AnsweredHot!E-Conversion of my Bacchetta Corsa, Aluminum 650C

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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2018/05/06 09:12:24 (permalink)
Excellent response, HoahVale!  Thank you.  I'm heading out to the garage now to tear into the Corsa.  I will probably start the order this afternoon.
 
Last questions:
 
1.  Why did you NOT use the stock torque arm (dimpled plate) that came with the kit?
 
2.  is it possible to fabricate my own torque arm if the motor were positioned below the BB, i.e., would those two attaching holes be accessible when rotated?
 
3.  What is the thickness of your custom SS torque arm?
 
Looking forward to hearing about your "longer ride this morning."
 
Another big thank you,
 
Denny G.

Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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noahvale
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2018/05/06 10:43:52 (permalink)
giaruso
1.  Why did you NOT use the stock torque arm (dimpled plate) that came with the kit?
It seemed like a good idea for keeping the motor secure. 
2.  is it possible to fabricate my own torque arm if the motor were positioned below the BB, i.e., would those two attaching holes be accessible when rotated?
Probably not, the holes would be at the top. You need to make sure you can rotate the motor, it all depends on the frame.
3.  What is the thickness of your custom SS torque arm?
 Very thin, maybe 1/6".
Looking forward to hearing about your "longer ride this morning."
 Just got back from a 40 mile ride. On level 2 assist pedaling a cadence of 90 at an average of 23 mph the battery lasted 35 miles. Ran at level 5 for a bit, but would spin out at 25+ mph. It was like riding with a flat tire when the battery ran out. I am looking forward to putting bigger tires on it.


 
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2018/05/06 17:23:26 (permalink)
Thanks again.  All ordered, and email that items were shipped already.  I got the 44T sprocket, 48V battery, shift/gear sensors, hydraulic brake sensors, and color computer (I missed the free upgrade).  I will see about making a custom bracket to reposition the motor under the frame.  That 48V battery is much lower profile than the 52 and I'm sure it will install the same as yours--plenty of room.
 
Keep in touch,
 
Denny G.

Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2018/05/26 13:37:39 (permalink) ☄ Helpfulby Dr. Love 2020/09/13 17:40:45
Done!  
The e-assist kit is installed:  BAFANG 750W motor with 48V battery.  The chain ring is 44T.  The installation includes the "hydraulic" brake sensors, the shift/gear sensor, electric and speedometer extension cables, and color display.  The battery support bracket I designed and built (Bacchetta has a rear bike rack for $60).  The installation took me several days on and off since just about everything had to be replaced except the wheels and the frame.  The Corsa was in storage for seven years in favor of my CA 2.0.  The photo here should provide a good view of the installation.  Without weighing, my guess is the bike is now between 50 - 55 pounds.
 
The functionality of the BAFANG system is incredible:  Smooth, intelligent, and powerful!  I use e-assist mainly to push me up hills.  Pedaling with power off feels the same as it did pre-conversion.  The crank free-wheels when it is coasting.  I've only accumulated 80 miles of riding on the Corsa since e-conversion, using only 32% of the first battery charge.  I love it!

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Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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jeffssmith1
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2019/02/10 14:18:27 (permalink) ☼ Best Answerby giaruso 2019/02/11 13:36:21
Are you still enjoying your e-Corsa? Any problems encountered?

Jeff Smith
2006 Corsa - Colorado
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Doc Dan
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2019/02/10 18:35:45 (permalink)
I'm just gobsmack impressed with what you guys are doing.  Admiration.  Impressive.
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2019/02/11 13:52:06 (permalink)
Jeff Smith,
 
Thanks for asking.  My e-assist conversion is working perfectly.  Oh, I had to make a few modifications here and there, but the Bacchetta Corsa roles like a Bentley with all the power I would need for the hills, grades, and distances I ride here in southern California.  I went from a 44T crank gear to a 48 tooth, modified the battery support bracket a couple times to avoid support mount breakage due to road vibrations, and added a bracket to the Bafang motor to avoid anti-rotation and to keep the motor tucked in the downward position.  See photo attached on the bracket design.
 
Dennis M. Giaruso

 
 
 
 
 

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Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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jeffssmith1
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2019/02/11 14:07:46 (permalink)
Beautiful handiwork, Dennis. I have a long commute (1:45) and have been pondering an e-assist.

Jeff Smith
2006 Corsa - Colorado
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thosemeggisons
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2019/02/20 06:27:56 (permalink)
Very nice set up Dennis.
Due to a few medical issues, I'm looking into the addition of a THIRD wheel.... AKA, trike.
The whole e-assist market and technology has exploded over the last few years.
I'm exploring a trike with the Shimano STEPS system. Pricey, but good quality and service from a major brand.
Enjoy the extra miles.
 
 

capecodsmoker
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noahvale
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2019/02/23 05:45:21 (permalink)
I moved mine to my Catrike 559. I like it a lot better on the trike. It was fun riding local club rides on the electric Giro. It would fly. The trike is not quite as fast, but it is nice being able to cruise at 25 instead of 12.
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Dr. Love
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/13 17:45:25 (permalink)
Dennis,
Are you still liking it? I am thinking of doing the same on my Giro 20. I was going to go with a rear hub but your setup looks nice. Did you find the additional weight/balance up front to be a problem?
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/15 17:28:07 (permalink)
Hello, Dr. Love.  I am still loving my Bacchetta Corsa with the Bafang e-assist kit upgrade.  I ride it about three-four days a week for about 60 - 80 miles total these days.  The weight balance is totally of no issue with regard to riding properties of the recumbent.  Of course, the bike weighs about 20 - 25 LB more, so the weight is noticeable when mounting for a ride.  The ride itself is incredibly smooth and stable.  If you get the Giro 20, be sure the frame is either steel or aluminum; I have heard that they do NOT recommend the kit for carbon fiber bikes.  Let me know what you decide and how it goes.  If you have further questions, feel free to ask.

Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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Dr. Love
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/15 18:29:49 (permalink)
Thanks for that update. I bought a used 2003 Giro 20. I believe the frame is steel. Although the fork appears to be aluminum.

I am looking at this one:
https://www.bafangusadirect.com/bafang-750w-bbs02-mid-drive-motor-and-battery-p/60.htm?gclid=CjwKCAjwzIH7BRAbEiwAoDxxTvzktFGQ6memcPPsyzeoJob6fHz-GLYw_EdT0AxoU79LTjb1hlIGJRoCg2gQAvD_BwE

Not sure about... Chainring and Chainring Guard Size*:

Is that limited to something already on the bike?
 
 
 
post edited by Dr. Love - 2020/09/15 19:09:05
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/16 15:09:28 (permalink)
Hi, Dr. Love.  That is the exact kit I have, but I went with some additional extras and glad I did.  As follows:
 
Chain Ring:  I ended up with the 48T assembly.  I started with the 44T, not acceptable, and I am a geezer, and I live in a rather hilly area in southern California
 
LCD Display:  DPC - 18 color equivalent.  However, you rarely notice the color, glad I did just the same, I think it has more features than the stock B&W version.
 
Battery:  Standard 48V ultra slim.  Needed it smaller to fit.
 
Charger:  Standard, 48V, 2 amp works out just fine.  NOTE:  When using, plug it in to the 110V first and then into the battery; otherwise, you will get a large flash at the battery.
 
Ebrakes:  Get Bafangs mechanical levers.  I paid extra for the sensors and that was an expensive mistake; because, you have to go out and purchase epoxy and accurately install.  I was lucky, but poorer for nothing.
 
Gear Sensor:  A must; otherwise, the motor will still run while shifting causing all kinds of gear clashing with expected damage.
 
Battery Extension Cable:  Yes, the cable attached to the motor wouldn't reach the battery in the back .  There are two types of extensions now, make sure you get the one that matches your battery bracket cable.  Ask Bafang.
 
Speed Sensor Extension:  Yes, same comment as for the Battery Extension Cable.
 
Locking Wrench:  Get it for the special nut at the bottom bracket.  I didn't and got one from Amazon and it cost me more.
 
It looks as though Bafang has a newly designed battery bracket.  If so, my bracket gave me fits.  I finally got it stabilized, but it took a while.  If you'd like to know what I did, it is covered elsewhere in this forum.  Let me know, if you cannot find it, I can cover that in greater detail later.  For now, get a little tube of electrical grease and keep the contacts between the bracket and the motor coated with it.
 
Again, I would highly recommend getting a stock carrier upon which to mount the battery.  The bracket I made took a while to perfect.  If you do get a stock carrier, you can get the larger 52 volt battery.  Think about it.
 
How are you going to handle the anti-rotation issue at the motor?  If you install the motor rotated down, you will need something to ensure that it stays there; otherwise, if it doesn't, it could tear you wiring out of the motor.  The little dimpled bracket (comes with) that bolts to the motor cannot be trusted to retain the motor in the downward position.
 
You are gonna love this system.  I love mine, totally.

Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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Dr. Love
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/16 15:54:04 (permalink)
Great info.... thanks. This looks doable though I haven't totally abandoned the rear hub concept. This would take me down to one from 3 gears up front... but I may never miss it. Definitely will need to manufactor a brace like you made.
 
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/16 17:17:44 (permalink) ☄ Helpfulby Dr. Love 2020/09/16 17:44:44
If I recall, the rear hub wheels are heavy.  You will have the weight of the rear wheel at the back of the bike with the weight of the battery just above it.  I'd think about this much weight localized in the back may affect the riding characteristics of the bike.  I'd really check around on that one.  On my Bacchetta Corsa's Bafang e-assist system, the weight is distributed evenly front to back and the recumbent rides and handles like a Bentley.  Here is another thing, fixing a flat on the rear of your recumbent, you need three or four hands as it is.  With the additional weight of the hub wheel, I would imagine fixing a rear flat will be much more of a challenge.  Also, to get the power out of a rear wheel hub, I would imagine the hub would be rather large and heavy.  There are several articles on the web you can check out on a hub concept vs a mid-drive application.  Here is but one person's opinion:  https://thejournier.com/2020/04/21/mid-drive-vs-hub-drive-ebike-riding-experience/#:~:text=Hub-drive%20motors%20are%20typically%20limited%20to%20just%207-8,of%20placing%20that%20motor%20in%20another%20compatible%20wheel.  Good luck.

Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
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Dr. Love
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/16 17:41:58 (permalink)
I have only been on a recumbent a time or two and spending an hour on our hilly street has convinced me that the first step is to spend a month or two riding every day and getting comfortable with a recumbent. Day 1 was not pretty... but it has potential. It will not be like riding my electric upright. Starting up hill or down hill presented some challenges. Electric assist may help or initially may magnify my errors!
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giaruso
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/17 14:31:07 (permalink) ☄ Helpfulby Dr. Love 2020/09/17 15:21:46
Well, you are certainly correct about "starting uphill on a recumbent."  I have been riding recumbents for about 15 years now.  On an unpowered recumbent, taking off on a hill at a light is a real science and can be a nightmare.  Where a rider on an upright can push off with one foot and stand on the pedal with the other foot, no problem.  On a recumbent, you cannot really push off with either foot; and you'd better be in a really low gear, and  have a lot of power in the leg on the pedal.  Even then, a recumbent can be very AWKWARD.  I have been known to have put on really good shows for all the traffic at the intersections when I'd fall on my tush.  I finally learned my limits and, at times, I'd simply walk the recumbent across the street until I could find a safe spot to take off from without a performance.
 
Now, on an e-fired recumbent - the "awkward" goes bye-bye!.  All that nonsense goes away.  You simply put both feet on the ground, wait for the the light to turn green, and use the thumb throttle to safely and smoothly push you across the street 'till you darned good and ready to place your feet back onto the pedals.
 
Talking about pedals.  I have been using clip-ins for decades.  On the Bafang e-assist recumbent, I replaced them with ROCKBROS MTB pedals.  I ride through neighborhoods with many stop lights and stop signs.  I am on and off the pedals a lot.  These MTB pedals are excellent, my feet seldom slide off the pedals. See them here:  https://www.amazon.com/RockBros-Lightweight-Mountain-Bicycle-Platform/dp/B07CWRQQGD/ref=sr_1_26?_encoding=UTF8&c=ts&dchild=1&keywords=Bike+Pedals&qid=1600377354&s=outdoor-recreation&sr=1-26&ts_id=3404891
 
Downhill has never been a problem on any of my recumbents.  I simply stay on the brakes until everything else is ready to let me go like hell or to stop.

Denny G.
 
Bacchetta CA 2.0 700c wheels
Bacchetta Corsa, 650c wheels
#38
Dr. Love
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/17 18:46:21 (permalink)
Do you have a template for the battery support bracket and/or do you produce/sell the brackets?
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bentcyclist
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Re: E-Conversion of my Bacchetta Corsa, Aluminum 650C 2020/09/18 07:01:01 (permalink)
Just a vote for a rear hub motor on a Corsa or Giro. I have a 500 watt rear hub motor and use the Bacchetta mounting attachment behind the seat for the battery. I feel absolutely no change in handling of the bike and have been riding Bacchetta’s since 2004. I like mid drive motors, but the fact they create a lot of twisting torque to the boom is something that I’ve thought about. I guess the rear hub motor was so easy to install and has been a mindless add has kept me satisfied. My system was a cheapo purchase online for under $600 including The battery. The system installed in a couple hours and I was on the bike trail. Without any pedaling, I get a tad over 50 mile range at 20 to 25 mph. Buy what you like, but some of the statements made regarding rear hub motors don’t coincide with my experience.
#40
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