Recent Posts

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Brammo Empulse / Re: Added a track fairing
« Last post by 00049 (AKA SopFu) on Today at 07:26:53 PM »
Very nice!
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Brammo Empulse / Re: Empulse and OVMS module
« Last post by frodus on Today at 07:14:18 PM »
I'm working with the mycarma guys to sniff the Canbus. I've mentioned it to Brammo but haven't heard much.

I think we should get some guys on this forum some CAN dongle and start to peck away at some of the traffic. The display CAN has a lot going on and it shouldn't be too hard to find rpm, voltage, current, etc.

I've got my own CAN equipment and mycarma logger if people want to contribute. We also have that USB drive and some partially decoded messages that may line up.
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Brammo Empulse / Added a track fairing
« Last post by barboo on Today at 06:18:12 PM »
Added a track fairing for Barber in October. Thankfully Arthur changed his up so mine isn't a mirror image. :)

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Brammo Empulse / Re: Re: Slow Speed Maneuvering
« Last post by kingcharles on Today at 11:27:45 AM »
Gear lag?  I've noticed what might be the same thing, but I'm not sure from your description.

When I pull the clutch, the motor does not always feel like it immediately disconnects the motor from the wheel, so I don't immediately begin coasting.  There is sometimes a delay of 1-3 seconds before the bike feels like it is coasting.  Do you experience this symptom?
I only get that when the gearbox is cold. After a bit if riding the clutch works fine.
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Brammo Empulse / Re: Slow Speed Maneuvering
« Last post by BrammoBrian on Today at 11:19:08 AM »
Use the rear brake and throttle at the same time to keep motor traction at all times. It may seem like wasting energy but this will give you more balance and control.

I also highly endorse this technique.  Dragging a little rear brake helps a ton!  You'll find yourself using the technique more often than you'd think AND you'll get a feel for the pressure required and power of the rear brake, which tends to get ignored by novice riders. 
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Brammo Empulse / Re: Slow Speed Maneuvering
« Last post by BrammoBrian on Today at 11:16:44 AM »
For a rider looking for an improvement in clutch feel and disengagement, I would highly recommend the Barnett Kevlar Clutch upgrade in the Aftermarket parts catalog.  This clutch has better fiber materials than the stock clutch and a little bit stiffer springs to help achieve the full disengagement at slow speed.  I've been using a Barnett clutch in my bike since the kit was available, and have been really pleased with the improvement.  I'm pretty sure that nearly all the bikes racing in AHRMA are also using this clutch...



Riding technique is largely based on what you learned to ride on and for those that learned to slip the clutch a lot to manage slow speed maneuvering, I think you'll be happy to get this feel back with the upgrade.  I typically don't slip the clutch at slow speed, but I will admit that it's come in handy once or twice in odd circumstances... For example, I gave a presentation at my wife's middle school, and they actually ASKED me to ride the bike through the halls!  8) Torquey bike on polished tile usually ends badly, so I was glad to have the ability to ride the clutch a bit to very carefully manage power delivery to the rear wheel.  You can go from looking like the coolest guy on the planet to the village idiot very quickly in that situation if you're not careful!  ;)
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Brammo Empulse / Re: Slow Speed Maneuvering
« Last post by skuzzle on Today at 01:13:10 AM »
When I pull the clutch, the motor does not always feel like it immediately disconnects the motor from the wheel, so I don't immediately begin coasting.  There is sometimes a delay of 1-3 seconds before the bike feels like it is coasting.  Do you experience this symptom?

I'm not sure that the clutch will ever completely disengage from the engine on the Empulse.  It is certainly not like a ICE bike where pulling the clutch doesn't feel like the bike is in neutral.  Sometimes I will push the Empulse from a charge station to a near by parking spot.  There is no difference between clutch and no-clutch when pushing the bike in gear.

I do think the slow speed throttle response is great.  We have a metered on-ramp near work that has an up hill run to the highway.  I would have to slip the clutch constantly on my old ICE going up the hill at rush hour.  With the Empulse, I cruise up at 2-3 MPH without stopping once or having to use a clutch.
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Brammo Empulse / Re: Slow Speed Maneuvering
« Last post by Shinysideup on September 13, 2014, 06:39:16 PM »
Gear lag?  I've noticed what might be the same thing, but I'm not sure from your description.

When I pull the clutch, the motor does not always feel like it immediately disconnects the motor from the wheel, so I don't immediately begin coasting.  There is sometimes a delay of 1-3 seconds before the bike feels like it is coasting.  Do you experience this symptom?

Yes I do, at slower speeds. But I think what MichaelJ may mean by "gear lag" might what I'd call "drivetrain slack", the clunkiness one hears and feels as the lash of the mechanical system is used up before forward motion begins.

I don't find either characteristic particularly bothersome in slow speed maneuvering, once I got throttle control dialed it. It's not so much that the throttle is "twitchy" as that it's just more delicate, requiring less inputs and more smoothness. Once mastered, I find I like it.

A tip for the OP's parking lot practice: put it in Normal mode and use 3rd gear.

After getting used to the Empulse, I hopped back on a TMax scooter and felt I had to jam the throttle half-way around the bar before anything even began to happen!

In so many ways, the Empulse rewards smoothness and precision. At the same time, I find it very forgiving at speed. But, man, is it hard to pick up by myself! :'(
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Brammo Empulse / Re: Slow Speed Maneuvering
« Last post by MichaelJ on September 13, 2014, 05:22:00 PM »
Gear lag?  I've noticed what might be the same thing, but I'm not sure from your description.

When I pull the clutch, the motor does not always feel like it immediately disconnects the motor from the wheel, so I don't immediately begin coasting.  There is sometimes a delay of 1-3 seconds before the bike feels like it is coasting.  Do you experience this symptom?
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Brammo Empulse / Re: Slow Speed Maneuvering
« Last post by plukcc on September 13, 2014, 07:19:11 AM »
electric bike don't have clutching problem , but it has gear lag problem !!!!

i suggest we have a addition mode,
While the brake is on, the system will check the speed of the bike and the gear position of the bike and add some power to the motor so that the gear is always engaged

the down size is more energy consumption but it will be a lot smoother especially when the bike accelerate in slow speed
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