Truvativ Hammerschmidt
pub-8348084515547660
 |
 2009 JAMIS DAKAR XAM 2 MOUNTAIN BIKE  US $4,000.00
|
 Diamondback Mission 3 Mountain Bike All Mountain Brown 21 US $2,472.95
|
 Diamondback Mission 3 Mountain Bike All Mountain Brown 155 US $2,472.95
|
 2011 SRAM RED BB30 CERAMIC GROUP US $2,200.00
|
 2011 SRAM RED GXP CERAMIC GROUP US $2,200.00
|
 Truvativ HammerSchmidt FR Chainset 175mm 24t ISCG 05 Inc 22t ICSG 03 US $1,063.16
|
| Powered by phpBay Pro |
Planetary Crankset Friction Losses?
Regarding the new Truvativ HammerSchmidt, Schlumpf Mountain Drive cranksets that offer two ratios.
What are the frictional losses in each of the gears? Does the lower or higher ratio have the most friction?
Why does the SRAM offering have such a small difference between the ratios? Since cogsets already offers 3x range (11:34), why not at least a 2x range for the planetary front?
So which is the locked ratio and which is the one that uses the gears?
I still see no reason to limit the "overdrive" ratio to such a small increment.
If I read the SRAM site right, the reason for the ratios that they chose for the H.S. was based around the standard Freeride front ring selection of 24/36/bash or 26/38/bash. The proposed advantage is that you get the same gear ratios in a smaller package, less diameter hanging down to get hung up on obstacles.
The friction losses are as to be expected - less when in the "locked" ratio and more in the ratio that uses the gears when they are engaged.
TRUVATIV Hammerschmidt DVD
|
|
2009 JAMIS DAKAR XAM 2 MOUNTAIN BIKE US $4,000.00
|
Diamondback Mission 3 Mountain Bike All Mountain Brown 21 US $2,472.95
|
Diamondback Mission 3 Mountain Bike All Mountain Brown 155 US $2,472.95
|
|
2011 SRAM RED BB30 CERAMIC GROUP US $2,200.00
|
2011 SRAM RED GXP CERAMIC GROUP US $2,200.00
|
Truvativ HammerSchmidt FR Chainset 175mm 24t ISCG 05 Inc 22t ICSG 03 US $1,063.16
|
 Truvativ Hammerschmidt FR MTB Crankset 165mm US $589.95
|
 TRUVATIV HAMMERSCHMIDT FR MTB CRANKSET 175MM US $589.95
|
 TruVativ HammerSchmidt Freeride 175mm 24T ISCG 05 03 US $579.93
|
 TruVativ HammerSchmidt 24T Freeride 170mm Crankset US $579.93
|
 TRUVATIV HAMMERSCHMIDT AM MTB CRANKSET 170mm US $559.95
|
 TruVativ HammerSchmidt All Mountain 170mm 24T 05 03 US $559.91
|
 Truvativ HAMMERSCHMIDT AM 170MM ISCG US $543.65
|
 Truvativ HAMMERSCHMIDT FR 165MM ISCG US $543.65
|
 TRUVATIV HAMMERSCHMIDT FR CRANKSET 170MM NEW US $388.79
|
 Truvativ ISCG Tab Facer Cutters Holder and Spacers US $188.50
|
 TV HammerSchmidt Over drive disassembly tool US $154.53
|
 SRAM Truvativ 2011 X0 Hammerschmidt Trigger Shifter US $124.95
|
 Truvativ HAMMERSCHMIDT BB FR 83 US $57.14
|
 Truvativ HAMMERSCHMIDT BB AM 68 73 US $57.14
|
 Truvativ HAMMERSCHMIDT BB AM 83 US $57.14
|
 Truvativ Hammerschmidt AM Bottom Bracket with M15 bolt 68 73mm US $50.95
|
 TV HammerSchmidt BB All Mtn 83mm M15 spindle US $49.93
|
 TV HammerSchmidt BB Freeride 83mm M12 spindle US $49.93
|
 TruVativ HammerSchmidt 24T Ring and Guide US $29.99
|
 TV HammerSchmidt grease 30ml US $25.91
|
 Truvativ ISCG Spacers 05 10 15 20 25 30mm Hammer Schmidt 3 pcs of each US $23.49
|
 12 mil thick PRO PACK Clear Road MTB FRAME PROTECTION by CRANKSKINS US $21.99
|
 TruVativ Hammerschmidt Cable Stop Assembly US $21.91
|
 TruVativ HammerSchmidt 22T Chainring with Guide US $20.93
|
| Powered by phpBay Pro |