PDA

View Full Version : EFi...on a 2 stroke?!


O'Brien#12
03-11-2010, 04:05 AM
Little internet speculation...it appears Little italian MX maker TM are going to release a bike that will revolutionise MX...again

TM Racing to release 125cc fuel injected two stroke! :: Two Stroke Motocross (http://twostrokemotocross.com/2009/10/tm-racing-to-release-125cc-fuel-injected-two-stroke/)

valvesR4pussies
03-11-2010, 06:34 AM
I wonder if this will help

From what I've heard of new EFI 4 strokes is the power feels tamer, more metered and goes flat on top than when they were carbed. I guess the new Hondas lost 3 horses over the 08 model after they went FI.

It should be interesting to see how the new TM does.

I think KTM will stick to what works.

O'Brien#12
03-11-2010, 06:57 AM
apparently it works better with a two stroke as the jetting is such a vital aspect. Look at the ski-doo and snowmobile market then direct injection 2 strokes are pretty powerful. I am just glad they are looking at ways that will breathe life into the 2 stroke market as i love the way they feel to ride.

ryan_625
03-11-2010, 11:50 AM
look at the snowmobile market, direct injection is the future of 2strokes. I ride an efi 800 and there is no hesitation and always runs perfect and is still tunable, but with a laptop.
skidoo is releasing direct injection soon, its supposed to blow every motor before it out of the water

swedishfishmx
03-11-2010, 12:22 PM
Awesome, TM is always a company that stands out to me. They make good bikes just don't have a big market here in the states. Can't wait till KTM does direct injection. 2011 should be a great year for KTM.

Falcon991
03-11-2010, 07:21 PM
Awesome, TM is always a company that stands out to me. They make good bikes just don't have a big market here in the states. Can't wait till KTM does direct injection. 2011 should be a great year for KTM.

I hope KTM sells ridiculous numbers of those bikes, and then maybe Yamaha will build one in 2015 or so....

Case
03-11-2010, 10:16 PM
I hope KTM sells ridiculous numbers of those bikes
X2 on that part!:lol:

Erick
03-12-2010, 01:09 AM
Old news (http://ronronmx.com/vbulletin/showthread.php?t=3287&highlight=injection) :-P

I believe it didn't happen this year... :cry:

TM RACING MX125 2010 (http://tmracingmotorcycles.com/models/tm-racing-2010/mx-125-2010/)

http://tmracingmotorcycles.com/wp-content/uploads/2009/09/125-MX-dx.jpg


http://tmracingmotorcycles.com/wp-content/uploads/2009/09/125-MX-sx.jpg



ENGINE
Engine TM Racing, Single cylinder, 2-stroke
Bore x Stroke 54 x 54.5
Displacement 123.5cc
Intake Valve V-Force Reed valve
Carburetor Keihin PWK 38
Fuel Unleaded fuel / 3,5% oil
Ignition Kokusan CDI Electronic with variable advance
Clutch Multiple-disk in oil bath (hydraulic control)
Transmission 5 gears
Cooling Liquid Cooled
Starter Kick

CHASSIS
Frame Aluminum Perimeter Frame
Front Fork Marzocchi USD 50mm
Rear Shock Sachs Boge (optional Ohlins )
Front Tire 90/90 x 21″
Rear Tire 100/90 x 19″
Front Brake Disk 270 mm. Nissin pump/ Brembo caliper
Rear Brake Disk 245 mm. Nissin pump & caliper
Fuel Capacity Plastic 8,7 litres

O'Brien#12
03-12-2010, 02:47 AM
aww that's poo....although they may introduce it just for the UEM 125 champs and use that as a test bed for it. Who knows....i do know that TM make a sexy bike! :)

Erick
03-12-2010, 05:29 AM
aww that's poo....although they may introduce it just for the UEM 125 champs and use that as a test bed for it. Who knows....i do know that TM make a sexy bike! :)

Lets hope so, there is no doubt there is a market for EFI two-stroke bikes. As long as they are just as powerful.

DBerg649
03-12-2010, 07:57 AM
If I remember hearing correctly, the EFI 450s have improved power over the carbed bikes down low, which makes them good for SX but when you start to open it up is lacks up top, making for an overall more mellow power curve.

IGASAURUS
03-12-2010, 10:03 AM
I hope KTM sells ridiculous numbers of those bikes, and then maybe Yamaha will build one in 2015 or so....

Hell I just hope two strokes will still be sold in 2015 :confused: And why'd you say 2015? You got some insight about what they're doing the next few years?

Motoxracer24
03-12-2010, 09:20 PM
Hell I just hope two strokes will still be sold in 2015 :confused: And why'd you say 2015? You got some insight about what they're doing the next few years?

Sorry but the zombie apocalypse is happening in 2012, better to invest in canned food, weapons and a bomb shelter before saving up for a 2015 yamie. Dont shoot the messenger :thumbsup:

MXDave
03-12-2010, 09:48 PM
TMs look kinda cool but what about the forks? Marazachi (sp!)? Do they work?

Erick
03-13-2010, 06:24 AM
TMs look kinda cool but what about the forks? Marazachi (sp!)? Do they work?

It's Marzocchi actually, but what makes you doubt that they work?

MXDave
03-14-2010, 10:46 AM
I knew the spelling was off, hence the (sp) inserted. My comment is based on their level of experience with modern MX. For years KTM WP forks and shocks were terrible, finally getting better so I've heard. Don't get me wrong, I think it would be great to have a new TM as a serious player with their two-strokes.

Falcon991
03-16-2010, 09:21 AM
Hell I just hope two strokes will still be sold in 2015 :confused: And why'd you say 2015? You got some insight about what they're doing the next few years?

Just that I think an EFI YZ 2-stroke would also come with a major bodywork redesign (the 2010s look like the 2002s.) Any such redesign would probably require a few years of R&D and Yamaha wouldn't even get started until KTM proved it could sell that type of unit.


Also, Marzocchi forks are things of beauty. They look like A-kit stuff from Showa or KYB. If the valving is even close, then they must be awesome!