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Erector set style bicycle That might be an interesting idea to manufacture Multi way customizable frames Plus lotsa speed holes Ironically I grew up more with legos i dont think erector sets where much of an 80's kids toy

More work done on the bb Cut up the remaining part from the bracket to bolt on the bb (prefer to stick to bolt on only if possible) As well as cut out an area in the middle to slide bracket piece into My plan Is to bolt the bracket on to the bb In theory it should clear the crank but if not I...

Considering using this piece (cut in 2) from the exercise bike to add a bit more bracing Noticed a good spot where the curve of the brace matches up with the fender to somewhat hide the bracing May be able to get rid of the straight bar braces but not sure until I actually see it bolted up

Slow day at work so I was able to slim down the exhaust connector 1/2 inch on each side Now I can work on bolting it up as the new bb for the frame

Adapter after redrill is able to clear now Doesn't look like it in pic but you can see how much play forward and back on the drop outs that it has now With and without chainguard Brace on outside currently to hold chainguard in place currently

Haven't drilled the new holes to put back the coaster /seat adapter But I did try a mock up with a 24" as well as a 24" tire with 24" fork I think I need to try 20" Or go taller in the rear Not sure if that will work with the fender can try once adapter is back on

Got more of the brackets drilled and mounted along with the tandem coaster Unfortunately I discovered that I'm about an inch to far back with the main adapter The coaster is hitting the fender Also I was using tire and wheels off another bike I think I need a 24" on the front Here you can...

Yeah a different rack for sure something from a middle weight bike Schwinn Sears

Wow I wasn't expecting you to pull out a big n little combo Very nice really works with that flying star frame This may sound a bit crazy but I think a rear rack would look so good on your bike So many horizontal lines but the back seems so plain

I really like how the beehive springer matches the ribbing on the finned aluminum tank Any chance you have some vintage white rims with a patina that matches the rest of the white I think those would look awesome with that jerald slick

Here we are with the top 1/2 bolted up

Picked up the bolts nuts and washers I needed for the seat / coaster attachment Just need to widen the holes In case anyone is curious the washers that fit into the bb bearing cups are listed as 5/8 outside diameter is 1 3/4 Also picked up what I will be using for the bb It's 2 x 2 exhaust...

Dawned on me the other day that i could use the middle section from the rear legs of the exercise bike You can see where I made the cuts at Here is the piece mocked up to the fram I need to make that reab hole just a bit bigger so that it can fit into the bb area And here is that middle...

DID A BIT MORE HACKING DETERMINED THIS WAY WAS THE BEST WHEN ATTACHING THE 2 MAIN PIECES JUST NEED TO GET THEM WELDED AT SOME POINT

BEEN WORKING ON FIGURING OUT THE GEAR RATIO SET UP BEFORE I GOT TO FAR INTO THE BUILD AFTER GOING ON A NUMBER OF WEBSITES TO FIGURE OUT HOW TO CALCULATE COMPUND GEAR RATIO I BELIVE I HAVE FIGURED OUT WHAT WILL WORK I USED THIS SITE TO DOUBLE CHECK MY CALCULATIONS...

SINCE I WILL BE CUTTING UP THESE 2 COLUMBIA FRAMES TO GET PARTS FOR MY RRBO CLASS 1 BUILD FIRE WOMAN I HAVE DECIDED TO BUILD A MOTOBIKE INSPIRED STYLED FRAME USING A COLUMBIA EXERSISE BIKE AND A DOUBLE EAGLE TANDAM THAT I ORIGINALY PLANNED TO TURN INTO A STRETCH BIKE HERE IS WHAT I AM STARTING...

FINIALLY GOT AROUND TO CUTTING UP SOME OF THE PARTS I NEEDED NEXT STEP DRILLING

HARD TO SAY FOR SURE BUT I'M THINKING THAT FENDER IS FROM A 50'S COLUMBIA IF IT IS THAT WOULD PERFECTLY BALANCE OUT HAVING A COLUMBIA SPRINGER ON THE FRONT TOO BAD IT WASNT A FRONT FENDER THOSE ALREADY HAVE THAT PERFECT "BOBBED" LOOK WITHOUT MUCH MODIFYING YOU CAN SEE HOW ONE LOOKS ON MY RRBO...

OVER THE WEEKEND I WAS ABLE TO DRILL THE HOLE IN THE BB JUST NEEDS TO BE CLEANED UP NOW I CAN WORK ON MOUNTING THE EXRSICE FORK AND HOPEFULY GET IT UP AND READY FOR TEST RIDES IN JULY ALSO WAS ABLE TO REMOVE THE COLUMBIA KICKSTAND TOO ALSO PICKED UP THESE WHITE RIMS AT THE POMONA CAR SWAP...

DUG OUT THIS OLD COLUMBIA TANDEM PROJECT "THAT I WAS ORIGINALY GOING TO MAKE INTO A STRETCH BIKE" TO SEE IF IT HAD ANY PIECES I COULD USE ON FIRE WOMAN ABOUT THE ONLY PART I CURRENTLY THINK I CAN USE IS THE MIDDLE BRACE BARS FROM THE REAR THEY SHOULD WORK AS A SECONDARY ATTACHEMENT POINT ON...