What’s this kind of sprocket called?

[viclioce]

Here’s a pic. It’s on my Ace B+. Victor

[dirty_rat]

It's an overlay sprocket. The Ace 100's used to come with a smaller 36 tooth sprocket for street use and for off-road you could bolt on the 50 tooth overlay sprocket. It also required use of a small section of chain and another master-link.

[taber hodaka]

I would call it a disaster as it usually ruins the smaller sprocket. It is referred to as a overlay sprocket as it overlays the smaller street sprocket. To me this sprocket combination is not suitable for any serious off road riding. ------------Clarence

[Al Harpster]

I don't know about it's overall suitability, but this dual sprocket seems like a clever idea.

It's one of the many things that intregues me about Hodakas. I'm a huge fan of the Ace.

Id like to have one of these sprocket set-ups.

One in good condition I mean.

[Bruce Young]

Al what model of machine do you have, I can check my inventory. Hodakapartsidaho.com Bruce Young 1--208--571--2823

[givergas]

i have a 1964 honda 90 with the same set up....albert

[taber hodaka]

The chain adjusters as shown were easy to fail and slip causing chain derailment resulting in damage to the cases and shift cover. look closely and you will see gouges on the sprocket. Also in looking at the bolts on the overlay you can see where the bolts have slipped around, ruining the street sprocket. I would use the updated chain adjusters. I sold and maintained 150+ machines prior to 1972. ------------Clarence

[MTrat]

Is that a sheet metal screw 'rim lock' on that wheel. And I agree with Clarence on the effectiveness of this sprocket system. Numerous other small bikes of the day used this also.

[Scribbler]

Both of my new Ace 90s came with the 32 tooth standard sprocket and 46 tooth overlay. The owner's manual recommended breaking in with the 32 tooth.

The '60s were the days of the street/trail bike. The later Honda Trail bikes had a dual-range lever that made the switch inside the transmission.

[ossa95d]

Several of the Japanese manufacturers offered small street trail bikes with the overlay sprocket set up. I think it may have been Kawasaki (or maybe Honda) that had a dish shaped overlay sprocket that was pulled into place and released by spring loaded bolts. Sheet metal screws were commonly used as a rim locking system back then. As a matter of fact Can-Ams came with sharp pins around the bead of the rim. They were tough on the knuckles when changing a tire.

[MTrat]

Kawasaki had the dish shaped overlays which were quicker to change over but were weak in design and didn't work out very well. I had one on an 85 Trail....

[viclioce]

So you’re saying these chain tensioners were changed/updated and should be replaced? The only thing different I noticed about them is they have a shorter screw length than my Toads & Wombats. How are they considered inferior, just for informational purposes? I can look for another set, but I’m curious. Thanks! Victor