High power RC motor and drive unit production

[recumpence]

Wow, quiet lately!

----Insert cricket sounds here----

Only 5 of the first 12 are spoken for so far.

Hmm, I'm glad I didn't make more than 12 to start with.

Who else wants one?

Matt

 

[safe]

Who else wants one?

When the first ones get onto their bikes and people start getting excited about all the power they are getting out of their RC motors that will ecourage others to get one.

These things build slowly... and the economy sucks so people are hesitant to spend.

You have a large "fan club" that is watching your progress.

---------------------------------

Maybe one day when RC motors are standard on all high end ebikes people will talk of Recumpence on endless-sphere as:

"The Father of RC Motors used on Ebikes"

...so be patient. :wink:

I might be buying one someday (because I agree that the motors are better by far), but I'm really cheap, so I will be slow to make that decision.

-----------------------------------------

Taking the massive power (and small size) of these RC motors and combining it will the frame and fairings of my ebike genre would produce an incredibly high performance bike. So I'm definitely thinking about it.

 

[nomad85]

I'll take one (pending a few requirements) I'll pm you.

 

[recumpence]

I do not mind it going slowly. Heck, I am working on some custom stuff for D anyway.

I just figured they would all be spoken for by now and I could reserve a couple days for my production machinist to make a couple dozen more.

Anyway, I am excited about all this!

Matt

 

[Ypedal]

PM sent ! :wink:

I need to read back quite a few pages to get up to speed on what i need/want.. but keep one warm for me plz !

 

[AussieJester]

How will these outrunners like moving my fat ass and my trike
pulling my wheelchair with no slipper clutch seeing i cant give
it any assistance via peddling or "peadling" as dogman calls it Matt?

Any pics of the drive with motor installed I know i saw one or two pics here
but i just looked back and it eluded me...emails them to me if its easier you have my address
perhaps a quick re-cap on dimensions (height and width please)
So i can see if i can squeeze the unit into the place the Unite motor now takes
up, and if not what i need to extend to make it fit as i am working on this section
of my new rear end today...!! I'll very very very seriously consider buying
one of the 12 you have I also thought they would be pre-sold hence i didnt jump at
it when you mentioned it yesterday too me...SO...if you think the motor would be up
to the job of hauling my heavy setup, it will HAVE TO BE quick off the line no exception
my Unite powers hard from the moment i twist the throttle...the RC motor would HAVE TO BE better
for me to go with it?

If you could recommend the best bang for buck motor (i knoiw u have back in the thread somewhere)
that would be best for my application along with ESC (remembering i regularly pull 120amps)
and you know the dimensions of it if extra milling is required to the unit please feel free to suggest away.

The belts for the pulleys Matt are they supplied also i'm assuming so..?
Apologies if i have missed it the thread has moved along so fast and i havent
checked it daily my bad...I would like the drive to power the opposite side
(non sprocket side on normal bike) same as i have it setup now...i need to
see this drive can't picture the damn thing LoL :: heads off to re-look for pics again ::

You do use PayPal im assuming?

Regards

Kim

 

[gogo]

I'm interested but was hoping to see a few examples of successful implementation before proceeding. That and I find out next week if I'm one of the 6-8% getting laid off at my place of employment next week.

 

[Diamondback]

i could be interested, but i have a question about motors.....

are there any RC motors out there that work well with only 24V ?
the reason i ask, is that i have just spent a packet on a new LiFe battery and charger ($1310 AU)
for obvious reasons, i don't want to start all over again from scratch.

if there is an RC motor that will run well on only 24V, can someone point ,me in the right direction ?
if not, i guess ill just have to wait till something on my current setup fails before i start changing things.

Jason.

 

[AussieJester]

i have just spent a packet on a new LiFe battery and charger ($1310 AU)
.

Good lord $AU1310 for a 24v Lifepo4 setup? is it encased in gold or something LoL
What supplier was this from, must be some quality gear for that coin...Thundersky 48v 20ah
setup comes in 300 bucks under that ;-S

You can get outrunners that run on 24 volt I had one in one of my RC Helis ...
no idea if these larger ones the fellas intend using on their rides are capable
of performing well on lower voltage though...

 

[recumpence]

Most RC motors are available in various KVs (RPM per volt). So, 24 volts is no biggie.

Kim,

I pull 5kw through my recumbent on a regular basis. Remember, you have gears to shift, I don't. So, you sould be able to get away with less amps for accelleration. :wink:

As for torque, my recumbent is geared for 42mph top speed. Even so, I pull myself, and my two kids in the Burley trailer. That is 400 pounds total. I pull them up hill so steep I cannot pedal up. Also, I do not pedal first. I just motor away. The HV110 starts up just fine.

Do you need a two stage or one stage drive?

Yes, I take PayPal.

Matt

 

[boostjuice]

Hi Matt,
If its not too much trouble could you please take photo's of each completed drive ordered before shipping it off. We'd really like to see how a range of different sized pulley's and sprockets look when attached. It would give us a feel for the shape/dimensions of different reductions and customizations.

Cheers

 

[AussieJester]

Do you need a two stage or one stage drive?

Yes, I take PayPal.

Matt

KK cheers for that info... i have no idea what i need, I assumed the single
stage that was the picture i saw i'm sure?
i'll have to sit down tonight and look back through the thread see if i can
find what i need to know if not....well i might follow gogo's lead and waiting
to see a few people set them up to get a better idea of it all...I find i follow
things better that way Matt remember im not too bright mate but can lift heavy weights LoL

Seeing there is over 30 pages to cypher through :S I would look at editing the first post on page
one and popping in pics and specs of the drive units their ratios etc etc etc so those
interested in buying the units dont have to sit down for 2 hours and read 30 pages
of information....they can see whats available straight up, would make the whole process alot easier i think?
Might get them drives 'walking' out the door a lil quicker to maybe?

Anywayz...shall get back to you either way Matt...

Kim

 

[Diamondback]

Good lord $AU1310 for a 24v Lifepo4 setup? is it encased in gold or something LoL
What supplier was this from, must be some quality gear for that coin...

The suppler was cyclone-tw.com

It's a pack with PSI cylindrical 10C cells.
24V 20A with 75A BMS.
Came with a bag and 8A charger

Inc shipping it cost $878 US. At the time it was $1310 au

So far I am very impressed with the performance of the pack.
I looked all round oz at the time & could not find a better deal.
I tried everywhere Inc the thundersky cells.

Only thing that got close was buying the cylindrical cells from
EV power and building the pack myself. That would have been $900
And only with an 15A BMS (not nearly sufficient) and no charger either.

So the cyclone pack was good value (Imo)

Jason.

 

[GGoodrum]

Matt --

If you didn't count both of the ones I need, you can add one more to the total. I need one for the Hacker, and one for the NM 2215/P62 combo.

Eventually, I will need a couple more as well, but not before I get both of these going.

-- Gary

 

[skydog]

Matt:
I would like a single stage, I believe. No anodizing, standard gears are fine. I just have to determine what motor I want and dimensions of the overall system. I'd like to fit it in a cavity at the front of the suspended rear triangle (tight) and use the existing chain.

Does anyone have any ideas how much wrap the chain needs around an inline sprocket to provide reliable traction?

I'll PM you soon.

Rob

 

[Miles]

Does anyone have any ideas how much wrap the chain needs around an inline sprocket to provide reliable traction?

120 degrees. If you maintain the optimum chain length, you'll be ok with 90 degrees.

 

[spike]

Wow, quiet lately!

----Insert cricket sounds here----

Only 5 of the first 12 are spoken for so far.

Hmm, I'm glad I didn't make more than 12 to start with.

Who else wants one?

Matt

I will want one. I just don't have enough RC/MechEng knowledge to know exactly what I want yet. I'll be watching what the early adopters do with theirs and copying. I also have to justify the time and cost to my wife. We have a newborn baby girl and apparently she gets priority. :? What is the world coming to :lol:

 

[recumpence]

OK, ood deal.

Here is what I will do........

I will begin setting up as much at the shop as I can (cutting bearing tubes to length, pressing bearings in, boring sprockets and pulleys out, etc). That way once each person decides on what they want, I can get each drive together quicker.

Gary, shoot me out your motors and I can get to work on your drives right away.

I think I may get innundated with orders once the first few get installed and running. :wink:

Matt

 

[etard]

I want to buy one Matt, but like the others, I was hoping that you would have one setup on a bike so that we could see the final product, or at least a bench test youtube video. I agree with Safe, the economy sucks, and the timing right after Christmas leaves very little extra cash flow at the moment. Give me a month and I will be ready to buy one gold anodized.

On a side note, I went to the AMA expo in Ontario, CA yesterday and got to chat with Lucien, a rep for Scorpion motors and ESC's. They had the new SHV controllers on display. He said the price of the 70 volt 150 amp model is going to be about $350, and you can go up from there. They will be available June/July. I think these are going to be a cheaper alternative to the Castle SHV Controllers, which were not on display. Also, I got to see the Align guys flying their Helis in this small room, now I understand the amps these choppers pull.

 

[deecanio]

oooh gold bling, dont they look nice? 8) what are the models/outputs of the motors?

Matt,

once we get our drives and start posting footage im sure you'll be ok for work btw, thx for doing the extra work on mine, i wasn't expecting you to get round to it until the initial hubub had died down
what did you want to do about the eno? - i want to order one for my cranks so do i order you one to replace or i can pay you in my final drive bill? let me know,also is the anodising available?

cant wait to get mine

Cheers,

D

 

[recumpence]

Hmm, well, the ENO22 tooth freewheels have gone up in price. I do not mind if you pay me for mine. Or you can send me one. If you are orderng one anyway, you could have it drop shipped to me for modification or replacement of mine. I already shaved the teeth off mine the other day. It was a pain, let me tell you! It took nearly an hour partly because I had to figure out how to do it. I broke a carbide end mill on it. What I finally ended up doing was holding it to my bench top belt sander/grinder and grinding the teeth off. Then I spun it at 7,000 RPM on the lathe and held 100 grit sandpaper to it to shine up the edge. It looks like a production part that way.

Anyway, it will be about 2 to 3 hours of work to get the FW into the 60 tooth pulley. But, it is doable, that's for sure.

Yes, anodizing should be fine. However, bear in mind, the pulleys will not be anodized. They start life as standard pulleys that are extensively modified. The original pulley itself has a clear coating on it. So, the pulleys will remain silver aluminum.

Oh, I also learned how to mod the FW adaptors for a more flush mouning. When I designed the drive, it looked like it would be 4 inches wide. Well, the FW adaptors and pulleys ended up wider than I thought. So, that brought the width up to 5 inches! With some minor modifications, I have been able to get that under 4 and 1/2 inches. My recumbent has well over 5 inches between crank arms. My mountain bike has 4.75 inches between arms. I am trying to get the drive down to 4 inches. But, I know it will be a touch under 4 and 1/2 inches for sure.

Matt

 

[deecanio]

Hi Matt,

Sounds good, good job on the width, that was a concern.
Ok if the price on the ENO is up i'll send you one if that's ok? for some reason my paypal account always plays up so it will be easier for me to buy one and have it posted, can you pm me your address and i'll get the eno's bought tonight - one to me and one to you.

Can i ask you how you plan to mount your chainring to the eno for the freewheel crank setup?
i think i'll have something made as i want to use my Gates's 4 boly pattern,4 bolt 42t chainring and 4 bolt 42t bashring also im hoping - i plan on attaching the bashring to the crank which is why i've gone for the echo SL crank with its holes in the arm, the hope is to bolt the bashring to the crankarm itself and this will give me some prtection from the spinning chainring.

Ok for the anodising just a black body then please Matt, i'm just waiting to see what Gary's opinion is on the hacker and then we should be good to go - what sort of timescale are we looking at for the anodising and the eno mod? if your happy i'll settle up in full now?


Cheers Matt, there will be some awesome ebikes around this year for sure 8)


Cheers,


D

 

[etard]

Can somebody tell me why we have to have the ENO 22 tooth freewheel? I have found a 17 tooth ENO for much cheaper, should I grab it? Can I put a 22 tooth cog on it?

Damn, those things are expensive

 

[Miles]

Can somebody tell me why we have to have the ENO 22 tooth freewheel? I have found a 17 tooth ENO for much cheaper, should I grab it? Can I put a 22 tooth cog on it?

The advantage of the 22t version is that it has circumferentially milled slots to lighten it - these are very convenient for fixing to it with bolts. Other sizes can only be bolted in between the teeth, unless they are drilled...

 

[nomad85]

Then why are they grinding off the teeth?