Which Chain Tensioner

[duke]

Chain tensioner A

Chain tensioner B

 

[Sidewinder Jerry]

Chain tensioner A View attachment 116480
Chain tensioner B View attachment 116481

I like the bottom one better. However, I prefer sprockets instead of pulleys.

 

[wrench]

The best thing to do is adjust the chain length so you don't need a chain tensioner

But if you must use a chain tensioner I suggest "B" the Arch

"A" can fail (piviot) and get jammed in the spokes

 

[duke]

Liking the arch with derailleurs sprockets

 

[Sidewinder Jerry]

Sealed bearing sprockets like these will work much better than derailleur jockey pulleys will.

Sprocket Idler 10 tooth 410H 415H 40 or 41 3/8" ID

Sprocket Idler 10 tooth 410H 415H 40 or 41 3/8" ID

www.staton-inc.com

 

[duke]

There’s no spacers or bearings?