1940 45" Flathead Harley Davidson
1940 45" Flathead Harley Davidson
1940 45" Flathead Harley Davidson
    

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Holthammer Cycles Projects Restoration and Repair Minturn Colorado

1940 45" Flathead Harley Davidson

Owner: Jeff Horvat
Date: 2010-05-22 - 2011-05-14

Jeff disassembled, cleaned and painted the parts. It was brought to HHC to complete the restoration and re-assembly.


2010-05-30 History

This bike is shown here with three generation of the Horvat family aboard it. The above series of pictures are from the first assembly of the bike in the early 1960's. The pile of parts, the completed bike, Jeff's Grandfather, Jeff's Father and Jeff on the bike. Jeff disassembled, cleaned and painted the parts. It was brought to HHC to complete the restoration and re-assembly.

2010-05-30 History
2010-05-30 History
2010-05-30 History
2010-05-30 History
2010-05-30 History
      

2010-05-30 Wheel Build

This was the start of the project that Jeff Horvat first presented HHC. He brought in the rims and hubs painted. He wanted black spokes but we had to settle on stainless because that is all thant can be found for the unique 45 Solo 18" front wheel. In the manual that I had for the 45 Solo, it did not specify an offset for the front wheel only stating to reference another existing laced wheel ... where do I find this? I laced both wheels and trued them. Once the wheels where installed on the bike it was found the the offset for the front wheel was way off. After some searching, I found the correct offset number in another manual.

2010-05-30 Wheel Build
2010-05-30 Wheel Build
2010-05-30 Wheel Build
    

2010-06-20 Top End Job

The engine was not completely disassmebled and only a top end rebuild done. The cylinder were hone and new rings installed. The valves and valve seats freshened up. The cylinders are painted with a flat black high temp paint and heads bead blasted to bring out the aluminum.

2010-06-20 Top End Job
2010-06-20 Top End Job
2010-06-20 Top End Job
2010-06-20 Top End Job
     

2010-07-30 Springer Rebuild

The springer front end was rebuilt with new springs and all new bushings fitted in the rockers. The front end was then fitted to the frame, neck bearings adjusted and wheels mounted. We now have a rolling chassis to work with. When mounting the front wheel it was found that the front brake backing plate had some real issues. A complete disassembely, repaired and reassemble to factory design.

2010-07-30 Springer Rebuild
2010-07-30 Springer Rebuild
   

2011-01-05 Engine & Tranny Install

A little break in the action because of summer service work but the fall of 2010 brought a new focus on this project. Here we installed the engine and tranny but had a small setback on the rear wheel. Prior modifications to the rear axle stays to install a heavier rear axle, the rear axle stays needed to be repaired. This took some time to understand the geometry changes and where the repairs should be made to the frame stay.

2011-01-05 Engine & Tranny Install
2011-01-05 Engine & Tranny Install
2011-01-05 Engine & Tranny Install
    

2011-02-12 Drivetrain & More

The month of January was very eventful in the progress of the bike. The rear wheel got mounted in the frame to make a rolling chassis. The primary drive was assembled, floor boards attached, foot clutch installed with a new pivot bushing machined by Skunk Werks Machining. The generator was placed in the engine and shimmed to give the proper gear lash. The rebuilt Linkart carburetor was installed onto the engine and the ignition coil mounted to the bike. Original style handlebars were purchased as a complete ready to install unit but HHC found a few problems. Because the cable housing were made for a wide variety of Harley’s they were too long for this bike. As I started disassembling the bars, I found two other issues. The throttle side roller ring was missing and the timing side end cap was cross threading.

2011-02-12 Drivetrain & More
2011-02-12 Drivetrain & More
2011-02-12 Drivetrain & More
    

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