| Author | Message | ||
     7873jake |
http://www.youtube.com/motusmotorcycles#p/u/0/2koo YoibfeA http://motusmotorcycles.com/ Just curious if any of the collective here have been following this one. | ||
| Lloydxt |
Wow!  | ||
| Electraglider_1997 |
Almost scared me when they were revving that engine. | ||
| 7873jake |
Their customer relations guy just sent me a WAV file of the thing rev'ing past 6k rpm. Not sure if I can post it. It sorta makes you chuckle (can't say giggle) when you hear it. I tried to post it but it was too big. | ||
| Hughlysses |
Yea, I signed up for updates several months ago. There's been at least one thread on the Quickboard about it. I really like the engine concept and hope they're successful with it. Maybe they can hire Erik to help them with the chassis.  | ||
| Mnrider |
Direct injection is coming to the mainstream. Better gas mileage and more power. Good luck to them. | ||
| Johnboy777 |
Outstanding - good on them. Now 'if' they can just deliver a product. The distance from the conference room to the showroom, is about a million miles. . | ||
| Hughlysses |
Direct injection is coming to the mainstream. Better gas mileage and more power. What Ford is doing with direct injection and turbos is pretty freaking amazing. Diesel-like torque AND gas engine high RPM power. Check out this article: http://www.autoblog.com/2010/09/26/mike-rowe-narra ting-ford-f-150-ecoboost-web-documentary/ 365 hp and 420 lb-ft on regular unleaded out of a 3.5L V-6. And this isn't some limited use, "put your foot in it occasionally" engine, it's a damn TRUCK engine. Hmmm, I wonder how hard it would be to add direct injection to our Ulys? | ||
| Buewulf |
Ambitious. Looks like it will be quite expensive. I wonder if they can be value-competive with proven products like the VFR and K13. Would probably feel pretty spooky at first without a throttle plate! Now people will hate motorcyclists for loud pipes AND obnoxious exhaust brakes. | ||
| Electraglider_1997 |
Buewulf, You still need to get air into the combustion chamber so the throttle plate stays. Looks like the torque increase is from higher compression pistons. So to update a ULY motor to direct injection would take a minimum of changing to higher compression pistons, new ECM, and machining for direct injection. 60 mpg, 120 hp 120 ft-lbs torque. And a change of shorts. Nice update. | ||
| Buellhusker |
If you do a direct injection you do not use a air control throttle plate you just change the amount of fuel you inject like a diesel. | ||
| Conchop |
Motus and Moto Cycz are cool. Their engineering is USA at its best, just as Buell's. It gives me pause and hope to see the USA making these efforts. The trick is to get them to market. The competition against China is only going to become more tense. Neat bikes are popping up all over the world. Chances are, a lot of these bikes and- or their components will be manufactured offshore, just like the Buells were. It would be uber cool if they could be manufactured here. | ||
| Bluzm2 |
Jake I would LOVE to get a copy of that wav file. How big is it? Could you email it? Brad | ||
| Ft_bstrd |
I would break my wiener off in that! That sounds amazing. I have been following this for a while. Can't wait to see what this looks like. That thing is going to be outrageous! Now it just needs a top fuel screw type super charger. | ||
| Ft_bstrd |
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| Ft_bstrd |
Me too. I want wav. file. | ||
| Towpro |
I want to hear it running 12K. That little v4 should be able to crank out some RPM. | ||
| Electraglider_1997 |
Buellhusker, How is air controlled? As the rpms increase then so would the pull for air. How is the air/fuel mixture kept optimal? | ||
| 7873jake |
PMs sent to Bluzm2 and Ft_bstrd to get an address for the WAV. | ||
| Johnboy777 |
I've always thought a small V8 would be great in a motorcycle. Hayabusa V8 engine  LINK: http://thekneeslider.com/archives/2005/02/09/hayab usa-v8-engine/ | ||
| Tootal |
There needs to be something to control air flow. If it doesn't have a throttle body then they might use the intake valves like BMW automotive engines. (not all) BMW vary's the opening of the intake valves to control rpm. Very cool. | ||
| Ft_bstrd |
Why wouldn't a variable flow injector controlled by the ECM to match airflow not work just as well without the valves? | ||
| Satori |
Ft Bstrd, Because Gasoline burns at a very narrow range mixture of fuel to air. It needs to be close to 14% plus or minus a couple hundreths. Diesel burns or rather more explodes at almost any mixture, which is why a diesel engine as far as air is concerned is always WOT. in a diesel, you control speed/power with how much is injected. Gasoline, one way or another both need to be regulated to work. So one way or another air needs to be regulated, and a throttle plate would most likely be the simplest, and lightest solution. | ||
| Towpro |
Look at the video, you can see 4 throttle bodies in the picture, but you can't see in them far enough to see the butterfly's. You can see the plugs from where the hole for the throttle shafts was bored. (Message edited by towpro on October 01, 2010) | ||
| Natexlh1000 |
I saw the Motus "renderings" in magazines and didn't take it seriously at all. Great to hear something like that actually run and sound awesome doing it too! | ||
| Ft_bstrd |
They are planning to release the first models in 2011 and are taking deposits. They must be close. | ||
| Union_man |
Anyone heard what the price will be? | ||
| Ft_bstrd |
They are targeting the BMW K1300GT in pricing. 2010 model price for the GT is $19,150. Anything more than that as a price, and it's going to be difficult to get it off the ground. | ||
| Hughlysses |
Because Gasoline burns at a very narrow range mixture of fuel to air. It needs to be close to 14% plus or minus a couple hundreths. Diesel burns or rather more explodes at almost any mixture, which is why a diesel engine as far as air is concerned is always WOT. in a diesel, you control speed/power with how much is injected. I don't think it's the fuel used as much as the method of ignition. Spark ignition of gasoline requires a ~14.7 to 1 mixture. Compression ignition (as used in a diesel) allows ignition to occur with the very lean mixtures. One of the advantages of direct injected gasoline engines is that they can be operated at VERY lean fuel-to-air ratios. This is achieved by spraying the fuel so that a rich mixture is produced around the spark plug (so that ignition occurs when it's supposed to). The mixture in the remainder of the cylinder can be very lean as it is ignited by the flamefront from the rich mixture. This helps give diesel-like part load efficiency. | ||
| Electraglider_1997 |
http://en.wikipedia.org/wiki/Gasoline_direct_injec tion | ||
| Towpro |
I think 14-1 is needed because of the throttle plates! Interesting read Electroglider. I have always said they can build a 2 stroke that does not need to use the bottom of the piston as a pump, this allowing you to oil the bottom end with engine oil. I can see direct injected 2 strokes being developed by somebody like KTM that has the most to win by making it work. | ||
| 46champ |
They have built 2 strokes that didn't use the bottom end for the pump, but they need an external supercharger to work. | ||
| Buewulf |
Yamaha makes GDi 2-strokes for outboards. Seems like they would be first to the punch if they felt such a system would be competitive. |
