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  1. Ricky_nz

    MAC rear hub casset freehub replacment?

    Hi All, Long time no see, I got busy with other projects and renovating my house after my accident 4 years ago so didn't do much ebike stuff. Anyway, the freehub rachet mechanisum on my mac motor with the cassette freehub has stopped working. Feels very sloppy as well as not locking. Does...
  2. Ricky_nz

    3D printing nylon

    Anyone else here 3d printing with nylon? I recently brought a 1Kg roll cheap ($35NZD) to have a play since I already make successfuly prints in both ABS and PLA and it seems to be working well. Being on sale I didn't get any choice of the colour but bright yellow is ok. Taking me a bit to get...
  3. Ricky_nz

    Damp CAv3

    Oops, Looks like I somehow got some water into my CAv3 when I washed my bike the other day. Also the weather is quite cool today which is probably not helping with the condensation. This much moisture is way too much for something that controls the throttle feed to my controller so looks like...
  4. Ricky_nz

    3d Printed ebrake sensor bracket for Avid Elixer brakes

    After my accident I decided to finally add a proper ebrake switch to my bike, well really while sitting in the hospital bed at 2 in the morning trying to sleep... Anyway I have finally decided to do something about it since I'm slowly getting to the point I might be able to ride my bike under...
  5. Ricky_nz

    Be careful how you setup your cycle analyst

    This is a excerpt from my crash thread that i think really needs to stand alone rather than being burried in my longish thread. It might save someone some pain... Crash thread here http://endless-sphere.com/forums/viewtopic.php?f=1&t=68791 Analysis of throttle response in my accident. First if...
  6. Ricky_nz

    oopsie. Ebike + Nephews are dangerous to uncles

    Hi All, Haven't been around here for a while. way too busy at work but now I have time on my hands for a while. Over easter my brother brought my young nephews down to visit and they had brought their bikes. After saturday morning helping to teach the youngest to ride his bike we went to to a...
  7. Ricky_nz

    MAC 10T Hub motor Repair

    Hi All Its been a long time since I logged in here. Ive been busy with non ebike things but it finally happened and I managed to grind off most of the cable where it enters the axel of my MAC 10T. I have been putting about 25KM per day, 5 days a week on this thing. So thought I would take a...
  8. Ricky_nz

    Replacment Spokes Mismatched gauges good enough?

    I managed to break some spokes on the way home from may last day of work for the year (Friday). I think a couple of spokes might have gone a few days earlier unnoticed but I had been working long hours and not really been paying attention. I knew I was due to tension the spokes up on the hub but...
  9. Ricky_nz

    Rebuilding Keewee stealth frame with a MAC rear Hub

    Hi All, After a few issues with ageing hardware and then cooking my cyclone 300W motor I decided to set this bike up as a reliable commuter. Although this is basically a kit install at this point I figured it might be interesting because of the drop-outs on this bike. The kewee Stealth is a...
  10. Ricky_nz

    Hack job to replace Rim on hub

    Wanting to have an ebike to bike to work on monday and while waiting for my new hub I Realised I had a slightly egg shaped rear wheel in the back of the shed with an alex DM20 rim on it so I decided to try lacing up my first wheel ever. Once I found my spoke wrench I removed the GM 1000W hub...
  11. Ricky_nz

    Oops I Fried it! 300W headline / cyclone

    Finally managed to cook my little 300W headline with an external controller I had the external controller start going intermittent and it rattled so I took it off the bike and round a capacitor can rattling around shorting out random things on the circuit board! a Wire had prevented it venting...
  12. Ricky_nz

    Watch your rim condition

    Hi all, Been a while, too busy to do much ebike stuff but this happened the other day on the way to work when I rode my hub motor powerd bike to work due to cooking my 300W cyclone motor but thats another story. This had some shall I say interesting handling characteristics and made some bad...
  13. Ricky_nz

    ECrazyman 6FET EB206-AS-1 Voltage Mod?

    Hi All, I give up, I've speed too long searching for the info so hopefully someone can point me to the right information to save me reverse engineering it. I have a couple of these controllers. 24V and 48V versions I brought a while ago and I am planning to rebuild the 24V for at least 67.2V...
  14. Ricky_nz

    Hall Sensor Brake Light Interface circuit

    OK. A while ago I played around with an analogue hall sensor that I plan to use to control regen from the brake leaver for my motor controller project but since I'm still working on that one I thought I would knock up a quick circuit to use an on/off type hall sensor to control the brake light...
  15. Ricky_nz

    New battery, Building a Pack from Turnigy Hardcase packs

    I decided it was time to build a new pack for my bike and take the old pack off to use for controller development. the battery is a few years old and still quite usable but I want more volts! The old pack is turnigy normal 5Ah 20C packs. My new pack is being made out of the cheap 4S 5Ah hard...
  16. Ricky_nz

    NZ Give Way rule change

    As of 5AM Sunday morning a couple of new zealands give way rules are changing So anticipating slightly more chaos than usual I have just replaced the brake pads on my bike. They were due anyway. The scary thing is how many people have admitted incorrect knowledge of the current give way...
  17. Ricky_nz

    How do I remove remains of a 2.5mm drill bit from a Heatsink

    Since I'm an electronics and software engineer and not a mechanical engineer I need some help... I was in the mood to drill a couple of heat sinks for some of my controllers and that bloody Murphy showed up and let me get half the holes in the first heat sink drilled and then broke the bit...
  18. Ricky_nz

    bearing size for the sick bike parts freewheel?

    Hi All, Just noticed today that my sick bike parts freewheel has increased its side play to the point that I figure failure is on the way rather soon. It is getting sideloads and also it is being run at several hundred RPM on my bike :lol:. Does anyone happen to know the bearing number off...
  19. Ricky_nz

    Guy Fawkes and LiPo

    Any one else use Guy Fawkes night as an excuse to cook some LiPo. I figure its the best time to avoid neighbours getting concerned. I had just one cell to destroy this year and I think I got the recipe correct. E6_iNxHy9fg The clip leads burnt off their insulation. I used wimpy ones as a...
  20. Ricky_nz

    Using AC Breakers for DC

    I was looking at some information for some commonly used (in NZ mains panels) Schneider din rail breakers and the following information caught my eye This implies a relatively cheap source of breakers for common ebike voltages. The C60N is available in 1, 2 and 3 poll (There is actually one...
  21. Ricky_nz

    PCs and Power Bills

    Well I finally got around to transferring everything off my old server PC. A Dell PII 450Mhz brought sometime in 1998. Its been powered up for all that time apart from when moving house etc. thats 13 Years. ( Its on its third hard disk. 10G -> 45G -> 120G ). I was curious how much it has cost...
  22. Ricky_nz

    If you think lipo is dangerous... Try steam

    I stumbled across this video. t93QlgBu4Is poor brakes, boiler, fire what could go wrong. Apparently the original did 60mph :shock: Positively makes a lipo powered mountain bike seem very safe.
  23. Ricky_nz

    V Brake upgrade

    Hi all, I upgraded the V Brakes on my old hub motor bike to some new ones and got some good benefits. It originally had old shimano ones that took pads with the splined shafts and I swapped it over to some new Avid digit 5's. These take the newer style bolt on pads. 1) More clearance on both...
  24. Ricky_nz

    Hookworm rim campatibility DM18

    Hi all, The other evening I was working on my bike and swapped out the rear wheel as the one it had had a a couple of broken spokes and several lose ones and was a bit too egg shaped (rode up a big curb at too much speed and didn't get the back wheel up enough a while back :oops: ) so the new...
  25. Ricky_nz

    Rickys High Power Flexable motor controller

    After a few suggestions and the fact that the controller part fits better in the technical forum I will be placing future controller related information in this thread and leaving the old thread for the mechanical / bike part The old thread can be found here...
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