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Doctor, I've got no pulse!
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<blockquote data-quote="69ST" data-source="post: 184111" data-attributes="member: 5"><p>Yep, it's a <em>Mofo</em> of a repair...or, it can be. There's not much working room for chiropractic adjustment to straighten the original. And there's absolutely no way to remove the original without destroying it. That's the main reason I thought about using a "blue wrench assist". Here come the "ifs"...if the bend is localized to the outside of the seat support and if one is skillful with the torch, it may be possible to heat the shock mount just to the plastic stage where it can be muscled back into shape. OTOH, if the deformation extends inside the frame, it's a whole other situation. Getting the center portion of the mount bright, cherry, red without injuring sheetmetal is about as risky as free-climbing a sheer cliff. The "canary-in-the-coal-mine" is frame alignment. If the seat supports are not exactly parallel (outward facing sections) to each other...top-to-bottom & front-to-back, the extreme structural strength of that part of the frame cannot be overcome, with any practical method. Consider some basic geometry & physics...once the mount is bent, the distance between its ends is shortened, that pulls the frame rails inward. Beyond mentioning the extreme vectors involved, I'll spare you a physics lecture; suffice it to say that shock mount does one incredible job of keeping the rear section of the frame stable. Once the tweakage we've been discussing has occurred, that structural rigidity becomes one tough adversary. I'm not holding out on you, there's not much I can really share. As a welder, I'm mediocre at best...except when it comes to sheetmetal. As for metalworking I learned old-school techniques. Hell, at this late date I <em>am</em> old-school. Unfortunately, this means knowing how to improvise, as the situation dictates...real seat-of-the-pants flying. I can replace a shot mount and straighten a bent CT70 frame in a few hours, plus or minus depending on the extent and location of the damage. That said, collision damage is not one thing and thus, neither are the repairs. Bottom line is that every frame has to be considered its own, unique, project...and...a truly irreparable CT70 is a rarity. IMHO, time, persistence and patience should carry you successfully through the process.</p></blockquote><p></p>
[QUOTE="69ST, post: 184111, member: 5"] Yep, it's a [I]Mofo[/I] of a repair...or, it can be. There's not much working room for chiropractic adjustment to straighten the original. And there's absolutely no way to remove the original without destroying it. That's the main reason I thought about using a "blue wrench assist". Here come the "ifs"...if the bend is localized to the outside of the seat support and if one is skillful with the torch, it may be possible to heat the shock mount just to the plastic stage where it can be muscled back into shape. OTOH, if the deformation extends inside the frame, it's a whole other situation. Getting the center portion of the mount bright, cherry, red without injuring sheetmetal is about as risky as free-climbing a sheer cliff. The "canary-in-the-coal-mine" is frame alignment. If the seat supports are not exactly parallel (outward facing sections) to each other...top-to-bottom & front-to-back, the extreme structural strength of that part of the frame cannot be overcome, with any practical method. Consider some basic geometry & physics...once the mount is bent, the distance between its ends is shortened, that pulls the frame rails inward. Beyond mentioning the extreme vectors involved, I'll spare you a physics lecture; suffice it to say that shock mount does one incredible job of keeping the rear section of the frame stable. Once the tweakage we've been discussing has occurred, that structural rigidity becomes one tough adversary. I'm not holding out on you, there's not much I can really share. As a welder, I'm mediocre at best...except when it comes to sheetmetal. As for metalworking I learned old-school techniques. Hell, at this late date I [I]am[/I] old-school. Unfortunately, this means knowing how to improvise, as the situation dictates...real seat-of-the-pants flying. I can replace a shot mount and straighten a bent CT70 frame in a few hours, plus or minus depending on the extent and location of the damage. That said, collision damage is not one thing and thus, neither are the repairs. Bottom line is that every frame has to be considered its own, unique, project...and...a truly irreparable CT70 is a rarity. IMHO, time, persistence and patience should carry you successfully through the process. [/QUOTE]
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Doctor, I've got no pulse!
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