Jay Summet wrote: > It seems to me that the "ganged" nature of the caps shouldn't make the > pressure release valves in them any more or less "good". (unless they > are by different manufacturers from the individual caps)
I'm not aware of any pressure release valve in either type. The leakage I'm familiar with is typically 'weeping' around the gasket where the cap bayonets to the case. I think the issue with the ganged caps may be that play in the linkages connecting the caps, combined with tolerances in the bayonet attachment on both the case and cap can make it impossible to ensure that each cap is fully tightened. It is also possible that the quality/tolerances of the ganged caps is poorer than that of the individual ones, given that flooded lead acid batteries are a very cost-sensitive product and it seems unlikely that the manufacturers would willingly add cost by using a more expensive ganged cap assembly. Therefore, it seems the more complicated ganged cap assembly with its additional parts must be very similar in cost to that of the (higher volume, simpler) set of individual caps, which might be achieved through the use of lower cost materials and/or more lax production tolerances. Cheers, Roger. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
