R1200R Frankenstein Muffler Surgery part 3: Supertrapp

[plumber]

I finally installed a Supertrapp on my R1200R. I installed a Supertrapp Polished S-C Elite 2 1 - 4 in. Inlet - 4 in. Outlet - Stainless Steel , Part#: 446-2224. I bought it from Summit Racing. Center stand is retained.

The build:

I cut the can off my muffler, in the front cone section.

I noticed the inlet pipe has 3 layers welded together: the pipe, the tapered/cone part of the can, and a perforated pipe.

I then cut the cone away, leaving the perf-pipe, inlet pipe, and weld.

I SLOWLY ground the weld until I could separate the perf-pipe from the weld.

I SLOWLY ground the rest of the weld, leaving just the inlet pipe with center stand pad/bracket. Imagine you're grinding an egg shell and try not to break the membrane inside. Take your time.

I polished the inlet pipe with ScotchBrite, hiding stray grinding marks at the same time. It will eventually turn color.

The inlet pipe O.D. is 2.25", a snug fit in the Supertrapp. I had to persuade the inlet pipe with a rubber mallet until it was far enough inside the Supertrapp to prevent exhaust leakage.

I hung the Supertrapp with the included clamp. It mates nicely with the original muffler hanger, no special hardware needed. I had to rotate the muffler until the logo lined up, and the seam is at the bottom. I used a rubber strap wrench to do this.

The sound? It nowsounds like a motorcycle instead of a Norelco. The muffler came with 8 or 10 discs. I bought 6 extra. I like the sound of the open pipe, no end cap, but the neighbors may disagree. Right now I'm running 8 discs with the end cap.

Performance? I noticed no change, but I've only ridden about 50 miles, and I ride like an old fart.

Weight savings approx. 4 lbs.

A mosaic photo is at http://i846.photobucket.com/albums/ab28 ... rtrapp.jpg.

[celticus]

That looks like an excellent craftsman like job you did there.
I hope it sounds real good after all of the work you put into it. I would not, could not go through all that to put any can on my bike. I haven't the tools or skills so it doesn't look to be for everybody.
I might change my exhaust to save a signifigant amount of weight but not to change the amount of noise. I like it quiet. I listen to audio books while I ride distances.
I'm not sure about the question in your poll.
Do I like the Super Trap? Yes
Do I have the stock can? Yes
Norelco makes a fine product.

Mark

[plumber]

I don't listen to tunes, radio, audio books while riding. I listen to the motorcycle, the wind.

[celticus]

Far Out.

Mark

[mogu83]

I like to ride with my head in the wind, an open face helmet with no ear plugs and the loudest set of pipes I can get on the bike - that way I can't hear 'The Voices'.

[celticus]

If I don't have music or an audio book on I get constant badgering from The Baron Harkonnen in my head. Drives me nuts.

Mark

[Acpantera]

Just an idea...Friends of mine have commented on the beautiful single swing arm and wheel on my roadster, but too bad that its covered up by the muffler. My thought was to have a shorter muffler, as in saw it off just past the hanger. Maybe i'll look for a used one and do a little surgery my self.

[Mollygrubber]

Nice work, I'd love to hear that thing running! (but not in my neighbour's driveway at 5:00am...)

I think the stock can sounds like a wet fart. When I have some spare $$$ ( ) I'd love to replace it, too.

Peter

[Mollygrubber]

Just an idea...Friends of mine have commented on the beautiful single swing arm and wheel on my roadster, but too bad that its covered up by the muffler.

Precisely what I think, it seems a shame to hide that lovely wheel behing a big ugly muffler. I've seen an afternarker muffler that is quite petite, and mounts high up such that the wheel is 'on display'. Might be the Remus hexacone?? Can't remember at the mo'.

Peter

[celticus]

Many of the new Japanese sport bikes have a very small muffler. Little bitty tri angular things. I'll bet that a clever guy like Plumber could mount one of those in such a way that would look super sanitary.

Mark

[Acpantera]

See the muffler on the new Ducati multi-strada 1200, leaves the wheel wide open to view.

[mogu83]

Just an idea...Friends of mine have commented on the beautiful single swing arm and wheel on my roadster, but too bad that its covered up by the muffler. My thought was to have a shorter muffler, as in saw it off just past the hanger. Maybe i'll look for a used one and do a little surgery my self.

If you search the net you'll find pics of bikes that have the muffler completely off and a short chrome tailpipe type extension that brings the exhaust out behind the left foot peg.

I started mine up without a muffler and I doubt if it was loud enough to draw attention from the local law enforcement.

[Acpantera]

I'm not looking for loud or better sound, I just wish that one of the best features of this bike was a little more noticeable. It would even make it easier to R and R the wheel.

[plumber]

Supertrapp makes an assortment of 2 1/4" inlet universal SS mufflers. Mine is the 24 inch, a 17 inch would slide right in, and be a few lbs lighter besides.

Tim

[plumber]

I believe the catalytic converter muffles things quite a bit.

[celticus]

I have heard an R1150 with just the catalytic converter and it was a suprise to me how un loud it was.

Mark

[plumber]

I've showed one solution, with a low price and good results.

I'm done with this except for adjusting the number of discs, and do I toss the end cap. I like the sound without an end cap, and I like the look of a the discs mounted backwards and no end cap. Backwards discs hides some of the muffler internal edges better than regular mounting. I'm concerned about mixture, too little back pressure affecting performance, etc. One of the pricy aftermarket mufflers (Akropovic maybe) looks and sounds great, but you lose 5 hp!

I might scotchbrite the muffler.

The little mufflers seen these day may be just a part of the exhaust, with a monster can somewhere underneath.

If the pipe is loud, it is less fatiguing if the outlet is behind you.

[plumber]

I like to ride with my head in the wind, an open face helmet with no ear plugs and the loudest set of pipes I can get on the bike - that way I can't hear 'The Voices'.

Do your friends and family keep sharp objects and matches away from you?

[deilenberger]

I like to ride with my head in the wind, an open face helmet with no ear plugs and the loudest set of pipes I can get on the bike - that way I can't hear 'The Voices'.

Do your friends and family keep sharp objects and matches away from you?

Actually - his fellow local club members do also..

NTTAWWT.