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Author Topic: Tuned Pipe weight  (Read 2170 times)

Offline FLOYD CARTER

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Tuned Pipe weight
« on: June 21, 2015, 04:04:23 PM »
I'm testing a Mac's tuned pipe on a RO-Jett 61.  Bench running looks promising, although I haven't decided on the exact tuning, glo plug to first baffle.

This pipe is aluminum and weighs 4 oz.  I'm now concerned about the weight, even though the weight will be pretty much centered on the CG.

I know there are pipes made of carbon fiber, and lighter.  I was attracted to the aluminum pipe for its guaranteed "long life".

Has anyone used aluminum tuned pipes?  Hard for me to tell because they are usually buried and out of sight.

Floyd
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Offline Jim Kraft

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Re: Tuned Pipe weight
« Reply #1 on: June 22, 2015, 10:48:43 AM »
I ran an Hatori aluminum pipe in R/C pattern for 8 years with good success. There is nothing to wear out or burn holes in and they seem to last forever. But, I am sure the carbon fiber pipes are a lot lighter. Maybe someone here will chime in with experience in control line with one.
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Jim Kraft

Online Igor Burger

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Re: Tuned Pipe weight
« Reply #2 on: June 22, 2015, 01:21:33 PM »
good alu pipe will weight less than 2 oz :- ))

« Last Edit: June 22, 2015, 03:00:20 PM by Igor Burger »
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Offline Tim Wescott

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Re: Tuned Pipe weight
« Reply #3 on: June 22, 2015, 03:14:34 PM »
Does a 12-pole motor need a shorter pipe than an 8-pole motor?
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Offline Steve Helmick

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Re: Tuned Pipe weight
« Reply #4 on: June 23, 2015, 02:48:24 PM »
Dirty Dan ran MACS aluminum tuned pipe on his .25FP...after he built a Wimpact that was too big for the .21FP. I'd give him a jingle and offer some produce in exchange for info.  y1 Steve
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Offline FLOYD CARTER

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Re: Tuned Pipe weight
« Reply #5 on: June 24, 2015, 10:33:33 AM »
I'm afraid I can't do business with Dan.  We tried to grow veggies here, but the deer somehow manage to get through our fencing and eat everything down to the roots.

Floyd
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Offline Steve Helmick

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Re: Tuned Pipe weight
« Reply #6 on: June 25, 2015, 04:25:23 PM »
Here's the Dirt (figuratively speaking). Dan used the #1020 pipe from the "Quiet Tuned Pipes" chart. If yours is from that chart, and is the correct size for your RO-Jett .61 (#1060) , I'd bet it'd work fine if you correctly locate the baffle.  D>K Steve

http://www.macspro.com/tunedpipes.asp
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"The United States has become a place where professional athletes and entertainers are mistaken for people of importance." - Robert Heinlein

In 1944 18-20 year old's stormed beaches, and parachuted behind enemy lines to almost certain death.  In 2015 18-20 year old's need safe zones so people don't hurt their feelings.

Offline FLOYD CARTER

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Re: Tuned Pipe weight
« Reply #7 on: June 25, 2015, 06:23:02 PM »
Yes, Steve.  The pipe is a Mac's # 1060.  I'll use the pipe length recommended on the chart.

Floyd
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