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About gwhy

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    E-sherco E-bmx

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  1. Lead will normally not give such a surge as lipo can, this is just because lead has a higher internal resistance. With the bike rear wheel off the ground can you roll on the throttle with no surge ? ( can you make the rear wheel move at a very slow speed ). Nearly all electronic throttles have some initial play before they start driving the wheel, there are electronic devices that will allow you to map the throttle movement so this free play can be taken out. Its not advisable to use the rear brake to slow the control down as this will be putting more stress on the battery ( higher load and will run down the battery quicker than normal ) but I understand that it can be necessary for slow control but rear brake should be applied when rolling the throttle off ( if that makes sense )
  2. gwhy

    Oset 24r power limit.

    its not daft .. as you can run it at a lower wattage by using the power limit pot as this is what it does.. Battery voltages are listed as nominal voltage not fully charged voltage, so it all depends what chemistry is used in your cells and how many.
  3. gwhy

    Oset 24r power limit.

    What he said ^^^ But no matter what you do with the power it will never be no where near legal to ride on trails as it will have no tax and no mot and no registration ( well in the uk anyway ).. it would be very easy to set up a switch but you would need to measure the resistance of the dial at the limit you want then replace it with a fixed resistor.
  4. http://www.rc-hero.co.uk/jst-xh-parallel-balance-lead-5s-250mm-6xjst-xh-paraxh5s-6 yes, you will need 2 of these ... 1 for each P'ed set of batterys. yes you will need to leave them connected to the batteries for charging And discharging, you can then also use the LV alarms, treating each block of 3 P'ed batteries as just 1 battery with 1 balance tap lead.
  5. gwhy

    Oset 20 lite

    do the indecator show fully charged again soon after he releases the throttle ? , or do it just stay at empty ?
  6. as long as the batterys physically fit in the space then larger capacity batterys would be fine as also as long as all the batterys are the same make and capacity. it the batterys are the same voltage and chemistry then the stock charger should also be fine ..
  7. gwhy

    Oset 24.0R

    Sag is set depending on the weight of a rider . the manual is prob a generic factory setting for the shock. Mountain bike shocks dont have the same dynamics as a mc shock so things will be different.
  8. gwhy

    Oset 24.0R

    sag should be setup with riders weight i.e with rider onboard and should be around 10-15mm for the rear and it normally higher for the front . bounce about a bit on the bike before taking any measurements..
  9. gwhy

    Oset 20R Throttle wiring

    Yes it can be changed for a pot throttle.. but the throttle may need a bigger initial movement to start the motor also you may have to put a external resistor inline with the pot to give you the correct WOT voltage. The design engineer is correct about changing the power on the fly and can not be done.. but it can be done with some additional electronics that is totally separate from the controller.
  10. gwhy

    Oset 20R Throttle wiring

    if it is a hall throttle on the oset then you need to work out the +5v supply wire and the ground wire to the throttle and the signal wire ( in the wiring diagram it is not clear what wire is what and there is no color code ) with the domino pot throttle the wiper of the pot will connect to the signal wire and the +5v and the ground to either end of the pot ( if the signal wire is connected to the wrong point on a pot throttle this may damage the controller! )
  11. gwhy

    Oset 16 wont run

    A mechanical relay on anything is always a 98% bad design , when there are much better and more reliable switch options this day and age :-)
  12. gwhy

    Oset 16 wont run

    there was no need to disconnect the neg at the controller , should have just clipped the neg meter lead to the neg of the battery then carefully check on each pin of the relay. With key switch on yes you should have full battery voltage on 3 of the pins and 0v on the 4th relay pin ( black wire ? ). The relay ground goes directly to the controller ( on the oset diagram that i have ) so now if you still have fully battery volts on all 4 pins then now connect the meter neg directly to the black (thin ) wire connection on the relay then measure the the other 3 pins they should have fully battery voltage on each pin with key switch on.... with the key switch off you should only have battery voltage on 2 of the relay pins ( 1 red thick wire and 1 red thin wire) ... the fact that you had 36v on all 4 pins from your tests I would check connections and wires ( black thin wire ) from the relay back to the controller ( it may not be a black wire because you have upgraded the controller). edit: i just re-read my previous post and it should read with key switch OFF , I have just also thought that if you installed the resistor when you upgrade controller then if the back wire ( thin wire ) from the relay to controller is broken and that will give you 36v on all 4 pins of the relay with how you have measured it
  13. gwhy

    Oset 16 wont run

    connect the negative meter probe lead directly to the neg of the battery then the pos to each of the thicker wires on the relay, key switch on you should have full battery voltage on only 1 of the fatter wires on the relay (red wire), if you dont have any voltage then it could be the key switch itself , report back if you still have no voltage..
  14. gwhy

    Oset 16 wont run

    have you checked the voltage at the relay when you turn on the key switch .. do the relay click on ?
  15. gwhy

    Dead Oset 20R

    Also on a side note.. always put at least some charge back into a battery fitted with a bms after use especially if you don't intend to use it for a good few days, no need to fully recharge it .. charge for maybe a hour before storing it. and always disconnect the battery from the bike never rely on the key switch you fully turn the bike off especially if the bike has a pre-charge circuit fitted as this will drain the battery.