first off, if im posting this in the wrong area, my bad but i tried searching the forums before i decided here.
with that said...
i need help identifying a frame. i found this bike 2 years ago on the side of a fairly busy road in my town. it looked pretty weathered like it was sitting there for a while. it had wheels but no tires. seat post but no seat and the bar tape was just disintegrating off the bars so i decided to bring it home with me. i cleaned it up did minor adjustments to the derailers and shifters, put new tires, seat, and bar tape. the bike is awesome and i fell in love with it quick an it is now my main ride. where i live is very flat and i found myself riding in one gear pretty much all the time. i then decided to convert it into a fixed gear since i was ignoring all my other gears and i was already riding a fixed before i found this bike. so i stripped the bike to the bare frame. decided to upgrade my fork and headset so i got a carbon fork off nashbar and canecreek forty threadless headset. i swaped by bars for a pair of ritchy comp ergo drops. got whole new tires. and new sealed cartridge bb, and new cranks.

while was doing all the fix ups i noticed a few things about the frame that really peaked my interest in figuring out just what kinda frame the universe had given me... first thing was the bottom bracket. its its italian threaded. second was the fork and stem. the fork steerer has a cut down the threads on the back. the o.d of the steerer is 25mm and the inside is 21mm. the stem that was on it was an sr forged stem. i couldnt use any other quill stems on it because they were too big to fit in the steerer and the sr forged one was too small to use on any of my other bikes. so with that i came to the conclusion that it might be an italian frame. the frame had no decals no head tube badge or nothing stamped down under the bb shell. the only stamped parts are the the rear dropouts(suntour) the left side of the seat tube just below the lug(001199) and the seat tube lug(23) all i know is that the 23 is the frame size.

the bike as i found it had some pretty nice components.
t.a specialtes pro5 vis crankset
olympic 64 pedals with cages
suntour cyclone derailleurs
suntour bar end shifters
regina extra oro 6sp freewheel
sr forged stem, sr royal seat post, sr world randonneur bars
mavic red label rims with normandy luxe competition hubs

heres a few pics of the frame and lugs. i hope SOMEONE can help me i.d it... link to what the whole bike looks like since it wasnt letting me upload this image for some reason... https://www.flickr.com/photos/125914...8/16290450433/

Pic assist.

cool, thanks for that!

Hello Raul,

Welcome to the forum.

Is that you playing the banjo in the video?

The individual photos are generating an error message.

The video is too rapid and lo-res to tell much of anything so all we have to go on is the one photo cb400bill helped with.

The frame looks to be an asian production one from the early to mid 1970's, a one up from the bottom sort of model.

The Italian threaded shell is likely the result of a rethread due to damage. Another possibility is that it could have been manufactured by ACER-MEX as they used some Japanese frame building materials and some of their bikes came through with Italian threaded shells. One simple thing you could check is the shell width. Italian shells are 70mm, while nearly all asian ones are 68mm. Japan made some production bicycles with 70/71mm shells at one time.

Have no guesses as to who the manufacturer of the frame may have been.

hello juvela! no im not playing the banjo in the video thats a group called black death all stars. im not shure why the pictures dont show. they did when i first put the post up. anyway i uploaded them on my flickr. maybe u can check em out? and thanks for that info i appreciate it!
heres my flickr link. https://www.flickr.com/photos/125914340@N08/

Thank you Raul,

Well the frame is indeed an ACER-MEX product. It would have been sold as a Windsor or as a Carabela. The Windsor model is something called Carrera Sport. It dates from the early 1970's. These bikes have an odd combination of dimensions; an Italian threaded shell and an .833"(!) steerer. The original fork takes a stem with an o.d. of .833".

There is some information on this manufacturer here:

Classic Mexico Cycles

The forum has had a number of threads on your model over the the years. To see them simply use the search function and enter "Windsor Carrera Sport."

Best of luck with your bike.

Thank you so much juvela! I checked out the winsdors on classicredezvous. feels good to finally know the roots of my baby!

Brakes, at least in front, would be highly desirable.

forgot to mention -

importer/distributor was bicycle parts pacific, 5841 mission gorge road, suite a0, san diego, ca 92120.

Certainly bears some Acer-Mex details such as the "fancy" lugs and the serial number stamped on the seat tube, but the fork crown is different from the (typically chrome-plated) forkcrown used on the plain Carrera, and the plain Carrera also came with chrome headlugs.
So if this is a later (or one step UP) Carrera Sport model then you may have something made with at least a few Tange tubes rather than the gaspipe used on the Carrera regular.
I think the forged SunTour dropouts also are a good clue that the tubeset MAY be a slightly better quality than gaspipe.

What an odd duck indeed. Never would have expected Suntour dropouts, Italian threading and a .833" stem were all original specs on one bike. The lugs are interesting, too--sort of clunky versions of fancy lugs.

the lugs employed are nominally an Emilio Bozzi, maker of Frejus/Legnano/Wolsit bicycles, pattern:

as blanks -



after cutting* -



possible that actual maker was Agrati.

information from this web site:

engFrame

----------------
* seat lug in photo is Malaguti style while ACER-MEX used the version with binder ears. it was common at one time for the same Italian seat lug to be offered as either Malaguti style or as binder ears version.