capacitor replacement

[mike 109444]

My old Clarke 120 (25 ish years old) needs the capacitor replacing ( the terminals were loose and only riveted over alli) The current cap is a 33,000 uf at 50v. I have looked up replacements (not dirt cheep!). What I was wondering was what would be the effect on welding of a slightly higher value cap, next value up is 47,000. The welder welds crap with the poor connections on cap, no penetration even on highest setting (6). I have never used the 1,2,or 3 power settings as I don't find them powerfull enough for even car body which is 90% of what I weld. It would be nice to up the overall power just a bit and is why I thought the cap might help? The welder does use a combination of cap and inductor coil. Have previously looked around forum ref "capacitors" but what little is mentioned does not cover this question. I work in electronics but don't have access to caps of this size in current job
Ta from Mike in Sunny south Bristol (well it was today )

 

[R Kraft]

If a slightly larger capacitor would physically fit in the space,a 47,000@50v should be ok to use.
Robert

 

[mike 109444]

Thanks R Kraft, yes there is enough room but my question was would it improve (increase) the power a bit. I would buy one of each and try but at about £20 to £40 a pop it's a bit dear to just experiment. Was wondering if anyone had done this and seen a noted change.

 

[mike 109444]

Well i've ended up repairing the ori capacitor by taking it apart Remaking the connections to outside as temp fix. Have gone ahead and ordered a 47000uf cap on the expectation that ori would have been the minimum that manufacture could have got away with. When it arrives will see what difference it makes. May even try putting both in (in parrallel) to see what the effect of 33000 + 47000uf makes!

 

[R Kraft]

The new capacitor is a good idea.
The capacitors that are used in a welder have fluid in them, and are subject to wear and aging.
25 years may be about the limit of the life expectancy.
Robert