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Coolant core question - "Aw shit"

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paul.the.aviator(at)gmail
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Posted: Wed Jun 10, 2009 10:34 am Post subject: Coolant core question - "Aw shit"

Hi all, 

This question is probably for the US folks.  I had a serious "Aw shit" on Monday night.  I had my coolant radiator from my XS on my workshop floor and a G clamp fell off the shelf and put a dent in one of the water tubes.  The tube isn't fractured, however it sure looks like a place that will spring a leak.  My first inclination was to just buy another one and I my still do so, however a new one from Europa is $540 plus freight.  

My question to the forum is does anyone know of a specialist welding shop that would take a look at the core.   

Another approach is for me to pressure test it for a bunch of cycles and see if it leaks, (maybe even bead blast it and put some Redux on it to reinforce it).  Any suggestions on what pressure ?  1.2 BAR + 18,000 + 25 % ?  

Thanks,  Paul  [quote][b]

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pete(at)lawless.info
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Posted: Wed Jun 10, 2009 11:27 am Post subject: Coolant core question - "Aw shit"

Rather than Redux there is a specialist product for the job, it is a sort of brown goo that sets solid.  Try your local car radiator repair shop.   

   

Regards  

   

Pete  

       [quote][b]

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rparigor(at)suffolk.lib.n
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Posted: Wed Jun 10, 2009 11:42 am Post subject: Coolant core question - "Aw shit"

Hi PaulForget Redux, it will be way soft at 212F.I will go as far and say "every" europa that flys away from home should have JB KWIK with them! It takes 4 minutes to cure and TG is i think ~350F.see:http://www.europaowners.org/modules.php?set_albumName=album290&op=modload&name=gallery&file=index&include=view_album.phpi am not suggesting to make a repair on your radiatior with it, but if you had a pinhole leak and plenty long runway.....As far as your repair, first off have you ever seen Katana installed radiator on Europa? If you were ever thinking on cooling mods and it included a radiator change....As far as a repair, if the tube is aluminium I don't think you would want to weld it, aluminium brazing rod and a patch??First go visit a radiator repair shop, many autos use aluminium. Also go visit a refrigeration and air conditioning place, try and go in back door, I knew a guy who was god when it came to such a repair.If it looks like a repair that needs welding, I have a Hobart TRT250 TIG welder, would give it a go. Best find out precise what type of aluminium alloy and what is suggested welding rod to be used from Roger. I would purge inside of radiator with argon to keep weld from getting contaminated.If youchoose the patch route, again first suggestion is patch and aluminium braze, if you must use adhesive, a super clean joint and patch and JB Weld (not the KWIK but red and black tube) 8 hour cure has a I think 550F TG. Make adhesive as thin as you can and patch very thin. Good LuckNext post we want to see "AWE", not "Aw"!Ron Parigoris   [quote][b]

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budyerly(at)msn.com
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Posted: Fri Jun 12, 2009 3:14 pm Post subject: Coolant core question - "Aw shit"

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Sorry for being so busy lately, I missed your problem.

 I too had a similar problem on the old classic.  I had it checked at a  radiator shop and all was well.  I will fly it, but if it fails, I found  that the cooling tube goes all the way from front to back and my  welder suspects that cutting away a bit of the aluminum heat fin away in the  front and a tack on the dent with the tig welder would make it  serviceable... 

  

 As far as replacements go, there are specialty shops which make coolers for  racing, but at a cost and tinkering.  I'm just going to cough up the dough  for the original to forgo the inevitable reinvention of the wheel.  Easier  to remove and replace than reinvent. 

  

 Whoever thinks that radiator seal or glue (redux) is the answer, please  don't.  Better to be safe on the ground with a leak than in the air with  one waiting to happen.

  

 Just my opinion

  

 Bud

 [quote]   ---

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n9zes(at)verizon.net
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Posted: Sun Jun 14, 2009 6:46 am Post subject: Coolant core question - "Aw shit"

I'm assuming it's aluminum, no?  If so, pretty much any weld shop that can handle aluminum TIG welding can repair it.  Even better would be a shop that specializes in race cars or motorcycles since many times they are fabricating custom tanks and/or radiators and intercoolers out of aluminum.

 

 Chris

 

 Paul McAllister wrote: [quote]   

Hi all,   

This question is probably for the US folks.  I had a serious "Aw shit" on Monday night.  I had my coolant radiator from my XS on my workshop floor and a G clamp fell off the shelf and put a dent in one of the water tubes.  The tube isn't fractured, however it sure looks like a place that will spring a leak.  My first inclination was to just buy another one and I my still do so, however a new one from Europa is $540 plus freight.   

My question to the forum is does anyone know of a specialist welding shop that would take a look at the core.     

Another approach is for me to pressure test it for a bunch of cycles and see if it leaks, (maybe even bead blast it and put some Redux on it to reinforce it).  Any suggestions on what pressure ?  1.2 BAR + 18,000 + 25 % ?   

Thanks,  Paul    	  Quote: 	
		  







  	
 [b]

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paul.the.aviator(at)gmail
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Posted: Sun Jun 14, 2009 8:44 am Post subject: Coolant core question - "Aw shit"

Hi Chris,



Nice to see your name on the forum, I havent heard from you in a long time. Lets hope that this is a sign of you getting back into building again !



I have done a bit of research and yes, it would seem that most radiator shops can handle this sort of thing.  I did take it to a master welder who specializes in stuff for the aerospace industry.  He does (among other things) very fine TIG welding, but was of the opinion that aluminum brazing would be the way to go which wasn't something he was set up for.

 

I have found a number of places on the WEB that specialize in this sort of thing for motor bikes and ATV's, but before I ship it off I am going to check to see if there is anyone local.



I'll keep everyone posted as to the outcome.

 

Paul



On Sun, Jun 14, 2009 at 8:15 AM, Chris Beck <n9zes(at)verizon.net (n9zes(at)verizon.net)> wrote:

[quote]            I'm assuming it's aluminum, no?  If so, pretty much any weld shop that can handle aluminum TIG welding can repair it.  Even better would be a shop that specializes in race cars or motorcycles since many times they are fabricating custom tanks and/or radiators and intercoolers out of aluminum.

 

 Chris

 



[b]

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