Twin Pipes

[Tim Kish]

I had a brief discussion with an experienced twin racer about pipes but I am curious as to what pipes people are you using on their twins and what pipes have you tried?

I am running CMB 80's with Cooper pipes but have only ran the boat a couple of times so it is very difficult to determine if the performance will be were I expect it to be.

I am always willing to try something else and looking for options.

Tim K

 

[Russell Bear]

I have the same setup as you, Roadrunner with CMB 80's. I may start playing around with other pipes on mine, but when I was building it I was told by several peoples that the 13cc (1385) MAC's pipes at 12" with add-on mufflers was the way to go.

 

[Stuart Barr]

I have tried a few other pipes, but always came back to the 67/80 Fat Pipe (CMB) with Cooper Mufflers. Great torque and rpm with this combination.

 

[XtremeRcBoats]

I have tried a few other pipes, but always came back to the 67/80 Fat Pipe (CMB) with Cooper Mufflers. Great torque and rpm with this combination.

Good question, i'm also in need for some pipe info. I've got a twin sqx with mac84's and only need pipes to start building. What's a good pipe for this combo?

Thanks,

 

[Tim Kish]

Pretty much what I was expecting , I just wish I could afford to try them all.

Thanks guys

Tim K

 

[PHM Racing]

Tim i have 2 CMB Fat pipe's , there not for sale but your more than welcome to try them and see if the work for you before you put any monet out.

Let me no

 

[Tofastformellow]

twin mac 84's,Macoy 9's , oct 1667's . macs fat belly 15cc pipes at 11 1/2 " on 50%, drives itself back to shore after

Jason

 

[aaron alberico]

twin hr91 mods, sgx-2 hull, new billet ab-67-80 pipes at 10-1/2in

abc mod 2618's

NOW, THAT IS FAST,

 

[PHM Racing]

twin hr91 mods, sgx-2 hull, new billet ab-67-80 pipes at 10-1/2inabc mod 2618's

NOW, THAT IS FAST,

How fast is it

 

[Anders_Martinelle]

95MPH behind the garage .

I have heard rumours about it that it screems.

How fast on the gun????

Anders

 

[aaron alberico]

Anders

spot on, i will let people that have seen it tell all. lol

and it is only going to get better and faster with some testing

regards Aaron

 

[shoboat]

Fellas,

2618's with some good RPM = fast 90+ MPH

Good Job Aaron,

Mark Sholund

 

[Ian Inverarity]

Andersspot on, i will let people that have seen it tell all. lol

and it is only going to get better and faster with some testing

regards Aaron

I have seen it. B) Over 90mph with lots of revs!

 

[Tofastformellow]

on 2618's whats its fastest heat time so far ?

gee 90+ mph heat races .. thats B____y fast ..

Jaso

 

[Buckshot]

I had a brief discussion with an experienced twin racer about pipes but I am curious as to what pipes people are you using on their twins and what pipes have you tried?
I am running CMB 80's with Cooper pipes but have only ran the boat a couple of times so it is very difficult to determine if the performance will be were I expect it to be.

I am always willing to try something else and looking for options.

Tim K

In my twin with CMB 80 Rs motors I have been running the black AB 67 pipes.

It has made runs in the 90mph range with good rev's.

I beleive that Stu Barr has CMB's version of this pipe in stock.

-Buck-

 

[FloridaScaleBoater]

For Buck & the rest of you that might like the info.

CMB 67/80 Muffled pipe, Replacement for AB Muffled pipe Options Track this topic

Post #1

For those of you having trouble finding the famous and great working AB 67 muffled pipe,

I just picked up one of CMB's 67/80 muffled pipes from Stu Barr, it is identicle to the AB 67 Black muffled pipe that CMDi used to have produced, and carried.

They are pricey, but are the same as what alot of us scale boaters like to use

Just an FYI

Rick