Yes!!!
The start:
Last edited:
SWB0 Vertigo Granny
- Thread starter BartRidesEternal
- Start date
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Yes!!!
The start:
Thanks to the idea from @ingola , I decided to give it a go. Granny is out of retirement!
This evening I got the bike in pieces in about half an hour.
I can't imagine this going to the scrapyard... the bike rides great (rear tire empties very slowly), nothing is worn or rusted badly.
Everything came of easy and the bottom bracket bearing turns perfectly smooth.
Pictures:
Smooth
Lets Goo!!
Clean threads! Like new.
Perfectly rusted cone. Time's signature.
Flipped frame!!
Looking good.
I have this lying about. USA bottom bracket pot.
And cranks!
I have some neat ideas and no plans regarding looks yet. I'll let it evolve.
This evening I got the bike in pieces in about half an hour.
I can't imagine this going to the scrapyard... the bike rides great (rear tire empties very slowly), nothing is worn or rusted badly.
Everything came of easy and the bottom bracket bearing turns perfectly smooth.
Pictures:
Smooth
Lets Goo!!
Clean threads! Like new.
Perfectly rusted cone. Time's signature.
Flipped frame!!
Looking good.
I have this lying about. USA bottom bracket pot.
And cranks!
I have some neat ideas and no plans regarding looks yet. I'll let it evolve.
I knew it would look wicked
Oh, leave the crank where it is, add a second frame on top and have a tall bike!
I thought about that and then I looked in my shed for spaceOh, leave the crank where it is, add a second frame on top and have a tall bike!
Could not help myself.
Never let these cranky builders near cranks!
Velosteel/Torpedo leftover drivers (bearing races were shot) and two JIS crank pieces.
Plans, trust me.
So I found some unused bike tires on a marketplace for this bike:
"Tannus Aither 1.1" in a 'cotton white' colour.
Really excited since they are 'normally' pretty expensive. And I can get an idea for the 'outward force on the rims' to see if these are OK for my 1940 wooden rim set I have lying on the attic for another project.
Picture of a black tire (not mine):
Just some more thoughts and notes I'm meditating on regarding Granny:
"Tannus Aither 1.1" in a 'cotton white' colour.
Really excited since they are 'normally' pretty expensive. And I can get an idea for the 'outward force on the rims' to see if these are OK for my 1940 wooden rim set I have lying on the attic for another project.
Picture of a black tire (not mine):
Just some more thoughts and notes I'm meditating on regarding Granny:
- At this point, I can build it with leftover scraps. I might buy some parts second hand or new like bearings, tires and grips.
- The idea is to keep the budget as tight as possible. I will let you know how much I spent on this project.
- I currently do not like the white frame colour, but I'll clean it first. I have many many spray cans in my shed.
- I might spray paint the rims too.
I did'nt have a JIS square taper shaft spare, so I made my own tool.
Sheldon brown said 'two degrees'.
Fits like a glove!
That sound when the machine goes ON, fits perfectly in a 'Fear Factory' song.
Spanning and aligning the driver.
I remember RRB likes sparks!
Perfect fit.
Four degree conical/tapered fit.
Now I need to think about loctite 602 (with a little fine sand) and a press or welding it.
These parts fit on a stock JIS square taper shaft and a push-on three slot sprocket will fit perfectly.
Stay tuned to see where this is going
This gon' be awesome!
If I'm guessing right this will become some overengineered completely bonkers but awesome contraption...These parts fit on a stock JIS square taper shaft and a push-on three slot sprocket will fit perfectly.
Stay tuned to see where this is going
This gon' be awesome!e
Why a 4° conical fit, instead of a straight press or shrink fit? I'm just learning about some of this stuff so curious. I have a small little old Craftsman 6x18 lathe bought off a coworker and I need to get it up and running, this is inspiration!
Let's see...cog driver with a square taper...my guess is some sort of layshaft. Will be easy to swap around ratios! And you mention chain tensioning, so I suppose it'll go into an eccentric maybe, for managing tension to the crankset's chainwheel...which must be on the left unless you're flipping the rear wheel too.....this is going to be wild.
Let's see...cog driver with a square taper...my guess is some sort of layshaft. Will be easy to swap around ratios! And you mention chain tensioning, so I suppose it'll go into an eccentric maybe, for managing tension to the crankset's chainwheel...which must be on the left unless you're flipping the rear wheel too.....this is going to be wild.
Who do I talk to about getting a "totally confused" emoji added to our list? 
I like it. Flipped like that, it looks almost like a 2 bar swing bike.
*Laughs hysterically* Yes!If I'm guessing right this will become some overengineered completely bonkers but awesome contraption...
Thank you! Yes it will.
Thank you, I appreciate it.
The main reasons I went for a tapered fit are: Firstly, if you see the measurements of the original parts (post #6), I could not simply make them cilindrical in the lathe. The only diameter overlap is around 27mm, but then I would have a very small contact surface if you know what I mean.
(Let me know if you want a visual representation of my explanation, happy to help).
The second reason is, that conical pressed fittings are incredibly tight. I wanted the sprockets to be able to take the newtonmeter punishment.
Who do I talk to about getting a "totally confused" emoji added to our list?
That is not a bad idea...! Thanks!
Pictures below: Can you see where I'm going with this?
Build title: Chainz is plural
I pressed the parts together with loctite 601 and a line of fine grit. Checked if it still turns without wobbling. If loctite doesnt do the trick, I will weld it.
There will be a seatpost welded on this spot, so the chain will rotate close to the seat.
So I wanted to remove the bottom bracket bearing and shaft so I could clean and prepare for paint.
But the plastic teeth were dry and instantly broke off...
Then the next option is fire:
I got it out, need to carefully clean the bb threads.
Looks as if my thoughts were heading in the right direction...
...I love everything about your plan!
...I love everything about your plan!
Thank you!Looks as if my thoughts were heading in the right direction...
...I love everything about your plan!
Solid rubber tires, bottom bracket, chains and sprockets are on its way to my house.
These tires are new and cost 70 euros a piece usually. I got them both for 40 euros, so very happy with that.
Funny how I never would have built a bike in the direction its going, but I enjoy the flow and where it is heading!
I was hoping you were going this way loved where the chain guard was when you first flipped the bike*Laughs hysterically* Yes!
Thank you! Yes it will.
Thank you, I appreciate it.
The main reasons I went for a tapered fit are: Firstly, if you see the measurements of the original parts (post #6), I could not simply make them cilindrical in the lathe. The only diameter overlap is around 27mm, but then I would have a very small contact surface if you know what I mean.
(Let me know if you want a visual representation of my explanation, happy to help).
The second reason is, that conical pressed fittings are incredibly tight. I wanted the sprockets to be able to take the newtonmeter punishment.
That is not a bad idea...! Thanks!
Pictures below: Can you see where I'm going with this?
Build title: Chainz is plural
I pressed the parts together with loctite 601 and a line of fine grit. Checked if it still turns without wobbling. If loctite doesnt do the trick, I will weld it.
View attachment 255679
View attachment 255680
View attachment 255681
There will be a seatpost welded on this spot, so the chain will rotate close to the seat.
So I wanted to remove the bottom bracket bearing and shaft so I could clean and prepare for paint.
But the plastic teeth were dry and instantly broke off...
Then the next option is fire:
View attachment 255682
I got it out, need to carefully clean the bb threads.
MattiThundrrr
Rattus All Terrainus
I would be scared of having two sets of rotating teeth in this area
Mattie your thinking to much again
MattiThundrrr
Rattus All Terrainus
franksnbeans, franksnbeans...
