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MELVIN CHAIN TENSIONER

Want to build a single speed without having to buy a dedicated frame? Try the Melvin. The Melvin bolts to the frame where the rear derailleur would normally go and allows the use of a single speed rear wheel on bikes with vertical dropouts.

TECHNICAL INFORMATION

Material - 6061 Aluminum
Weight - 108g
Finish
Anodized
Anodized Color
Black, Purple, Blue, or Silver
Chainline Range for 135/142 Rear Spacing - 44-52mm
Largest Rear Cog - 20 teeth
Chain Wrap - 20 Teeth 

PRODUCT STORY

Vertical dropouts hold the rear axle at a fixed distance from the cranks and nine times out of ten this doesn’t put the rear wheel at the right spot for a single speed drivetrain. The result is a chain that is too loose or too tight. The Melvin takes care of the chain tension and lets you run a single speed wheel on almost any frame with a derailleur hanger.

The Melvin uses two pulleys, just like a rear derailleur, which gives it 20 teeth of chain wrap. This means that the Melvin will work with multiple front chain rings while maintaining proper chain tension. Of course this is no longer a true single speed, but can come in handy when two or three gears are all you need. Twenty teeth of chain wrap means that chain rings with a maximum difference of twenty teeth can be used up front.

The mounting pivot has spacers that can be arranged to adjust the chainline. The Melvin works best, of course, with our hubs, but the chainline spacers allow it to work with most other hubs too. In addition to the pivot spacers, the pulleys have side to side float to quiet slight variances in chainline.

The pulleys are made of extruded and machined aluminum and have sealed bearings for durability. They are 2.25mm thick at the tooth which fits inside most narrow 6 through 9 speed chains, and the pulley cage is wide enough to allow 1/8″ single speed chains as well. Chain tension is optimized when the chain length is cut so that the pulleys are aligned vertically.

We make spare parts available to extend the life of you Melvin. Older models with plastic pulleys can be upgraded with the new sealed bearing pulleys.

  • Installation instructions
  • Paul logo sticker

200BLACK

Paul Components Melvin Chain Tensioner, Single Speed

Ready To Ship In: 2 Days (USA), 3-5 Days (International)
Ships To: Worldwide
Returns: 60 Day Free Returns
Made In: Chico, CA, USA

Colour
black
Silver
Purple
Read Before Ordering

MELVIN CHAIN TENSIONER

Want to build a single speed without having to buy a dedicated frame? Try the Melvin. The Melvin bolts to the frame where the rear derailleur would normally go and allows the use of a single speed rear wheel on bikes with vertical dropouts.

TECHNICAL INFORMATION

Material - 6061 Aluminum
Weight - 108g
Finish
Anodized
Anodized Color
Black, Purple, Blue, or Silver
Chainline Range for 135/142 Rear Spacing - 44-52mm
Largest Rear Cog - 20 teeth
Chain Wrap - 20 Teeth 

PRODUCT STORY

Vertical dropouts hold the rear axle at a fixed distance from the cranks and nine times out of ten this doesn’t put the rear wheel at the right spot for a single speed drivetrain. The result is a chain that is too loose or too tight. The Melvin takes care of the chain tension and lets you run a single speed wheel on almost any frame with a derailleur hanger.

The Melvin uses two pulleys, just like a rear derailleur, which gives it 20 teeth of chain wrap. This means that the Melvin will work with multiple front chain rings while maintaining proper chain tension. Of course this is no longer a true single speed, but can come in handy when two or three gears are all you need. Twenty teeth of chain wrap means that chain rings with a maximum difference of twenty teeth can be used up front.

The mounting pivot has spacers that can be arranged to adjust the chainline. The Melvin works best, of course, with our hubs, but the chainline spacers allow it to work with most other hubs too. In addition to the pivot spacers, the pulleys have side to side float to quiet slight variances in chainline.

The pulleys are made of extruded and machined aluminum and have sealed bearings for durability. They are 2.25mm thick at the tooth which fits inside most narrow 6 through 9 speed chains, and the pulley cage is wide enough to allow 1/8″ single speed chains as well. Chain tension is optimized when the chain length is cut so that the pulleys are aligned vertically.

We make spare parts available to extend the life of you Melvin. Older models with plastic pulleys can be upgraded with the new sealed bearing pulleys.

  • Installation instructions
  • Paul logo sticker
  • AVT.Bike is an authorized Paul Components dealer and proud to carry one of the largest selections of Paul Components products available online and shipped anywhere in the world.
  • Paul Components are available in a range of colors which may vary by product so please consult the specific product page for details on available options.
  • Other colors and product options are available depending on stock levels, so if you don't see the color or exact product you are looking for please contact us.
  • We typically ship out Paul Components product in around 2 days (USA order) / 3-5 days (International orders) from placing your order, but in some cases this can take a few days longer due to stock & production schedules.
  • If you have any technical questions at all on Paul Components products please contact us and we'll be pleased to help you out!
  • All Paul Components products are responsibly manufactured in Chico, California, USA.