High power RC motor and drive unit production

[GGoodrum]

Awesome! I can't wait to get my hands of it.

I agree with David, that pulley looks great. I amazed you were able to get that much material out of it.

-- Gary

 

[deecanio]

Hi All,

been busy at the weekend cleaning the stinky which is now home and in my spare bedroom (workshop).
What can you say? absolutely awesome work Matt, that single stage looks the dogs ganglies :lol:
can't wait to see what magic you come up with to sit in my eno but i'm assured looking at gary's drive it will be fantastic too.
Many thanks for helping us all out with the drive Matt, your name is destined for my bike along with the others who've really helped.
My bike is nearing a point where i can complete, just a few more parts to order then we're good to build.
looking forward to getting my grubby hands on my drive, fingers crossed it will go just where i want it 8) massive amount of snow here in the UK at the moment, i say massive, 6-7" which is rare indeed for us - 60 million population in the uk - yesterday 6 million called in sick, lol :lol: honestly the canadians would wet themselves if they knew how badly our country grinds to a halt with just a little snow, 4 years ago i spent a month in Montreal - trains ran just fine whatever the weather - in the UK yesterday just one tube line operating - go figure.


Cheers<

D

 

[northernmike]

We got studded tires over here, eh? We even build Condos in the snow. The condo I'm working at pours concrete in weather like you're talking about!

It IS a pain doing electrical in -30, though, insulation gets pretty hard....

BTW thanks Matt for the FW adapters - $ is in the (e)mail.

You sir need a brand name, and stickers, so the Moby and I can advertise for you. :lol:

 

[GGoodrum]

Matt's drive showed up today, and all I can say is WOW! This is one fine piece of kit! Now, if I could just get my 321o, I'd be set. I think in the meantime, I may temporarily mount my Hacker A60 on it, so I can put on the belt, the FW adapter and my 12T cog, and take some pics. I'll post them a bit later.

-- Gary

 

[recumpence]

Cool!

Remember, for right side drive, you will need to remove the FW adaptor, thread it into the FW (insert the hub side of the FW adaptor into the FW first), then remount the FW adaptor and FW assembly onto the jackshaft.

You may want to use blue loctite on the set screws just to make sure.

Matt

 

[GGoodrum]

Cool!

Remember, for right side drive, you will need to remove the FW adaptor, thread it into the FW (insert the hub side of the FW adaptor into the FW first), then remount the FW adaptor and FW assembly onto the jackshaft.

You may want to use blue loctite on the set screws just to make sure.

Matt

Thanks, will do. I'll post some pics tonight.

I just placed the whole assembly in the area behind the seat post on my 16" folding bike, and it fits like a glove. I have a way to easily mount this, I think, which means I can probably get the Hacker setup on this bike going sooner than later. I need to get that 2nd unit "in the queue". I want the same exact setup, with the 70T/17T pulleys, and the freewheel adapter. The motor slot spacing needs to come in a bit (I'll send you that...), but even the current one for the 3210 will fit for two of the four motor screws.

-- Gary

 

[voicecoils]

Matt's drive showed up today, and all I can say is WOW! This is one fine piece of kit! Now, if I could just get my 321o, I'd be set. I think in the meantime, I may temporarily mount my Hacker A60 on it, so I can put on the belt, the FW adapter and my 12T cog, and take some pics. I'll post them a bit later.

-- Gary

Good stuff. Pics ASAP required

Can you place it temporarily where you plan to have it on the bike so we can visualize how it will fit into the overall scheme?

 

[recumpence]

Cool.

You only need two screws anyway. No problem.

I have more drives on-hand to be setup. Just let me know.

The only parts I do not have ready are 70 tooth pulleys. I jsut ordered more today. They will be machined when they arrive.

Matt

 

[GGoodrum]

Matt's drive showed up today, and all I can say is WOW! This is one fine piece of kit! Now, if I could just get my 321o, I'd be set. I think in the meantime, I may temporarily mount my Hacker A60 on it, so I can put on the belt, the FW adapter and my 12T cog, and take some pics. I'll post them a bit later.

-- Gary

Good stuff. Pics ASAP required

Can you place it temporarily where you plan to have it on the bike so we can visualize how it will fit into the overall scheme?

Yes, first up will be pics of the planned installation on the folding bike. I can't get to the Townie until tomorrow.

 

[GGoodrum]

Cool.

You only need two screws anyway. No problem.

I have more drives on-hand to be setup. Just let me know.

The only parts I do not have ready are 70 tooth pulleys. I jsut ordered more today. They will be machined when they arrive.

Matt

Great. I'll measure the motor hole spacing and get that to you. Same amount? Just send me another PayPal payment request.

Thanks -- Gary

 

[1000w]

Hey Matt,
Awesome work with the drive.
I have just read the 44 pages of this thread and I think I read you can get custom pulleys.
I want to drive my Cyclone 1000w directly to my 3 speed hub in the rear wheel using a 5mm pitch belt like you use in your drive.
I currently do this with a 8mm pitch chain using a 11 tooth motor sprocket to a 80 tooth rear. (7.2 to 1) ratio.
After going through the pulley catalogs it seems the smallest pulley I can run is a 20 tooth because the motor has a 12mm shaft and a 10 tooth is too small for this shaft.
To get the reduction required, I need a 150 tooth on the rear. Are these available stock?
Do you / can you make custom belt pulleys?
I hope this is not too off topic.
Cheers,
Matt.P.

 

[Miles]

Matt P.

For a pulley that diameter, you could possibly get away without having teeth... It would make a custom/diy pulley much easier to fabricate. I'm planning to use a toothless large pulley on my next build.

 

[sockman]

Cool.
I have more drives on-hand to be setup. Just let me know.
Matt

waiting patiently

 

[gwhy!]

I hope Matt dont mind to much but I have sort of copied his drive design :wink: It don't look quite as pretty as Matt's drive but hopefully will be just as functional.

 

[recumpence]

Sockman,

Did you want a drive, or are you eagerly awaiting everyone else recieving theirs?

Gwhy,

Immitation is the sincerest form of flattery.

Gary,

Do you want 1, 2, or 3 more drives?

Matt

 

[recumpence]

Matt P.

I buy plain pulleys from a couple sources, then machine them to my finished spec. The largerst pulley I can get easily to be modded is (I think) 80 tooth.

I agree with Miles, you could run a smooth pulley at that diameter easily enough.

Matt

 

[sockman]

matt,
i'm the 12mm 5:1 reduction fr singapore...
russell aka sockman

Sockman,

Did you want a drive, or are you eagerly awaiting everyone else recieving theirs?

Gwhy,

Immitation is the sincerest form of flattery.

Gary,

Do you want 1, 2, or 3 more drives?

Matt

 

[GGoodrum]

Matt, I need one more now, and then two more after I get these two tested.

I heard back from AF, and I won't get my 3210 until Monday. Bob is running some tests first. I believe this might be the first 10-turn 3210 they've done. Anyway, I gathered getting more built won't take so long, once this first one is done.

Here's a couple shots of the drive with the Hacker set in it. The motor holes, which were done for the 3210 bolt pattern, are close, but not close enough to use them with the Hacker. I just used the pulley to hold it on, plus a spacer to put some tension on the belt.

I'll try and get some shots with this assembly set on both bikes this weekend. I couldn't hold the bike up, the assembly and take a picture. One thing I did notice, however, is that I thik I need the output shaft to be about 3/4-1" longer, for the drive assembly to be centered on the frame and have the drive cog line up with the crank.

-- Gary

 

[Ypedal]

I like it !!!

What model Hacker is that Gary ?

I'm about to pull the tricker on an 3210 from astroflight.com unless there are better places to buy ?

 

[etard]

Gary,
Am I correct in noting there is no freewheel on this part of the drive? I can't wait to see that in action, By the way, I just bought a Hacker A60-20S off rcgroups brand new for $100. Is it possible to rewind this motor to be the 24S version (195kv instead of 245kv)easily, or should I use it in it's current guise?

Matt,
If you run a smooth large pulley, do you still use a toothed small pulley and belt? Have you tried this before?

 

[Miles]

If you run a smooth large pulley, do you still use a toothed small pulley and belt?

Yes.

 

[deecanio]

Hi All,

Gary, if you get chance, and only if you get chance, would you take some flat side-on shots, with a rule or something in shot?
Nothing to play with yet see some sizes would be really useful to get an idea.

Y, i think the hacker is an A60-18L ?? Gary has written it somewhere in the other threads, maybe freewheel resources.

the drive looks super Gary 8) can't wait to get mine

Cheers,

D

 

[MitchJi]

http://www.hackerbrushless.com/motorDetails.aspx?series=A60

Specifications-------RPM/V-------Weight
A60-18L -----------149---------910g (31.9oz)

 

[GGoodrum]

I like it !!!

What model Hacker is that Gary ?

I'm about to pull the tricker on an 3210 from astroflight.com unless there are better places to buy ?

It is a Hacker A60-18L. It has a kV of 149. It should work fine in for the folding bike setup I'm doing, which won't require as much power as what I need for the Townie, where the latter is heavier to begin with, must get me up much bigger hills and must go faster to keep up with traffic occasionally. the folders I mainly use down in San Diego, which is pretty flat, where we are (Mission Bay...).

I'd wait on the 3210 for a week. By then I should have mine going and have some real data. If it turns out the 3210s work as well as I think they will, I'm going to try and get a good deal on 10 of them.

Gary,
Am I correct in noting there is no freewheel on this part of the drive? I can't wait to see that in action, By the way, I just bought a Hacker A60-20S off rcgroups brand new for $100. Is it possible to rewind this motor to be the 24S version (195kv instead of 245kv)easily, or should I use it in it's current guise?

Initially, at least, I'm not going to worry about a freewheel for the motor, especially for the Hacker which has very little cogging. I want to verify some performance numbers first, using readily-available sprockets and pulleys. I'm using 70T/17T for the pulleys, the 12T track cog driving a 53T chainring on the crank, a 36T second chainring driving a 7-speed cassette in back that ranges from 14-34T. In first gear that gives a total reduction to the wheel of about 17.2:1. That will give a WOT speed in 1st of about 26 mph, using the 3210-10 (kV: 135...) at 50V. That should be plenty of torque for what I need, which is just getting up any of the good size hills around here (10-15%, I'd guess...). By comparison, D's WOT speed in 1st, using the same motor, but different gearing, is only 16 mph, with 20" wheels. He will have more than enough torque to start breaking things on a "normal" setup.

-- Gary

 

[HAL9000v2.0]

Matt P.

For a pulley that diameter, you could possibly get away without having teeth... It would make a custom/diy pulley much easier to fabricate. I'm planning to use a toothless large pulley on my next build.

That is a great idea ...cheaper to build smooth one but then you have to use AT belt instead of HTD...


recumpence: The drive looks great... 8)