Quote from shellbear on Mar 7th, 2012, 1:49pm: Ok, I'm sufficiently frightened. Lynn told me last weekend that you were instrumental in getting her 3 ring installed on her Musashi. Might I enlist your services to do the same for mine? I will PM you with details...
There were two hills on the Lancaster ride that were really difficult for me to climb. One of them had me thinking that I needed to get off the bike and start walking (I didn't, though). I was cranking maybe 142 pounds of body weight and 30.5 pounds of bike and tool weight up the hills. I was riding a RANS X-Stream (About 1 pound lighter than a Musashi). It had a 52/39/30, 170 mm triple crankset and a custom 11/30 cassette. The lowest gear-inch value for the drivetrain was
24.3.
The Musashi comes standard with a 10-speed 11/32 mountain bike cassette. The lowest gear-inch value for a stock Musashi is
27.9. Maybe the optional cassette Mike installed on your bike is an 11/34 or 11/36. You need to either count the teeth or look for the tooth count stamped on the big cog. If the cassette is an 11/34, the gear-inch value will be
26.3 and if 11/36, will be
24.8.
If you installed a 165 mm triple crankset on your bike, the lower gear-inch value would be
23.2 for an 11/34 cassette and
21.9 for an 11/36. The lower the gear-inch value, the greater the climbing power.
In addition to the new crankset you might need a new bottom bracket, you would need to replace your 2-speed trigger shifter with a 3-speed shifter, and might need to replace the rear derailleur with a long-cage derailleur (If the stock Rival mid-cage derailleur is still on your bike, it's gear wrap capacity would be exceed as much as 21% with the new crankset installed).
I would be glad to work on your bike, but before you spend all that money on components, you should probably try Lancaster with your current setup. The main reason Lynn installed a triple was she already had the crankset, and she prefers to ride in the middle ring of a triple, instead of the small or large ring of the Musashi's stock compact crankset. Why don't you try climbing Flag Pole Hill at WRL, sometime, to test the climbing ability of your current setup?
I currently have a 170 mm carbon triple crankset installed on my Musashi, because I'm running a 12/27 close-ratio cassette. Lower gear-inch value is
29.2. This setup is fine for White Rock Lake, but is probably not suitable for long, steep hills. Today, I ordered a 22T chain ring, which will give my bike's drivetrain a lower gear-inch value of
21.4. I'm preparing the Musashi for Ride Ataxia (I have forgotten what the terrain was like on that ride).