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Difference between revisions of "ATK 605"
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[[ | {{Motorcycle | ||
|name = ATK 605 | |||
|photo=1996 ATK 605.jpg | |||
|aka = | |||
|manufacturer = ATK | |||
|parent_company = | |||
|production = 1992 - 1998 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = Enduro | |||
|engine = air-cooled, four-stroke, Rotax single cylinder, DOHC, 4 valves | |||
|bore_stroke = 96.5mm x 96.5mm | |||
|compression = 9.5:1 | |||
|top_speed =98 mph | |||
|power = | |||
|torque = | |||
|ignition = | |||
|spark_plug = | |||
|battery = | |||
|transmission = Gear box: 5-speed, manual <br> | |||
Final Drive: [[chain]] <br> | |||
Clutch: wet multi-disc, manual <br> | |||
|frame = | |||
|suspension =Front: 40mm WP upside-down telescopic fork <br> | |||
Rear: monoshock | |||
|brakes =Front: single 260mm disc, 2-piston caliper, Brembo <br>Rear: single 220mm disc, Brembo | |||
|front_tire = 80/100-21 | |||
|rear_tire = 110/100-18 | |||
|rake_trail = | |||
|wheelbase = | |||
|length = | |||
|width = | |||
|height = | |||
|seat_height = 36.5 inches (927 mm) | |||
|dry_weight = | |||
|wet_weight = 129.0 kg | |||
|fuel_capacity = | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[ATK]] 605''' was a air-cooled, four-stroke, Rotax single cylinder, DOHC, 4 valves Enduro [[motorcycle]] produced by [[ATK]] between 1992 and 1998. | |||
==Engine== | |||
A 96.5mm [[bore]] x 96.5mm [[stroke]] result in a [[displacement]] of just 598.0 cubic centimeters. | |||
==Drive== | |||
The bike has a 5-speed, manual transmission. Power was moderated via the wet multi-disc, manual. | |||
==Chassis== | |||
It came with a 80/100-21 front [[tire]] and a 110/100-18 rear tire. Stopping was achieved via single 260mm disc, 2-piston caliper, Brembo in the front and a single 220mm disc, Brembo in the rear. The front suspension was a 40mm WP upside-down telescopic fork while the rear was equiped with a monoshock. | |||
==Overview== | |||
[[ATK]]'s new 605 Thumper and its revolutionary single-sided frame had passed the extreme flex test. It is hard to comprehend how a frame that connects the headset with only the lower-left [[swingarm]] pivot could possibly be as rigid as an ordinary frame, but it is. And that's only the beginning: Its design also allows a full 13.2 inches of rear-wheel travel, but with a relatively low 36.5-inch seat height. Plus, it's 10 pounds lighter than the conventional frame it replaces. | [[ATK]]'s new 605 Thumper and its revolutionary single-sided frame had passed the extreme flex test. It is hard to comprehend how a frame that connects the headset with only the lower-left [[swingarm]] pivot could possibly be as rigid as an ordinary frame, but it is. And that's only the beginning: Its design also allows a full 13.2 inches of rear-wheel travel, but with a relatively low 36.5-inch seat height. Plus, it's 10 pounds lighter than the conventional frame it replaces. | ||
More oddities: The detachable lower frame rails and footpegs are divorced from the main frame and bolt on via the lower engine mounts; a skidplate smooths the transition from a dead-end front downtube to the separate lower cradle, creating a tunnel for the left-side header pipe to pass through. | More oddities: The detachable lower frame rails and footpegs are divorced from the main frame and bolt on via the lower engine mounts; a skidplate smooths the transition from a dead-end front downtube to the separate lower cradle, creating a tunnel for the left-side header pipe to pass through. | ||
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Though in the past Rotax motors have been finicky about starting, the spot-on jetting of the ATK sorts this out. Warm-up is quick-no coolant to heat here. | Though in the past Rotax motors have been finicky about starting, the spot-on jetting of the ATK sorts this out. Warm-up is quick-no coolant to heat here. | ||
Small-handed riders will find the reach to the clutch lever excessive, but everyone will appreciate the light pull and smooth engagement. The transmission gives a solid feel and shifts respectably, though the throw may be a bit long for those used to Japanese machinery. Spread of the wide-ratio five-speed will suit everything from tight single-track rock climbing to cruising comfortably at 65 mph on the interstate. | Small-handed riders will find the reach to the clutch lever excessive, but everyone will appreciate the light pull and smooth engagement. The transmission gives a solid feel and shifts respectably, though the throw may be a bit long for those used to Japanese machinery. Spread of the wide-ratio five-speed will suit everything from tight single-track rock climbing to cruising comfortably at 65 mph on the interstate. | ||
[[File:ATK 605.jpg|600px|center|thumb|ATK 605]] | |||
A wide powerband is one of the ATK's joys. Torque is abundant, throttle response instant. It runs like a well-tuned Honda XR600, but with a much smoother bottom-end power spread. The slow-revving nature of the motor is deceiving, but ground speed tells the real story—the 605 simply ingests off-road miles. There's really no need to rev the motor, but the fact that you can shows its versatility. | A wide powerband is one of the ATK's joys. Torque is abundant, throttle response instant. It runs like a well-tuned Honda XR600, but with a much smoother bottom-end power spread. The slow-revving nature of the motor is deceiving, but ground speed tells the real story—the 605 simply ingests off-road miles. There's really no need to rev the motor, but the fact that you can shows its versatility. | ||
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So, back to this half-a-frame concept. Riding the bike, you would never know that there is some weird, new-fangled frame beneath you. Made up of large diameter, thin-walled tubing, it resembles half a perimeter-style frame, but seems amazingly rigid. The wrapped-steel swingarm, just like the one on the two-stroke LQ model, is much stronger than the ol"d rectangular unit, and does its share to reduce flex, too. | So, back to this half-a-frame concept. Riding the bike, you would never know that there is some weird, new-fangled frame beneath you. Made up of large diameter, thin-walled tubing, it resembles half a perimeter-style frame, but seems amazingly rigid. The wrapped-steel swingarm, just like the one on the two-stroke LQ model, is much stronger than the ol"d rectangular unit, and does its share to reduce flex, too. | ||
[[File:1994 ATK 605.jpg|600px|1994 ATK 605]] | |||
The frame also carries the bulk of the engine's 3 quarts of oil. This feels great on a cold day, but the heat can get to a sit-down rider's left thigh in warmer conditions. ATK has, however, taken precautions: The fuel tank has threaded inserts to allow the mounting of a heat shield. | The frame also carries the bulk of the engine's 3 quarts of oil. This feels great on a cold day, but the heat can get to a sit-down rider's left thigh in warmer conditions. ATK has, however, taken precautions: The fuel tank has threaded inserts to allow the mounting of a heat shield. | ||
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| Dry-Weight ||129 kg | | Dry-Weight ||129 kg | ||
|- | |- | ||
| Fuel Capacity ||16.5 | | Fuel Capacity ||16.5 Liters | ||
|} | |} | ||
==1992 ATK 605== | ==1992 ATK 605== | ||
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== Videos == | |||
{{#ev:youtube|https://www.youtube.com/watch?v=SiPUC5jW-W0|600|center}} | |||
[[Category:Enduro motorcycles]] | [[Category:Enduro motorcycles]] | ||
[[Category:ATK motorcycles]] | [[Category:ATK motorcycles]] | ||
[[Category:1990s motorcycles]] | [[Category:1990s motorcycles]] | ||