It all depends on the type of bike you are working with, but my personal preference is that if you can do without the use of it, that is one less worry down the line. If your set up and installation allows you to cut the chain to the right length with minimal slack in the chain and to exclude the idler pulley from the set up, do it! That would simply be one less headache in the long run, and when your chain starts to stretch over time and use, that is when you can install the idler pulley to keep the chain tight. If you can do without the idler pulley, there is slightly less resistance (as the chain will no longer be rubbing on the idler wheel), and a little less maintenance in having to keep the pulley aligned and tight.
ZoomBicycles, your #1 Source for Motorized Bicycle Engine Kits, Parts and Service.
Unit 104-1525 Broadway St. Port Coquitlam, BC, Canada V3C6P6 T +1 (877) 565-6888 Ext 7 F +1 (778) 285-8699
Operating motorized bicycles or bicycle engine kit involves some risk of bodily injury . Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. EHBC Distributors Ltd is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit. Motorized bicycles are not recommended for use by persons under 16 years of age. Obey all traffic regulations. Always wear a helmet while riding. Never operate your motorized bicycle on a pedestrian through way or sidewalk while the engine is running. Never operate your motorized bicycle in an unsafe manner. Check local and state laws before riding on streets.
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