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Stuck at welshpool radiator leaks

 
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graeme bird



Joined: 15 Jul 2010
Posts: 434

PostPosted: Thu Jun 18, 2015 8:12 am    Post subject: Stuck at welshpool radiator leaks Reply with quote

Stuck in welshpool on the way back from ireland, the water radiator is dripping, any suggestions ? Anyone have a spare in the uk , swift have gone home but are they still available?

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Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk
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davidjoyce(at)doctors.org
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PostPosted: Thu Jun 18, 2015 1:00 pm    Post subject: Stuck at welshpool radiator leaks Reply with quote

Graeme, Are you sure it is thevradiatot not a hose connection above it? David Joyce, GXSDJ

On 2015-06-18 17:12, graeme bird wrote: [quote]
Quote:
--> Europa-List message posted by: "graeme bird" <graeme(at)gdbmk.co.uk (graeme(at)gdbmk.co.uk)>

Stuck in welshpool on the way back from ireland, radiator is dripping, any suggestions ? Anyone have a spare in the uk , swift have gone home but are they still available?

--------
Graeme Bird
G-UMPY
Mono Classic/XS 912S/Woodcomp 3000/3W
Newby: 150 hours 36 months on the Mono
g(at)gdbmk.co.uk


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JonathanMilbank



Joined: 14 Apr 2012
Posts: 394
Location: Aberdeen area

PostPosted: Thu Jun 18, 2015 3:07 pm    Post subject: Re: Stuck at welshpool radiator leaks Reply with quote

I heard of someone who claimed that if you drain the system, then put in a can of Holts Radweld and fill with water, run it on the ground for about 20 to 30 minutes, flush completely and replace with the usual coolant, it would be unlikely to see the leak reappear for many flying hours.

However I'm sure that this could only be a temporary "get you home" fix if the leak is just a "pinhole" in the radiator core and not a leaking hose or more severe crack in the top/bottom collectors or large metal spigots.

It would also be a good idea to perform a test flight close to an airfield and then inspect for leaks before setting off in good weather conditions with suitable diversion fields en route.

Really not to be recommended unless there is little alternative.


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graeme bird



Joined: 15 Jul 2010
Posts: 434

PostPosted: Fri Jun 19, 2015 1:10 am    Post subject: Re: Stuck at welshpool radiator leaks Reply with quote

thanks; abandoned plane with the very nice people at Welshpool. Brough rad home to Milton Keynes; looks repairable, but baffled by why a leak would develop at 180 hours in such a place; even given a poor landing or two.
Its where one thin tube joins the main block, back right about 1" up. Maybe poor manufacture or torsional forces/vibration.

In stock at Europa so decided to take the opportunity to support them even though painful.

May repair for my amusement

Nice flight to Waterford and Tipperary preceded the 'event' thankful nothing happened during the water crossings. First time to Ireland yeah!


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Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
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Fred Klein



Joined: 26 Mar 2012
Posts: 503

PostPosted: Fri Jun 19, 2015 4:06 am    Post subject: Stuck at welshpool radiator leaks Reply with quote

Graeme,

As sorry I am to hear of your travails and the trauma of abandoning your bird, (for hopefully only a short while) I�ve always found it fascinating to hear you UK flyers nonchalantly refer to storied locales with, at most, a mere shrug of the shoulders�the many places you get to fly over or in and out of with all sorts of historical significance.

I understand that it�s a long way to Tipperary�perhaps a perfect place to visit in a Europa.

Best of luck becoming airborne once again,

Fred

Quote:
On Jun 19, 2015, at 2:10 AM, graeme bird <graeme(at)gdbmk.co.uk> wrote:

abandoned plane with the very nice people at Welshpool. Brough rad home to Milton Keynes; looks repairable, but baffled by why a leak would develop at 180 hours in such a place; even given a poor landing or two.

Nice flight to Waterford and Tipperary preceded the 'event' thankful nothing happened during the water crossings. First time to Ireland yeah!


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Duncan McFadyean



Joined: 18 Jan 2011
Posts: 224

PostPosted: Fri Jun 19, 2015 8:17 am    Post subject: Stuck at welshpool radiator leaks Reply with quote

Any chance of a photo of the crack?

Duncan McF.



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graeme bird



Joined: 15 Jul 2010
Posts: 434

PostPosted: Fri Jun 19, 2015 9:06 am    Post subject: Re: Stuck at welshpool radiator leaks Reply with quote

its more of a tiny crater or solder bubble; perhaps a manufacturing flaw. The brown is my stupidity, tired to get the engine hotter in winder, but putting some roofing joint tape over a bit off it, or course it was tar based and I had to remove with petrol (from the other side)

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Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk
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rparigoris



Joined: 24 Nov 2009
Posts: 797

PostPosted: Fri Jun 19, 2015 10:10 am    Post subject: Stuck at welshpool radiator leaks Reply with quote

Hi Graeme
If it were I who was stuck, if I knew my aeroplane and surrounding flying area and it was landing friendly, I wouldn't have a problem cleaning it as best you can, then applying some JB KWIK Epoxy (which IMHO should be in every repair kit for every vehicle you own). It used to be touted as 4 minute, now it's touted as 6 minute, I would wait at room temperature for at least 2 hours before filling with coolant and warming it up. Temperature rating is well above spit (and coolant) sizzle temp. I would then go taxi around and get things real hot and see if it's working. If it holds under the very hot temp you just tested to. Then I would launch at dawn or when it's the lowest temp you can find and keep things as cool as you can. I'm not familiar enough with Rotax operation on your aeroplane, but on automobiles if you can not heat up coolant too much, leave the radiator cap loose where it isn't under any pressure. Then if you test with pressure and fly with none chance of success is increased greatly. Look for a reason, any good reason to not do as I mention, If you can't find a good reason to not do it............
Over the years I have done roadway repairs on quite a few radiators for cars and motorcycles. Even what seems like impossible situations can be overcome if you have some JB KWIK. A few months I rescued a friend with a high end Jap car with aluminium radiator and plastic radiator hose nipple. The top nipple pretty much disintegrated, just touch it and it cracked into pieces. Late at night nothing opened. I garbage picked a coke can, cut it with my Swiss Army knife into a sheet, scuffed where Epoxy was going to go, poked some strategic holes here and there, sewed up as needed with safety wire (another thing you want in tool kit) if you don't have, paperclips work OK as would bailing wire, even copper wire). Anyway went after it with JB KWIK, left radiator cap loose and he used the car a week like that!
Good luck
Ron Parigoris [quote][b]


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graeme bird



Joined: 15 Jul 2010
Posts: 434

PostPosted: Fri Jun 19, 2015 11:18 am    Post subject: Re: Stuck at welshpool radiator leaks Reply with quote

So I have a theory as to the cause and its linked to the weeping I used to get on shut down (from new) and the split pipe I had over the radiator junction. The radiator wasn't leaking in flight, it started when I shut down. When the water pump stops working and the engine is hot, from landing with the prop on fine and highish revs, the pressure builds up at this end of the radiator. Now I have clamped it all up and stopped any leaks its found a weak spot in a rad weld and made a small puncture.
I wonder if the cap needs to be a lower pressure one so it vents properly instead of knackering the rad?


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Graeme Bird
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Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
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ptag.dev(at)talktalk.net
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PostPosted: Fri Jun 19, 2015 12:31 pm    Post subject: Stuck at welshpool radiator leaks Reply with quote

Could easily boil dry with a less poundage cap.!
Not a good idea.
Regards
Bob H G-PTAG.

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