BBS02 on Recumbent Tandem Trike! RUNNING WELL!

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BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby RWP » Mon Mar 17, 2014 12:43 pm

I have a friend with a handicapped wife and a TerraTrike Tandem, IPS version [ http://www.terratrike.com/tandem.php ]. They love to ride but my friend is experiencing some issues with his knees and wants an electric assist.

I am thinking about mounting the BBS02 on the machine for them. It's almost 500 pounds for the tandem and two riders. My friend will pedal most of the time just wanting the assist for more strenuous riding. The passenger will assist some but not too much.

Do you think this unit is up to this kind of load? The tandem trike has lots of gears and my friend is a strong rider who will do the steering and powering - he is well versed using the gears and can watch the temp.

Most rides will be generally flat and slightly hilly (2-4% grades), but there are a few steeper grades.

Your thoughts are much appreciated
Last edited by RWP on Fri Apr 18, 2014 5:55 pm, edited 3 times in total. View post history.
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Re: Bafang 750W BBS02 on a Recumbent Tandem Trike?

Postby RWP » Mon Mar 31, 2014 1:44 am

New thread with pics coming soon. BBS02 on tandem trike.
tandem-trike.jpg
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bbs02.jpg
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Re: Bafang 750W BBS02 on a Recumbent Tandem Trike?

Postby neptronix » Mon Mar 31, 2014 2:10 am

It'll be up to the load if you're willing to accept lower speeds and have the correct gearing.

imho 750w does seem like a very meager figure to haul two people with. I would get something much stronger.
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Re: Bafang 750W BBS02 on a Recumbent Tandem Trike?

Postby RWP » Mon Mar 31, 2014 10:00 am

neptronix wrote:I would get something much stronger.
That's our neptronix :mrgreen:
Now you post! How about a week ago when I first posed the question? :roll:

My friend is aware of the load issue and is not a speed freak like some [ viewtopic.php?f=28&t=57025 ] ! He knows what gears are for.
Last edited by RWP on Mon Mar 31, 2014 10:01 am, edited 1 time in total. View post history.
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Re: Bafang 750W BBS02 on a Recumbent Tandem Trike!

Postby neptronix » Mon Mar 31, 2014 11:51 am

Sorry. I didn't see your post earlier :/
ES facebook group: https://www.facebook.com/groups/125035107565566

The all-arounder: 8T MAC motor on a Trek 4500.
The new all-arounder: Bafang BBS02 on a Turner O2 full suspension.
The wheelie machine: 20" Rear Magic Pie II on a Trek 4300 MTB
The Bus: ??? on a 'da bomb' cargo bike frame

Pro-tips for noobs: Charge RC Lipos to 4.15v, stop discharging at 3.5-3.6v | Use torque plates/arms! | Rear mounted hubs are always best
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BBS02 on a Recumbent Tandem Trike! RUNNING WELL!

Postby RWP » Fri Apr 18, 2014 12:21 pm

The BBS02 mounted in a TerraTrike Tandem Pro. What a machine! Runs great - has done a 10 mile and 18 mile outing and all is well. Motor gets warm but not hot. GPS says 30mph - in high gear and pedaling!

Had to extend the wiring harness and speed sensor because the tandem trike has a different configuration from a regular bicycle. The increased distance between the brake levers and the mounting location of the display required some surgery to the wiring harness.

The speed sensor was easy - I just cut a speed sensor extension in half and added about 10' of 4 conductor wire (only 3 are required and the wire colors exactly matched what the sensor extension had - so this was an easy job). The harness was more of a challenge because there are more wires and wire colors did not match - I used some cat5 cable to extend the harness connection to the display.

Finally I ran the sensor and power cables through a sheath to tidy up the wiring from front to back. So the picture of the battery pack that shows the power cable that goes to the motor unit has been combined with the speed sensor wire and covered by a black sheath. It was a bit of a chore to get both cables through the sheath but the end result was clean and professional looking install.

The battery is an AllCell 48v-20Ah monster. It fits snugly into the rack pack. Power connections are Andersons and the charge connector just plugs directly into the charger. Looks to be very well made and comes with a 2.5A charger. Looking for a 5A charger - any ideas?

Enjoy:
TTT+BBS02-1.jpg
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TTT+BBS02-2.jpg
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TTT+BBS02-3.jpg
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Last edited by RWP on Fri Apr 18, 2014 5:55 pm, edited 3 times in total. View post history.
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Re: Bafang 750W BBS02 on a Recumbent Tandem Trike?

Postby Hasaf » Fri Apr 18, 2014 6:27 pm

neptronix wrote:It'll be up to the load if you're willing to accept lower speeds and have the correct gearing.

imho 750w does seem like a very meager figure to haul two people with. I would get something much stronger.


My daughter and I use an e-scooter with a 650W direct drive as our primary transportation. When fully charged it seems to work fine, we normally ride between 35-40kph with both of us on it and 40kph (top regulated speed) if we are alone.
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby Kepler » Fri Apr 18, 2014 8:02 pm

Great conversion RWP. I think your friend and his wife are really going to enjoy riding this trike. The BBS02 is a great fit for this application.
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby RWP » Sat Apr 19, 2014 11:37 am

Kepler wrote:Great conversion RWP. I think your friend and his wife are really going to enjoy riding this trike. The BBS02 is a great fit for this application.

Thanks Kepler!
You are right - they are really enjoying the freedom and outings!
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby The fingers » Sat Apr 19, 2014 12:31 pm

Just showed the pics to my wife. That is a very looooooong trike! 8) I guess a wireless intercom system would be necessary for the "back seat driver". :D
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby RWP » Sat Apr 19, 2014 5:30 pm

The fingers wrote:...I guess a wireless intercom system would be necessary for the "back seat driver". :D

Sounds great :lol:
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby tomjasz » Fri Apr 25, 2014 6:38 pm

Fantastic ride. Well done! I'm searching down and looking at trikes. I didn't know this bike even existed. WOW!
2-KHS Manhattan Smoothie unisex crank forward "townie"style bikes, black beauties
2-Bafang BBS01 36V 350W Mid Drive Kits,
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140200161 K5ECR0F0208 1402200279
2-36V Frame Mounted Packs 13.8Ah(10S 5P, 29E)& 11Ah (10S 5P, 22P))
I'm in!
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby radoCol » Sat Apr 26, 2014 12:17 am

Hi, what a great conversion! Please post a video of driving :-)
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Re: BBS02 on a Recumbent Tandem Trike! RUNNING WELL!

Postby Aushiker » Thu May 08, 2014 5:24 am

RWP wrote:The speed sensor was easy - I just cut a speed sensor extension in half and added about 10' of 4 conductor wire (only 3 are required and the wire colors exactly matched what the sensor extension had - so this was an easy job).


Do you have a link to the speed sensor extension you used? I need to extend the speed sensor on my Bacchetta Giro.

Thanks
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Re: BBS02 on a Recumbent Tandem Trike! RUNNING WELL!

Postby RWP » Thu May 08, 2014 12:29 pm

Aushiker wrote:
RWP wrote:The speed sensor was easy - I just cut a speed sensor extension in half and added about 10' of 4 conductor wire (only 3 are required and the wire colors exactly matched what the sensor extension had - so this was an easy job).
Do you have a link to the speed sensor extension you used? I need to extend the speed sensor on my Bacchetta Giro. Thanks Andrew
Contact http://www.LectricCycles.com
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby jateureka » Thu May 08, 2014 6:09 pm

Nice install.
My Terra Trike had quite a large turning circle until I fitted an adapter plate to the steering pivot. I can only imagine that two seater must have the turning circle something akin to a 4WD ute! :shock:

One thing I note about the install is that the motor has not been fitted with the rubber pad hard up against the frame tube, as per the install manual, so if you find the BB comes loose then it may be an idea to loosen it off and rotate the motor and mount clockwise until it presses against the frame. (then re-tighten the BB nut / lock ring).
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Re: BBS02 on a Recumbent Tandem Trike! RUNNING WELL!

Postby Aushiker » Thu May 08, 2014 8:03 pm

RWP wrote:
Aushiker wrote:
RWP wrote:The speed sensor was easy - I just cut a speed sensor extension in half and added about 10' of 4 conductor wire (only 3 are required and the wire colors exactly matched what the sensor extension had - so this was an easy job).
Do you have a link to the speed sensor extension you used? I need to extend the speed sensor on my Bacchetta Giro. Thanks Andrew
Contact http://www.LectricCycles.com


I have a sensor extension coming but I thought from your comments that you may have come up with a solution which I could have sourced locally. No worries I will wait for the extension.

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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby Aushiker » Thu May 08, 2014 8:03 pm

jateureka wrote:One thing I note about the install is that the motor has not been fitted with the rubber pad hard up against the frame tube, as per the install manual, so if you find the BB comes loose then it may be an idea to loosen it off and rotate the motor and mount clockwise until it presses against the frame.


Good catch. Missed that with my own install as well.

Andrew
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby GiantEV » Mon Jun 16, 2014 2:20 am

Does this tandem use IPS (Independent Pedaling System)? If so, does the BBS02 take that away?
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Re: BBS02 on Recumbent Tandem Trike! RUNNING WELL!

Postby RWP » Mon Jun 16, 2014 11:15 am

GiantEV wrote:Does this tandem use IPS (Independent Pedaling System)? If so, does the BBS02 take that away?

Yes, it retains the IPS - and no it does not go away. The BBS02 has a freewheel just like the freewheel on the IPS system.
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