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10-18-2007, 10:01 AM
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 #1 (permalink)
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World Superbike Racer
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Can you dremel smooth inside welds of Y pipe?
So I gutted the cat on the R1 and I notice that the weld beads on the inside of the Y pipe are pretty pronounced and it seems to me like a great idea to make the bike breath better...If I don't ruin it...
So what do you welders and experts think, if I smooth the bead out not quite flat on the inside of my Y pipe, would it compromise its structural integrity to the point of ruination? Thanks guys
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...The thing that noobs don't get is that bikes aren't cars. With a car, more or less, you're as fast as your wallet allows. A bike is far more skill oriented. Way more. It's like skiing. You could go buy the fastest race skis available, but if you don't know how to ski, all you're going to do is crash. Its the same, exactly the same with bikes.
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10-18-2007, 10:11 AM
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#2 (permalink)
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A.K.A. - Booger Butt
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I'm no expert for sure, but I've seen plenty of welds ground down. My worry with the Y-Pipe is the heat that goes through there. I would be worried that as the Y-Pipe got hotter, the welds that you ground down would be made even weaker. Hopefully an expert can chime in though.
I don't konw if you'd even be gaining that much airflow to make that endeavor worthwhile. The reward probably wouldn't outweigh the risk, so to speak.
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10-18-2007, 11:07 AM
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#3 (permalink)
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Official Cager
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Esentially any excess (built up) weld bead that isnt penetrating the base metal isnt doing anything. A good bead will hardly stick above the surface of the base metal, because it has fully penetrated both surfaces and made them like one continuous piece.
So...short answer, yes.
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10-19-2007, 12:49 AM
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#4 (permalink)
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ReGgAe StYlEs
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It wont hurt it unless you start grinding into the weld joint itself...in other words, only take off the excess material and you will be fine. How much fall-through metal is there?
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If it isn't custom...is it really yours?
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10-22-2007, 08:53 AM
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#5 (permalink)
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World Superbike Racer
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What do you mean by fall through? The bead is protruding out from the walls looks to me to be 3-5mm on both sides all the way around...
__________________
...The thing that noobs don't get is that bikes aren't cars. With a car, more or less, you're as fast as your wallet allows. A bike is far more skill oriented. Way more. It's like skiing. You could go buy the fastest race skis available, but if you don't know how to ski, all you're going to do is crash. Its the same, exactly the same with bikes.
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10-22-2007, 01:21 PM
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#6 (permalink)
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ReGgAe StYlEs
Join Date: Feb 2006
Location: Sun Diego
Age: 25
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Sportbike: chromed out TURBO VESPA w/NOS & a 12-bar, and strobes!!!
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by "fall though" i mean the amount of metal (in this case weld filler rod) that went totally through the weld joint which now sits inside the pipe...that make sense?
__________________
If it isn't custom...is it really yours?
2001 GSX-R600: Custom Delrin Sliders and Spools, K&N filter, PCIII USB, 520 EK Chain, Woodcraft Clip-ons and Footpegs, Circuit 1 Case Cover, SS brake lines front and rear, GSX-R750 fork, and GSX-R1000 front brakes, GPR Stabilizer, CRG Shorty Levers, full Akrapovic exhaust, Renthal Grips, Greggs Customs Signals, CBR 954 Integrated Tail Light
Gear: Alpinestars SMK Jacket, Arai Quantum 2 Helmet, Alpinestars SPS Gloves, ICON Superduty 2 Pants.
JUST SAY NO TO CHROME!!!
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10-22-2007, 01:30 PM
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#7 (permalink)
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Yes its fine. Unless you are hamhanded. If that is the case, step away from the die grinder.
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10-22-2007, 05:18 PM
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#8 (permalink)
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World Superbike Racer
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No problems there if thats the only issue, I love using the dremel! Thank you 
__________________
...The thing that noobs don't get is that bikes aren't cars. With a car, more or less, you're as fast as your wallet allows. A bike is far more skill oriented. Way more. It's like skiing. You could go buy the fastest race skis available, but if you don't know how to ski, all you're going to do is crash. Its the same, exactly the same with bikes.
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