G'day engine folk.

Some time ago I wrote asking how to get an MDS 48 to throttle. (Actually it turned out to be a 46). Anyway, we have been flying it on a Kadet Senior with some success but it was always really rich in its mid range. Idle was perfect, throttle transition was good and the top end was fine but the midrange and in particular the lower part, was soggy.

Anyway, we kept at it but today its owner announced that he wanted to put it in an ARF Cessna and I decided it was just not reliable enough so I started looking in my small collection of carbys for one that might be better than the original. Most Asian carbys are too small by about 1mm so the ones I had were useless. That was until I remembered that I have a Super Tigre GS40 without a head but complete apart from that. Might this carby work?

In short - YES. It fitted perfectly and it runs fine. It needed a 1/8 turn leaner on the LSN and we have a perfect idle, perfect midrange and great top end. Throttling is good too. So into the Cessna it goes.

It is nice to win one occasionally.