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Bluzzit34
| Posted on Monday, September 21, 2009 - 01:09 am: |
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So, i had the mount welded back about 4 months ago, and it broke again- just in a different place. I'm hesitant to get it welded again, because I think its just gonna break once again. I was thinking about just drilling a set of holes in each part of the bracket, and using maybe some cable or wire to hold it together. Plus, its a pain in the ass to take the exhaust off. Any ideas?
![exhaust mount](http://www.badweatherbikers.com/buell/messages/47623/497576.jpg)
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Pkforbes87
| Posted on Monday, September 21, 2009 - 01:53 am: |
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I've always wanted to test a theory of mine on a beat up force exhaust system. My idea is that too much pressure is put on the exhaust mounts and exhaust studs due to a lack of flexibility throughout the entire header and pipe since it is designed as one solid piece. If the header pipes were cut at a location without bends, then a collector welded onto one side and the two ends joined with a band clamp, then these joints would provide some flexibility to absorb the movement and vibration of the entire exhaust system. I've got in mind to use these exhaust clamps:
http://www.jegs.com/i/JEGS/555/30732/10002/-1 I use these for my X1's exhaust system and they work like a champ. That isn't proving anything though, since a stock X1 header and D&D muffler are not known for cracking at the mounts or anywhere else. |
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Blake
| Posted on Monday, September 21, 2009 - 07:26 am: |
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Vibration is the enemy. The XB exhaust mounting system got it right. Rigid and tightly clamped to the engine/tranny so they all vibrate together as one. If any part of the exhaust track is allowed to vibrate independently from the engine/tranny, then fatigue failure will be a concern. If a slip joint can prevent vibration from be transmitted, that may help too, but I'd much rather try to clamp the exhaust all together very solidly and then fasten and clamp it solidly to the engine/tranny akin to the XB system. |
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Blake
| Posted on Monday, September 21, 2009 - 07:27 am: |
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The type of joint for connecting header runs though is the spring loaded type. You know the ones? |
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Ratbuell
| Posted on Monday, September 21, 2009 - 07:41 am: |
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Looking at your picture, your mount was welded on too far down the slope of the muffler (too far away from the other mount). That put it on an angle like |/, and it cracked. But that's just my guess... |
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Blake
| Posted on Monday, September 21, 2009 - 11:14 am: |
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That, and it was mounted onto a Buell tube frame motorcycle, the beast most unforgiving/intolerant of exhaust tract structural deficiencies to have ever rolled on two wheels. |
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Blake
| Posted on Monday, September 21, 2009 - 11:15 am: |
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Please do NOT ask me how I know. |
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Ratbuell
| Posted on Monday, September 21, 2009 - 12:07 pm: |
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Exhaust is the one thing I've managed not to break on any of my tubers. knock, knock. Oil leaks, I've got. GDMF pushrod tube bases...AGAIN. Guess it's time to step up to the billet bases. Maybe the lubrication lets my exhausts move around enough to keep 'em from breaking, LOL. |
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Davefl
| Posted on Monday, September 21, 2009 - 12:47 pm: |
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Blake, I think I remember how you know.
![](http://www.badweatherbikers.com/buell/messages/43/41291.jpg) |
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Blake
| Posted on Monday, September 21, 2009 - 04:39 pm: |
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That is just one, and one I knew better of too. That muffler had been recalled, but I ignored it as I had purchased it used.. |
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Blake
| Posted on Monday, September 21, 2009 - 04:40 pm: |
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The worst one was when the rear header let go at the collector and flopped up into my lap. |
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Ratbuell
| Posted on Monday, September 21, 2009 - 04:51 pm: |
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...and this is why both my race mufflers have their 'leashes' installed ![: )](http://www.badweatherbikers.com/buell/clipart/happy.gif) |
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Maru
| Posted on Monday, September 21, 2009 - 05:40 pm: |
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Is the newer style front mount worth trying? |
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Bluzm2
| Posted on Tuesday, September 22, 2009 - 12:04 am: |
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Speaking of leashes, anyone know where I can get one for the race muffler? |
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Brinnutz
| Posted on Tuesday, September 22, 2009 - 12:21 am: |
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What are these leashes you speak of? Even I don't know...lol |
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Ratbuell
| Posted on Tuesday, September 22, 2009 - 12:27 am: |
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It's a small cable that rivets to the front of the muffler can, and the other end goes to one of the primary cover bolts. Keeps the front of the muffler from hitting the ground if it seperates, and becoming a pole vault. I don't seem to have any pics of one, but I can take one or two tomorrow before work. Not the sexiest item...but definitely functional. |
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Ratbuell
| Posted on Tuesday, September 22, 2009 - 08:04 am: |
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...and it just popped up in another thread: http://www.badweatherbikers.com/buell/messages/384 2/B034-263581.pdf |
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Court
| Posted on Tuesday, September 22, 2009 - 08:10 am: |
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>>>Keeps the front of the muffler from hitting the ground Which is an excellent idea . . . I had a rivet sever at the second first annual Buell owners gathering (Arkansas - 1997) at speed on an S1 and the muffler went straight back into the tire and cut a nice groove in it. I'm a believer. |
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Ratbuell
| Posted on Tuesday, September 22, 2009 - 09:21 am: |
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....and for under $10, it's why I added it to both my tubers when they got their race exhausts. H-Dnet shows a few out there (94002Y). It's obsolete - I guess they fulfilled their recall requirements - but it also shows Vintage Parts, Inc. has them in stock. |
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F_skinner
| Posted on Tuesday, September 22, 2009 - 10:11 am: |
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Joe how do I go about getting one? I do not have that on my race exhaust. Is Vintage Parts Inc in HD Net or a different site? Frank |
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Ratbuell
| Posted on Tuesday, September 22, 2009 - 10:23 am: |
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Vintage Parts is a "dealer's dealer", so to speak. They stock...you guessed it, obsolete parts for HD/Buell bikes, for sale to HD/Buell dealers. Kinda like an independent obsolete-stuff warehouse. I can get one or two ordered for you here if you want, but it may be worth your time to try your local guys, and see if they can order from VPI. If nothing else, it might save you some shipping. If you want me to, though, just LMK and I can put in an order for ya ![: )](http://www.badweatherbikers.com/buell/clipart/happy.gif) |
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F_skinner
| Posted on Tuesday, September 22, 2009 - 10:25 am: |
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Ok Joe, I have a parts list to go to the local guys at HCHD and I will tap them for it. Thanks, Frank |
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Bluzzit34
| Posted on Saturday, September 26, 2009 - 09:09 pm: |
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so, i dunno if its a crime, but I just got about 5 bucks of parts from the hardware store and rigged it up- some sheet metal, self tappers, and a hose clamp. If it lasts then good, but it probably wont. When I actually have some income, or time, ill take care of it the real way. Maybe ill try something to prevent it from happening again for sure.
![](http://www.badweatherbikers.com/buell/messages/47623/499114.jpg)
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Mick
| Posted on Saturday, September 26, 2009 - 10:07 pm: |
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this is how my pipe is mounted, front and rear , by a rubber mounting block. As you rev the bike you can see the pipe moving back and forth, but the rubber mounts take the vibration and not the actual mounts on the pipe. I have replaced both front and rear rubber blocks (cheap, from any motor parts supplier)that have split through , but the mounts on the pipe have never cracked. My take on it is, the more solid the mounts the more likely welds will crack .
![](http://img24.imageshack.us/img24/1359/pics001medium.jpg) |
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Bluzzit34
| Posted on Sunday, September 27, 2009 - 12:32 am: |
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I see, but I think with the force being one piece it might be the opposite. There are rubber pieces between the mounts on the force exhaust (you can see the red piece) and i think it might be making it worse. When I get a chance, I will try to get it welded back together, and do some rubber spacers like that, though. Thanks. |
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Mick
| Posted on Sunday, September 27, 2009 - 01:40 am: |
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the rubber mounts are more like two bolts joined in a block of rubber . http://www.bareco.com.au/files/general/g21e.htm |
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