A gem the yanks missed out on
Here is a little taste of what you guys in the U.S. missed out on back in the mid to late 90's.
Remember the 180* crank TDM850 twin from the early 90's you had a taste of for 2 years???
Well here is what the rest of us had as a 2nd generation.
TRX850 utilising a 270* crank and 57Ft/lb -76HP to the rear wheel std weighing in at 209KG with a full tank of fuel.
41mm FCR's and pipes got me to 87HP.
I've made a few changes and have achieved 105HP and 71 Ft/lb to the rear wheel with a healthy 70HP from 5,000rpm to 105 at 8500.
Changes made include Dymag SB5 mags, Ohlins rear and R1 front end with stepped billet trees to give me the same offset and height.( Forks with full racetec internals)
I got the weight down to 187KG and it pulls like a train, handles like dream and stops on a dime.
Motor wise, well the engine number is still the same.
I've built the motor to enhance the torque and midrange that the std motor already has to offer and here are the basics.
Titanium and ceramic coated Akrapovic conical header 2 into 1 system fed by a pair of FCR41's.
1mm oversize valves, ported and flowed with light weight forged Arias 878 12:1 pistons (all internals ceramic coated) and Kent cams / slotted and dialed.
Carillo rods and all balanced and blueprinted driving through a Sigma slipper clutch.
I had a YZF750 sp gearbox to fit into the motor but just couldn't find any YEC shafts to suit so still runs the std 5 speed box.
I'm running an Ignitech TCIP4 fully programable ignition and quickshifter and Dynatek DC-3 coils set up through a relay to shove the full 14.3V from the lithium battery.
I've utilised O2 sensors for tuning so I was quite content with the first dyno run even with the motor running a little lean.
A little tweeking I'll find a little more on the first run at 105HP/71Ft,lb.
These figures are comparable to an R6 weight and HP from the 2006 but with the torque from a Zx10 from the same yr.
Bike was one of the features from practical sports bike magazine Oct2014
Lots of other little extras too numerous its to mention.
I built the motor so each component complimented the next and focused towards plenty of midrange with 63ft/lb at 5,000rpm rising up to 71 at 7,000rpm and flat to 8,000 before starting a slow curve down with 63 Ft/lb at 9,000.
Continues to pull in top till the limiter I've set at 9500 / 150mph.
A true wolf in Sheeps clothing.