1984 Honda Elite CH125

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FbGFxVQhO6UHmBZQU   100 µW

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Joined: Jun 02 2021 10:13am

1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Jun 03 2021 9:54pm

Hi. I'm hoping to change the old scooter to an electric. It is not easy to get a street legal e-scooter in my state so I hope retrofitting will work out. I'll update what is going on as it goes on.
84-elite-125.JPG
original scooter
84-elite-125.JPG (1.83 MiB) Viewed 747 times
Really appreciate any advice too.

I hope to be able to reach 55mph in a pinch, so I've asked about 72V QS MOTOR.

I just got a quote for a motor and battery and parts. Does it look good?

Code: Select all

1pcsx QS V4 10inch 3000w drum motor wheel
1pcsx 72V150A sabvoton controller
1pcsx bluetooth adapter
1pcsx throttle with switch
1pcsx 12V dc-dc converter
1pcsx CT-22 hall display
1pcsx Alarm
1pcsx 72V10A charger
1pcsx 72V50Ah lithium battery (410x150x153mm)

These are parts preview.

Battery
battery.jpg
72v battery 50ah
battery.jpg (30.17 KiB) Viewed 747 times
controller
sabcontroller.jpg
controller
sabcontroller.jpg (57.54 KiB) Viewed 747 times
display
display.jpg
display
display.jpg (59.11 KiB) Viewed 747 times
12 step down
12stepdown.jpg
12 stepper
12stepdown.jpg (10.88 KiB) Viewed 747 times
QS
qsmotor.png
qs motor
qsmotor.png (181.15 KiB) Viewed 747 times

FbGFxVQhO6UHmBZQU   100 µW

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Joined: Jun 02 2021 10:13am

Re: 1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Jun 09 2021 5:37pm

I got another estimate with a different battery size.

Code: Select all

1pcsx 72v QS V4 10inch drum brake motor wheel 100Kph possible speed
1pcsx 72V150A controller
1pcsx bluetooth adapter
1pcsx throttle with switch
1pcsx 12V dc-dc converter
1pcsx display for speed and battery charge
1pcsx Alarm (optional)
1pcsx 72V charger (USA Plug)
1pcsx 72V50Ah lithium battery (220x170x320mm)
I made a template and I think this battery size can work. What do u think?
Template 220x170x320 top
IMG_0077.JPG
battery template top view
IMG_0077.JPG (3.94 MiB) Viewed 660 times
I'm sure I can grind down the frame some and make a nice box in there for this size battery to slide in and rest an inch or two above the frame into the former gas tank space.

Template 220x170x320 side
IMG_0075.JPG
battery template
IMG_0075.JPG (3.83 MiB) Viewed 660 times
My idea is to bolt this Suzuki swing arm in there just above the parking stand. Is anything wrong with having the swingarm pivot a little lower than the rear axle? It looks like that is what will be the result.

kreal   1 W

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Re: 1984 Honda Elite CH125

Post by kreal » Jun 10 2021 7:56am

FbGFxVQhO6UHmBZQU wrote:
Jun 09 2021 5:37pm
My idea is to bolt this Suzuki swing arm in there just above the parking stand. Is anything wrong with having the swingarm pivot a little lower than the rear axle? It looks like that is what will be the result.
If I understand correctly, then it shouldn't be a problem. You'll see this on most motocross bikes also.
Screenshot 2021-06-10 at 19.57.47.png
Screenshot 2021-06-10 at 19.57.47.png (167.2 KiB) Viewed 640 times

FbGFxVQhO6UHmBZQU   100 µW

100 µW
Posts: 9
Joined: Jun 02 2021 10:13am

Re: 1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Jun 10 2021 8:41pm

kreal wrote:
Jun 10 2021 7:56am
If I understand correctly, then it shouldn't be a problem. You'll see this on most motocross bikes also.
thank you for advice. i think this low rider is really more like the case I will end up with.
lowriderpivotbelowrearaxe.png
lowriderpivotbelowrearaxe.png (314.46 KiB) Viewed 617 times
the pivot will be lower than wheel axle. but surely not that much lower. it is very encouraging.

FbGFxVQhO6UHmBZQU   100 µW

100 µW
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Re: 1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Jul 28 2021 6:57pm

Got to sizing up the swing arm in the low-rider position. Still could try it up in the original spot where Honda had the motor mount. If this ends up the location, should like to get a real space welded in on the sides and maybe the center.
IMG_0081_resized.JPG
Washers are just for spacing for now.
IMG_0081_resized.JPG (331.06 KiB) Viewed 452 times
IMG_0082_resized.JPG
grinded the kickstand mount a little more to make the bolt and nut fit.
IMG_0082_resized.JPG (344.3 KiB) Viewed 452 times
IMG_0084_resized.JPG
The bolt is available on ebay. it is something to do with Audii suspension. Size M14 x 1.5 x 265mm
IMG_0084_resized.JPG (294.81 KiB) Viewed 452 times
IMG_0085_resized.JPG
It is a little wiggly. will need something welded in to stabilize it.
IMG_0085_resized.JPG (336.96 KiB) Viewed 452 times
I would wish to find a solid bolt with thread only at the end though. If u know any link to such bolt please share.

Elektrosherpa   100 W

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Re: 1984 Honda Elite CH125

Post by Elektrosherpa » Jul 29 2021 4:47am

FbGFxVQhO6UHmBZQU wrote:
Jul 28 2021 6:57pm
I would wish to find a solid bolt with thread only at the end though. If u know any link to such bolt please share.
If I would need such a special part, I would go to a locksmith/lathing workshop and ask them to custom make one.
My favourite workshop usually wants for such simple things just "a few Euros for the tip money box"...

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JimVonBaden   100 W

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Re: 1984 Honda Elite CH125

Post by JimVonBaden » Jul 30 2021 3:22pm

Check out my build. It is basically the same on my Vespa, and I can do 62mph.

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MJSfoto1956   10 kW

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Location: Boston, MA

Re: 1984 Honda Elite CH125

Post by MJSfoto1956 » Jul 30 2021 3:56pm

And then there is my (rather long) build from two years ago where one thing led to another and I ended up with my much-loved “Elektra”. You can definitely learn from my mistakes along the way. https://endless-sphere.com/forums/view ... 14&t=98446

P.S. my front forks were derived from a Honda CH250!!
Attachments
2BB19D73-F129-453C-986E-4BEA6B1F2957.jpeg
2BB19D73-F129-453C-986E-4BEA6B1F2957.jpeg (934.61 KiB) Viewed 378 times
Bois and their fancy tacticool ain't cool -- it's a pathetic circle jerk

QANON is a sick cult: https://www.rollingstone.com/culture/cu ... e-1064076/

FbGFxVQhO6UHmBZQU   100 µW

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Joined: Jun 02 2021 10:13am

Re: 1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Sep 08 2021 6:57pm

Some parts arrived today.
Motor and controller with some gadgets.
IMG_0098.JPG
motor
IMG_0098.JPG (249.85 KiB) Viewed 195 times
I bought some 45 degree valve stem, but seems not useful for this wheel. What valve stem has worked for you
IMG_0097.JPG
speedometer, handles, controller, volt converter and some doodads.
IMG_0097.JPG (352.48 KiB) Viewed 195 times
Looks like this is the controller: https://www.far-driver.com/nd72530black-blue/

I guess I need some wire connection extenders and maybe some converting connectors.

Any advice on setting up?

SlowCo   1 MW

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Location: The Netherlands

Re: 1984 Honda Elite CH125

Post by SlowCo » Sep 09 2021 4:19am

Nice project :thumb:
I will be following your progress. Enjoy building!

Elektrosherpa   100 W

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Re: 1984 Honda Elite CH125

Post by Elektrosherpa » Sep 09 2021 5:03am

FbGFxVQhO6UHmBZQU wrote:
Sep 08 2021 6:57pm
Some parts arrived today.
...
Any advice on setting up?
Display and Handles look like what I have got from QS.
Seems like the wiring plan of the display provided by QS (if any...) is wrong.
(see my build thread for correct cable color apportions)

The display I got has a huge hole on the back side.
I closed it with a piece of rubber, to avoid a fish tank inside :P

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Dui, ni shuo de dui   10 kW

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Re: 1984 Honda Elite CH125

Post by Dui, ni shuo de dui » Sep 10 2021 1:07am

That's some cool stuff you just received. You will reach your objectives with this hardware, but you'll need a good battery capable of reliably delivering all this current. Make sure your supplier knows that the battery needs to output at the very least 150Amps continuous. You need cells with low internal resitance/high C-rating.

Sorry if I'm being harsh, but cant' you find a better base for your build? It doesn't look like a very good frame, plus I don't think you have any brake disc at the front wheel (you definitely want one if you are to reach 55mph), and, at least to me, the looks of the fairings is just absolutely horrific (but I guess everyone has different taste).

It is difficult to find some cheap moped from the scrapyard where you live?
:bolt: New Build in Progress: Electric Roadster, 30 000W Kelly KLS72701, 24S2P A123 cells :bolt:
viewtopic.php?f=12&t=109246

:bolt: My electric Ninja 250 clone: 16 000W Sabvoton 72200, 23S2P A123 cells : :bolt:
viewtopic.php?f=12&t=90032

:bolt: My electric Scooter: 11 000W Sabvoton 72150, 72V 50Ah LiFePO4 cells: :bolt:
viewtopic.php?f=12&t=75912

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JimVonBaden   100 W

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Re: 1984 Honda Elite CH125

Post by JimVonBaden » Sep 11 2021 5:33pm

I have the same throttle and grip. My advise is to remove the brushed metal parts. They easily distort and are very uncomfortable.

See the left one:
Image

Now:
Image

Looks better too.

FbGFxVQhO6UHmBZQU   100 µW

100 µW
Posts: 9
Joined: Jun 02 2021 10:13am

Re: 1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Sep 13 2021 8:38pm

Dui, ni shuo de dui wrote:
Sep 10 2021 1:07am
That's some cool stuff you just received. You will reach your objectives with this hardware, but you'll need a good battery capable of reliably delivering all this current. Make sure your supplier knows that the battery needs to output at the very least 150Amps continuous. You need cells with low internal resitance/high C-rating.

Sorry if I'm being harsh, but cant' you find a better base for your build? It doesn't look like a very good frame, plus I don't think you have any brake disc at the front wheel (you definitely want one if you are to reach 55mph), and, at least to me, the looks of the fairings is just absolutely horrific (but I guess everyone has different taste).

It is difficult to find some cheap moped from the scrapyard where you live?
Thanks for inspiration and concerns. I ordered a 72v battery. Without any experience in this it just seemed like it should hit 50-55 in a pinch according to some charts I saw on the sales pitch sites. I likely won't ever go that fast for any long time.

The seller from Alibaba also tried to help me go disk brake, but I was set on keeping drum for the classic ride feel.

Might been able to find some other things, but I had this one around for 8 or 9 years, just getting wasted in the sun. It is actually like the first motorcycle i had around 1986. So this has nostalgic value.

After that, it is really just a test case, to see if I can make it work. I'd like to make a bigger chopper in the future.

Above all those ideas however is the fact it is very difficult to find a street legal electric for low cost in this state. They have a limited list of motorcycle manufacturers that are allowed to go over 25mph. Since this is a legal bike, it was a good fit to try transforming.

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Dui, ni shuo de dui   10 kW

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Re: 1984 Honda Elite CH125

Post by Dui, ni shuo de dui » Sep 13 2021 10:53pm

JimVonBaden wrote:
Sep 11 2021 5:33pm
I have the same throttle and grip. My advise is to remove the brushed metal parts. They easily distort and are very uncomfortable.
...and my advice is to throw it away as soon as you can! :lol:
That is if you plan on running your bike under heavy rain at some point. Water does get in and I had a few big scares because of that, either the throttle was not working anymore so I came to a dead stop in the middle of nowhere, or, much much worse, the throttle suddently goes full speed when you expect it the least. Happened to me when I was waiting at a red light, it almost threw me under a truck...

I really recommend you guys to go for cable throttles, they are better in every possible way.

@OP, I understand the sentimental value of this scooter to you, no problem, go for it then!
(but you really, really should give a second thought about the brakes, braking hard is part of the fun of having a powerful machine, not even mentioning basic safety) :wink:
:bolt: New Build in Progress: Electric Roadster, 30 000W Kelly KLS72701, 24S2P A123 cells :bolt:
viewtopic.php?f=12&t=109246

:bolt: My electric Ninja 250 clone: 16 000W Sabvoton 72200, 23S2P A123 cells : :bolt:
viewtopic.php?f=12&t=90032

:bolt: My electric Scooter: 11 000W Sabvoton 72150, 72V 50Ah LiFePO4 cells: :bolt:
viewtopic.php?f=12&t=75912

FbGFxVQhO6UHmBZQU   100 µW

100 µW
Posts: 9
Joined: Jun 02 2021 10:13am

Re: 1984 Honda Elite CH125

Post by FbGFxVQhO6UHmBZQU » Sep 14 2021 8:16pm

I've tried to think through the Fardriver controller and other wiring. The diagram was little helpful but some things are not so clear until I get the battery. Anyway, i have some basic idea with some hints from google translate.

This one was rather easy. I think I can send a yellow 12v wire to the original ignition and from there to the controller.
voltage converter 1200.png
red 72v, black ground, yellow 12v
voltage converter 1200.png (1.62 MiB) Viewed 40 times
Small display has a 6 wire output and my assumptions for their operation:
  • Red: 12v in
  • Blue headlight: but we will use that for high beam indicator since we need headlight on all times in this state.
  • Orange: connect to left turn signal hot wire.
display wires 2.JPG
red 12v in, blue headlight, orange left turn.
display wires 2.JPG (984.06 KiB) Viewed 40 times

Other three display wires:
  • Black: ground
  • Black & White: speed display
  • Lan comes up Chinese for Orchid in Google. Assuming this is the purple wire for the right turn signal.
display wires.jpg
display connector, black, black & white, Purple
display wires.jpg (834.9 KiB) Viewed 40 times

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