Search results

Date Relevance Most replies

  1. S

    Kollmorgen HiKol 400W CCW motor in homebuilt test

    I used a Cyclone 44T sprocket with freewheel mounted on Cyclone crankset. I drilled & bolted chainrings from original crankset to the outside of the 44t sprocket so all sprockets freewheel together. E-drive chain runs from the 44T up to the output sprocket on the jackshaft. I used an AC Racing...
  2. S

    Mounting your battery, Center of Gravity.

    That bike dynamics and behavior are continuing topics of discussion is pretty good proof that there are many theories and ways to look at the topic; not just Safe's and certainly not just mine. I have no illusions of exclusivity. Safe does.
  3. S

    Mounting your battery, Center of Gravity.

    Why is it that the blind and the desperate inevitably resort to obnoxiously large, bolded, italicized fonts when flailing about like you? Oh, yes - Let's not forget annoyingly large, colored illustrations, too. Perhaps you should post at a mortorcycle forum, as it's obvious that's what you are...
  4. S

    Mounting your battery, Center of Gravity.

    Ah....I see now.... Let's change the definition of "ground" so that Safe can remain THE AUTHORITY....... Paradigm shift - The ground does not move up - the bike leans down. I know its hard, Safe...... (If you write "countersteer real often and add large pictures, do you get excited?)
  5. S

    Mounting your battery, Center of Gravity.

    "We", of course meaning "Safe"... Nope - I specifically said consider the bike's lean in relation to the ground reference frame. Bikers are concerned with the ground. Pilots are concerned with the horizon. Again safe continues to assert what is clearly debatable, as though it were not...
  6. S

    Mounting your battery, Center of Gravity.

    Safe- From the reference frame of the contact points with the ground and their path along the ground - which is, after all, what one is ultimately controlling on a bike, the term is most definitely 'lean'. "Roll' would be rotation about an axis along the line of equal moments through an...
  7. S

    Mounting your battery, Center of Gravity.

    Should be "lean behavior". Shift the frame of refrence to the contact points with the ground - then take note of the moments of inertia above those points and the reactions to leans and turns at various speeds to understand bike behaviour.. We're not flying airplanes here... I want to see Safe...
  8. S

    Understanding Bike Stability

    I'm still letting these articles sink in - have to 'sleep on it' a bit, probably. I have 30 lbs of sla's above my rear wheel & a lightweight motor , jackshaft , sprockets & chains mounted under the top horizontal bar of my converted roadie bike.. My bike is extremely stable when riding at any...
  9. S

    Understanding Bike Stability

    A new thread to start this topic anew.... A starting point: Read these articles first: http://en.wikipedia.org/wiki/Bicycle_and_motorcycle_dynamics http://www.dclxvi.org/chunk/tech/trail/ EXCELLENT explanations of factors affecting bike stability and control!
  10. S

    Mounting your battery, Center of Gravity.

    What would be the most optimum location on a bike for helium gas bags to conter those heavy SLA's? :lol:
  11. S

    Mounting your battery, Center of Gravity.

    ....Now if somone could do a dynamic analysis of the path my body took 15 years ago after I went over the handlebars at speed after getting hit in a turn and split ny helmet against a mailbox.... I wasn't awake for the flight and I've always been curious if I flipped before I woke up on the...
  12. S

    Mounting your battery, Center of Gravity.

    Whoops! Obviously, the large paragraph entirely underlined in the above was supposed to be a quote, not underlined. Heaven knows I don't want to take responsibility for having written that paragraph :D
  13. S

    Mounting your battery, Center of Gravity.

    No, not really. There problem there where you are may very well be that you are closed to any ideas but your own. But if you were on a mountain bike and located your batteries low on the bike in a spot like behind the front wheel (or even attached to the front wheel like that one guy did) you...
  14. S

    Mounting your battery, Center of Gravity.

    The leverage you refer to is the mass of the rider. The rider effects and affects the entry into a turn by adjusting his weight. We call that "control". The mass of the bike does not effect control of the bike entering a turn, but adds inertia, or resistance to entering a turn as the rider...
  15. S

    Kollmorgen HiKol 400W CCW motor in homebuilt test

    Yep, I saw that online also. It involves digging out thge resin that the controller circuitry is embeded in at the backside of the motor and changing a wire shunt connection from one point to another. I understand that there is another shunt/wire manipulation that will switch the motor controll...
  16. S

    Kollmorgen HiKol 400W CCW motor in homebuilt test

  17. S

    I need some help figuring out gear ratios.

    A chain tensioner is always a good idea, as even in the best set up, a new chain will stretch a bit and then more as it wears over time.
  18. S

    Mounting your battery, Center of Gravity.

    I'll "throw this up" for discussion..... What effect does the groscopic effect of the rotating tires have on the ground-track path of a moving bike .... on a moving motorcycle (much heavier rotating wheel mass, higher speeds). How would it differ between a motorcycle and a bike?
  19. S

    Kollmorgen HiKol 400W CCW motor in homebuilt test

    Recently finished installing a Kollmorgen HiKol 440W CCW motor in my converted 10-spd road bike. This is the counter-clockwise motor version that can be had cheap on line - I got mine for $49.00 new. Installation consisted of: Reverse the one way needle bearing clutch in the output sprocket...
  20. S

    Mounting your battery, Center of Gravity.

    "Gentlemen"...... Frankly, I dont care a rat's butt about colored diagrams and the behavior of higher-speed, heavier motorcycles with heavier tires (more rotating mass at higher speed = much higher groscopic effect)..... Oh no, I'm doing it too! Seriously, I'm WAY more interested in real-world...
  21. S

    Mounting your battery, Center of Gravity.

    I was thinking to create a similar "off the axle" hanging battery system, but off the rear axle, with pannier-type bags to either side of the rear wheel. I was thinking to mount two battery trays at about axle height and enclose them with the panniers, perhaps cutting out the back and bottom of...
  22. S

    overvolting bike lighting

    I've been using these same lights on my newly finished e-bike. I used them before I converted the bike, too. I got mine at a local Rite-Aid drug store for less than $4 each. These are rubbery plastic bodied mini flashlights. 3 AA cells, 9 LED's in each. 4.5 volts supplied to the LED's. I'm sure...
  23. S

    Mounting your battery, Center of Gravity.

    I might fabricate a couple of carrier trays to place the batteries at the side and below the rear axle (low). The "stealth" aspect of the bike is paramount, though, because I live in New York State, where ebikes are specifically not legal to ride at all. (There's been a bill proposed in each...
  24. S

    Mounting your battery, Center of Gravity.

    Handling with the large pack over the rear wheel is quite adequate for commuting. It's only a bear when 'walking' it as it is considearbly top-heavy. That is due to the height of the mass, not it's front/back distribution. When riding, it's mass is not a problem at all - just not as "nimble" as...
  25. S

    Mounting your battery, Center of Gravity.

    I just completed a "stealth" converssion of a $40 old Royce Union 10-speed road bike to an electric commuter bike for my 22 mile daily round trip to work & back. What was a light, nimble bike now has about 9 pounds of motor/drive unit hung under the top horizontal frome tube (clamped to the...
Back
Top