Summit 670x Re-Gearing

[meierjn]

Good day everyone... I finally got my "aged" 136" x 15" track replaced with a nice 144" x 16" track. It took a bit of work and tweaking but I finally got everything working as it should. I had to go with 8 tooth drivers up front to make room for the larger lugs and some heavier springs and drop brackets in the back to stop the track from rubbing in the back. But, with the newer/smaller drivers the track speed doesn’t seem what it used to be. What would be the recommended gearing combination be to bring everything back to as close to stock as possible or even to a “better than stock” configuration? Thanks in advance.

 

[meierjn]

Somebody must have had to re-gear one of these before. Any suggestions will be appreciated.

 

[DRD]

Calculate away:



One tooth drop on the drivers is only 10 MPH, surprised you noticed it.

 

[meierjn]

Excellent! Thanks. So what would the "recommended" speed for this sled that I should be aiming for?