81-84 R's can take and spank a 400ex stock to stock and pull at least a 2 biek lenght lead, i had 2 airs now i got one of each (water-cooled, air-cooled). the air-cooled by far is coolest first twostroke trike * will have, its a blast, great low-end torque and just keep pullin from the bottom to top, the water-cooled is defenly a step up but it takes the skill * learned on the older stuff to ride and grow even more skillful on the water-cooled, the powerbands on the two bikes are night and day, the air-cooled will almost always be in reach, were sometimes the water-cooled takes full throttle droppin a gear or gears to get back into the high rpm powerband. the water-cooled R's had a stated 39 horses were the air-cooled had about 28 on a 84 and drop about two horses for the 82 and 2 more for the 81, try to see if its a 82-84 they had disc brakes with a little more techonolgy every year. the 81 was the first year out in production, even tho its a great atc its got the first trip around the block flaws with many the drum as most and little preformance things carb,pipe, thats about it 82-84 is when honda got its act together. good job on the find and i hope we get some pics soon
adam
86 ATC 500R the duner..
85 ATC 500R...the not quite finished faster duner
1985 ATC 250R Bone stock!!
1985 ATC250R mx/duner
1986 TRX370R MX/Duner
94 Banshee 400PV Cheetah 105RWHP