Sportsmith Blog
26Jan/110

How to Remove and Replace the Bottom Bracket on an Indoor Cycling Bike

Following is a basic guideline of removing and replacing the bottom bracket on an indoor cycling bike. Due to the different brands of indoor cycling bikes and designs for bottom brackets, the following should only be used as a guideline. If any of the information is not exact to the bike being serviced, refer to the service manual or call Sportsmith for further help.

Common Tools Needed:

  • Phillips Screw Driver
  • Set of Allen Wrenches (standard and metric)
  • Bottom Bracket Tool
  • Cotterless Crank Puller Tool
  • 9/16” Socket
  • Ratchet Wrench
  • Pedal Wrench
  • Crescent Wrench

You will begin by removing the outside belt/chain guard by using either or both the Phillips screw driver and Allen wrenches. It may be necessary to remove the drive side pedal (using the pedal wrench) in order to completely remove the outside belt/chain guard.

Once the belt/chain guard is removed, you will need to remove the belt/chain. If the unit is belt driven, you can simply “walk” the belt off the pulley by pushing the belt to the outside while turning the crank backwards. **CAUTION: PINCH POINT ** If the unit is chain driven, most use a continuous chain that can be “walked” off the sprocket just like the belt. **CAUTION: PINCH POINT ** Some chains may use a connecting link and can be separated at the connecting link to remove the chain. The connecting link is different in appearance from all other chain links.

Now it is time to remove the crank arms. How to Use a Cotterless Crank Puller Tool

It works best to place the bike upside down for best leverage to remove the bottom bracket. (If placing the bike upside down, ensure proper seat adjustment for best bike balance.) Begin removing the bottom bracket from the drive side of the bike. This side has a reverse thread. You will need to turn right to loosen and remove the bottom bracket. Place the teeth of the bottom bracket tool into the teeth of the bottom bracket cup. Using the ratchet wrench or crescent wrench to turn the bottom bracket tool, you will turn right to loosen and remove the bottom bracket. (If removal of the bottom bracket is difficult, it helps to use a crescent wrench in combination with a bolt threaded into the bottom bracket shaft to hold the tool in place while applying pressure to break the bottom bracket loose.) Remove the bottom bracket from the frame. Remove the bottom bracket cup and/or lock ring from the non-drive side of the bike. This is a standard thread. You will turn left to loosen and remove this bottom bracket cup and/or lock ring.

Install the new bottom bracket from the drive side and tighten flush to the frame. Install the bottom bracket cup and/or lock ring to the non-drive side and tighten.

Re-install the crank arms and pedals. Make sure the crank arm bolts are tightened to the proper torque. If unsure of proper torque specs, refer to the equipment service manual or call Sportsmith.

Re-install the belt/chain onto the pulley/sprocket. If belt/chain was “walked” off the pulley for removal, it can be “walked” onto the pulley/sprocket by placing the belt or chain along the bottom of the pulley/sprocket. Carefully, turn the crank arm forward while lifting on the belt/chain. **CAUTION: PINCH POINT ** Continuing turning the crank forward until the belt/chain is in place.

Re-install the outside chain guard and test the unit. Ride the bike without tension and test with tension. Ensure functionality and feel of the ride. Make any adjustments if necessary.

14Jan/110

SPRI Tiger Tail

In today’s fast paced world, most people don’t even have time to exercise properly, let alone actually take the time and effort to stretch and massage their muscles correctly. Speaking of massage, it can be a very difficult thing to do by oneself. Usually you need to have a personal trainer handy for such things. This is no longer the case, however. With the Tiger Tail, you can self-massage quickly and easily every time you exercise!

Created by the Sports Performance and Rehabilitation Institute, or SPRI, the Tiger Tail is designed to help you self-massage your own muscles after a strenuous workout. The Tiger Tail comes in three sizes, and features sturdy nylon or heavy plastic handles and a padded massaging surface. Not only can you use the Tiger Tail by yourself, but its also able to be used on you by someone else, so if you do happen to have that personal trainer handy, they can certainly give you a great massage and rubdown using a Tiger Tail.

The smallest of the Tiger Tail line is the To-Go. With a massage surface of seven inches, it’s easy to store this small wonder in a gym bag or locker. Just because it’s small, though, doesn’t mean it doesn’t have everything the larger models have. The padded, rolling massage surface is smooth and durable, and its lightweight makes it easy to tote along with all your other workout equipment.

Next is the middle sized eighteen inch Tiger Tail. Its larger size means it can massage more surface area at a time, making your workout times faster, and your preparation and cool down easier. At only eighteen inches, it is still small enough to toss into a large duffle bag, or even into the bag in which you carry your Yoga equipment.

Finally, the twenty-two inch long Tiger Tail. It is the largest product in the Tiger Tail line, and has all the same features of its smaller cousins. The length makes it ideal for full back massages, and its still small enough to toss into a large gym bag.