Dragster Low Slung Chopped Bike *Recumbent Seat* 1969 HowTo build PLANS
PHP 626.69
Bicycle Plans
Bicycle Bike Pick-up Trailer How-To build PLANS 300lb Payload
PHP 396.50
UNICYCLE HowTo Build PLANS from junk bike + Riding INFO
PHP 517.35
1917 Shaw Motor Attachment “Easy to Make Your Bike a Motorcycle” Motorbicycle
PHP 741.79
1921 Shaw Motor Attachment “Make a Motorcycle of Your Bike~at Little Cost”
PHP 914.43
Motorized Bike Bicycle Conversion 1954 How-To build PLANS
PHP 574.90
Dayton Bicycles 1920 vintage print AD *Ride a Bike*
PHP 626.69
Bike Bicycle Trailer 1934 HowTo build PLANS Newspaper Delivery & Cargo
PHP 402.26
How-To Build a TANDEM BIKE 1960 PLANS Bicycle built for Two
PHP 517.35
Tandem Bicycle Built for Two 1965 How-to build PLANS from old bikes
PHP 396.50
How-To Build a Take-Apart Bike PLANS Bicycle Conversion
PHP 431.03
Power Wheel for Bicycle Bike or Wagon 1953 How-To build PLANS
PHP 454.05
Bicycle Radio Tube Powered 1936 HowTo build PLANS
PHP 517.35
Delta Electric Bicycle Lamp No. 27 & 80 1922 vintage print AD *Spring is Here!*
PHP 741.79
Delta Electric Bicycle Lamp 1922 AD *To Work!*
PHP 741.79
1916 Vitalic Bicycle Tires AD “More Miles Less Money” Continental Rubber Works
PHP 684.24
BICYCLE POWER WHEEL 1953 How-To build PLANS Go-Devil
PHP 454.05
1920 Cycle Trades of America AD Ride a Bicycle Save Money~Save Time~Save Temper
PHP 856.88
1920 Rollaway Power Attachment vintage Full Page AD *A Motor for Any Bicycle*
PHP 1,029.52
Bicycle 1935 vintage pictorial Colson 2 Speed-Delta Gangway Horn & Teacup Light
PHP 741.79
Bicycle Radio Tube Powered 1940 HowTo build PLANS
PHP 459.80
1922 Ace Motorcycle print AD “A new Thrill, A New Pleasure”
PHP 1,259.71
Briggs & Stratton Motor Wheel 1920 vintage Full Page AD “Once Every Hundred Mile
PHP 1,029.52
1922 Shaw Motor Attachment “Make Your Bike a Motorcycle” Motorbicycle
PHP 914.43
Briggs & Stratton Motor Wheel 1920 vintage Full Page AD
PHP 1,029.52
Dayton Bicycles *Military Model in service in France” 1919 print AD Davis Made
PHP 1,029.52
Convert a Tricycle into a Bicycle 1946 vintage How-To build PLANS
PHP 338.95
Steinlaufs Brothers Custom Bikes 1947 vintage pictorial Chicago Freakbikes
PHP 684.24
Bike Bicycle Trailer HowTo build PLANS great Light Delivery
PHP 505.84
Joe Steinlauf Bedstead Bike 1940 vintage pictorial Chicago Freakbikes
PHP 517.35
Briggs & Stratton Motor Wheel 1920 vintage Full Page AD “The New Freedom”
PHP 1,029.52
1921 Rollaway Power Attachment vintage Full Page AD *Avoid the Crush~Hurry Home*
PHP 741.79
1922 Ace Motorcycle print AD “Comfort~Speed~Silence in this Marvelous Motor”
PHP 1,144.62
1920 Vitalic Bicycle Tires AD “Some Tires I’ll Say” Continental Rubber Works
PHP 684.24
"Funny-Cycles...New Fad" 1948 vintage pictorial Custom Bikes Bicycles
PHP 344.71
Bicycle Trailer 1943 HowTo PLANS Hauls Child / Payload / Cargo Plywood/Conduit
PHP 626.69
Bicycle Sidecar Mobile Concession 1935 Design PLAN vintage Hot Dog cart
PHP 454.05
1920 Vitalic Bicycle Tires AD “Cost More to Buy But Less to Ride” Continental
PHP 684.24
1912 American Motorcycle and Bicycle vintage print AD A.J. Musselman
PHP 1,259.71
1920 Haverford Cycle Black Beauty Bicycle AD $1 a week pays for the Black Beauty
PHP 1,029.52
Wooden Bicycle 1943 How-To build PLANS WWII metal shortage
PHP 914.43
1948 WHIZZER Bike Motor Engine vintage AD
PHP 517.35
Child size Rickshaw Style Bicycle Trailer How-To build PLANS
PHP 344.71
1916 Shaw Motorbicycle “A Superior, Easy Running, Dependable Power Bike"
PHP 1,144.62
Chariot & Lion Cage Circus Parade Wagon 1956 How-To build PLANS
PHP 287.16
Tricycle Bike Trailer Teardrop 1950 How-To build PLANS
PHP 454.05
Bicycle Bike Camping Trailer 1935 HowTo build PLANS Telescoping Bed
PHP 626.69
1919 Shaw Motor Attachment “Make Your Bike a Motorcycle in a Jiffy” Motorbicycle
PHP 741.79
About us
Grandpa's Secrets
Discover a Wealth of How-to Projects & Plans from a Bygone Era.
Explore our Scientific & Mechanical History in Vintage Hobby, Craft, & Technical Magazine Articles.
When ordering multiple items please combine them in the shopping cart for the best shipping rate, or contact us for an invoice.
Discover a Wealth of How-to Projects & Plans from a Bygone Era.
Explore our Scientific & Mechanical History in Vintage Hobby, Craft, & Technical Magazine Articles.
When ordering multiple items please combine them in the shopping cart for the best shipping rate, or contact us for an invoice.
Seller feedback (25,724)
a***5 (332)- Feedback left by buyer.
Past month
Verified purchase
Exactly as posted.
a***5 (332)- Feedback left by buyer.
Past month
Verified purchase
Exactly as posted
r***k (77)- Feedback left by buyer.
Past month
Verified purchase
Very interesting! Thank you for the quick shipping!!
b***a (1594)- Feedback left by buyer.
Past month
Verified purchase
Fast and easy!
Thanks!
s***2 (845)- Feedback left by buyer.
Past month
Verified purchase
Smooth transaction as described thank you
a***a (367)- Feedback left by buyer.
Past month
Verified purchase
Great article