One of our members has one and he had oversize pistons made for his. He told me the main problem with the outboard was they used air cooled motorcycle clearances which were too big for water cooled outboards. Most blamed excessive exhaust restriction on the poor performance and drilled extra holes in the muffler to compensate. He proved his point by running his Indian Silver Arrow all day at our Florida Chapter meet. I have to say it performed admirably. I have looked through my pictures and have sadly concluded his pictures must have been on one of the hard drives lost to one of Tampa’s numerous lightning strikes . . . 😥
