I had thought about doing this back when I first experimented with the thumbscrew idea. The idea behind this is to increase back-pressure in my drag pipes without losing sound, yet deepening the tone a bit or should I say dampening. Yes, it's based on the lollipop design ... however it is also based on another design that is patented and produced by a company selling them for $80! You know me ... screw that.
Yesterday I went to a local muffler shop and asked the guy if he could cut me some 1-3/4" pipe and flare the ends out to a maximum of 1-7/8". The dimensions are based on my Cobra Drags being 2" OD and 1-7/8" ID. After some small talk and shootin' the sh/t he said no problem. Apparently I got on the guy's good side and he didn't charge me anything. Awesome!
Then I headed over to ACE Hardware and after some isle-engineering, I decided on a large ring connector, nut and bolt for the final design aimed at having a no-weld assembly. D^mn I need a welder!
So I got home, modified the ring connector by cutting off half of the crimping end, slipped it through a threaded bolt and drilled a hole in one of the ends of each pipe for the connecting bolt to slip through. Using just a dab of axle grease, I slipped each assembly into the pipes, bolted through the lollipop using Cobra's location for their baffles, and viola!
I started the bike and immediately noticed a deeper, somewhat dampened sound. My son noticed and said it was quieter than the open pipe sound before, but still loud and deeper in tone. The kicker is my wife was inside and came out and said the same thing without being asked. Cool!
So I took her for a spin ... the bike, not the wife ... that was later.
My seat-o'duh-pants dynometer tells me the torque increased substantially - that is due to the taper design of the 'baffle'. And the sound immediately opens up on throttle, and the idle sounds nice, deep and clean - this due to the lollipop combo.
The thumbscrew idea I originally had prior to rejetting really did nothing by comparison.
All this for a total of $5.30 ... A bit different from $80 plus shipping, eh?
Anyway, this is what I ended up with. I'll hit it with some high temp paint (BBQ paint probably) and try to capture some sound later:
Based on this: