7 in. drivers or 8 in. drivers

[fc8464]

This is my first post on Snow and Mud so hello to everyone. I am putting a 156 x 3 with a new K-Mod on my 09 Summit SHR880. Debating on using the 7 in. drivers or spending the extra cash on the drop and roll and getting less rolling resistance with the 8 in. Is there a noticable difference? Is the drop and roll going to have a negitive affect on my attack angle? Thanks for any help you can offer. Fred

 

[pfi572]

Fred I debated the same thing a few years ago.
IMO I don't think the performance is worth the extra cost of the extended case.
I went with 7 tooth and running 174x3 inch.
If you have it done i think the cost can be in the $4000 mark.
Do it yourself and most likely $1500 for extended case and would go C3 belt drive.
Welcome to forum

 

[fc8464]

Thanks pfi572 for the advice. Will go ahead and order the 7 in. Fred

 

[hivoltagesledhead]

I put 7T drivers on my 09 with a 163x3" CE.....it works great !!!

 

[MoThEr TrUcKeR]

Same here on my 13 xm

 

[fc8464]

I knew the 7 in. would work, I just figured if there was more performace to be had now would be the time to do it. I already got a small fortune wrapped up in this sled. Wont be replacing it any time soon. Now I am looking into VE tunnel extension with a additional cooler as my sled is only a 146. I think getting a after market temp. gauge would also be a good investment. Some times theres alot of trail to get to the good snow. Fred

 

[motorheadracing]

Looking into making this change to my beast this year. Have you had any troubles at all with your track or ripping lugs off? Do u have the old 9115 track or the new one? And is the smaller driver enough of a gear reduction or did u change gears as well? Thanks in advance

 

[pfi572]

No lugs ripped off mine and it is the older 3 inch 174. As to the gearing if you have 20/49 you will fine pending rider weight and the type of riding you do. If 21/49 I would go to 20 tooth top gear. Gearing is always up for debate and the type of clutching you prefer.