Endless Sphere

.....Same setup but with a 100A K-force. Not so good. For some reason the Throttleizer could not control this ESC and wouldnt limit max current or modify the ramp what ever the settings were. rode like I just had a servo tester fitted and the lack of ramp saw the motor loose sync under quick accel....

you need to treat those list as "possible" motors, rather than "proven to work" motors. EG : i dont think anyone has actually run the Scorpion motor, and the Aerodrive motors whilst seeming ideal from a size, power, kV, point of view...are lacking a skirt bearing i believe, which...

I dont want to complicate this but just a thought.. Is it worthwhile also posting up component combination that are known to give problems ? It may help steer people away from poor decisions. As someone else mentioned, it would be neat to compile a "Matrix" of component combinations with a...

The problem with the rear motor cable entry is largely down to the requirement for a disk on 1 side and a freewheel on the other. There is very little room to fit oversized bearings and bring the cable out as would be ideal. ... why doesnt someone make a 19 - 20 mm motor spindle set up ? something ...

The other option for designers who crave an RC-motor is to add hall-sensors and use a larger 6-FET Infineon controller,....! SM, I have also considered this option, however,i am having trouble finding a sensored controller that will happily work on the 18-22v range and cope with the high current 60...

well, the "EVlogix" throttleizer certainly seems to have some build quality issues, but some seem to use it effectively, others have used Matts system, and others have built their own based on various servo testers or basic components. I just suspect that these various different components...

EVTodd wrote: I think what we need to do is compile a list of known to work controller/motor combos. That would be a bit more productive.

and i would suggest we need to include the Throttleiser system as part of that list too

The Hyperion Z4045 http://aircraft-world.com/prod_datasheets/hp/z40/z40all.htm is a 48mm dia motor that Kepler has shown works well. It fits the bill nicely,.... low kV, skirt bearing , etc, however it (together with the Scorpion http://www.bmkdesigns.net/scorpion-4025-16-332kv-2000-watt-brushless-m...

OK then , open question to all.. If I have to assume that Turnigy, HTX etc should all be treated with some degree of doubt. ! ...... .... what would be the best motor options for the direct friction drive set ups ( Ala Kepler) , to minimise the "pot luck" risk of sync failure etc. ?... Spe...

,............ you cannot have a sync issue with a Castle ESC and a good motor. What the controller will do if you give too much throttle at too low an RPM, the controller will go into "Stuck Prop" mode which merely requires letting off the throttle and getting back on it........... sorry ...

That is a great bike at a good price , but.. ... is it the right bike for your " on road commuter" task. ? if you need frame space for batteries, why compromise with limited frame space on a DH frame ? There are plenty of more suitable frames for commuting that would give you a better &quo...

If you look at the 3 videos at the bottom of page 3 on Oatnets build thread ..
http://endless-sphere.com/forums/viewto ... 9&start=30
..you will see the drive "jump" and stop when he starts it....That is the drive losing sync.

His sync issue wsa from the motor, not controller. do you mean because he had a "cheap" motor ? or some other issue with that particular motor ? . It tends to be hit or miss with the cheap parts. ... That was my point from the start...but i am not yet convinced that some of the "expe...

could Oatnet possibly be interpreting the throttlizer issues as ESC sync issues seeing this is his first non frock build of this kind? KiM his build video's show the sync failure was evident before he had the throttleiser ...just trial running with the servo tester. .. but i agree, there could well...

Lots of good advice and experienced comments here, but i think the only common ground is ..."use a good / not cheap/ or Castle, ESC. That is ok except you have to figure out what is good ,or not cheap ? ( is a $65 , 100a, ESC "cheap" ?) Remember i am not refering to the mechanical or ...

RC systems do have their downsides. However, saying they are unreliable and prone to sync issues is not true if decent components are used. Matt Matt, I am sure that is true, and your experience has led you to those components (Astro , Castle etc) that give that reliability however,... ... you will...

Slipping off topic a little but...
Has anyone yet "programmed" one of these motors play a tune ?.. ( remember the Renault F1 .."we are the champions" )

It just seems that Brusless outrunner or Inrunner , is the term commonly used to identify them currently. If you go into an RC hobby store and ask for a "High Speed RC " motor, you are going to have a lot of explaining to do as to why you are calling one of the slowest motors in the shop.....

Yeah, I hate calling them RC motors, too. How about "H.O." (High-speed Out-runner) or "H.I." (High-speed In-runner)? :) Well , i wouldnt exactly call the motors we use "High speed" compared to other motors in the "RC" field. ( 40-50k rpm) ........In fact , i ...

Maybe i am missing something .(i certainly lack the extensive experience of these systems that come of you already have )... ... but my experience so far with these "RC" drives has been disappointing and frustrating. It seem to be easy to assemble a system from "proven" commercia...

I'm having a hard time feeling sorry for this fellow. $egway - with their massive multi-million dollar lobbying machine - has had a huge detrimental effect on the use of other two-wheel electric scooters throughout the United States (and the world). As a result, in many places $egways are the only ...

Its a bit judgemental to call a RTA... "murder" !
.. Harley rider without a helmet ?... it might be more accurately described as .."Suicide"

gestalt wrote:

Hillhater wrote:..And the price is ....????

tough to say, they have a 36v 10ah beach cruiser with a sturdy rack, what looks like a 9C and a classy yet spartan build. the thing runs about $1600,...

That is the base bike. ... how much for the fuel cell ?

Don't get too excited jmy, the 3-speed gears are only for the pedal input......... Ahhh well, i guess we can call that a "near miss" ! :roll: Maybe these motor designers are all electrical based , but why is it they just dont seem to see the advantage of gearing and torque multiplication ...

I am only wanting a reliable assist type drive for hills etc so 20-25mph will be more than enough, I know from tests with this 63mm , 250 kv, motor that even with only 5s, it may end up being slightly more. really a lower KV motor or a smaller dia motor would be better suited i guess. Thanks for the...