Made a chain tensioner....

Had all the pieces on hand to make a tensioner for the Ironhead (spacers, spring, plate, bolts, nuts), except the wheels and bearings.  Was a hefty chunk to buy these, but I figure we can make three more and sell them to recover the cost.....

 

 

 Simple design-  mousterap spring provides constant tension on arm with the wheel, pushing up on the chain and absorbing irregularities. 

 

The large torsion spring came from a brake drum, and I was able to use one large spacer welded to one arm, with another spacer inside that welded to the other arm, that way there is plenty of support on the pivot.  (Nut to be replaced with nylock)

 

Mounts to the lower hardtail bolt, and a tab welded on keeps it from rotating.

Cooooool.........