Bring the speed: The Best 2-strokes! Part2 They're not really gone!
Right now for the real speed & power that made 250 2-strokes so popular...before the Mad-ass 500's!!!
NONE of this, and none of the current Superbike Technologies would be so developed,
if it were not for one man... That man was: The Great Ernst Degner, who engineered & exported an advanced 2-stroke racing bike technology that changed the world...forever! This advanced technology was created by Walter Kaaden in East Germany.
The Japanese company Suzuki hired him (and his knowledge), and in 1962 Degner won Suzuki's first World Championship in the 50cc class.
Ernst Degner, (on
the left) defected from East Germany and joined the Suzuki team in late
1961. Degner was an excellent rider but also a brilliant engineer.
During the winter 1961—1962 Degner helped Suzuki to develop a new
generation of Suzuki two-stroke racing machines. (Source & Full Degner history at: http://www.2116680.contentys.com/ernst-degner.html)
Now witness the Pure Power of "The Holy Grail" otherwise known as the 500 Gamma,
this is where, light-weight & real horsepower & hardcore torque comes into its' own:
Could and will ANYTHING ever surpass this bike?!!: The RG500 Gamma
Now witness the Pure Power of "The Holy Grail" otherwise known as the 500 Gamma,
this is where, light-weight & real horsepower & hardcore torque comes into its' own:
Could and will ANYTHING ever surpass this bike?!!: The RG500 Gamma
1990 Honda NSR 250SP:
Make Model
|
Honda NSR 250SP (NC21) |
Year
|
1990 |
Engine
|
Liquid cooled, 90°V-twin cylinder, two stroke, reed valve |
Capacity
|
249 |
| Bore x Stroke | 54 x 54.5 mm |
| Compression Ratio | 7.3:1 |
Induction
|
TA20A |
Ignition /
Starting
|
CDI / kick |
Max Power
|
45 hp 32.8 kW @ 9500 rpm |
Max Torque
|
35 Nm @ 8500 rpm |
Transmission /
Drive
|
6 Speed / chain |
| Gear ratio | 1st: 2.846 / 2nd: 2.000 / 3rd: 1.631 / 4th: 1.368 / 5th: 1.250 / 6th: 1.173 |
| Frame | Aluminum twin tube type frame |
Front Suspension
|
Telescopic semi adjustable for preload only |
Rear Suspension
|
Single shock swingarm non-adjustable |
Front Brakes
|
2x discs 2 piston caliper |
Rear Brakes
|
Single disc 1 piston caliper |
Front Tyre
|
110/70-17 |
Rear Tyre
|
150/60-17 |
| Seat Height | 770 mm |
Dry-Weight / Wet-Weight
|
133 kg / 152 kg |
Fuel Capacity
|
16 Litres |
| Review | Type I / Type II |
| Manual | Technical |
And then the fun Honda NSR 250R-SP Repsol Replica:
Make Model
|
Honda NSR 250R-SP Repsol Rep |
Year
|
1996 |
Engine
|
Liquid cooled, 90°V-twin cylinder, two stroke, reed valve |
Capacity
|
249 |
| Bore x Stroke | 54 x 54.5 mm |
| Compression Ratio | 7.4:1 |
Induction
|
TB 10A |
Ignition /
Starting
|
CDI type |
Max Power
|
40hp @ 9000 rpm |
Max Torque
|
3.3 kgf-m @ 8000 rpm |
Transmission /
Drive
|
6 Speed / chain |
Front Suspension
|
Telescopic cartridge valve adjustable type preload and rebound |
Rear Suspension
|
Single shock adjustable damper Tension / compression Pro Link PRO-ARM single sided swingarm |
Front Brakes
|
2x 274mm discs 4 piston calipers |
Rear Brakes
|
Single 220mm disc |
Front Tyre
|
110/70-17 |
Rear Tyre
|
150/60-17 |
Dry-Weight
|
137 kg |
Fuel Capacity
|
16 Litres |
Now things are getting a bit more serious!!! These bikes can accelerate just like much bigger bikes!!! They powerful & lightweight...
Yamaha TZR 250SP (1990) was a breath of fresh air & fresh speed!
Make Model
|
Yamaha TZR 250SP |
Year
|
1990 |
Engine
|
Two stroke, parallel twin cylinders, read valve, |
Capacity
|
249 |
| Bore x Stroke | 56.4 x 50 mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 5.9:1 |
Induction
|
2x Mikuni TM28SS carbs |
Ignition
|
CDI |
| Starting | Kick |
Max Power
|
50 hp / 36.4 kW @ 10000 rpm |
Max Torque
|
35.5 Nm / 26.2 lb/ft @ 9750 rpm |
Transmission
|
6 speed |
| Final Drive | Chain |
Front Suspension
|
Telescopic fork adjustable preload 140mm wheel travel, |
Rear Suspension
|
Coil and gas spring preload 9-way preload position, 100mm wheel travel. |
Front Brakes
|
Single 320mm discs 2 piston calipers |
Rear Brakes
|
Single 210mm disc 1 piston caliper |
Front Tyre
|
100/80-17 |
Rear Tyre
|
120/80-17 |
| Dimensions | Length 2005 mm / 78.9 in Width 660 mm / 25.9 in |
| Wheelbase | 1375 mm / 54.1 in |
| Seat Height | 760 mm / 29.9in |
Dry Weight
|
128 kg / 282.1 lbs |
| Wet Weight | 140 kg / 308.6 lbs |
Fuel Capacity
|
16 liters / 4.2 gal |
Then came the last whiz of 250 2-stroke speed from Yamaha: The 1994 TZR250R (3XV)
Yamaha TZR 250R-SP
Make Model
|
Yamaha TZR 250R-SP (3XV) |
Year
|
1994 |
Engine
|
Two stroke, 90° V-Twin cylinder, read valve induction |
Capacity
|
249.7 |
| Bore x Stroke | 56 x 50.7 mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 7.5:1 |
Induction
|
2x Mikuni flatside carbs |
Ignition
|
Microcomputer controlled |
| Starting | Kick |
Max Power
|
45 hp / 33.6 kW @ 9500 rpm |
Max Torque
|
3.8 kgf-m / 40 Nm @ 8000 rpm |
Transmission
|
6 Speed |
| Final Drive | Chain |
Front Suspension
|
39mm Upside-down forks |
Rear Suspension
|
Monocross linkage |
Front Brakes
|
2X disc 4 piston calipers |
Rear Brakes
|
Single disc 2 piston caliper |
Front Tyre
|
110/70 Z17 |
Rear Tyre
|
150/60 Z17 |
| Dimensions |
Length
1960 mm / 77.1in
Width
680 mm / 26.7 in
Height
1075 mm / 42.3 in
|
| Wheelbase | 1340 mm / 52.8 in |
| Seat Height | 780 mm / 30.7 in |
Dry-Weight
|
126 kg / 277.8 lbs |
Fuel Capacity
|
15 Litres / 4.0 gal |
Nice!!! But let's now take a bit if a speed jump & look at what Kawasaki unleashed with the KR-1:
Make Model
|
Kawasaki KR1 |
Year
|
1989 |
Engine
|
Liquid cooled, two stroke,
parallel twin cylinder,
|
Capacity
|
249 |
| Bore x Stroke | 56 x 50.6 mm |
| Compression Ratio | 7.4:1 |
Induction
|
2x 28mm Keihin PWK |
Ignition /
Starting
|
Capacitor discharge |
Max Power
|
55 hp @ 10500 rpm |
Max Torque
|
3.75 kgf-m @ 10500 rpm |
Transmission /
Drive
|
6 Speed / chain |
Front Suspension
|
41mm stanchions, air assisted telescopic fork with unstopped preload adjustment |
Rear Suspension
|
Bottom Link Uni-Trak with air adjustable gas shock, unstopped preload, and four-way rebound damping |
Front Brakes
|
2x discs 4 piston calipers |
Rear Brakes
|
Single disc 2 piston caliper |
Front Tyre
|
100/70 VR17 |
Rear Tyre
|
130/60 VR18 |
Dry-Weight
|
123 kg |
Fuel Capacity
|
16.0 Litres |
Then the ripping KR-1S!:
The speed of these KR-1s' was enough for it to keep up with pretty much anything for a good few gears
when it came out.. And of course it was the fastest 250 in its' class and was more like the speed of a 350 or
400cc bike! Crazy!!! Wouldn't it be awesome to have another 250 like this produced?!!
Make Model
|
Kawasaki KR1S |
Year
|
1990 |
Engine
|
Liquid cooled, two stroke,
parallel twin cylinder,
|
Capacity
|
249 |
| Bore x Stroke | 56.0 x 50.6 mm |
| Compression Ratio | 7.4:1 |
Induction
|
2x 28mm Keihin PWK |
Ignition
|
Capacitor discharge |
| Starting | kick |
Max Power
|
59.1 hp / 43.2 kW) @ 10500 rpm |
Max Torque
|
40.2 Nm / 4.1 kgf-m @ 10500 rpm |
Transmission
|
6 Speed |
| Final Drive | Chain |
| Frame | Tubular diamond |
Front Suspension
|
41mm stanchions, air assisted telescopic fork with unstepped preload adjustment |
Rear Suspension
|
Bottom Link Uni-Trak with air adjustable gas shock, unstepped preload, and four-way rebound damping |
Front Brakes
|
2x discs 4 piston calipers |
Rear Brakes
|
Single disc 2 piston caliper |
Front Tyre
|
100/70 VR17 |
Rear Tyre
|
130/60 VR18 |
| Rake | 24.0° |
| Trail | 90 mm / 3.5 in |
| Dimensions | Height 1,365 mm / 53.7 in Length 2,015 mm / 79.3 in Width 695 mm / 27.4 in |
| Wheelbase | 1365 mm / 53.7 in |
| Seat Height | 755 mm / 29.7 in |
Dry Weight
|
131 kg |
Fuel Capacity
|
16.0 Litres / 4.2 gal |
Consumption average
|
36 mpg |
Standing
¼ Mile
|
12.9 sec / 108 mph 173.8 km/h |
Top Speed
|
135.3 mph / 217.7 km/h |
Look at that speed!!! It's the same as a Race Track Powervalve!!!
Now, a good 30 Years after these crazy 2-strokes were everywhere, and so popular,
they are actually making a comeback on the road thanks to 2 companies: Ronax, and Suter.
Both of these companies have had these 2-Strole 500cc projects in the pipeline for a while.
The astonishing thing is: The Suter has 195bhp & it's only a 576cc bike!
The popular top-end 1000cc bikes we see today like the GSRX-R, Fireblade, R1, & ZX10
are all around 200bhp, that's only 5bhp more than the Suter MMX500!
Here it is with a great overview: Suter were also at the Isle of Man TT 2016 too with their new awesome 576cc offering: Both these 2-strokes are modelled around 1980s GP Race bikes like the RG500 Gamma & the RD500 etc, and the Suta is made for the track... However,the Ronax 500 is actually a street version that will be like having a GP racer 500 on the road!!! It will not be cheap, but it's the start of a 2-stroke revival:
Awesome Sitemap
http://gixxerlovers.blogspot.co.uk/2014/10/part-1-where-did-all-these-mad-bikes.html
http://gixxerlovers.blogspot.co.uk/2014/10/part-2-power-of-beast.html
http://gixxerlovers.blogspot.co.uk/2014/10/part-three-after-slabby.html
http://gixxerlovers.blogspot.co.uk/2014/11/part-4-ultimate-test-isle-of-man-tt-2011.html
http://gixxerlovers.blogspot.co.uk/2014/11/superbikesit-all-started-with-gsx-r-750.html
http://gixxerlovers.blogspot.co.uk/2014/11/bring-speed-best-1990s-2-strokes-part1.htmll
http://gixxerlovers.blogspot.co.uk/2014/11/where-will-future-take-us.html
http://gixxerlovers.blogspot.co.uk/2014/11/where-are-all-fast-2-strokes-look-what.html
http://gixxerlovers.blogspot.co.uk/2014/12/guy-martin-formidable-force.html
http://gixxerlovers.blogspot.co.uk/2015/08/racing-at-suzuka.html
Follow @GSXRLovers
Bring the speed: The Best 2-strokes! Part2 They're not really gone!
Reviewed by Gixxer1000
on
00:02
Rating:
Reviewed by Gixxer1000
on
00:02
Rating:
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