Heavy Duti questions

[coasterbrakejunkie1969]

I recently completed a search for an early Heavy Duti with a successful purchase of a1965 Heavy duti from fellow Caber genesmachines Thanks Gene. I have yet to receive it but had some questions about the bike. I have read that the HD has a reinforced frame, what exactly does that mean? I think it has a HD kickstand,heavy guage spokes and front hub. Is there any other difference from regular mid weight frame and the HD. I can not be more pumped to get my hands on it , that will be soon. Any and all help is appreciated.

 

[Xlobsterman]

I recently completed a search for an early Heavy Duti with a successful purchase of a1965 Heavy duti from fellow Caber genesmachines Thanks Gene. I have yet to receive it but had some questions about the bike. I have read that the HD has a reinforced frame, what exactly does that mean? I think it has a HD kickstand,heavy guage spokes and front hub. Is there any other difference from regular mid weight frame and the HD. I can not be more pumped to get my hands on it , that will be soon. Any and all help is appreciated.

A Heavy Duty did not have any special frame. It was built on a standard middleweight frame with wheels that had .105ga spokes making the wheels stronger giving it the capacity to carry heavier loads like a paperboy would be carrying back in that era. They may have also been marketed more towards commercial institutions where a stronger bike may have been needed.

The Schwinn Heavy Duti | 1965 to 1983

Vintage Schwinn Heavy Duti were made from 1965 to 1983. This page shows images and text from old catalogs of this classic bicycle.

bikehistory.org

 

[Kickstand3]

here’s on I use as a warehouse bike

 

[coasterbrakejunkie1969]

A Heavy Duty did not have any special frame. It was built on a standard middleweight frame with wheels that had .105ga spokes making the wheels stronger giving it the capacity to carry heavier loads like a paperboy would be carrying back in that era. They may have also been marketed more towards commercial institutions where a stronger bike may have been needed.

The Schwinn Heavy Duti | 1965 to 1983

Vintage Schwinn Heavy Duti were made from 1965 to 1983. This page shows images and text from old catalogs of this classic bicycle.

bikehistory.org

I noticed some of the bikes posted had a CT forged crank and mentions forged stem. I see some cranks with CT marking are they different from regulal Scwinn cast crank? Is there a difference in the stem? I love that yellow but it was not an option in '65, I have taken to painted fenders as of late so I going to keep it red.

 

[irideiam]

A Heavy Duty did not have any special frame. It was built on a standard middleweight frame with wheels that had .105ga spokes making the wheels stronger giving it the capacity to carry heavier loads like a paperboy would be carrying back in that era. They may have also been marketed more towards commercial institutions where a stronger bike may have been needed.

The Schwinn Heavy Duti | 1965 to 1983

Vintage Schwinn Heavy Duti were made from 1965 to 1983. This page shows images and text from old catalogs of this classic bicycle.

bikehistory.org

Not correct. The HD frames starting in 1964 have extra welding where the cantilevers meet the frame at the seat tube(some years) and down tube. Around this time they also started using the CT stamped cranks which were heat treated for extra strength.

 

[Xlobsterman]

Not correct. The HD frames starting in 1964 have extra welding where the cantilevers meet the frame at the seat tube and down tube. Around this time they also started using the CT stamped cranks which were heat treated for extra strength.

No special distinction on the frames in the dealer catalogs! The Typhoon, Heavy Duti, Klunker, and the Spitfire all used the same frames!

BTW, the cantilever frames themselves were considered to be a "HEAVY DUTY" frame!

 

[irideiam]

If you look at the earlier dealer catalogs they have different part numbers.

 

[Xlobsterman]

If you look at the earlier catalogs they have different part numbers.

And lets see the part number for the Typhoon from that same year.........

 

[irideiam]

Just posted it! What's the point the frames are different. All the way up to the yellow ones in 80, which is the year of the one above I posted. If you owned one you'd agree! I have owned at least 20 over time and the only HDs without the extra welds were the '61-'63 American Heavy Duty's

 

[Xlobsterman]

Just posted it! What's the point the frames are different. All the way up to the yellow ones in 80, which is the year of the one above I posted. If you owned one you'd agree! I have owned at least 20 over time and the only HDs without the extra welds were the '61-'63 American Heavy Duty's

I own one, and assembled many over the years when working at the shop. I see no physical difference in the frames on my Typhoon, Spitfire, Klunker, or Heavy duti.........!