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Pulleys - '99-2006 (except '06 Dyna) |
Pulleys - '07 Twin 96 & '06 Dyna (30T & 34T) |
More teeth means higher MPH and less RPM. Fewer teeth means higher RPM and more power than a stock 32 tooth pulley. Fits all EV80 and Twin 88 5 and 6 speed transmissions: 29, 30, 31, 33, and 34 teeth available.
NOTE: All 2007 Twin 96 and '06 Dynas MUST use the new part number pulleys. Pulleys made for 5 speed transmissions will not fit HD 6 speed transmissions!
| OVERDRIVE BELT PULLEYS | POWER PULLEYS | POWER PULLEYS |
| 34T Teeth - 6% less RPM (180 RPM drop in RPM @ 60 MPH) Part #290346 (All 2007 & '06 Dyna) Part #290344 ('94 - '06)* Part #290340 ('85 - '93) |
30 Teeth - 6% more RPM Part #290306 (All 2007 & '06 Dyna) Part #290304 ('94 - '06)* Part #290300 ('95 - '93) |
NOTE: Pulleys for '06 Dyna & all '07 Twin 96s are only available with 30 & 34 teeth. |
| 33T Teeth - 3% less RPM Part #290334 ('94 - '06) Part #290330 ('85 - '93) |
29 Teeth - 9% more RPM Part #290294 ('94 - '06) Part #290290 ('85 - '93) |
31T Teeth - 3% more RPM Part #290314 ('94 - '06) Part #290310 ('85 - '93) |
| * All 2006 Twin 88s (except '06 DynaGlide) use these part numbers | ||
Andrews Products pulleys match 1994 style design. The '94 design has the advantage of 50% longer internal spline length compared to the early design. New style pulleys will fit both early (1985-1993) and late ('94-'06) transmission shafts. Overall belt drive ratio changes of 3%, 6%, or 9% are very noticeable to a rider! All 1985-1993 pulley kits have new style spacer, lock ring, retainer bolts and seals included as part of the kit. Pulley kits for '94-'06, '06 Dyna and all 2007 must use original stock seal and lock ring.
| Pulley Tooth Counts & Ratios 1994-2006 | Pulley Tooth Counts & Ratios 1985-1993 | |||||
| 36T clutch - 25T engine pulley | 37T clutch - 24T engine pulley | |||||
| Trans. | Rear Wheel | Overall | Trans. | Rear Wheel | Overall | |
| 29 | 70 | 3.48 | 29 | 70 | 3.72 | |
| 30 | 70 | 3.36 | 30 | 70 | 3.60 | |
| 31 | 70 | 3.25 | 31 | 70 | 3.48 | |
| 32 (Stock) | 70 | 3.15 | 32 (Stock) | 70 | 3.37 | |
| 33 | 70 | 3.05 | 33 | 70 | 3.27 | |
| 34 | 70 | 2.96 | 34 | 70 | 3.17 | |
| 29 | 65 ('95 Softail) | 3.23 | 29 | 61 ('93 Softail) | 3.24 | |
| 30 | 65 ('95 Softail) | 3.12 | 30 | 61 ('93 Softail) | 3.13 | |
| 31 | 65 ('95 Softail) | 3.02 | 31 | 61 ('93 Softail) | 3.03 | |
| 32 (Stock) | 65 ('95 Softail) | 2.93 | 32 (Stock) | 61 ('93 Softail) | 2.94 | |
| 33 | 65 ('95 Softail) | 2.83 | 33 | 61 ('93 Softail) | 2.85 | |
| 34 | 65 ('95 Softail) | 2.75 | 34 | 61 ('93 Softail) | 2.76 | |
Belt Drive
Pulley - Installation Notes
Installing a transmission pulley with more or fewer teeth than stock requires adjusting the rear axle forward (for more teeth on sprocket) or backward (for fewer teeth on sprocket).
Rear axle position adjustment for each one tooth change on transmission
sprocket = + / - .125 inches (3.2 mm).
Rear axle position adjustment for each one tooth change in belt length = + / -
.280 inches (7.1 mm).
If there is not enough axle adjustment at the rear frame, it may be necessary to use a
belt with more or less teeth than the stock belt. There are at least 8
different drive belts available. They have 126, 128, 130, 132, 133,
135, 136 or 139 teeth. The only sure way to tell which belt you have is to
manually count the teeth (use a paint mark for reference).
1984-1993 EV80 overall final drive ratio (engine to rear wheel) is 3.37 to 1.
Overall = ( 37 / 24 ) x ( 70 / 32 ) = 3.37.
1994-2006 EV80 and Twin 88 overall final drive ratio (engine to rear wheel) is 3.15
to 1.
ANDREWS PRODUCTS, INC.
431 Kingston Ct., Mt. Prospect, IL 60056
Phone 847-759-0190 Fax 847-759-0848
andrewsproducts.com