NEW build "Dynamo" previously Lady Godiva

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Close up of the rear extender piece now that it has been modified and bolted to the arm (i did have to shave a little off the end to make it slide into the bracket)

20230623_115157.jpg


Here is the springer bracket
If you notice I had to trim off a small part to help it clear the seat post tube
with out doing that I never would have been able to have enough drop in the rear for the desired stance
I will be drilling a hole in the seat post tube so I can attach the top end area of the attachment

20230623_115145.jpg


Extended view to see how the 2 parts line up with the frame

20230623_115243.jpg


Here you can see that the arms of the attachment will be running on the outside of the frame

20230623_115417.jpg
 
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Getting the new bb ready to attach to frame
Its off the Columbia double eagle tandem that I cut up last year

20230626_162619.jpg


One of the best parts about this particular bb is it only has one small hole where the seat tube was originally attached
I will use that as the initial location area where it will be bolted to the frame followed by two other u-bolts that will keep that bb in place no matter how hard I peddle
just need to drill the hole right in that center bar between the two frame rails
20230626_162700.jpg


On another note this is the sissy bar i will be using
lots of bolt locations to use in order to get proper look and riding position


20230626_162906.jpg
 

BobbyStillz

Any development on this sweet ride?

Unfortunately no
been busy with a few things one of them being a new part acquisition for a different bicycle that i want to immediately start working on

meet Dynamo
a Stelber Jet Streak
20230714_162900.jpg


20230714_162924.jpg


I Bought this bike a few years back because i really like the stelber designed frame
look at this lower frame design it just screams early boadtrack style

20230714_163019.jpg


But it was the purchase of a Dana 3 speed transmission that happened to be only 25 miles away and in my price range so i will be dedicating these last 2 weeks to hopefully getting this built up

20230714_164047.jpg
 
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My idea with dynamo is to turn the dana into a jackshaft and place it into the area of the bend in order to replicate the look of a motor on a vintage boardtracker

for anyone who is curious the bottom bracket uses standard 5/8 bearings with a cotter pin crank

20230717_131158.jpg


The kit for installing the dana requires a standard American sized bottom bracket so i will be needing a new axle to turn it into a jackshafr

The dana 3 speed isn't light one huge plus for making the dana into a jackshaft is the original crank and arms are almost half the weight of the entire dana transmission not to mention its part of the rotational assembly so that's quite a reduction
even if I will be adding weight to make a mounting system

20230717_131428.jpg


I am trying to keep the majority of bike original but one thing that will be upgraded is the seat post
original is a quill style and is being replaced with this lucky 7 style quill seat post
unfortunately I don't remember how or where it was acquired

20230717_130541.jpg


I also had these truss rods from another fork that was bolted on
now i can keep the original stelber fork but turn it into a fork that mimics the boadtrack style

20230717_125427.jpg



Here is Dynamo with the truss rods installed
The original hbars flipped
and the upgraded seatpost added

20230717_144134.jpg
 
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Since I am using the dana as a jackshaft I need to find out what the actual gear ratios are
I found some info only stating how much percentage over or under standard drive the gears where but unfortunately that isnt enough info to help me

20230718_163341.jpg


I installed the dana on a standard schwinn frame with a 20t rear coaster and counted the rotations of the rear wheel

Using the stelber as a base with a 20t rear coaster here is what I found

Base stelber with 46t sprocket & 20t rear coaster = 2.3 to 1 ratio (2.3 rotations)

1st gear is equivalent to a 2.9 to 1 ratio
2nd gear is equivalent to a 2.3 to 1 ratio
3rd gear is equivalent to a 1.7 to 1 ratio

I will be revealing why this is important to me in a future post
 
Ordered some of these nickson 1" air tube clamps from O'Rielly auto to mount the dana to the frame
20230720_154729.jpg


Here is the rough mockup with 5 clamps lined up with the bolts from the dana
just need to get either get some steel plate or steel square tube to use for attaching
I want to try and use 4 since i feel it has the look of the boardtrack frame/motor mounts
but the dana without the crank and arms weighs almost 6lbs
so I may need to use a 5th mounting area
btw the crank weighs 1.7lbs and the arms weigh 2.7
that 3 speed if I was to run it altogether is over 10lbs

20230720_155615.jpg


1921-Harley-Davidson-Single-Cylinder.jpg


Found a 48t sprocket that I like the look of to run on the coaster brake (more on that later)

20230720_155935.jpg


I plan on attaching it using this beat up sprocket just need to do some modifying 1st

20230720_160035.jpg


this is a mockup with the rear sprocket and possible mounting location for the old chainguard

20230720_155839.jpg
 
You are coming in fast down the home stretch with some cool custom touches!

Just fyi, in case you missed it.... the BO 18 ends on July 31 this year, not Sept as in recent years. New "4 Build Off" format per year now in vogue!
 

OddJob

You are coming in fast down the home stretch with some cool custom touches!

Just fyi, in case you missed it.... the BO 18 ends on July 31 this year, not Sept as in recent years. New "4 Build Off" format per year now in vogue!

Thanx 4 the heads up one of the other reasons I decided to go with this build at such a last minuet is that since everything is bolt on and I am trying to keep it as original as possible
I can simply switch out the dana setup and go back to a stock drivetrain and just post the bike in a basic setup
although the name of the bike will not make as much sense since I used a name that had something close to dana
hence the name DYNAmo
other options where dynamite and dynamic
but I have 7 days from today to get the dana to work


In case anyone is interested in the how I figured out what rear sprocket size to use
I used evolventdesign.com online converter to help

here is the baseline 46 x 20 original stelber drivetrain


Screenshot_20230721-074741_Chrome (3).jpg

Screenshot_20230721-074746_Chrome (3).jpg



This is the result after determining what the gears in the dana are equivalent to

1st gear equivalent to 58 x 20

here is the cart after inputting all the sprocket sizes

Screenshot_20230714-182930_Chrome (2).jpg

Screenshot_20230714-182936_Chrome (2).jpg



2nd gear equivalent to 46 x 20


Screenshot_20230721-074643_Chrome (2).jpg

Screenshot_20230721-074651_Chrome (2).jpg



3rd gear equivalent to 34 x 20


Screenshot_20230721-074707_Chrome (2).jpg


Screenshot_20230721-074716_Chrome (2).jpg
 
This is a very cool build. I really like the way you are using the Dana to give it the look of an antique motor bike. Nice!
 
Ordered some of these nickson 1" air tube clamps from O'Rielly auto to mount the dana to the frame
View attachment 241905

Here is the rough mockup with 5 clamps lined up with the bolts from the dana
just need to get either get some steel plate or steel square tube to use for attaching
I want to try and use 4 since i feel it has the look of the boardtrack frame/motor mounts
but the dana without the crank and arms weighs almost 6lbs
so I may need to use a 5th mounting area
btw the crank weighs 1.7lbs and the arms weigh 2.7
that 3 speed if I was to run it altogether is over 10lbs

View attachment 241908

View attachment 241914

Found a 48t sprocket that I like the look of to run on the coaster brake (more on that later)

View attachment 241916

I plan on attaching it using this beat up sprocket just need to do some modifying 1st

View attachment 241917

this is a mockup with the rear sprocket and possible mounting location for the old chainguard

View attachment 241915
Love those Dana goods!
 
Since I am using the dana as a jackshaft I need to find out what the actual gear ratios are
I found some info only stating how much percentage over or under standard drive the gears where but unfortunately that isnt enough info to help me

View attachment 241604

I installed the dana on a standard schwinn frame with a 20t rear coaster and counted the rotations of the rear wheel

Using the stelber as a base with a 20t rear coaster here is what I found

Base stelber with 46t sprocket & 20t rear coaster = 2.3 to 1 ratio (2.3 rotations)

1st gear is equivalent to a 2.9 to 1 ratio
2nd gear is equivalent to a 2.3 to 1 ratio
3rd gear is equivalent to a 1.7 to 1 ratio

I will be revealing why this is important to me in a future post

Here is some info that I have on the Dana. I think I got this from @Dbubbleguy years ago. Hope it helps.

124017394_4103127753036315_5602049773100502630_o.jpg
Dana_1.jpg
Dana_2.jpg
Dana_3.jpg
Dana_4.jpg
Dana_5.jpg
Dana_6.jpg
Dana_7.jpg
Dana_8.jpg
Dana_9.jpg
 
Ordered some of these nickson 1" air tube clamps from O'Rielly auto to mount the dana to the frame
View attachment 241905

Here is the rough mockup with 5 clamps lined up with the bolts from the dana
just need to get either get some steel plate or steel square tube to use for attaching
I want to try and use 4 since i feel it has the look of the boardtrack frame/motor mounts
but the dana without the crank and arms weighs almost 6lbs
so I may need to use a 5th mounting area
btw the crank weighs 1.7lbs and the arms weigh 2.7
that 3 speed if I was to run it altogether is over 10lbs

View attachment 241908

View attachment 241914

Found a 48t sprocket that I like the look of to run on the coaster brake (more on that later)

View attachment 241916

I plan on attaching it using this beat up sprocket just need to do some modifying 1st

View attachment 241917

this is a mockup with the rear sprocket and possible mounting location for the old chainguard

View attachment 241915


This is gonna look so wicked. Keep building and cross the finish line! I want to see this baby!!!
 
Love the chain guard up high like that!

No time to waste so I'm compelled to suggest that you check the chain line before you get too far into mounting the Dana. Right now it's looking like it will pass right where the frame crosses the tire. :39:
 

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