Difference between revisions of "Honda SL70"
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{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}} | {{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}} | ||
{{Infobox Motorcycle | {{Infobox Motorcycle | ||
|name = Honda SL70 | |name = '''Honda SL70''' | ||
|image = | |image = | ||
|aka = | |aka = SL 70 | ||
|manufacturer = [[Honda]] | |manufacturer = [[Honda]] | ||
|parent_company = | |parent_company = | ||
|production = | |production = 1971 | ||
|model_year = | |model_year = | ||
|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = | |class = | ||
|engine = | |engine = single cylinder, four-stroke | ||
|bore_stroke = | |bore_stroke = | ||
|compression = | |compression = | ||
|top_speed = | |top_speed = | ||
|power = | |power = 6.44 HP (4.8 KW) @ 9500RPM | ||
|torque = | |torque = | ||
|ignition = | |fuel_system = Carburetor | ||
|spark_plug = {{sparkplug|C7HSA}} 71-72 , '73 | |ignition = | ||
|battery = {{battery|6N2A-2C-3}} '73<br />{{battery|6N2A-2C}} 71-72 | |spark_plug = {{sparkplug|NGK C7HSA}} 71-72 , '73 | ||
|transmission = | |battery = {{battery|6N2A-2C-3}} YUASA '73<br />{{battery|6N2A-2C}} 71-72 | ||
|frame = | |transmission = Gear box: 4-speed <br> | ||
|suspension = | Final Drive: [[chain]] <br> | ||
|brakes = | |||
|frame = | |||
|suspension = | |||
|brakes =Front: Drum <br>Rear: Drum | |||
|front_tire = {{tire|2.50-16}} 71-72 , '73 | |front_tire = {{tire|2.50-16}} 71-72 , '73 | ||
|rear_tire = {{tire|2.75-14}} 71-72 , '73 | |rear_tire = {{tire|2.75-14}} 71-72 , '73 | ||
|rake_trail = | |rake_trail = | ||
|wheelbase = | |wheelbase = | ||
|length = | |length = | ||
|width = | |width = | ||
|height = | |height = | ||
|seat_height = | |seat_height = | ||
|dry_weight = | |dry_weight = | ||
|wet_weight = | |wet_weight = | ||
|fuel_capacity = | |fuel_capacity = | ||
|oil_capacity = | |oil_capacity = | ||
|fuel_consumption = | |fuel_consumption = | ||
|turning_radius = | |turning_radius = | ||
|related = | |related = [[Honda SL90]] | ||
|competition = | |competition = [[Yamaha JT-1]] | ||
}} | }} | ||
The '''[[Honda]] SL70''' was a single cylinder, [[four-stroke]] Naked [[motorcycle]] produced by [[Honda]] from 1971 to 1973. Claimed [[horsepower]] was 6.44 HP (4.8 KW) @ 9500 RPM. | |||
==History== | |||
In 1970 Honda wasn’t going to let [[Yamaha]] cash in on the new mini-cycle craze with their | |||
[[Yamaha JT-1|JT1MX]], so [[Honda]] Motors Corp’s design facility in Torrance, California came up with the SL70, a scaled down 70cc version of the on-off road Honda SL motorcycle line . | |||
Coincidentally, the SL70 closely resembled the 1969 [[Honda SL90|SL90]], down to the tank/frame design and slanted cylinder configuration. In standard Honda fashion, the SL70 looked good, and seemed ready to take on the Yamaha mini-enduro in all areas. | |||
Unfortunately a few typical Honda design features of the time, like excessive weight and over-engineering cursed the SL70 with a dry weight of 153 lbs, versus the relatively light weight of its competitor, the Yamaha Mini-Enduro at 121 lbs, wet. | |||
Not to say the SL70 was a pig, as thousands of die hard Honda fans snapped up the mild little 70cc buggers for their kids, and even themselves, under the guise of a “pit bike”. And of course, all the Honda hop up aftermarket folks like Poweroll and Webco produced kits to up the SL from its anemic 6.5 horsepower to fire-breathing configurations with high lift cams, big carbs, stroked cranks, big bore kits, etc. Even a Poweroll 110cc kit was offered, that required the owner to bore the cases, stroke the crankshaft, and run a paper-thin steel cylinder liner. Such was the life of a hopped up Honda 4 stroke motosport owner, who sacrificed anvil like reliability for performance. | |||
Seeing that the SL70 was to compete against its closest rival, the [[Yamaha JT-1|Mini-Enduro]], Honda did see fit to equip the SL70 with better forks and shocks than the Yamaha, and the SL came in a full street legal configuration, unlike the Yamaha which would wait to release a lighted version of the [[Yamaha JT-2|JT2MX]] in 1972. | |||
Compared to the Yamaha Mini-Enduro, the SL70 was a well constructed, solid Honda that suffered from excessive weight and higher maintenance than its two-stroke rival. As one who lived the period, and competed against the Honda, the only bad thing I can say about it was the Honda level of thrash-ability that allowed riders to run the poor little bike on the ragged edge of with no-maintenance, that would ultimately cause the bike to explode, and render it a useless expensive door stop. | |||
The SL70 lived on until 1975, renamed the [[Honda XL70|XL70]], and was actually replaced by the [[Honda XR75|XR75]] in 1973, a totally different machine, with a vertical cylinder configuration, and a lighter weight of 140 lbs. 1973 was a milestone year for Honda, with the release of the [[Honda CR250|CR250]] and [[Honda CR125R|CR125 MX]] machines. After ’73, Honda never looked back. | |||
==Engine== | |||
The engine was a [[air cooled]] single cylinder, four-stroke. Fuel was supplied via a overhead cams (ohc). | |||
==Drive== | |||
The bike has a 4-speed transmission. | |||
==Chassis== | |||
Stopping was achieved via Drum in the front and a Drum in the rear. | |||
==1971 - 1973 Honda SL 70== | |||
Honda's SL 70, manufactured between 1971 and 1973, had a 4 speed transmission and a 4 stroke air cooled single cylinder, single overhead cam engine. | |||
The '''Honda SL70''' is a [[motorcycle]] produced by [[Honda]] from 1971 to 1973. | The '''Honda SL70''' is a [[motorcycle]] produced by [[Honda]] from 1971 to 1973. | ||
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[[Category:Honda motorcycles|Honda SL70K1]] | [[Category:Honda motorcycles|Honda SL70K1]] | ||
[[Category:Honda SL series]] | [[Category:Honda SL series]] | ||
[[Category:1970s motorcycles]] | [[Category:1970s motorcycles]] | ||
Revision as of 19:33, 27 May 2019
| Manufacturer | Honda |
|---|---|
| Also called | SL 70 |
| Production | 1971 |
| Engine | single cylinder, four-stroke |
| Horse Power | 6.44 HP (4.8 KW) @ 9500RPM |
| Fuel system | Carburetor |
| Sparkplug | NGK C7HSA 71-72 , '73 |
| Battery | 6N2A-2C-3 YUASA '73 6N2A-2C 71-72 |
| Transmission | Gear box: 4-speed Final Drive: chain |
| Brakes | Front: Drum Rear: Drum |
| Front Tire | 2.50-16 71-72 , '73 |
| Rear Tire | 2.75-14 71-72 , '73 |
| Related | Honda SL90 |
| Competition | Yamaha JT-1 |
| Manuals | Service Manual |
| Tech Specs · Brochures · Reviews · Ads · Videos | |
The Honda SL70 was a single cylinder, four-stroke Naked motorcycle produced by Honda from 1971 to 1973. Claimed horsepower was 6.44 HP (4.8 KW) @ 9500 RPM.
History
In 1970 Honda wasn’t going to let Yamaha cash in on the new mini-cycle craze with their JT1MX, so Honda Motors Corp’s design facility in Torrance, California came up with the SL70, a scaled down 70cc version of the on-off road Honda SL motorcycle line .
Coincidentally, the SL70 closely resembled the 1969 SL90, down to the tank/frame design and slanted cylinder configuration. In standard Honda fashion, the SL70 looked good, and seemed ready to take on the Yamaha mini-enduro in all areas.
Unfortunately a few typical Honda design features of the time, like excessive weight and over-engineering cursed the SL70 with a dry weight of 153 lbs, versus the relatively light weight of its competitor, the Yamaha Mini-Enduro at 121 lbs, wet.
Not to say the SL70 was a pig, as thousands of die hard Honda fans snapped up the mild little 70cc buggers for their kids, and even themselves, under the guise of a “pit bike”. And of course, all the Honda hop up aftermarket folks like Poweroll and Webco produced kits to up the SL from its anemic 6.5 horsepower to fire-breathing configurations with high lift cams, big carbs, stroked cranks, big bore kits, etc. Even a Poweroll 110cc kit was offered, that required the owner to bore the cases, stroke the crankshaft, and run a paper-thin steel cylinder liner. Such was the life of a hopped up Honda 4 stroke motosport owner, who sacrificed anvil like reliability for performance.
Seeing that the SL70 was to compete against its closest rival, the Mini-Enduro, Honda did see fit to equip the SL70 with better forks and shocks than the Yamaha, and the SL came in a full street legal configuration, unlike the Yamaha which would wait to release a lighted version of the JT2MX in 1972.
Compared to the Yamaha Mini-Enduro, the SL70 was a well constructed, solid Honda that suffered from excessive weight and higher maintenance than its two-stroke rival. As one who lived the period, and competed against the Honda, the only bad thing I can say about it was the Honda level of thrash-ability that allowed riders to run the poor little bike on the ragged edge of with no-maintenance, that would ultimately cause the bike to explode, and render it a useless expensive door stop.
The SL70 lived on until 1975, renamed the XL70, and was actually replaced by the XR75 in 1973, a totally different machine, with a vertical cylinder configuration, and a lighter weight of 140 lbs. 1973 was a milestone year for Honda, with the release of the CR250 and CR125 MX machines. After ’73, Honda never looked back.
Engine
The engine was a air cooled single cylinder, four-stroke. Fuel was supplied via a overhead cams (ohc).
Drive
The bike has a 4-speed transmission.
Chassis
Stopping was achieved via Drum in the front and a Drum in the rear.
1971 - 1973 Honda SL 70
Honda's SL 70, manufactured between 1971 and 1973, had a 4 speed transmission and a 4 stroke air cooled single cylinder, single overhead cam engine.
The Honda SL70 is a motorcycle produced by Honda from 1971 to 1973.
1971-72 SL70K0
- Available three colors: Summer Yellow, Aquarius Blue, and Light Ruby red
- The Honda emblem was blue with a blue and red logo reading "SL70"
- On the yellow bike, the tank stripe was black; but on the other colors the stripe was white
- Engine: 72cc OHC single cylinder
- Transmission: 4-speed with manual clutch
- Speedometer was optional
- Serial number began SL70-1000001
- Spark Plug: NGK C7HSA
1973 SL70K1
- Available colors: Candy Riviera Blue, Fire Red, and Candy Yellow
- The fuel tank and "70" decals were yellow
- Engine: 72cc OHC single cylinder
- Transmission: 4-speed with manual clutch
- A speedometer was now standard
- The serial number began SL70-1100001
1974
- In 1974 it was called the XL70 although it was basically the same bike.
See Also
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