G lader repair

[daniboy1_2_3 0]

Can anyone tell me how repairable the G lader is. I saw one on ebay recently described as damaged/repairable. There was a chunk missing from the centre scroll just where one of the apex strips would sit. The guy selling it seemed to think that this was repairable. Does anyone know what can be done with them in terms of repair to these areas? Can they be welded? what extent of damage can be fixed? Has anyone had one repaired? Cheers.

[coolrado 0]

The scroll is a very light weight magnesium alloy, and although it is possible for specialist welders to weld it (has to be done in an inert atmosphere iirc) this is usually a very expensive process, I am also not sure i would trust a repaired displacer unless it was tested for stress fractures either with a revealing fluid or X-ray, which is also quite expensive to have done.

[jonny-5 0]

How about the contact surface on the scroll that the other apex strips on the charger cases sit against? I have a random charger around at home and this area on it is unevenly worn, although the rest is mint! Is it possible to some how re-machine this flat surface?

[Supercharged 2]

It will never be a 'good' charger, why bother?

[coolrado 0]

How about the contact surface on the scroll that the other apex strips on the charger cases sit against? I have a random charger around at home and this area on it is unevenly worn, although the rest is mint! Is it possible to some how re-machine this flat surface?

assuming the outer case is just standard aluminium it would involve building up the wear face with a tig welder then using an end mill to re-machine the face, although finding someone who could or would be willing to would be a bit of a challenge, actually getting a welder between the vanes and then accurately machineing the face is a serious amount of work, i'm sure it's possible but whether it's financially viable is a different matter.

[ninoG60 0]

it would be ry hard work to put down a weld bead down at the bottom of the scroll i think as the electrode would have to stick out of the tig torch miles and this would mean that it wouldnt be able to make a good arc as it relies on ionisation of particles , erm in other words if you tried to tig weld so deep with the non consumable electrode sat out so far, with Aluminium alloy, it would just go black and not work, same would go for mig as the gap would need to be pretty close and i doubt you could get a mig torch down there unless it had a thin neck .

as for machining it would have to be a long series end mill or slot drill, you could get them i think but its all a case of getting it set up on a milling machine and then putting it on a rotary table so that you could accurately machine the weld bead assuming you could get it welded so deep .

Id not bother to be honest in other words

 

Maybe theres someone who has done it , credit to you if you have :salute:

[daniboy1_2_3 0]

Ok so refacing the scroll may be a little beyond what is worth doing. How about damage to the edges where the apex strips sit, in the scroll or the casing? are there any specialists on here who could maybe shed a little light onto this subject?

[coolrado 0]

again for the scroll that would involve inert atmosphere welding, and then machining the groove back into the edge of the scroll, its not like anything else could be used to patch it up as anything else other than magnisium alloy would effect the balance of the scroll and shake itself to bits.

the edges of the vanes in the outer casing would probably ok though, just find someone who can weld ally to build up the missing area and most decent machine shops should be able to re machine a small section of the groove, but again it comes down to cost and whether you trust the rest of the charger that has had a chunk of metal sucked through it.

 

And just to confirm the case is not magnisium alloy (i put a chunk of my grenaded charger on the gas cooker last night and it did nothing) the displacer on the other hand :shock: I am now partially blind :lol:

[jonny-5 0]

Yeh building up the contact surface with weld sounds well dodgy. I think it might be possible to be re-machine the surface as long as the minimum thickness is sufficient.

[daniboy1_2_3 0]

Well maybe someone who has had one repaired and reinstalled it or a specialist can come forward and shed a little bit more light.

[waynos 0]

is it really worth having new bits welded onto the charger? its going to cost more to do and will never be like new. You dont want a charger that could blow up any minute. Id just save for one in better condition, no point trying to take short cuts you will regret it

[daniboy1_2_3 0]

Well this is what im trying to find out from other peoples experience. I dont know if it is worth doing which is why i started this thread. Looking at the price of new/reconditioned chargers it is definately something worth looking into more. I was hopeing that more people would have come forward who have tryed to repair one but maybe no one has taken the risk in the past of having one repaired like this?. Im still hopeing someone who works on them for a living might come forward with an opinion on this.

[ninoG60 0]

i would say , try to get another one than repair one as such, it will never be "right" post weld stress cracking and you would have to make sure it was a sound repair before machining it as you could get porosity in the weld and then its grind back and start again, in my opinion i wouldnt bother. hope this helps

[W3RKD 0]

Post up a picture or a link, I should be able to tell you if it can be repaired...

 

D.

[daniboy1_2_3 0]

Ok thanks for that. Have you repaired them in the past then? If so do you still offer a guarentee on the charger? I dont have any pictures, it was a unit on ebay i was looking at but decided not to take the risk until i knew more about it.

[daniboy1_2_3 0]

Do you have any information on this then?