Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
recchetta [2010/11/27 14:41]
gregg [Wheel-mounted Pulley]
recchetta [2014/05/16 12:35] (current)
Line 1: Line 1:
-====== Overview ======+====== ​Recchetta ​Overview ======
 {{gallery>:​vehicles:​img_0128.jpg }} {{gallery>:​vehicles:​img_0128.jpg }}
  
Line 10: Line 10:
 This bike is also featured on [[http://​www.evalbum.com/​preview.php?​vid=2249|EVAlbum]]. This bike is also featured on [[http://​www.evalbum.com/​preview.php?​vid=2249|EVAlbum]].
  
-===== Major News ===== +===== Public Discussions ​===== 
-November 27th, 2010: Adding updates & revisions +{{fbc>​like=y}}
-===== Power Assist Highlights =====+
  
 +===== Power Assist Highlights =====
   * ~15 lbs - all equipment, minus battery (including the gas motor)   * ~15 lbs - all equipment, minus battery (including the gas motor)
   * 11 lbs - weight of 24v/20ah LiFePO4 (ping brand) battery   * 11 lbs - weight of 24v/20ah LiFePO4 (ping brand) battery
   * Assembled with roughly $450 in parts and materials (minus battery & gas motor; see details below)   * Assembled with roughly $450 in parts and materials (minus battery & gas motor; see details below)
 +  * Gasoline engine'​s emissions are nearly half that of your typical highway legal motorcycle. ​
 ===== Original Design (electric only) ===== ===== Original Design (electric only) =====
  
Line 28: Line 28:
  
 ===== Ride Highlights ===== ===== Ride Highlights =====
- 
-==== April, 2009 ==== 
 I've thrown a [[http://​gregg.berkholtz.net/​blog/​archives/​41-Gas...its-so-dirty,​-but-oh-so-much-fun!.html#​extended|blog posting]] up about the gas setup. I've thrown a [[http://​gregg.berkholtz.net/​blog/​archives/​41-Gas...its-so-dirty,​-but-oh-so-much-fun!.html#​extended|blog posting]] up about the gas setup.
 +----
 In-short, I've now completed two long-distance rides (256 miles & 302 miles) over the Oregon coastal range via Hwy 30, 47 & 101...and a variety of in-town gas-assisted rides. While I'm averaging roughly 250MPG, my biggest complaint is a need for something better than the .5 liter built-in fuel tank; stopping to refill from my MSR bottles, every ~33-35miles,​ gets old, fast. In-short, I've now completed two long-distance rides (256 miles & 302 miles) over the Oregon coastal range via Hwy 30, 47 & 101...and a variety of in-town gas-assisted rides. While I'm averaging roughly 250MPG, my biggest complaint is a need for something better than the .5 liter built-in fuel tank; stopping to refill from my MSR bottles, every ~33-35miles,​ gets old, fast.
 +----
 In general, "I need a larger chainring"​ was the inital thought as I turned the electric'​s throttle up on my first electric-assisted ride, while my legs frantically "​twitched"​ at over 115 RPM just trying to keep up. Remember; this system was designed to facilitate a power-assist for an existing bike, not to create a lightweight motorcycle. As for the rest...well,​ a silly ear-to-ear grin just refuses to go away :-) In general, "I need a larger chainring"​ was the inital thought as I turned the electric'​s throttle up on my first electric-assisted ride, while my legs frantically "​twitched"​ at over 115 RPM just trying to keep up. Remember; this system was designed to facilitate a power-assist for an existing bike, not to create a lightweight motorcycle. As for the rest...well,​ a silly ear-to-ear grin just refuses to go away :-)
   * I rode about 20 miles, from Portland Oregon'​s Burnside Bridge eastward to 143rd & SE Stark, and then returned home to 20th and W Burnside. For a trip which, on a good day, normally takes 45 minutes. The power-assisted ride, with ~20MPH gusty gorge headwinds, was completed in just barely under 20 minutes!   * I rode about 20 miles, from Portland Oregon'​s Burnside Bridge eastward to 143rd & SE Stark, and then returned home to 20th and W Burnside. For a trip which, on a good day, normally takes 45 minutes. The power-assisted ride, with ~20MPH gusty gorge headwinds, was completed in just barely under 20 minutes!
Line 264: Line 262:
 |Dry weight - Total - Including Mount Kit | 12 lbs| |Dry weight - Total - Including Mount Kit | 12 lbs|
 ==== Performance Curve ==== ==== Performance Curve ====
-{{:​vehicles:​eho25-performancecurve.png|}}+{{:​vehicles:​eho25-performanceinfo.png?480|}} 
 +==== Emissions ==== 
 +Compliant with EPA Phase 2 (Class IV) and CARB tier II emission regulations. 
 + 
 +In translation,​ this means that the EOH25 engine is EPA-permitted to exhaust less than 50 grams of HC+NOx/CO per 1kW/hr of generated power. 
 + 
 +Put into perspective,​ comparing the average EPA emissions requirements of the bike VS common road vehicles: 
 +^ Type/Model ^ Mileage((fuel economy)) ^ HC ^ NOx ^ CO ^ CO2 (Petrol) ^ CO2 (LNG) ^ CO2 (COAL) ^ Notes ^  
 +| Recchetta Bike | 246MPG((measured at 0.5KW/hr)) | 0.623g/km | 0.623g/km | 0.623g/km |  | 6.3g/​km((based upon the 24V/20A battery pack's measured capacity of 38 miles per charge, through city driving)) |  12.6g/​km((based upon the 24V/20A battery pack's measured capacity of 38 miles per charge, through city driving)) | Measured: ran at between a average of 0.25-0.5KW per hour for a total of 10 hours, consuming an exact 2 gallons of fuel. Based upon fuel consumption alone, actual emissions are most certainly lower than these estimates (by a factor of 2-4), but until I can measure actual emissions the best I can do is use the EPA's maximum manufacturer'​s ratings for this engine. | 
 +| Motorcycle: 2006-2009 | 50MPG((Manufacturer Rating)) | 1g/km | 1.4g/km | 12g/km |  |  |  | EPA maximum allowed emissions | 
 +| Motorcycle: 2010+ | 50MPG((Manufacturer Rating)) | 1g/km | 0.8g/​km ​ | 12g/​km ​ |  |  |  | EPA maximum allowed emissions | 
 +| Mercedes Smart Car (2006) | 45MPG((measured)) | 1.08g/km | 3.6g/km | 244g/​km ​ |  |  |  | Measured fuel economy from personally-owned vehicle with over 50K miles. EPA measured was 49MPG. Assuming [[http://​www.epa.gov/​otaq/​standards/​light-duty/​tier2stds.htm|maximum emissions]] from EPA's [[http://​www.greenercars.org/​highlights10.pdf|Tier 2, Bin 5]] classification. | 
 +| Ford F150 Pickup (2010+ | 25MPG((Manufacturer Rating)) |  |  |  |  |  |  | EPA measured 25MPG | 
 +| [[http://​en.wikipedia.org/​wiki/​Motor_vehicle_emissions#​Passenger_car_emissions_summary|EPA Estimated Emissions]] per vehicle in July 2000 |  | 4.48g/​km((1.6km*2.8g/​mi)) | 2.224g/​km((1.6km*1.39g/​mi)) | 413g/km ((1.6km*258g/​mi)) | 258 g/km |  |  | Actual average vehicle emissions, as estimated by the EPA in July of 2000 | 
 +| Tesla Roadster | 128Wh/​km((based upon [[http://​en.wikipedia.org/​wiki/​Tesla_Roadster#​Energy_efficiency|Tesla Roaster]])) |  |  |  |  | 63g/km | 126g/km | Estimating emissions of electric vehicles, through their [[http://​en.wikipedia.org/​wiki/​United_States_emission_standards#​Electricity_generation|demands upon power plants]]. Maximum permitted regional gas-turbine plant emissions limit is 1,​100lbs/​MWhr. Divide 1MW/​.0128=7,​812.5km/​MWhr,​ now divide 1,​100lbs/​7812.5MWhr=0.1408lbs of CO2 exhaust emissions per 1km traveled. Maximum permitted regional coal plant emissions limit is 2,​200lbs/​MWhr,​ so double the gas-fired plant amount. |  
 + 
 +=== EPA Phase 2 === 
 +EPA Phase II handheld engine classes are as follows: 
 +^ Class ^ EPA HC+NOx ^ CARB CO ^ Engine Sizes ^ 
 +| III | 50 g/kW-hr((in grams/​kilowatt-hour)) | 72 g/kW-hr | engines less than 20 cc in displacement | 
 +| IV  | 50 g/kW-hr | 72 g/kW-hr | engines equal to or greater than 20 cc and less than 50 cc in displacement | 
 +| V   | 72 g/kW-hr | 72 g/kW-hr | engines equal to or greater than 50 cc in displacement | 
 + 
 +=== Notes === 
 +Until now, because of the non-road engines’ relatively low overall contribution to air pollution, emission control for these engines has not been a major design consideration. Consequently,​ these engines are not as clean as highway vehicles, which have been subject to regulatory controls for more than 20 years. Emissions from nonroad engines contribute as much as 15 to 20 percent of pollution in cities across the United States. Those emissions, described above, include hydrocarbons,​ nitrogen oxides, carbon monoxide, and carbon dioxide.  
 + 
 +**Hydrocarbons** (HC) are unburned or partially burned fuel molecules that react in the atmosphere to form ground-level ozone, a major component of smog. Some hydrocarbons are toxic and may cause cancer or other health problems. Hydrocarbon pollution from nonroad engines also occurs as fuel evaporation when gasoline vapors are forced out of the fuel tank (for instance, during refueling) or when gasoline spills and evaporates. 
 + 
 +**Nitrogen oxides** (NOx) result from subjecting nitrogen and oxygen in the air to the high temperature and high pressure conditions in an internal combustion engine. Nitrogen oxides react with hydrocarbons in the atmosphere to form ground-level ozone. They also contribute to acid rain. 
 + 
 +**Carbon monoxide** (CO) is a colorless, odorless, poisonous gas that results from incomplete fuel combustion. 
 + 
 +**Carbon dioxide** (CO2) is the ultimate product from burning carbon-based fuel including gasoline. Carbon dioxide does not directly impair human health, but it is a “greenhouse gas” that contributes to the potential for global warming. As engine fuel economy declines, carbon dioxide emissions increase.
  
 ====== Links & Inspirations ====== ====== Links & Inspirations ======
Line 289: Line 319:
 Typical "​resting"​ cadence is around 75 RPM Typical "​resting"​ cadence is around 75 RPM
  
 +===== Rohloff Sprocket RPMs =====
 +
 +Using the online [[http://​www.sheldonbrown.com/​gears/​index.html|calculator]].
 +
 +For a 26" wheel, with the reduction'​s output shaft at 240RPM & the Rohloff in high (ratio: 1.47) gear:
 +^  ^ 9T Output ^ 15T Output ^ 20T Output ^
 +^ 13T Rohloff Cog | 18.8 MPH | 32.4 MPH | 41.8 MPH |
 +^ 15T Rohloff Cog | 16.4 MPH | 27.2 MPH | 38.4 MPH |
 +^ 17T Rohloff Cog | 14.4 MPH | 24 MPH | 32 MPH |
 +
 +For a 26" wheel, with the reduction'​s output shaft at 240RPM & the Rohloff in direct (ratio: 1) gear:
 +^  ^ 9T Output ^ 15T Output ^ 20T Output ^
 +^ 13T Rohloff Cog | 12.8 MPH | 21.4 MPH | 28.6 MPH |
 +^ 15T Rohloff Cog | 11.2 MPH | 18.6 MPH | 24.8 MPH |
 +^ 17T Rohloff Cog | 9.8 MPH | 16.4 MPH | 21.8 MPH |
 +
 +For a 26" wheel, with the reduction'​s output shaft at 240RPM & the Rohloff in low (ratio: 0.28) gear:
 +^  ^ 9T Output ^ 15T Output ^ 20T Output ^
 +^ 13T Rohloff Cog | 3.6 MPH | 6 MPH | 8.0 MPH |
 +^ 15T Rohloff Cog | 3.2 MPH | 6.2 MPH | 7 MPH |
 +^ 17T Rohloff Cog | 2.8 MPH | 4.6 MPH | 6 MPH |
 ====== Lessons Learned & Parting Thoughts ====== ====== Lessons Learned & Parting Thoughts ======
  
recchetta.1290897695.txt.gz · Last modified: 2014/05/16 12:35 (external edit)
Back to top
CC Attribution-Noncommercial-Share Alike 3.0 Unported
chimeric.de = chi`s home Valid CSS Driven by DokuWiki do yourself a favour and use a real browser - get firefox!! Recent changes RSS feed Valid XHTML 1.0