N 2010 BAJA SAE COMPETITION
Quality Drive Systems (QDS) is once again proud to be a supporter of the Baja SAE Program for the 2010 competition year. We supply Continuously Variable belt drive Transmissions (CVT's) directly to Universities and Engineering Student Groups participating in this program. QDS has been offering CVT's and power train components for the Baja SAE program for 20 years. As a program supporter, QDS offers discounts on CVTs to the engineering student groups involved in this project. We also offer an array of accessory components such as seat belts, FNR gearboxes, rack & pinions, etc. Our 2010 Mini-Baja catalog is specifically designed to further assist you in the understanding and selection of a suitable CVT for your vehicle. The models that we recommend offer the greatest efficiency. Your consideration in deciding which recommended CVT to select is then based on desired ratio, as dictated by your fixed reduction ratio and your vehicles' constraints. You can be assured that regardless of the model selected QDS will do its' utmost to supply an optimum system for your vehicle and assist you any way we can with our personal technical support. If you have any questions or wish to place your order, please contact us directly and we will assist you. Please include the name of your school on all communications in order to avoid any confusion. You may E- Mail or Fax your request and we will reply likewise with our specific recommendation and/or details. (Our E-mail address is: qds@earthlink.net). Thank you for selecting QDS for your power transmission needs.
Good luck!!
DISTRIBUTED BY: QUALITY DRIVE SYSTEMS
P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
Continuously Variable Transmissions (CVTs)
DRIVE (PRIMARY UNIT) DRIVEN (SECONDARY UNIT) BELT For over 20 years Quality Drive Systems has been a leader in CVT products. These products have been proven to be an efficient and cost effective method of power transmission for a broad array of applications including: SNOWMOBILES TO DUNE BUGGIES CEMENT TROWELING MACHINES ELECTRIC VEHICLES
AGRICULTURAL EQUIPMENT CONSTRUCTION EQUIPMENT
This two pulley system consisting of a DRIVE pulley, DRIVEN pulley and matching V BELT, has been referred to over the years as a Torque Converter, belt drive transmission, and most recently, as a Continuously Variable Transmission or simply CVT. All references are correct since: 1) This system does convert torque through changing pulley ratios 2) This system acts as an automatic clutch and variable ratio transmission and 3) The pulley ratios change automatically and continually with changes in RPM and load, or torque demand. (FIGURE A)
FIGURE A
NEUTRAL
LOW GEAR
HIGH GEAR
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P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
Continuously Variable Transmissions (CVTs)
The Drive Pulley or primary pulley is typically mounted on the engine and is a speed sensitive device that acts as a delayed clutching mechanism for load free engine starting and idling. At a predetermined RPM, the sliding half of the pulley engages the belt and transmits RPM and TORQUE to the driven pulley. As this occurs, the position of the belt moves from a very small radius to a large radius, thereby affecting a change in pitch diameter and therefore the pulley ratio. The Driven Pulley or secondary pulley receives the turning of the belt from the drive pulley. As this occurs the position of the belt moves from a large radius to a smaller radius. In addition, the driven pulley is torque sensitive and controlled by an internal CAM and spring. (FIGURE B) This torque sensitive feature enables this two pulley system to automatically adjust to the correct ratio for a given load. The result is the engine is able to operate at optimum horsepower and RPM under a wide variety of load conditions. (FIGURE C) Quality Drive Systems offers many CVT designs to meet the specific performance requirements of a broad range of applications and horsepower. These devices are highly tunable so please contact QDS for assistance in choosing the CVT that is right for you.
Drive Pulley
Belt Tension
Driven Pulley
Engine Torque
FIGURE B
Vehicle Load Requirement
FIGURE C
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P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
HOW ITS APPLIED
GENERAL CVT INSTALATIONS
USE OF JACKSHAFT TO TRANSMIT VARIABLE RATIO TO DRIVE WHEEL(S).
CHAIN DRIVE THROUGH DIFFERENTIAL.
GEARING FORMULAS
CHAIN DRIVE THROUGH DIFFERENTIAL WITH GEAR BOX. Use the following formula to determine final gearing when required speed is known: A) AMPH / .92 = CMPH B) CMPH / .01136 = FT/MIN C) FT/MIN / TC = RAR D) ER / FS = DJR E) DJR / RAR = FGR:1
Use the following formula to determine top speed when all gearing is known: A) ER / FS = DJR B) DJR / FGR = RAR C) RAR / T.C. = FEET PER MINUTE (FT/MIN) D) (FT/MIN) * .01136 = CMPH
WHERE: ER = MAXIMUM ENGINE RPM FS = FULL SHIFT RATIO (HI RATIO OF CVT) DRJ = DRIVEN RPM @ JACKSHAFT
FGR = FINAL GEAR RATIO FT/MIN = FT. PER MINUTE RAR = REAR AXLE RPM CMPH = CALCULATED MPH TC = TIRE CIRCUMFERENCE (FT) AMPH = ACTUAL MPH
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P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
Continuously Variable Transmissions (CVTs)
The PWB50 drive and the LP2 driven respond to load requirements and changes in the ratio between the drive and driven pulleys so that the engine can maintain its peak power output. The PWB50 can handle up to 70 HP with proper calibration. All PWB50 series drive come with a 1 bore and keyway. The LP2 comes in 3/4 bore and a 3/16 keyway. Tuning kits are available for both drive and driven units. . CVT combination uses a 1-3/16 top width symmetrical belt.
PWB50 / LP2
Dimensions: A: 7.50" B: 6.75" C: 4.75" D: 7.75" Pulley Ratios: High: Low: .43:1 3:1 MODEL PWB50 LP2 WEIGHT 9.5 LBS. 5.0 LBS.
BELT CHART: PWB 50/ LP2 DRIVEN
PART # CIRUMFERENCE OUTSIDE DISTANCE CENTER
SAFETY NOTE: -NEVER OPERATE A TORQUE CONVERTER WITHOUT SUITABLE SAFETY SHIELD. -DO NOT RUN AN ENGINE EQUIPPED WITH A DRIVE PULLEY IF THE BELT IS NOT ENGAGED WITH THE DRIVEN PULLEY
QDS136 QDS137 QDS138 QDS139 QDS140 704098 QDS103
37.2" 39.13" 41.22" 41.89" 44.14" 46" 52.2"
10.02" 11.01" 12.08" 12.42" 13.56" 14.51" 17.65"
Belts supplied are made with high temperature neoprene compound w/ kevlar cord reinforcement. 1.3/16 top width symmetric belt. Center distances shown have a tolerance of +-1/8
DISTRIBUTED BY: QUALITY DRIVE SYSTEMS
P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
Continuously Variable Transmissions (CVTs)
The PWB50 drive and the TAS-99 driven respond to load requirements and changes in the ratio between the drive and driven pulleys so that the engine can maintain its peak power output. The PWB50 can handle up to 70 HP with proper calibration. All PWB50 series drive come with a 1 bore and keyway. The TAS-99 comes in 7/8 bore and a 3/16 keyway. Tuning kits are available for both drive and driven units. This CVT combination uses a 1-3/16 top width symmetrical belt.
PWB50 / TAS-99
Dimensions: A: 7.50" B: 6.75" C: 6.00 D: 9.50" Pulley Ratios: High: Low: .65:1 3.6:1 MODEL PWB50 TAS-99 WEIGHT 9.5 LBS. 9.0 LBS.
SAFETY NOTE:
BELT CHART: PWB 50/ TAS-99
PART # CIRUMFERENCE OUTSIDE DISTANCE CENTER
-NEVER OPERATE A TORQUE CONVERTER WITHOUT SUITABLE SAFETY SHIELD. -DO NOT RUN AN ENGINE EQUIPPED WITH A DRIVE PULLEY IF THE BELT IS NOT ENGAGED WITH THE DRIVEN PULLEY
QDS136 QDS137 QDS138 QDS139 QDS140 704098 QDS103
37.2" 39.13" 41.22" 41.89" 44.14" 46" 52.2"
8.27" 9.31" 10.42" 10.77" 11.95" 12.92" 16.1"
Belts supplied are made with high temperature neoprene compound w/ kevlar cord reinforcement. 1.3/16 top width symmetric belt. Center distances shown have a tolerance of +-1/8
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P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
780/770/790 BELT CHART
Some Universities and Colleges may still be using the 780, 770, or 790 Comet CVTs. Below is our belt chart to assist you. Please note that some belts are no longer in production. Check with QDS before locking in your center distance.
PART #
704042 QDS136 704043 QDS137 QDS138 QDS139 704045 704096 QDS140 704097 704066 704098 N/A QDS103
ALT. PART #
O.C.
34.85 37.2 38.06 39.13 41.22 41.89 42.22 43.06 44.14 44.63 45.69 46 49.6 52.5
790 CD
8.16" 9.41" 9.86 10.41 11.5 11.84 12.01 12.44 13 13.25 13.79 13.95 15.8 17.1
780 CD
N/A 8.59 9.05 9.62 10.73 11.08 11.25 11.7 12.25 12.5 13.05 13.21 15.1 16.35
770 CD
N/A N/A N/A 9.02 10.15 10.38 10.55 11.12 11.56 11.94 12.5 12.7 14.54 15.85
300624 300780 300625 300634 300637 300638 300627 300663 300641 301086 300642 301195 302663 N/A
CD: "CENTER DISTANCE" BETWEEN THE ENGINE CRANKSHAFT AND DRIVEN SHAFT OC: "OUTSIDE CIRCUMFERENCE" IS THE MEASUREMENT AROUND THE BELT
Made with high temperature neoprene compound w/ kevlar cord reinforcement. 1.3/16 top width symmetric belt. Use only the specified belt size for your CVT model center distance. Center distances shown have a tolerance of +-1/8
PROPER BELT FIT
Belts should not be too tight or too loose. Belt fit should allow a 1 deflection (see figure A). Belts with excessive wear or loose fit will require higher engine speed for engagement. Reduction in ground speed as well as pulling power will be noticed. Excessively tight belts will squeal, creep, and overheat.
Figure A
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F-N-R TRANSMISSION (SNPT)
SNPT power transmissions are unique in that they provide dual oil bath clutches for longer life even with frequent shifting. Unique dynamic forward/neutral/reverse shifting. SNPT transmissions are the longest lasting, most field serviceable, versatile, and economic single speed FNR transmission. SNPT has been in business for over 50 years and has thousands of units currently working in construction, material handling, and agricultural applications around the world.
Front View
L
FEATURES:
UNIQUE DUAL CLUTCH DESIGN SHIFT ON THE FLY FORWARD OR REVERSE, UNDER LOAD COMPACT CONSTRUCTION EASY MAINTENANCE RUGGED DESIGN FITS ALL 780 SERIES DRIVENS
I*
J*
DIMENSIONS
(INCHES)
I
A: B: C: D: E: F: G:
K
4" 9" .652" 8.69" 4.37"** 2" 1"
H: I: J: K: L: M: N:
.75" 3/16 X 3/32"* 1/4 X 1/8"* 4.25" 1.25" 6" 3"
SPECIFICATIONS:
MAX H.P.: MAX INPUT TORQUE: REDUCTION FORWARD: REDUCTION REVERSE: MAX SIDE LOAD: OIL CAPACITY (PINTS): SHIFTING EFFORT: WEIGHT: 16 72 FT. LBS. 2.47:1 2.47:1 400 FT. LBS 1.65 18 FT. LBS. 23.5 (ALUM. CASE)
Side View
*KEYWAY DIMENSIONS **INPUT SHAFT IS THREADED FOR END BOLT (5/16X18-2B-THD.) FOR DRIVEN SHAFT.
DESCRIPTION
SNPT FNR TRANSMISSION SNPT LEVER ARM, 12 X5/8 W/ 3/16 KEYWAY (OPTIONAL) DISTRIBUTED BY: QUALITY DRIVE SYSTEMS
PART#
5101B-QD 14AX-5104
P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
CHAINS
#40, 41, 420R Chains
PRODUCT DESC. CHAIN SIZE *
10 FT. BOX W/2 CONN. LINKS
BULK REELS PER FOOT**
CONN. LINKS
OFFSET LINKS
#40 #41 #420
4014-10 4023-10 4035-10
4014 4023 4035
4015 4024 4036
4016 4025 4037
Chain Strength & Dimensions
Chain Number
Pitch
Roller Diameter
Between Inner Plates
Pin Diameter
Average Tensile
Lbs. per foot
__#40 __#41
__#420
1/2 1/2
1/2
0.312 0.306
0.306
1/3 1/4
1/4
0.156 0.141
0.156
3,700 2,000
3,700
0.41 0.27
0.38
Chain Deflector Part No. 1810
Chain Deflector is set with mounting holes which make it universally adaptable to all small engines. Chain should be kept in good shape at all times; in case of a break, however, this deflector will help to prevent broken chain from flying out and causing injury.
Universal Chain Breaker Part No. 4899
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STEERING ACCESSORIES
Steering Wheel
Choice of 2 Diameters : 10 & 12 One Piece Construction Chrome-Plated Quality Steel Solvent Proof Neoprene Molded Finger Groves
10" Diameter #1801 12" Diameter #1805
Butterfly Steering Wheel
Non-Flexing, Strong Tempered Aluminum Alloy Choice of Black Anodized or High Buffed Finish Molded Neoprene Grips Two mounting position for personal taste
Anodized Black Polished Aluminum
# 2293-BLK # 2294
Complete Steering Shaft & Hub Assy.
#1868 (22, 24, 25, 28, 34 Lengths) Complete Kits includes all the following parts:
1) 2) 3) 4)
8322 Snap Ring (1) 8132 Hub Splined (1) 8418 Cotter Pin (1) 8528 Hex Nut Slotted (1)
5) 8412 Bolt w/ Hole (3) 6) 8419 Cotter Pin (3) 7) 8527 Hex Nut (3)
14 Rack & Pinion
# QDS111-14
7075-T6 Polished Aluminum Housing Rod End Bearing 1-1/2 Turns, End to End (5 Travel) Includes U-Joint & 5/8x1-1/2 Splined Shaft
11 Rack & Pinion also available
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SAFETY EQUIPMENT
3 X 2 5-Point Dune Buggy Harness
3 Lap Harness: bolt-in reverse draw 2 twin wrap-around shoulder harness, sewn-in w/ lap belt Quick lap snap-in design Sewn in shoulder pads for extra support Available in Black, Blue, Red, Grey, & Purple w/ built in latch guard
551812.9LG
3 5-Point Snap-In Latch Style Seatbelt
3 Lap & Shoulder Harness Lap snap-in with built-in latch guard Snap-in anti-submarine bolt-in shoulder harness Available in Black, Blue, Red, Grey, & Purple
332710.L
Helmet Support
PN
040009 Black 040002 Red 040003 Blue
Arm Restraints
605000
Available in Black, Blue, Red, Grey, & Purple
**All belts offered by QDS meet or exceed the revised SFI 16-1 testing specification (2008-09 Mini-Baja rule requirement) ** DISTRIBUTED BY: QUALITY DRIVE SYSTEMS
P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
ACCESSORIES
Steering Wheel Cap Assembly Fits either 1-1/2 or 1-5/8 bolt circle, or practically any make of steering wheel. "B" TYPE SPROCKETS FOR 40 CHAIN
#40 CHAIN 8 10 11 3/4" BORE 1919 1920
1877
"B" TYPE SPROCKET FOR 40/41 CHAIN
#40/41 CHAIN TEETH 10 11 12 13 14 3/4" BORE PART# 2110 2111 2112 2113 2114
**MORE SPROCKETS AVAILABLE UPON REQUEST **
Engine Kill Button Switch This spring loaded ground contact switch fits both 7/8" and 1" frame or handle bars. A 36" shielded wire, with a spade type end fitting is assembled for fast installation.
1721
COMET 780/790/770 ACCESSORY PARTS
(ONLY TO BE USED WITH COMET CLUTCHES)
300919C Retaining ring for Comet 780 driver and 770/780/790 driven units 301148C Key for 780 drivers 203832C 3/16 key for 770/780/790 drivens
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300013C 32 Degree reinforced cam for all Comet 770/780/790 driven units
COMING SOON
TUNING KITS FOR:
PWB50 DRIVER LP2 DRIVE TAS-99 DRIVEN
DANA TRANSAXLE:
HANDLE UP TO 25 H.P. WEIGHT: 34.5 LBS. 10.15:1 REDUCTION W/ LIMITED SLIP DIFFERENTIAL
TSS-98 DRIVEN:
10-3/4 DIAMETER DRIVEN 7/8 & 1 BORE INVERSE CAM DESIGN
Dont see it? Just ask. Quality Drive Systems prides itself in supplying the market with a wide range of power transmissions components to meet your needs. Some of the products we offer include:
DISTRIBUTED BY: QUALITY DRIVE SYSTEMS
P.O. BOX 6910, ALHAMBRA, CALIFORNIA 91802-6910, TEL (626) 293 5770 / FAX (626) 281 - 3392
TERMS AND POLICIES
PRICES & SPECIFICATIONS: All goods sold in the state of California are subject to state sales tax where applicable. All prices and specifications are subject to change without notice. We cannot guarantee that all items listed in our catalog will continue to be available PAYMENT: We accept all major credit cards as well as bank wire transfers. Only U.S. University P.O.s accepted. On order for University POs to be accepted an authorized hard copy of the University P.O. must be submitted by fax or mail. RETURNS: All returns; a copy of the original invoice must accompany merchandise, within 30 days of invoice date. All returns must be authorized by QDS first. We will not refuse any reasonable claim: however, we reserve the right to apply a 15% restocking fee on items returned. GUARANTEE: All QDS products offered are guaranteed to be free from defects in workmanship and material. Credit, repair, or replacement, is given after QDS inspection. Final decision on all returned merchandise remains with QDS. BACK ORDERS: If there is to be any delay in filling your order, you will be notified or the item(s) will be indicated as back ordered (B/O) on your invoice. FREIGHT CLAIMS: All merchandise is carefully packed and shipped in good condition. Any claims, damage to goods, or shortages should be made to the courier immediately upon receipt. All packing materials must be presented to the carrier for the claim. SHIPPING METHODS: QDS primarily ships using UPS Ground service unless otherwise specified. Other methods/couriers include overnight, 2-Day, 3-Day, FedEx, DHL, & Parcel Post.
Questions? Comments? E-mail: mikeqds@ahoo.com
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