Can anyone give me info on these serials. Also the tubing diameters. Ive found scattered info in the forums but not enough detail yet.







thanks in advance
waza007

Warren, they are an `82, `83, and `84, top to bottom. Based on the year alone, I would say that the `82 is a Pro Class, since the looptail Supergoose didn't come out until late `83. Take the BB & headtube cups out and see how thick the tubing is-it should be noticeably thinner than any standard `goose tubing. Pro Class tubing diameter is as follows: top tube is 1 1/8", down tube is 1 1/4" (standard is 1 1/8"), rear triangle is 3/4" (standard is 5/8"), and has a three-hole rear brake bridge. Seat post tube is larger diameter as well, but I don't have those dimensions.

Some looptail Supergooses will have the same tubing diameter , but it will not be the lighter weight thin-wall tubing that the Pro Class has.

Verify that the frame that was actually stickered as a Pro Class has the same tubing diameters/thicknesses as mentioned above-sometime in the las 23 odd years someone could have easily re-stickered a Supergoose with Pro Class stickers, which leads me to the third frame. Unless that seatpost sticker actually says "Mini" on it anywhwere as well as Californian, it's not a Californian, just a Minigoose.

Clear as mud?

-Dave

By the way, there was not an Eric Rupe model until at least `85, possibly `86.

Here's a link to an old thread w/pic's:

http://www.vintagebmx.com/cgi-bin/ultimate...=1;t=024249;p=2

The j4000*** is a rupe,top and bottom tubes should be 1 1/4.

Thanks Dave

Ok i just checked.
both the 82 and 83 are thin wall proclass's
with 1 1/4" downtube and 1 1/8" toptube

the 84 is eric rupe (has eric decals still on it)
with both tubes 1 1/4"

all rear tubes are 3/4" and the pro's have 3 holes in the brake bridges

last but not least the pro class's were bought from a mongoose sponsored rider









Oh i almost for got this one as well my pro class 24

Very sweet score!

Sell me the rupe and we will call it a day.

Hello ! My Mongoose looptail frame has the serial number J4000946 and it's a Rupe : toptube and downtube are 1 1/4 " diameter, toptube is 19,5 " center to center and it has the bigger diameter seatstays tubes. It has only 1 hole in the rear brake bridge.The looptails Supergoose have smaller toptube and the Pro Class have not both tubes 1 1/4 " diameter.
Regards.