AussieJester wrote:I think Technically, An "RC" Build is only that if you use a motor designed for use in a radio controlled model...a cyclone
setup isn't an "RC" setup, it was designed for an e-bike... That said, if you are dead set on giving this mid drive setup a ago i would skip the cyclone and go directly to the Astro or Turnigy with a recumpence drive they are tried and tested no messing about bolt em in and they just work...left to buy after reduction drive (motor and batteries aside) a freewheel a sprcocket adapter sprocket throttle and throttle interface of some kind (Matt does the servo tester 'kitted with magura throttle') You can also use the Cycle Analyst RC version for throttle interface, i use it its freakin awsome... A little birdie did tell me there might also be another very affordable reduction setup available soon, keep an eye out in the forsale section of ES...might be a 2 speed or 3 if your quick also
Best of luck
sn0wchyld wrote:haha so sorry aj, a MID drive build then. didnt mean to cause offence .
flyinmonkie wrote:If you are worried about the complication of the RC setups (throttle and controller set up) then a BMC 1500w or 2000w could be a good a option. You can get them at superkids.com with controllers and throttles. Then it would be a plug an play system as far as hooking up motor and controller. You would have to make a motor mount and possibly a reduction. You might be able to adapt one of Matt's V1 or V2 drives to fit a BMC.
Keep an eye on what Matt is doing. He is asking for recommendations on ideas for a new drive.
as to be honest Im not sure I want to take on a 80-100 with all the hall placing and custom reduction drive, plus they seem a fair whack noisier too (riding this on trails etc, so quiet = good).
sn0wchyld wrote:and AJ, are these the guys your refering to? looks like they're USA based? if so, how quick are they on shipping?
Kurt wrote:I guess you have to work out a budget. Spend the money where it counts.Think hard about what you want the bike to do 90% of the time and be realistic about what kind of performance your budget will buy.You don't want to build somthing that's on the ragged edge of performance and get dishearten when you need to replace a $600 motor or $300 controller.
AJ wrote:A little birdie did tell me there might also be another very affordable reduction setup available soon, keep an eye out in the forsale section of ES...might be a 2 speed or 3 if your quick also
A little birdie did tell me there might also be another very affordable reduction setup available soon, keep an eye out in the forsale section of ES...might be a 2 speed or 3 if your quick also
Did this birdie happen to mention the ratios of the three speed?
flyinmonkie wrote:So you haven't heard from Superkids either. It is a shame, because I have had good service from them in the past. It would be nice to just hear if the BMC scooter motors are available or not or if they expect some soon. If they has some I would have one on the way.
Anyway, I'll be watching to see what you come up with as well. Good luck
Gregory wrote:Timma was selling a matt s reduction drive in the for sale - new section of the forums.
bandaro wrote:I would suggest an rc, they may be a little more noisy, but you can get 3kw easily from a 800g motor, the main problem I have with them is fitting a multi stage reduction to the cranks so they are not spinning at 500 rpm. Looking at the bldc motors, one was 8.8kg and only managed 800 watts, so for me personally that is far too heavy, the whole unit including batteries is that weight, and manages 3kw...
Similar problem with hubbies, they are heavier than a well designed reduction system, and for me weight is more of an issue than noise. I am currently several versions into a brushless bb drive, will cut the gearbox out wednesday (already have an mdf one so it will fit) then it is just wait for a new motor and sprocket and it will be done. Also looking into rewinding a motor, finish them in wye with more turns and the reduction can be considerably smaller, albeit at the cost of a little power.
For price, research goes a long way. Spend a little more and get what goes straight onto your bought parts instead of modify them, belts can be very finicky compared to chain, so design it with care. Also, get lipo straight up. The little things go a long way, I have spent $3000 over my builds, actual parts on my current one are under $1000 easily, more like $800 or less.
Superkids.com, placed an order, checked it a few days later, and it had been rejected, no explanation and they didn't even bother to tell me. Don't bother.
flyinmonkie wrote:At least you heard something back. I still have not after 3 emails. Good luck with your choice. I might try emailing BMC directly to see if they have another retailer for them, or if they are putting any stock out soon.
I am really starting to lean towards a 1200w cyclone. I have heard good things about the motors themselves. It is just everything else that is junk. They are also noisier due to the gear box. It would be nice if you could get the motor with a smooth shaft (unsplined) an no gear box. I already have a reduction drive.
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