Work Dragonman Does in the Machine Shop

Published on November 12, 2024
Duration: 5:05

Dragonman details various motorcycle engine and transmission rebuild services, focusing on Harley-Davidson Panhead and Shovelhead models. He explains the scope of work for lower-end rebuilds, including rod and bearing replacement, cam bushing work, and flywheel balancing. The video also covers transmission rebuilds, particularly rotary top four-speed units, and mentions stroker motor builds with specific piston types and costs.

Quick Summary

Dragonman's machine shop specializes in rebuilding Harley-Davidson Panhead and Shovelhead engines, covering work from 1936 to 1999. Services include lower-end rebuilds with new bearings and balanced flywheels, as well as rotary top four-speed transmission overhauls.

Chapters

  1. 00:00Introduction & Panhead Lower End Rebuild
  2. 00:52Shovelhead Motor Rebuilds & Service Range
  3. 01:09Rotary Top Four-Speed Transmission Rebuild
  4. 01:34Indiana Customer's Motor Drop-off & Pickup
  5. 02:02California Stroker Motor Build & Costs
  6. 02:25Transmission Rebuild & Rocker Arm Service
  7. 02:40Cylinder Head Rebuild Details
  8. 02:51Rebuild Your Own Motor Deal
  9. 03:02Assembling Your Own Motor vs. Shipping
  10. 03:23Complete Lower End Rebuild & Flywheel Shaving
  11. 03:36Compression Increase Techniques
  12. 03:56Rocker Arm & Ring Service
  13. 04:10Price Comparison & Value
  14. 04:25Shipping Advice & Contact Information

Frequently Asked Questions

What types of Harley-Davidson engines does Dragonman service?

Dragonman services a wide range of Harley-Davidson engines, specifically mentioning work on Panhead and Shovelhead models. His service range covers motors from 1936 up to 1999, indicating extensive experience with classic and older Harley-Davidson powertrains.

What is involved in a Panhead lower end rebuild?

A Panhead lower end rebuild includes addressing rebuilt rods, installing new bearings, replacing the cam bushing, line boring the main races, and balancing the flywheels for optimal engine performance and longevity.

How can compression be increased in a motorcycle engine without expensive pistons?

Compression can be increased by removing material from the cylinders or fly-cutting the cylinder heads. For every 0.050 inches of metal removed from either the cylinder or head, approximately 1.5:1 compression can be gained.

What is the difference between a rotary top and a ratchet top transmission?

A rotary top transmission is identified by its specific top cover design, distinguishing it from a ratchet top transmission. Both are typically four-speed units used in classic motorcycles.

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