CREATE TABLE table_33544 ("Place" FLOAT, "Rider" TEXT, "Country" TEXT, "Machine" TEXT, "Speed" TEXT, "Time" TEXT, "Points" FLOAT)

Which rider from the 1971 Isle of Man Junior TT 250cc final standings had a speed equal to 86.15mph?
SELECT "Rider" FROM table_33544 WHERE "Speed" = '86.15mph'
SELECT "Rider" FROM "table_33544" WHERE "Speed" = '86.15mph'