YAMAHA YZF-R15 150CC TO HAVE DIE-CAST ALUMINIUM SILICON(DIASIL) CYLINDER
Parallel to a slew of launches, Yamaha Motor India is aiming to demonstrate its technological prowess with the launch of DiASil Cylinder in the Indian market. Yamaha “DiASil Cylinder” is used on the new 150cc YZF-R15 which was unveiled at Auto Expo 2008 and will be released in the market later this year.
Developed in 2002 by Yamaha Motor Co., Ltd, Yamaha “DiASil Cylinder” is an all-aluminum die-cast cylinder with 60% better cooling performance and 30% cheaper production cost than a conventional cylinder (*1). Yamaha “DiASil Cylinder” (*2), is the world’s first all-aluminum die-cast cylinder and it achieves cooling performance equivalent to that of a nickel-plated cylinder, which is currently recognized as the best in the industry, but at a significantly lower production cost than a nickel-plated cylinder.
DiASil”, an abbreviation for “Die-casting Aluminum-Silicon”, is a technology which brings together an ideal combination of material, manufacturing technology and environmental friendliness. The material used is a 20% silicon content aluminum alloy, the manufacturing technology is the Yamaha CF Aluminum Die-cast Technology (*3), which enables the production of an all-aluminum die-cast cylinder. It is Yamaha’s exclusive CF Aluminum Die-cast Technology that enables the mass production of a die-cast cylinder made completely of 20% silicon content aluminum alloy, something that could not be done with conventional die casting methods.
According to Mr. Sanjay Tripathi, Head of Dept- Product Planning & Strategy, “Conventional engine cylinders have a steel liner to reduce the friction resulting from the piston’s movement. The “DiASil” cylinder is made by the exclusive Yamaha Aluminum Controlled Forging (CF) technology. Because the “DiASil” Cylinder is all aluminum, it has excellent heat dissipation qualities and reduces engine weight at the same time. In comparison to cast steel liner type aluminum cylinders, the DiASil cylinder has 60% better cooling performance at 30% lower manufacturing cost and enables 30% lighter design which results in better power to weight ratio besides excellent recyclability”.
“Considering the environment-friendly nature of aluminum, we have made aluminum technologies part of our core technology and actively increasing the use of aluminum in our products. Our CF Aluminum Die-cast Technology enables the mass production of die-cast aluminum parts that are both thinner and larger than was possible in the past. This same technology has been applied to the manufacture of engine parts. This is also a technology that can be easily transferred to overseas Yamaha manufacturing bases. Yamaha also plans to apply to new areas automobile and outboard motor engine parts”, he added.
This next-generation technology promises to contribute to improved function and product quality for the majority of Asian market motorcycles and automobiles that presently use conventional pistons with cast steel liners.
Source: Yamaha-Motor-India


22 People have left comments on this post
cost is so high for 150 cc
its amaging &great yamaha bike
Required more information
surprice with this yamaha r15
mast bike hai
need more info
want to know the cost of the bike???????
if any one knows that pls mail to varma29.maverick@gmail.com
Its a great bike dude and to know more in fact all the information go : yzfr15.blogspot.com
AMAZING BIKE GOOD WORK MAN .WHAT IS THE SHOWROOM PRICE MAN .WE R DIEYING TO TAKE IT MAN

Dear Fellows Indian Designed R15 is a great one but there are drawbacks its an electric start bike and no option for a kick start by chance your battery runs out or a short circuit your bike fails to start and your are in the middle of the road..
hi i have not seen this type of bike yet india as a local. inshallah i will buy this bike soon.
Dear Brothers of Bike Yamaha yzf R 15 is the best bike on Indian roads
as of now.And for the coming years Yamaha is and would be the leading
biker.About R 15 ‘6 gears’as of now no other bike has it.Its the atmost
bike of its class you would really feel the real racing spirit at the
top gears above 5000 rpm the best smooth bike ever in Indian market
available with a huge pick up, just withdraw the throttle and you could
feel the real speed master in you.it has 4 valves and a single spark
plug at its centre which rules out twin sparks.Its a dito of R1
Yamaha.Liquid cooled engine.17 Bhp which could be tuned by service
people to 20-22 bhp in ECU for those who dont care of mileage.The tyres
are the best for compared to any other bike in market.tube less
designed for R15 with special grip a sort of cutting and gumming to
roads at speeds of above 80.have you ever heard of anybike cornering at
100 without shifting gears down.it gives the atmost cornering you
should try it for they are the best for cornering and mileage.seen the
ad of yamaha r 15 its the same you could tried with those tires.no
woggling at high speeds unlike other power bikes in
market.aerodynamically designed.easy to drive even at city
conditions.drawn 4 stroke before you feel like and kick for a one more
gear many a times don’t you.here its 6 lavish .engine is Satisfying
than any other in Indian Market for the Indian Roads.more pick up 60-
100 in sec in your hands.The best bike build with a variety of
Accessories including handle clutch silencer, nuts and bolts with
yamaha design and stickers even a single seat option couling which you
can take off when required.sport bike stand and suites.R 15 bikers you
really deserve the Best.no need of alternating and customisation with
extra money for those who need, company itself has made them, the very
best.to be driven and performed.R15 riders enjoy the ride you are the
BEST!
do we get the one on red next to the bike too???
hiiiiiiiiii i am anil realy this is excellant bike i am impresed
i heard ur new r15 is not doing good on indians roads and there are certain problems and default in dis bike. wud it b safe for a miidleclass one’s to buy dis bike of 105000. as less money wud b spend on maintenance on pulsar, karizma THAN this one r15.
Hi, Fellas Thts the debut sports bike in India from yamaha.But I Would like to talk abt a few draw backs of this bike especially the rear tail lamps and the rear side cowls which seems 2 b very old fashioned doesn’t goes with the latest trendy looks with other bikes same is with the rear bumper its extraordinarily lengthy and 2 simple looks like an old fashioned bike doesn’t goes with its front looks and aesthetics, the resr tyre size would have been better with 180-80-17 same is with the front and the other story of this bike 150cc with 17ps making 16.76bhp is too less for a oil cooled engine and in terms of fetchin out money it goin 2 cost u Rs.1,05,000/-on road where as Bajaj dtsi with a 220cc engine with 20ps-19.76bhp with a oil cooled engine is Rs.90,000/-on road. Present scenario of yamaha india’s top company officials exodus from the company is also makin position grim abt this company.Unless yamaha manges the price line and alters certain changes in its aesthetics and power performance, this bike is not goin 2 survive in this mkt of power crunchy bike lovers.
R 15 actually is very good looking bike but the cost of the bike is much more compare to other 150 cc bikes
from the technicaly point of view yamaha did their best, but from customer point of view engine capacity is given less compare to prise as other compititers are giving higher speed @ lower coast, those who love speed they definately dont care of milage so that is not an issue, but look vise if you see its a JUMBO for city riders(see the avrg road condition).
Finally I would like to mark it 7.5 out of 10.
GOOD

Yamaha is charging too much for less CC’s. I suggest one should buy a 2nd hand Karizma or Bajaj 220 and have it modify. This way one will only benefit as one can have it look as he/she wants i.e. colour combination, broader Wheels and finally a sexy look with SPEED.
I did this and believe me this has cost me just RS. 80,000/- moreover everybody thinks that my bike is R1 (1200cc). Whatelse you want?