Velocivixen,

Thanks for posting the detailed pictures of your Bigfoot. I mean your bicycle. I think it is wonderful.

There is a strong connection to Norco MTBs. Many, but not all, of the Sekai MTB model names had Norco counterparts.

Serial number: Looks like DSRM, it is really DSBM. The stamping was not well executed and this happened many times with the letter 'B'. My Norco Bushpilot stamping looks the same.

DSBM = Dodsun Bicycle and Machinery Manufacturing of Taiwan. I have seen a Norco Bigfoot with a DSBM serial number.

I have not determined if the first number in the numeric part of the serial number is significant. The first number may be the year of manufacturer of the frame.

"golf club" type stem: I have not seen any early Norco MTBs with this type of stem. I have seen pictures of a Sekai Grizzly MTB with this stem and bi-plane forks.

"Alpine Edition": Norco bicycles in 1985 and 1986 had decals in the middle of the seat tube, that said what Series they were: Racing, Touring, Sports, Mountain, and possibly others. The MTBs that I have seen are all Mountain Series.

Sekai bicycles of this period also had a seat tube decal but I have never seen pictures of enough detail to read them. "Alpine Edition" makes sense for MTBs.

I am glad to hear that you like the bike. When I found an old Norco Bushpilot in a dumpster I knew it was not valuable, but it had some unique things: bi-plane forks. I had to save it and fix it up.