| Author | Message | ||
     Redscuell |
Dadams, repeating my earlier post -- you'll get nothing from changing the tips to larger pipes, unless you go right back through all (3?) walls into the final collector chamber with the larger pipes. | ||
| Geforce |
Red, we are removing the "S" section entirely and opening the outlets up. Still pretty experimental at this point. Scroll up and you can see one of the "S" sections in the 5th pic from the bottom laying out on the table. | ||
| D_adams |
Well, we'll see I suppose, but if you look at the cutaway pics, the 2.5" pipe has holes all over it. I'm sure that adds up to a small amount of displaced flow that essentially went nowhere prior to this mod. Worst case scenario, I have to drill a hole into the 3rd chamber for a little more flow. I won't do it until I know for sure what the first part of this mod does to the HP/torque curves. Little steps. The 3rd chamber can be drilled into with the pipe mounted on the bike, so I'm not worried about it. What I'm shooting for on the slash cut is flush with the side of the pipe, so no, it won't be hangin out there like a pair of weiners in the wind. Even if it were to be just square cut like they are pictured, they are NOT mounted to the correct depth. They will slide in considerably farther. I wanted to see how much material I had to work with, so I only stuck them in just far enough to clear the 2nd wall inside the pipe. | ||
| Boogman |
Dadams ... ive been following this thread for sometime now .. and gotta say your doing a great job ... im just about to embark on this exact thing .. much appreciate your pics and effort .. sensational .. Cheers | ||
| D_adams |
More pics, slash cut stuff. Now more options, stacked straight up as pictured, staggered with the top longer or with the bottom longer. Roll the slashcut down some? Leave it straight? Which should it be? I need to grind more on the lower hole, but the air compressor is just too loud for work at midnite.     | ||
| Rpm4x4 |
Can you post a pic of the inside of the hole you cut on top? BTW, I vote slashcut straight. | ||
| D_adams |
 | ||
| Rpm4x4 |
Sorry, posted before I went back to read first page. | ||
| Xbswede |
D-adams- That's looking sharp. I like the dual outlets. I went with a single on mine last year but depending on how yours look on the bike and sounds I may have to re-do mine again. I thought I wanted louder and then put a D&D pipe on. I have since switched back to my stock modified can and am happy. For those looking for a little better sound quality,improved tip design (not blowing on brakes) and no real need to tune (but helps), I think you are on the right track. | ||
| Milleniumx1 |
I'm liking where this project is going!! | ||
| Xb9er |
D adams is this something just for you or is this something you might start doing for others upon request? I'm in if your going to start to do for others. | ||
| Avalaugh |
I think once this is up and running, you should do a exchange service, there is alot of people who will go for this, especially with the slash cut tips, looking ace buddy. top work | ||
| Geforce |
Got a call from Dean. He's got my pipe installed on his bike and was able to do a road test. Looks like saturday is going to be a dyno pull. His bike was baselined on a factory pipe so we should have a good look and enough time for the ECM to "learn". Can't wait, it looks SO much better with those tips, they are angled more and I'll be perfectly happy with no performance gain if it comes down to it. So long as it doesn't drop to bad I'm all set. | ||
| D_adams |
Ok, road test and SOP dyno says no power lost. Much more thump, especially down low at idle. Kinda hard to hear it at 100+ but getting there it sounded freakin AWESOME. Too much traffic to really wring it's neck today. I did keep dropping down to 4th and then 3rd on the highway just to hear it at 75 mph. Very nice! More thump, but not too much. No longer sounds like a sewing machine with rocks in it.  It still needs cleanup work done and repainted on the top, but overall, it's good. The sheetmetal is a pain to weld, ran into some dirty spots in one of the old welds and it got messy on me. I'll try to get a video of it up later tonite or tomorrow. I'm going to ask the guy I ride with to shoot some video if we have time tonite, maybe a run down the entrance ramp onto the highway. His opinion was a huge 2 thumbs up sign when I pulled on the lot at work today. He said it sounded very good as well. It's louder than his Ti factory race pipe from Aprillia, so it's definitely louder than the stocker now. Xb9er - this one is for Cory (Geforce) but I'd do more of them if there's demand. Avalaugh - Yep, I could do an exchange program. Not sure on the turnaround time just yet. I only have Cory's pipe and mine at the moment. I'm also doing a slipon system for me that is coming along nicely. | ||
| Xb9er |
Dean, I would have no problem sending my pipe to when ever to have the same thing done. | ||
| Milleniumx1 |
Dean, I think you're onto something good here - Very likely to generate demand, starting with yours truly. A bit more sound without it being stupidly loud - A better look (slash tips) that preserves the original lines, angled out to keep from blowing on the rear brake - Ideally no loss of power, and best chances are a simple relearn on the current ECM/flash will do the trick. Like I said, I like where you're going with this ... Hoping for the best!! Mike | ||
| Hogluvr |
You can probably put me on your list of future customers as well. I think most of the aftermarket mufflers out there either look like $h!t or are WAY too overpriced for my meager means. I'm watching this thread with increased interest!  | ||
| Crkev |
Definetly would like to go this way with the stacked outlets! | ||
| D_adams |
Well, it's mostly labor to get this done. Cut the hole in the top, cut off the tips, cut out the s pipes (this one cost me 2 sawzall blades) then grind out the outlets (3 hours of time there alone) to fit the pipes. Custom cut whatever angle is asked for will determine the length of the pipe, roughly 8-10" and then weld in place. Weld the flap closed on top, smooth the welds on the top, shoot a coat of high temp paint over it. I guess I ended up with about 6 hours on this so far, just taking it slow and doing it right. Now that I know what's involved, I could probably do it in 4-5 hours. This first one will also have an extra hour for the dyno run. I can see I'm gonna have to get a 125 cubic foot argon tank too, this one is running out fast. I'm already down to 1400 psi on the tank, from 2200 initially. | ||
| D_adams |
Got another run in tonite, video was crap though. It was like stop motion video. Guess I went by too fast? I know I shifted into 6th when I went by and was probably at about 145-150 and pulling hard. It certainly doesn't feel like it lost anything and it sounds beautiful at full song. Even loping along at 3000 rpm it sounds good. Cory, I do believe this is what you wanted. | ||
| Anakist |
I just got a 90deg mandrel bend cut in half and welded on. Looked a bit crap until it was powdercoated and put on the bike, but now I love it. It has taken some of the harsh ka-ka-ka-ka off the exhaust and made it sound a little deeper too.  James | ||
| Reducati |
D...great job, and count me in on getting a pipe from you. thanks | ||
| Cafefun |
So how much to do this, probably some of us guys that are about done riding for the year could start sending you are pipes as long as the dyno says no loss of power. | ||
| Geforce |
Dean, give me a call this morning if you get a chance so I can hear it over the phone. The air force is moving us off our range very early today for some stuff they need to do, so I have most of the day off. Silly planes. | ||
| Buellhusker |
I had these extensions made at the local muffler shop I think they only cost 6 bucks or so.  | ||
| D_adams |
Heheh, sounded even better than I thought it would from a cell phone. (Message edited by d_adams on November 03, 2009) | ||
| Aeholton |
Sounds nice! | ||
| Reducati |
WOW...sounds great....if you get a chance how bout a drive bye! | ||
| D_adams |
At idle, I put the camera down by the outlets.  | ||
| Geforce |
I think "Operation Muffled Thunder" is a go! Man that sounds great! Can't wait to see what the dyno says. |
