Blufly. Final Design Review Spring Michael Lovett Matt Good Anthony Glick Anthony Gerstenberger

Transcription

1 Blufly Final Design Review Spring 2002 Michael Lovett Matt Good Anthony Glick Anthony Gerstenberger

2 Overview System level design Test results Road blocks Safety Final cost and weight Marketability Questions

3 System-level Design Components Hand throttle and brake lever Honda GX31 engine Seat post clamps 16:1 Gear ratio, timing belts and pulleys, L-Series used Front fork manufactured from 4130 tube steel Caliper brake 6.5in. rubber wheels Wood Footboard

4 Test Results From Prototype Performance - Speed bumps -Slalom Speed 9.3 mph Braking 47 lbs Assembled in 2min - No tools needed

5 Road Blocks Pulley system Engine mount

6 Belt Selection Graph Design and Application of Small Standardized Components Data Book 757

7 Pulley System Modifications Initially used XL series pulleys Weighed 9lbs less than L series Cost No machining needed

8 Pulley System Modifications Changed to L series Reduced weight by machining off excess material (5lbs) Had to make modifications to frame No sign of belt fatigue

9 Engine Mount.060 sheet metal After testing, engine mount casting broke due to vibrations Will create new engine mount on chassis New system provides more comfort to rider

10 Packaging Preliminary design used sleeping bag Foam was used to cover engine and pulleys Final design we will use a duffle bag with shoulder straps Will decrease weight by 3lbs

11 Safety Kill switch Safety shield to cover engine and pulley system Stickers are applied to caution of hot areas, moving parts and pinch points Reflection strips are place on the front, side, and rear of scooter Require the use of helmet and knee pads Kickstand for ease of one person to assemble and fill gas tank

12 Final Weight Scooter frame 8.0 lbs. measured Engine Mount 0.9 lbs. measured Honda GX-31 engine with clutch housing 10.1 lbs. measured Steering Column 2.6 lbs. measured Wooden footwell and mounting hardware 1.0 lbs. measured Wheels (combined) 3.8 lbs measured Brake system 0.4 lbs. measured Timing Belt Pulleys 6 lbs. measured Front Fork & axle 1.4 lbs. measured Headset 0.4 lbs. measured Rear axle 0.3 lbs. measured Vibrational Mounts 1.0 lbs. measured Flange Bearings 0.2 lbs. measured Seat Clamps 0.2 lbs. measured Idler Shaft 0.5 lbs. measured Throttle 0.4 lbs. measured Timing Belts 0.3 lbs. measured Carrying case 1.0 lbs. measured Engine guards 0.5 lbs. measured Kill Switch 0.1 lbs. measured Foam Padding 0.4 lbs. measured nuts & bolts 0.5 lbs. measured Tools 0.5 lbs. measured Total Weight 40.8 lbs.

13 Part Final Cost Quantity Per Scooter Price (Includes 15% Discount) Scooter frame $63.50 $53.98 Honda GX-31 engine $ $ Clutch $ Tooth Timing Belt Pulleys $33.00 $ Tooth Timing Belt Pulleys $7.71 $12.34 Wheels $18.00 $30.60 Steering assembly material 6ft. 7/8" OD & 3 ft 1" 0D $15.34 Braking components (handle, caliper and cable) 1@ $23.50 $ in. x 10 in. Piece of Pine for footboard $3.00 $2.55 Belts $6.07 $4.86 Flange Bearing Mounts (idler Shaft) $9.18 $ /8" OD Steel Rod (Axle/Idler Shaft) 3$.80 $3.04 Rubber Washers $0.07 $0.45 Carrying Case $5.00 $4.25 Seat Clamps $7.00 $11.90 Nuts & Bolts $0.05 $2.00 Machining/Assembly Costs Based off of Sheet Dr. Holiday provided $88.70 Total Cost $533.74

14 Why Ours and Not Yours Quick assembly time - Under 2 min Safe 3 inch wide wheels for good stability at any speed Adjustable steering column Fuel efficient Light weight 40.8lbs

15 Why Ours and Not Yours Cool fly design Quality, well built product Receive free carrying case Good for beer runs - Ask Tony Glick Attracts the women - Ask Tony Glick

16 Schedule Done!!!

17 Questions?