Looking for prop recommendations for my sp40 boat. I have x448 and 450 two blades.

What you stated above + X447/3 If it will trow it a X450/3 I ended up with an X450/2 on the sport I'm running with the AA45

Just something I experienced,,,, My boat/hull engine combo DID NOT like the AA45/parabolic pipe.

 

[anthony_marquart]

What where the symptoms that told you it did not like the AA pipe. Mine did not really come on pipe strong. It did not have a distinct "hit the pipe" sound. You ended up with the Mac pipe didn't you?

 

[Bert Dygert]

Anthony,

You may want to try a Octura X646 three blade. I know the Mac45 and the CMB45 HR motors run very well with that prop.

Bert

 

[FloridaScaleBoater]

What where the symptoms that told you it did not like the AA pipe. Mine did not really come on pipe strong. It did not have a distinct "hit the pipe" sound. You ended up with the Mac pipe didn't you?

When the boat hit the water, I usually run a couple of hot laps, then slow down to set myself up on the clock... once I slowed down the engine would not come up once I hit the throttle again, very annoying to my style of driving.

Once I put the Mac's 7.5 pipe on it, it had throttleability that I was looking for

 

[bsmtboy2]

You may have been running that pipe too long, the AB parabolic really wakes up a motor with short pipe length. I run mine at 8 5/8 and she runs good with a x450/2 blade with Barr cut and a little pitch. Contact mark sholund here he has the prop for your setup that will get you to the podium.

 

[Robert Pickard]

I am running a 450/3 with a CMB Gold Head with AB parabolic pipe, all depends on set up

 

[Steve P]

Anthony,

You may want to try a Octura X646 three blade. I know the Mac45 and the CMB45 HR motors run very well with that prop.

Bert

+1

 

[FloridaScaleBoater]

Robert,

Your AB parabolic has the internal stinger drilled out to relieve back pressure & heat.

 

[glenng]

Start with the X448 and go from there. The X646/3, X450/3 and P230's might work on SOME boats. I never got along with the parabolic pipes and ended up using a Mac's 10 CC AERO pipe. W I D E powerband.

 

[Duck899]

Start with the X448 and go from there. The X646/3, X450/3 and P230's might work on SOME boats. I never got along with the parabolic pipes and ended up using a Mac's 10 CC AERO pipe. W I D E powerband.

THIS ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 

[anthony_marquart]

Is the is the macs pipe you are talking about?

http://www.ebay.com/itm/NEW-Macs-Quiet-Tuned-Pipe-10cc-60-75-1060-NIB-/331328816873?pt=Radio_Control_Parts_Accessories&hash=item4d24bc86e9

 

[Duck899]

Its the macs #1160 aero pipe, you need to add a clamp on style muffler.

 

[FloridaScaleBoater]

Is the is the macs pipe you are talking about?

http://www.ebay.com/itm/NEW-Macs-Quiet-Tuned-Pipe-10cc-60-75-1060-NIB-/331328816873?pt=Radio_Control_Parts_Accessories&hash=item4d24bc86e9

Not the one I'm talking about or using.

Here's the webpage and numbers I reccommend http://www.macspro.com/marinetunedpipes.asp

1345 tuned pipe 1349 quiet pipe YOU DO NOT WANT THE 1342

 

[anthony_marquart]

Man those pipes are expensive.. Looking forward to getting back home and doing some more testing,..

 

[anthony_marquart]

just bought a 1345 brand new on ebay for $25,..

 

[Duck899]

Great score!!!

 

[FloridaScaleBoater]

just bought a 1345 brand new on ebay for $25,..

It was You???? I knew I should have purchased it when I saw it this afternoon!!!! That was a steal.. let me know how it works out for you

 

[Tom Levescy]

my son's phil thomas we run a cmb purple head gen 1 with a ops 3280 style pipe and a stinger muffler. Its pulling a x452 that has been cupped and back cut and it screamed for more prop but it still was one of the fastest in the district for years. Now he's working on a whiplash that rtr minus fuel weights 6lb 5oz. So we are thinking it may want even more prop since the phil thomas weighed right about 6lb just hull and hardware.

 

[anthony_marquart]

As we talk about props it seems like we go with the just step up diameter with the same pitch. 450 - 452. Etc. should we not be looking for a diameter sets the ride height and then look to increase pitch?