Go Back > General > Motorcycling News


Thread Tools
Old November 7th, 2017, 11:11 AM   #1
Ninjette Newsbot
All the news that's fit to excerpt
Ninjette Newsbot's Avatar
Name: newsie
Location: who knows?
Join Date: Jun 2008

Motorcycle(s): only digital replicas

Posts: 376
[RideApart] - Royal Enfield Unveils New 650 Twin Engine

Royal Enfield Unveils New 650 Twin Engine

Royal Enfield, the self-appointed “global leader in the mid-size motorcycle (250-750cc) segment," has unveiled its first modern twin-cylinder engine at its new Technology Center in Leicestershire, England. The air-cooled 650cc parallel twin will power the newest generation of Royal Enfield motorcycles.

READ MORE: Check Out All of RideApart's EICMA 2017 Coverage

Fans of the original British marque have long lusted for a contemporary version of the Royal Enfield Interceptor of the early 1970s. While the India-based company has been producing traditional 350/500cc singles ever since it became an India-based company (RE, of course, was founded in the United Kingdom), the new twin has been “designed to offer the right balance between power, torque and usability to ensure a smooth and approachable riding experience. It will offer broad spread of torque which will make the motorcycle easy to ride without frequently shifting gears.”

Not, in other words, a sportbike. The single overhead cam, air-cooled, 648cc parallel twin was co-developed by Royal Enfield’s UK Technology Center and the factory team in India. The new engine is rated at 47 horsepower and 52 Nm torque.

READ MORE: Royal Enfield's Rumored 750 Interceptor is on the Way | RideApart

According to Royal Enfield: “The engine maintains an under-stressed 9.5:1 compression ratio and the fuel injection system ensures that smooth, accessible power is available at all times. The focus of the development was on giving adequate torque, spread broadly throughout the rev range so that riders can tap into it instantly at anytime without the need for excessive shifting. As a result the engine feels fun, potent, and easy-to-use.”

The one-piece forged crankshaft is a first for Royal Enfield, designed for strength and the ability to handle the twin’s torque. The 270-degree firing order and use of a balancer shaft minimize the vibration factor. The designers spent considerable effort tuning the engine and designing an exhaust system to produce the proper tonal rumble of a vintage parallel twin.

READ MORE: Royal Enfield Sets Up Shop In Harley-Davidson's Hometown | RideApart


4-stroke, 270 degree crank, single overhead cam, air-oil cooled 648cc parallel twin
Power: 47 bhp at 7100rpm
Torque: 52 Nm at 4000rpm
Bore x Stroke: 78mm x 67.8mm
Compression Ratio: 9.5:1
Gearbox: 6-speed
Fuel Management: Fuel injection
Ignition: Digital spark TCI

More from RideApart:
     Related Stories

Click here for full story...
I'm a bot. I don't need no stinkin' signature...
Ninjette Newsbot is offline   Reply With Quote


Similar Threads
Thread Thread Starter Forum Replies Last Post
[] - Royal Enfield 650cc Twin Engine Unveiled (with video) (Bike R Ninjette Newsbot Motorcycling News 0 November 6th, 2017 01:10 PM
[] - Listen To The New Royal Enfield 750 Twin Ninjette Newsbot Motorcycling News 0 November 2nd, 2017 09:40 AM
[RideApart] - Royal Enfield Unveils 'My Kinda Bike' Customization Program Ninjette Newsbot Motorcycling News 0 June 21st, 2017 09:50 AM
[] - Is this Royal Enfield's new 750cc twin? Ninjette Newsbot Motorcycling News 0 March 22nd, 2017 04:10 AM
[] - Royal Enfield to offer twin-cylinder engine model soon Ninjette Newsbot Motorcycling News 0 April 5th, 2012 11:00 AM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Motorcycle Safety Foundation

All times are GMT -7. The time now is 12:54 PM.

remote server monitor
Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Except where otherwise noted, all site contents are © Copyright 2016, All rights reserved.