2010 Cervelo RS. Marinoni touring bike. Kona Tanuki MTB. Specialized Hardrock (commuter). Raleigh (early 80s) Super Gran Prix.
Difference between Shimanos MT65 and M775 wheelsets
I have the opportunity to purchase;
an Xt wheelset (M775) for a little over $400.
a Mountain Sport MT65 wheelset for a little under $300.
Since I ride in very wet conditions, where water will go over the hub 2 or 3 times, I am concerned about the quality/number of seals on these wheels.
Having read the reviews for both (mtbr.com), I glean that the difference is mainly in the seals, the XT (M775) having a better seal system.
Looking at the exploded diagram for each (attached) I do not see any difference in the seals between these 2 wheelsets. The ONLY differences I see is a slightly differant locknut configuration on the non-drive side and 9 ball bearings (MT65) vs the 13 on the XT (M775). mt65 diagram
The difference between the M775 and the MT65 is 710-T. ; )
Perhaps there's a weight difference, or stiffness and strength of the spoke lacing. The diagrams certainly look very similar though. Will any seals really work when completely submerged do you think? I would have thought they'd only hold out for a brief time at best. There is a rotating component next to a soft seal in whatever design is used - water will always sneak through eventually.