nklr: quiet helmets

[Glen]

hey all, i was proudly and happily putting the motor all back together and back in the bike when i ended up tightening the water pump impeller shaft too tight and snap off it broke. i was very mad and just about gave up because i knew that to replace the shaft meant i had to completely disassemble the motor, since that is what i had just finished doing. i went ahead and finished installing everything else because i decided that i wasn't about to take the whole bike apart just to fix that one little shaft. so what i did was i removed the broken bit from the nut and i JB welded it to the shaft. it was a clean break so it fit and welded on quite nicely. i am letting it sit over nite and then the plan is to attempt to put the impeller on and tighten the nut down again. my theory is that if i can actually get the nut to tighten it down to the right torque then it should work as good as new since i know that it is not a high torque/high strain part anyways as is evidenced by the fact that it broke under such little torque in the first place. so the plan is to try this bright and early tomorrow morning and see what happens. am i crazy or can anyone else think of how they would fix it?? glenski a14

[Stan]

My experience with epoxy-based fixes is that they fail under cyclic loads. Do you think the load on the part in question is cyclic? Any chance of getting it TIG welded or brazed? Keep in mind that static stress / strain is just one dimension of material behavior. What might be strong under static or unidirectional cyclic stress might fail quickly under stress reversal. I think your theory should accommodate this. -S Glen wrote:

>hey all, > >i was proudly and happily putting the motor all back together and >back in the bike when i ended up tightening the water pump impeller >shaft too tight and snap off it broke. i was very mad and just >about gave up because i knew that to replace the shaft meant i had >to completely disassemble the motor, since that is what i had just >finished doing. i went ahead and finished installing everything >else because i decided that i wasn't about to take the whole bike >apart just to fix that one little shaft. so what i did was i >removed the broken bit from the nut and i JB welded it to the >shaft. it was a clean break so it fit and welded on quite nicely. i >am letting it sit over nite and then the plan is to attempt to put >the impeller on and tighten the nut down again. my theory is that >if i can actually get the nut to tighten it down to the right torque >then it should work as good as new since i know that it is not a >high torque/high strain part anyways as is evidenced by the fact >that it broke under such little torque in the first place. so the >plan is to try this bright and early tomorrow morning and see what >happens. am i crazy or can anyone else think of how they would fix >it?? > >glenski >a14 > > > >List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html >Unsubscribe by sending a blank message to: >DSN_klr650-unsubscribe@yahoogroups.com . > > >Yahoo! Groups Links > > > > > > >

[Chris]

To be honest, I'd take a few days breather and fix it the right way. I shortcutted a broken head stud on a VW Beetle only to have that piston lose compression a month later on a trip away from home. That was the last major mechanical piece I gave up on. Why risk losing your cooling? It sucks, but I'd just do it.

On Tue, Jun 08, 2004 at 03:55:18AM -0000, Glen wrote: > hey all, > > i was proudly and happily putting the motor all back together and > back in the bike when i ended up tightening the water pump impeller > shaft too tight and snap off it broke. i was very mad and just > about gave up because i knew that to replace the shaft meant i had > to completely disassemble the motor, since that is what i had just > finished doing. -- ___ ______ _____ __ ________ ___ / _ |< < / == / ___/__ / /_ /_ __/ / __ ____ _ ___ /__ \ / __ |/ // / ****/ (_ / _ \/ __/ / / / _ \/ // / ' \/ _ \ /__/ /_/ |_/_//_/ == \___/\___/\__/ /_/ /_//_/\_,_/_/_/_/ .__/ (_) 8600 miles*Russel Lines*Supertrapp Race* /_/ http://www.kingsqueak.org/klr650/

[jim davis]

I just moved from the Symax to an Arai Quantum-II. I am still amazed at the difference in quiet and comfort.

--- In DSN_klr650@yahoogroups.com, Mike Frey wrote: > While on the subject of noise, how about some comments on helmets and > wind noise and aerodynamics: > > My newest helmet, an HJC Symax, makes quite a bit of noise around the > flip face feature. I love the helmet otherwise and usually use this one, > but would like to know whose helmet is quiet - and - most free from > buffeting at high speeds. I assume that the 2 are related. > > Anyone want to offer opinions on their experience? > > Mike "It only makes noise on the RH side!" Frey