FIRE WOMAN

Rat Rod Bikes Bicycle Forum

Help Support Rat Rod Bikes Bicycle Forum:

kingfish254

CHECK OUT MY SALE THREAD FOR COOL STUFF!
Pro Member
Joined
Aug 31, 2009
Messages
31,732
Reaction score
39,157
Location
Historic Savannah
Egghead Junior would be proud of your cipherin skills.

egghead.jpg
1659490429035.png
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
Dawned on me the other day that i could use the middle section from the rear legs of the exercise bike
20220804_123602.jpg


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
20220804_130252.jpg


And here is that middle piece mocked up to the seat / mid drive attachment
20220804_130210.jpg
 

Attachments

  • 20220804_130210.jpg
    20220804_130210.jpg
    2.8 MB · Views: 0

kingfish254

CHECK OUT MY SALE THREAD FOR COOL STUFF!
Pro Member
Joined
Aug 31, 2009
Messages
31,732
Reaction score
39,157
Location
Historic Savannah
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
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
20220811_170237.jpg



Also picked up what I will be using for the bb
It's 2 x 2 exhaust connector bought at any local auto store
20220811_170617.jpg


It's about an inch wide so I willneed to take off about a half inch on both ends

20220811_171252.jpg



I plan on bolting it right next to the seat clamp
The center indent really helps to properly align the new bb
20220811_170802.jpg
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
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
20220819_092731.jpg


Here you can see the small clearance of the brake arm compared to the large sprocket
And if you look bellow the sprocket you can see the dust cap that I had to grind down to work
20220819_093700.jpg
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
Considering using this piece (cut in 2) from the exercise bike to add a bit more bracing
20220823_124000.jpg



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
20220823_124132.jpg
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
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
20220826_073631.jpg


My plan Is to bolt the bracket on to the bb
In theory it should clear the crank but if not I can always resort to welding it on
This piece is to be used as a secondary attachment to the seat post clamp
20220826_073750.jpg



Also drilled out an area to run a bolt so the 48 tooth sprocket will attach to the sprocket on the tandem coaster
20220826_074032.jpg
 

kingfish254

CHECK OUT MY SALE THREAD FOR COOL STUFF!
Pro Member
Joined
Aug 31, 2009
Messages
31,732
Reaction score
39,157
Location
Historic Savannah
Everytime I check in on this cool build, this is what I think of. Keep wrenching away! I love it.

1661534988291.png
1661535065958.png
1661535039644.png
1661535124944.png
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
A bit of bad new over the weekend
I discovered a Crack in coaster hub right where the extra cog is welded
Not sure if it is a old crack or newly developed when I was modifying the cog
Rather than take a chance I have decided to go back to a simpler design for Fire woman
At least I have a week and a backup plan

20220829_165254.jpg
20220829_165056.jpg


I can either go to a simple standard drive with the vintage chainguard
Or a southpaw freewheel with the exercise chainguard modified to mimic the vintage guard
20220829_164447.jpg


I also need to decide if I want to use the strait seat post part
Or a 90 degree bend
20220829_164509.jpg
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
Been really trying to make this bike a left side drive but It may turn out to not have enough time to do the plan B before the deadline
In the meantime I decided on going with the exerciser seat post holder
The 90 bend would be problematic if not done straight
This gives me some room for error
20220901_180224.jpg


I also forgot to show the new bb fully bolted up
20220901_180235.jpg

20220901_180308.jpg

The bb consists of a 2 x 2 exhaust connector
2" exhaust u bolts
And the top piece used to be a flush ring pull from a hardware store
It turned out to be the strongest 3 x 3 piece of metal that after I cut the ends would also fold best over the frame
20220901_134655.jpg
 

kingfish254

CHECK OUT MY SALE THREAD FOR COOL STUFF!
Pro Member
Joined
Aug 31, 2009
Messages
31,732
Reaction score
39,157
Location
Historic Savannah
More great bracketology.
Get this put together!!!
 
Joined
Jun 5, 2012
Messages
536
Reaction score
1,574
Ended up going with a standard coaster brake rear wheel 26 x 1 3/8 (590) whitewall
Since the fender is a middleweight I couldn't do a 26 x 2.125
The only other rear I could have tried was a 700 to kick up the rear higher
But I didn't have one ready to go with a coaster braje
Kept the columbia/westfield chainguard in the normal position
I just Couldn't decide which type of braking system to go with to run a left side drive setup
Also never got a chance to find out if running a 22" (457) front wheel and tire would level out the tank as opposed to running a taller rear wheel
Kept the og 26" fork with a 24 wheel with a 24 x 1.75 front whitewall
Fw0.jpeg


I was able to flip the majority of the og parts from the fire arrow
Frame flipped
Tank flipped
Hbars flipped
Front fender mounted on rear
Unfortunately the drive train is still on the normal side
Maybe in the future I can run it on the left
 
Last edited:

Captain Awesome

👑 Lord of Irrelevance
Staff member
Moderator
Pro Member
Joined
Aug 9, 2012
Messages
5,727
Reaction score
10,457
Location
Da beach
Ended up going with a standard coaster brake rear wheel 26 x 1 3/8 (590) whitewall
With the columbia/westfield chainguard in the normal position
I just Couldn't decide which type of braking system to go with to run a left side drive setup
Also never got a chance to find out if running a 22" (457) front wheel and tire would level out the tank
Kept the og 26" fork with a 24 wheel with a 24 x 1.75 front whitewall
View attachment 208321

I was able to flip the majority of the og parts from the fire arrow
Frame flipped
Tank flipped
Hbars flipped
Front fender mounted on rear
Unfortunately the drive train is still on the normal side
Maybe in the future I can run it on the left
Dripping with cool
 
Joined
May 9, 2020
Messages
696
Reaction score
2,700
Been really trying to make this bike a left side drive but It may turn out to not have enough time to do the plan B before the deadline
In the meantime I decided on going with the exerciser seat post holder
The 90 bend would be problematic if not done straight
This gives me some room for error
View attachment 207362

I also forgot to show the new bb fully bolted up
View attachment 207360
View attachment 207365
The bb consists of a 2 x 2 exhaust connector
2" exhaust u bolts
And the top piece used to be a flush ring pull from a hardware store
It turned out to be the strongest 3 x 3 piece of metal that after I cut the ends would also fold best over the frame
View attachment 207364
Genius bracket work!💪🤓
 
Top