Subpages (12): Cranks Derailleurs_rear Forks Handlebar grips Handlebars Hubs Pedals Rims Seat Posts Stems Tires Wheels
--
CURRENT DRIVETRAIN: 7 Speed;
Derailleur (rear): Deore DX (RD-MT650-GS) (long cage). Shifting systems: SIS, STI, friction. Originally designed for 7 speed. Can be used as both a 6, 7, and 8 speed changer. Maximum rear cog is 32T. Total capacity is 38T. Weight = 318.5 grams. Early 1990s, and discontinued in 1994.
Derailleur (front): Deore DX (FD-MT62). Designed for triple; Max ring difference: 26T; Clamp style: 28.6mm Clamp; 31.8mm Clamp; Adjustable Clip 28mm - 33mm.
Cassette: Shimano Deore DX Hyperglide 7speed (CS-HG70): [13 - 15 - 17 - 19 - 23 - 26 - 30]
Crankset: Shimano Deore DX (FC-MT60): Chainrings: 50/44/28 (40/44 Biopace) (28 Salsa). Crank length = 175mm. BCD = 110mm / 74mm. BB style: square taper. Extractor threading: 22x1mm (Standard). Pedal threads: 9/16" x 20 (English). 754 grams.
Hubs: Shimano Deore DX FH-M650
[VeloBase]: Rear spacing 130-135mm; low flange ("low dish"); spoke drilling 32, 36. (1990-93)
Hubs: Shimano Deore LX
GEAR INCHES: 25-103
---
UPGRADE TO 9 or 10 SPEED
Crank: 48-36-24
Derailleurs: Deore
Shifters: Bar ends
Cassette: 11-36
19.4 GI
--
VO Triple
Sugino Triple Alpina: 48-36-24
http://store.biketouringnews.com/sugino-alpina-2-triple-crankset-48-36-24/
Alpina 2 triple Sugino Crankset 48/36/24 optimized for 10 speed chain. Will work with 9 speed as well.
--
POSSIBLE UPGRADES (with current components listed)
Shifters: Shimano Light Action bar end shifters
Derailleur (rear): Deore DX (RD-MT650-GS) (long cage)
[VeloBase info]: Shifting systems: SIS, STI, friction. Originally designed for 7 speed.
[BikePro]: Can be used as both a 6, 7, and 8 speed changer. Maximum rear cog is 32T. Total capacity is 38T. Weight = 318.5 grams. Early 1990s, and discontinued in 1994.
Derailleur (front): Deore DX (FD-MT62)
[VeloBase]: Designed for triple; Max ring difference: 26T; Clamp style: 28.6mm Clamp; 31.8mm Clamp;
Adjustable Clip 28mm - 33mm.
Cassette: Shimano Deore DX Hyperglide 7speed (CS-HG70)
[VeloBase]: [13 - 15 - 17 - 19 - 23 - 26 - 30] (1990-1993)
My derailleur can handle up to 32T - to get that need to go to 8 speed (HG51-8) [11-32] (with a 28T chainring, this would achieve a gear inch of 23.1)
Crankset: Shimano Deore DX (FC-MT60)
[VeloBase]: Crank length = 175mm. BCD = 110mm / 74mm. BB style: square taper. Extractor threading: 22x1mm (Standard). Pedal threads: 9/16" x 20 (English). 754 grams. (Late 1980s).
Chainrings: 50/44/28 (40/44 Biopace) (28 Salsa).
Hubs: Shimano Deore DX FH-M650
[VeloBase]: Rear spacing 130-135mm; low flange ("low dish"); spoke drilling 32, 36. (1990-93)
Shimano Deore DX hub HB-M650 supports both Uniglide and Hyperglide
Wheels: Mavic MA 40
UPGRADING THE DRIVE TRAIN
Why?
To achieve lower gears, and a better mix of gears
To achieve more smoothness
To donate current derailleur to Minty (spend money upgrading, rather than buying Minty the same derailleur)
Elements
Cassette: A larger range cassette (11, 12, or 13 to 32, 34, or 36T)
Rear derailleur: 8-10 speed compatible with cassette.
Shifters: Must be compatible with new drive train.
Chainrings: Using existing crank, replace chainrings, with lowest going down to 26 or 24. [Largest = 50, 48, or 46; Middle = 44, 42, 40, 38, or 36; Smallest = 28, 26, or 24]
Crankset: An alternative to new chainrings would be to replace the entire crankset.
Front derailleur: Must be compatible with maximum ring difference on the crankset (current FD = 26T; I can run a 24/50 with this FD)
--
shimano deore chainrings 110 bcd
http://www.peterwhitecycles.com/chainrings.asp
GEAR INCH RATIOS (LOW END) [Sheldon Brown's Calculator]
Cassette X Chainring = GI
36 X 24 = 18
36 X 26 = 20
34 X 24 = 19
34 X 26 = 21
32 X 24 = 20
32 X 26 = 22
30 X 24 = 22
30 X 26 = 23
30 X 28 = 25
INFORMATION
Chainrings
Derailleurs
http://en.wikipedia.org/wiki/Derailleur_gears
http://sheldonbrown.com/harris/derailers-rear.html
http://www.stanford.edu/~dru/triplecheat.html
--
CALCULATING MAXIMUM DERAILLEUR CAPACITY
Determine Maximum Chainring Difference by subracting the number of teeth in the smallest chainring from the number of teeth in the largest chainring [Rando's: 50T- 28T = 22T] [Possible new: 48-24 = 24T]
Determine Maximum Cassette Cog Difference by subtracting the number of teeth on the smallest cassette cog from the number of teeth on the largest cassette cog [Rando's: 30-13 = 17T] [Possible new: 34- 11 = 23T]
Determine Total Drivetrain Capacity by adding Maximum Chainring Difference to the Maximum Cassette Cog Difference [Rando's: 22 + 17 = 39T] [Possible new: 24 + 23 = 47T]
Record the Maximum Cassette Cog (the number of teeth on the largest Cassette Cog) [Rando's: 30T] [Possible new: 34]
For Shimano derailleurs:
SS - Short Cage Road Double - Maximum Cassette Cog is 27 and Total Capacity is 29
GS - Medium Cage MTB/Road Triple - Maximum Cassette Cog is 34(MTB)/27(Road) and Total Capacity is 33(MTB)/37(Road)
SGS - Long Cage MTB - Maximum Cassette Cog is 34 and Total Capacity is 45
--
Derailleurs
1993: Deore XT RD-M735 SGS (long cage), STI compatible 7speed SIS compatible
1993: Deore DX RD-MT650 SGS (long cage), 7speed STI compatible
1994-1995: Deore RD-M737 SGS (long cage), STI compatible 8 speed SIS compatible,
1996-1998: Deore XT RD-M739 SGS (long cage) , STI compatible 8 speed SIS compatible
1999-2005: Deore XT RD-M750 SGS (long cage) , STI compatible 9 speed SIS compatible
1994: Deore XTR RD-M900, 8 speed STI compatible
2005: Deore XTR RD-M960-SGS (long cage), 9 speed STI compatible
Deore LX RD-M571: 9 spd; Large 34, Small 11, Total 45, Front difference 22
Deore LX: RD-M581
http://www.peterwhitecycles.com/chainrings.asp
http://sheldonbrown.com/harris/chainrings/74.html
http://www.bikeforums.net/archive/index.php/t-351972.html
--
Deore XT
Deore XT M735 1990 6/7-speed
Deore XT M737 1993 8-speed: Max 32T; Tot 33T
Deore XT M739 1995 8-speed: Max 32T; Tot 38T
Deore XT M750 1999 9-speed
Deore XT M760 2003 9-speed
Deore XT M770 2008 9/10-speed
Deore XT M780 2011 10-speed
--
GI
26 X 34 = 21
24 X 34 = 19
--
http://www.modernbike.com/product-2126176132?gclid=CjwKEAjwg_afBRD3rpChlqiKt1ESJACwY6NkTTBQLV_Z34pwZHR3xUvWHe0Rah9WHEvS9HpaN6ynUhoCQdPw_wcB
Shimano HG70-I 8-speed cassette.
Speeds: 8
Cassette Cogs: 11,2,4,6,8,21,4,8 and 11,3,5,7,20,3,6,30
--
http://sheldonbrown.com/k8.shtml
--
Crankset: Shimano Deore DX (FC-MT60)
[VeloBase]: Crank length = 175mm. BCD = 110mm / 74mm. BB style: square taper. Extractor threading: 22x1mm (Standard). Pedal threads: 9/16" x 20 (English). 754 grams. (Late 1980s).
Chainrings: 50/44/28 (40/44 Biopace) (28 Salsa).
https://si.shimano.com/pdfs/ev/EV-FC-MT60-SG-1091.pdf
https://si.shimano.com/pdfs/ev/EV-FC-MT60_BB-MT60-0861.pdf
50/44/28
48/38/28
48/36/24 (26 tooth difference)
48/36/24 (24 tooth difference)
46/36/26 (20 tooth difference)
Derailleur capacities
Rear [Deore DX (RD-MT650-GS) (long cage)]: Can be used as both a 6, 7, and 8 speed changer. Maximum rear cog is 32T. Total capacity is 38T.
Front [Deore DX (FD-MT62): Max ring difference: 26T
Cassette: Shimano Deore DX Hyperglide 7speed (CS-HG70): [13-30; 17 tooth difference] [13 - 15 - 17 - 19 - 23 - 26 - 30] My derailleur can handle up to 32T - to get that need to go to 8 speed (HG51-8) [11-32] (with a 28T chainring, this would achieve a gear inch of 23.1)
The front derailleur can shift a 50 large and a 24 small:
50 - 24 = 26;
48-24 = 24
46 - 24 = 22
The rear derailleur can shift a total of 38T
Front = 24 or 26
Rear = 17 (13-30); 20 (12-32)
Total: 26 + 20 = 46;
38 - 22 = 16
--
7 speed cassettes https://www.sheldonbrown.com/k7-7.shtml
SRAM PG730 7 Speed Cassette (12-32T)SRAM 12-32 (12,14,16,18,21,26,32): https://www.modernbike.com/sram-pg-730-7-speed-12-32-cassette
https://www.harriscyclery.net/product/sram-7-speed-cassette-12-32-5777.htm
Dimension LY-1007CKHN Dimension (12-32)
https://www.modernbike.com/dimension7-speed-12-32-tooth-cassettenickel
--
Cranksets
https://neloscycles.com/Cranksets-Shimano-Deore-Fc-Mt60/
--
46/36/24 X 13-30 = 21.6 to 95.6 GI
--
Shimano Deore M591 9-Speed Rear Derailleur Capacity: 45T; Max rear T 34; 22T max front difference.
--
shimano 8 speed cassette on 7 speed hub
https://www.bikeman.com/bicycle-repair-tech-info/bikeman-tech-info/1640-how-many-gears-can-i-put-on-this-thing#:~:text=A%207%20and%208%20speed,because%20of%20that%20added%20gear.&text=Simply%20put%20%2D%208%2C%209%2C,the%20use%20of%20a%20spacer.
The following refers to Shimano compatible cassettes, not Campagnolo. A 7 and 8 speed cassette have the same amount of space between each cog. An 8 speed cassette is slightly wider than a 7 speed cassette because of that added gear. When 8 speed came out they had to make the freehub wider in order to fit that extra cog. The old time mountain bikers may remember when they wanted to upgrade their 7 speed drivetrain to 8 speed they would have to purchase a new rear wheel to fit the wider cassette on.
--
Shimano Deore 9-Speed Chainring 24T 36T 46T
--
CRANK OPTIONS
Replacement Chainrings for current crank (24T 36T 46T)
New old stock Deore crank
Sugino XD600 (26T 36T 46T; $176 + $26 for a 24T)
Velo Orange
Grand Cru 110 Fluted Triple Crankset
Teeth: 48/34/24
Rivendell
Crank - Clipper Triple - 46t x 36t x 26t
$125.00
Crank - Silver - Triple 44x34x24
$220.00
SUGINO
24: https://www.treefortbikes.com/Sugino-24t-x-74mm-5-Bolt-Mountain-Inner-Chainring-Anodized?utm_source=google&utm_medium=cpc&adpos=&scid=scplp333222346794&sc_intid=333222346794&gclid=CjwKCAiAirb_BRBNEiwALHlnD0fpHDR9TOfWGGd2HivZKwTTeLkMr8iF0thhN--elK2Rc5x3x_MRhxoCU78QAvD_BwE
36: https://www.treefortbikes.com/Sugino-36t-x-110mm-5-Bolt-Mountain-Middle-Chainring
46: https://www.treefortbikes.com/Sugino-46t-x-110mm-5-Bolt-Mountain-Outer-Chainring-Anodized
Common spacings: 126mm = Rear 6 and 7 speed (road); 130mm = Rear 7-speed (MTB) and 8- 9- and 10-speed (road); 135mm = Rear 7- 8- and 9-speed (MTB)