![]() ![]() ![]() Most multicylinder models featured a small window to simplify timing by showing when the rotor is on #1 without taking the cap off. There is also a special group of XH series mags used mainly by Caterpillar for pony motors discussed in a dedicated page to help keep you crawling and pushing dirt. The first coils supplied were a varnished tape wound device later replaced by a hermetically sealed device in a phenolic case. The condenser is more robust and long lasting. The armature shaft is supported by a standard powder metal lubricant impregnated bushing inside that is much easier to service than the predecessors. The XH and XHD used a more robust and simpler cap and rotor, and a substantial sealed ball bearing on the armature shaft yet shared many of the impulse parts of the model C. ![]() The XH and XHD were a welcome change from the model C that had sleeve bearings that never got oiled, and a vulnerable 2 piece cap. The Wico XH and heavier duty XHD probably appeared in the 1940's after the Wico C. ![]()
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