Stillridin Posted May 20, 2015 Share Posted May 20, 2015 I'm installing new drive on the BB and found that neither the old stock front sprocket nor the new stock front sprocket tighten firmly on the output shaft. That is, when the retaining bolt is tight, the countershaft sprocket still has slight movement rotationally against the teeth of the shaft but also has some lateral play in an out along the shaft. Neither play is exhorbitant but hope someone can confirm for me whether that is normal or whether the retaining bolt should secure the sprocket firmly to the output shaft? Thanks Stillridin Quote Link to comment Share on other sites More sharing options...
Redbird Posted May 20, 2015 Share Posted May 20, 2015 The lateral movement on the shaft is normal, the sprocket "floats" on the splines. The play in spline engagement may or may not be of concern depending on how severe it is. Regardless, the bolt is not designed to hold the sprocket securely, it merely keeps it from sliding off the end of the shaft. Quote Link to comment Share on other sites More sharing options...
jon haney Posted May 20, 2015 Share Posted May 20, 2015 I've always had a tough time aligning the front sprocket splines so that it will slide on. If yours has noticeable rotational play, even with a new sprocket, I would take a close look at the shaft and/or try a different sprocket. I've never noticed any rotational play, and that is after a thousand plus passes down the drag-strip. Quote Link to comment Share on other sites More sharing options...
TuffguyF4i Posted May 21, 2015 Share Posted May 21, 2015 A little rocking is normal. Quote Link to comment Share on other sites More sharing options...
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