D
Deleted member 803
Guest
Bought an ST2 today and will have in 10 days. Let's ride!
Using the manual regenerative braking feature
- Thread starter Soquel
- Start date
D
Deleted member 803
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Black
Headshake is not common on motorcycles. You hear rare tales of it and many if not most are modified Frankenbikes with non stock suspension setups or high speed custom race bikes. Seldom does a production motorcycle make it for sale that tries to kill it's rider.
And next to no cycles come with steering dampers. Those that are are usually high dollar race/track type bikes and it's for high speed stability more than to counteract a manufactured defect. Headshake shows in prototypes and is engineered out.
D
Deleted member 803
Guest
What motorcycle do you ride? Most of the high end sport bikes I've ridden have had some level of headshake, or tank slapping as it is called. I've added steering dampers on my bikes to resolve this issue. Today, most high speed sport bikes contain built in steering dampers to eliminate the problem.
No, sorry, they don't. List the bikes that come with a damper and lets see how long that list is.
I currently ride a DRZ 400E motard and XR350 dual sport. Last sport bike was a Honda VTR1000 Superhawk. I've owned 19 bikes and ive not experienced head shake. Ever. Nor a tank slapper, which is headshake at 10/10 and usually results in going down.
D
Deleted member 803
Guest
My BMW S1000R has a built in steering damper as does the new Yamaha R1. My old Kawasaki Concours had a steering damper. Not sure we live in the same motorcycle world.No, sorry, they don't. List the bikes that come with a damper and lets see how long that list is.
I currently ride a DRZ 400E motard and XR350 dual sport. Last sport bike was a Honda VTR1000 Superhawk. I've owned 19 bikes and ive not experienced head shake. Ever. Nor a tank slapper, which is headshake at 10/10 and usually results in going down.
Jed Charlesworth
Member
Soquel
Are you holding - for 3 seconds then tapping ---- to bring up all the bars.
Agreed, I live in the real world. Try a list. Those are two extreme superbikes (170+hp) and a super heavy full dressed tourer. Anybody can look at bikes and SEE that those are exceptions and that 99% of motorcycles doin't have steering dampers. (or experience head shake).
D
Deleted member 803
Guest
More and more vendors are including dampers in their bikes as standard equipment:
On motorcycles[edit]
Sport bikes have a short wheelbase and an aggressive steering geometry to provide the ability to make very quick changes in direction. This has the harmful side-effect of making the bike less stable, more prone to feedback from uneven road surfaces, and more difficult to control.[1] If the front wheel significantly deviates from the direction of travel when it touches down, it may cause an unwanted wobble. Steering dampers are factory installed on some high-end sport motorcycles and fitted to most contemporary racing bikes to counter these behaviours. Steering dampers are also mounted to off-road motorcycles such as motocross bikes.[2] A damper helps keep the bike tracking straight over difficult terrain such as ruts, rocks, and sand, and also smooths out jolts through the handlebars at the end of jumps. They also reduce arm fatigue by reducing the effort to control the handlebars.
Rotary motorcycle steering damper (centre left)
On motorcycles, one end of the damper is mounted to the steering yoke or triple tree, the other to the frame. Two main types are linear and rotary. Linear dampers resemble a telescoping shock absorber and operate in a similar manner. They can be aligned either longitudinally and to one side of the steering, or transversely across the bike. Rotary dampers resemble small boxes and operate via a rotating pivot. They are mounted coaxially with the steering axis and are typically located on top of the steering head. An electronically variable damper uses a rotary damper with hydraulic fluid that flows freely at low speeds, allowing easy turning, while restricting flow at higher speeds when more damping is necessary, as determined by the engine control unit.[1]
For motorcycles with sidecars, especially for motorcycles which have been retrofitted with a sidecar and where the front wheel geometry, or trail, has not been adjusted for use with a sidecar, a steering damper is beneficial. This prevents low speed wobble which may occur in the lower speed range of about 13 to 20 mph. In older motorcycles adjustable friction dampers had been routinely installed. Hydraulically operated steering dampers may be retrofitted. In some jurisdictions, the installation and operation of a steering damper must be inspected by an expert or examiner and must be entered in the vehicle papers.[3]
Hi Jed,
I am holding for 3 secs. I was questioning the idea that the manual regen should stop when pedaling starts or the brakes are applied... am I wrong there?
Ravi Kempaiah
Well-Known Member
- Region
- Canada
- City
- Halifax
It is very much possible to maintain 20sih speeds during your long descent and do substantial recoup.
During the early phases of descent, if you engage one or two bars of regen, the bike will slow down.
If you wait for the bike to reach 30ish mph and then engage regen, it won't work.
11 mile descent should give you 3-5% back and save your rotors/ calipers wear tear.
Anthony
New Member
:Hey there 86 and Kicking and John from Soquel. I live in Pleasure Point and ride to the Westside each day to work. I have about 1400 miles this summer on my bike. I would be nice to say hi over a cup of coffee at Peet's or my favorite Verve. Let me know if you are up for that. I would have to show up a bit early to get to work on time. I have to leave at about 730 AM to get to work "with out sweating". -Anthony
D
Deleted member 803
Guest
Anthony: Great, I ride very early each day and can meet you early at either place. Taking my grandson to Bouchon in Yountville for my anniversary tomorrow but Friday or the weekend works for me. Just pick a day and time and I'll be there.
Jed Charlesworth
Member
Yes it stays on so you can add energy. Manual re-gen shuts off automatically if you stop then go or get really slow. If i have a strong tail wind and am on a flat trail I may regenerate at one or two bars and pedal along charging my battery. Most bike trails have speed limits of 15mph.
More and more vendors are including dampers in their bikes as standard equipment:
On motorcycles[edit]
Sport bikes have a short wheelbase and an aggressive steering geometry to provide the ability to make very quick changes in direction. This has the harmful side-effect of making the bike less stable, more prone to feedback from uneven road surfaces, and more difficult to control.[1] If the front wheel significantly deviates from the direction of travel when it touches down, it may cause an unwanted wobble. Steering dampers are factory installed on some high-end sport motorcycles and fitted to most contemporary racing bikes to counter these behaviours. Steering dampers are also mounted to off-road motorcycles such as motocross bikes.[2] A damper helps keep the bike tracking straight over difficult terrain such as ruts, rocks, and sand, and also smooths out jolts through the handlebars at the end of jumps. They also reduce arm fatigue by reducing the effort to control the handlebars.
Rotary motorcycle steering damper (centre left)
On motorcycles, one end of the damper is mounted to the steering yoke or triple tree, the other to the frame. Two main types are linear and rotary. Linear dampers resemble a telescoping shock absorber and operate in a similar manner. They can be aligned either longitudinally and to one side of the steering, or transversely across the bike. Rotary dampers resemble small boxes and operate via a rotating pivot. They are mounted coaxially with the steering axis and are typically located on top of the steering head. An electronically variable damper uses a rotary damper with hydraulic fluid that flows freely at low speeds, allowing easy turning, while restricting flow at higher speeds when more damping is necessary, as determined by the engine control unit.[1]
For motorcycles with sidecars, especially for motorcycles which have been retrofitted with a sidecar and where the front wheel geometry, or trail, has not been adjusted for use with a sidecar, a steering damper is beneficial. This prevents low speed wobble which may occur in the lower speed range of about 13 to 20 mph. In older motorcycles adjustable friction dampers had been routinely installed. Hydraulically operated steering dampers may be retrofitted. In some jurisdictions, the installation and operation of a steering damper must be inspected by an expert or examiner and must be entered in the vehicle papers.[3]
Ok thanks for the explanation. Doesn't change the fact that 99% of motorcycles DO NOT COME WITH STEERING DAMPERS........
Ok thanks for the explanation. Doesn't change the fact that 99% of motorcycles DO NOT COME WITH STEERING DAMPERS........
You point out the exceptions.................... and what motocross bikes come with dampers? Can't think of any of the Japanese bikes. Honda, Kawasaki, Yamaha, Suzuki. ????
I don't disagree that a FEW motorcycles come with dampers. Or how they work. Or that they are needed on some bikes.
Just that it's common.................... it ain't.
Rick Huizinga
Active Member
Following this same logic, I've increased the setting for regeneration while braking to the maximum setting. I.e. Why not recover as much energy as possible during braking while minimizing the wear and tear on the braking system? However, I am now noticing some creaking when transitioning from power delivery to power recovery which I suspect is coming from the spokes rubbing against each other. I think the reversal of torque on the wheel reverses the forces through the spokes (i.e. some spokes push, some pull depending on the direction of the torque), and I'm now questioning whether I am trading brake wear and tear for rim & spoke wear and tear, especially where the spokes are attached to the rim.
Ravi Kempaiah
Well-Known Member
- Region
- Canada
- City
- Halifax
The controller is designed to output 25A continuous, but in recoup mode, it's limited to 15A to save itself from overheating.
Bikes don't have the same rolling momentum as cars and I suspect that is one of reasons for that amperage discrepancy.
