Brammo Owners Forum
Brammo Engage & Encite Discussion => Brammo Engage => Topic started by: protomech on January 09, 2012, 11:51:35 PM
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IET technology Dyno test Brammo Engage 100 kmh (http://www.youtube.com/watch?v=9g2TsoLTg3o#ws)
Not sure how much of that is the dyno and how much the bike.. but it's not quiet!
No power numbers .. pity.
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Nice find...smooth shifting for sure...
Gavin
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And here's a comparison between a gas bike and an IET-equipped bike (no idea if Brammo).. skip to 0:50 for the flyby.
http://www.youtube.com/watch?v=8_KT4eeXxqU#t=52s (http://www.youtube.com/watch?v=8_KT4eeXxqU#t=52s)
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How does he know when to change gears? He's probably keeping an eye on the tachometer, or perhaps he can feel the motor vibrations. I certainly don't think he's listening for the sound of the motor. I guess the lack of an audio cue might take a bit of getting used to.
Thanks for posting the video, protomech.
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Looks like they took down the dynamometer video.
UPDATE: Actually, they put up a different version...
(I took the liberty of updating protomech's post.)
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Smooth as butter! The engage appears to looks more refined than what we have seen in the past... looks production ready.
...wait 169kmh = 105mph right? Holy shit! May be different when actually pushing the bikes weight though right?
Also, nice shoes, but the way things look you definitely would want to make sure they are tied and not have your shoe laces flapping in the wind, or im sure you would lose them. Hopefully the production version has some kind of chain guard there.
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I do like not only how smooth the shifting is, but just how "still" the bike is...no vibration, just power and speed.
And if the Engage can go 169 kmh, I would like the Enertia to hit 130 kmh please :)
Gavin
gah, if the Engage hits 169 kmh, what do you think the Empulse could do on the Dyno?
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gah, if the Engage hits 169 kmh, what do you think the Empulse could do on the Dyno?
My thoughts, exactly. I bet the top speed of the Empulse is going to get an update by production-time.
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looks like the video has been pulled.
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For some reason, they keep pulling and reloading the video. I think I may have a solution....
Here's a "permanent" link to the video...on the Brammofan Youtube page:
IET Power train Dyno test Brammo Engage 170 kmh (http://www.youtube.com/watch?v=2T4PEQQIXvs#ws)
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1.5 < Km/h <170
??
Gavin
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Well, it's not such a bad idea to improve the videos. The first one showed the bike going to (only) 100 km/h, and the aspect ratio was all messed up. The second went up to 170 km/h, but was at a very low resolution. The "final" video goes to 170 and looks (and sounds) great!
I wonder if 1.5 < km/h < 170 shows the limit of the dyno, or perhaps the limit that they are testing at.
I can't wait to see the Empulse on a dyno! ;D
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Keep in mind just because the Engage can spin the dyno wheel at 170 km/h doesn't mean the bike has enough power to overcome drag at that speed.
Still, nice to see that it's not really limited by gearing in the top end.
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New video up:
HDV 0999DA CARICARE (http://www.youtube.com/watch?v=KKHX2U6dZbA&feature=uploademail#ws)
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(cavalli == horse) 49HP?... Wow.
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Woohoo! Look at it go! ;D
That was a very curious test. Would anybody care to comment on what it means?
Some points of observation:
- No shifting gears this time, but the bike was still going at 108 km/h (67 mph)!
- That line was very straight. Was a computer controlling the throttle, was it WOT, or someone with a steady hand?
- It looked like the graph had already been drawn before the wheel stopped turning - I wonder what the graph is showing.
- The aspect ratio is messed up. The last time they did that, IET re-posted the video with the correct aspect ratio, so I wouldn't be surprised if they did that again.
I don't have any experience with a dyno, so I have no idea what it can do or show (besides top speed).
I dimly recall seeing a graph like this some time ago that compared a Brammo Enertia, a Native S and a Zero S.
(Hey, I found it again!)
(http://www.motorcycle.com/gallery/gallery.php/d/250363-2/2010-e-bike-shootout-hp-dyno-1.jpg?g2_GALLERYSID=TMP_SESSION_ID_DI_NOISSES_PMT)
Wow. At the time, the Zero had the highest HP, at 20.8 hp. 2 years later, the Engage has more than doubled that!
For a fun look at the state of the art two years ago, check out the full article:
http://www.motorcycle.com/manufacturer/2010-ebike-shootout-89839.html (http://www.motorcycle.com/manufacturer/2010-ebike-shootout-89839.html)
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Woohoo! Look at it go! ;D
That was a very curious test. Would anybody care to comment on what it means?
I think it means we need some more specs from Brammo on the Engage... batttery capacity and some standardized testing range results (UDDS?), if that 49CV is done at a 1:1 ratio (or corrected) etc :)
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Usually when a car is run on a dyno it will be a run through a single gear (4th or 5th, typically the gear closest to 1:1 is used).
The graph plots power vs RPM (either dyno roller RPM or calculated motor RPM); by the time the camera started to pan up, the motor and dyno roller was spinning down from its peak RPM and therefore all the data displayed had been captured. The graph could easily be doctored, of course, but assuming it's not..
Power is basically proportional to torque times RPM. A linear power curve as seen here (and also for most of the Zero dyno above) means that the torque is flat, eg you get the same amount of force at the wheel no matter how fast the motor is spinning.
It's reasonable to assume (but retain suspicion) that the dyno has been calibrated properly - but just because the motor is mounted on an Engage doesn't mean that what we're seeing is (or is not) the shipping-intent Engage motor. SMRE could be using the Engage as a testbed for new motors.
For example, the Empulse motor. We've long been told that the Empulse motor is 40 kW (peak). The recent LATimes article at the Long Beach motor show indicated that we might see a bit more power. 40 kW peak motor power is about 54 hp; 49 hp at the wheel is pretty good.
Compare to the Enertia, which is rated at 13 kw = 17.4 hp. If the dyno is accurate, then roughly 77% of the rated motor power is available at the wheel. Using the same ratio for SMRE's test gives a motor power around 64 hp, or 47 kW.
Does the Engage have a 47 kW motor, or is this something else? I'd like to know : )
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I was hoping the plus might get a HP bump
I thought 25 HP was a nice number :)
But 50 HP is quite a bit for that sized bike
Gavin
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According to the Zero S/DS owners manual the 2012 Zero produces 12 hp continuous and one of the company's developers claims it makes 28 hp peak (presumably before it gets too hot). So it sounds like the Engage is pretty peppy and you don't want to race it if you are riding a Zero.
Which brings up an interesting question. How do you match up electric motorcycles in a race so that you have a race worth watching? Claimed HP, weight, kWh, run what you brung, something else, no doubt?
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No rider, no hand on throttle
Must be computer controlled
Or
Ghost Rider
Gavin
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Some points of observation:
- The aspect ratio is messed up. The last time they did that, IET re-posted the video with the correct aspect ratio, so I wouldn't be surprised if they did that again.
Well how about that. As predicted; the video has disappeared! I hope that they only took it down so that they can put up a better version. If not, then: what a tease! At least we got to see it for a few hours. :P