Dual Cooling

9

93SJ760

X-H
Location
Timmins, Ontario
Just want to make sure I'm getting this right.

The way I understand it is I use that large boss that's filled in on my pump (93 Square Nose) and drill and tap to fit a brass 90 degree fitting. Then I run my hose to the old syphon line for dual cooling. Right?
Anyone know if those fittings are pipe thread???

What are people using to run a trim cable through? I've been looking for small ID aluminum tubing but can't find it anywhere.

Thanks,
Tyler
 
9

93SJ760

X-H
Location
Timmins, Ontario
Sorry... Just found this info in the tech section. Although I'd still be interested in what people are using for their trim cable and wether or not those fittings are pipe thread. If they are I'll have to go find a new tap set.
 
9

93SJ760

X-H
Location
Timmins, Ontario
The fitting I'm wondering about is the 90 degree barbed fitting that I'll be threading into the pump unless there's something better to use other than the barbed brass fitting.
 
S

sflsurfrider

yes, a 1/8" npt (pipe thread) is what is typically used coming out of the pump.

do yourself a favor and buy the recommended drill bit size for that tap.
 
2

2nd nature

Location
atlanta ga
we just ran 1/2 inch cpvc.for the trim cable .you want have a problem running it through. you can cap it off untill your ready.were using 5200 to keep water out after its installed.
 
9

93SJ760

X-H
Location
Timmins, Ontario
NPT Thread

Thanks SFLsurfrider!

Michael,

I believe 3/8" NPT is all you need to know. NPT will be your thread size. There is no fine or coarse it's "National Pipe Thread" I believe, and they are tapered in a way that the farther you thread the fitting in, the tighter it gets. I just don't have any NPT taps and will probably have to visit a plumbing supply shop or industrial supply store to find them.

CPVC? Is that the grey pipe? At 1/2" you must run the conduit right through and to the back of the machine? What do you use for a bracket as a stop for the conduit? I was thinking of stopping it at the bulkhead and just running the cable through the hull which would only require a 1/2 tube or something like that. This method would just require me to make sure the tube is aiming directly at the trim lever on the nozzle.

As you can tell, I'm just trying to put together a homemade trim system for myself.

Tyler
 
michael950

michael950

for me to POOP on!
Location
Houston, TX
Thanks,

I bought a craftsman 1/8-27 (Pitch is .27 NPT & .28 BSP), and tapped the manifold last night. I think you use a 5/16" drill bit.

PAGE 3 of McMASTER CATALOG:
While NPT threads are common in the United States, BSP threads are widely used in many other countries.
There are two types of BSP threads: BSPT (British Standard Pipe Taper) and BSPP (British Standard Pipe Parallel). Both styles have the same thread angle, shape, and pitch (threads per inch), however, BSPT threads are tapered and BSPP threads are straight (parallel).
NPT and BSP threads are not compatible due to the differences in their threads. NPT threads are set at a 60° angle and have flattened peaks and valleys; BSP threads are set at a 55° angle and have rounded peaks and valleys.
Most NPT and BSP threads also have different pitches (threads per inch), which are listed below. To determine pitch, either count the number of threads that fall into a 1" span or use a thread gauge for a precise measurement.
 
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