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[ordnaj3la]

Hey! I finally got my 2018 Trek Marlin 7 to convert to electric with the BBSHD. Hopefully with these pictures, you guys can answer my question. I'm worried that my chainstay flares out too much, idk if I should get the standard 68mm-73mm BB. My BB Shell is 73mm, BSA. Thank you very much!

[HIGHVOLTAGE]

It does look like it flares quite a bit but we still don't make confirmations on this kind of stuff because it puts us in a bit of a "he said/she said" position. So buy the 73mm-100mm and see how it fits, if it fits too large, you can always return it for another size.

[ordnaj3la]

Thanks for the reply!

[ncmired]

Hey! I finally got my 2018 Trek Marlin 7 to convert to electric with the BBSHD. Hopefully with these pictures, you guys can answer my question. I'm worried that my chainstay flares out too much, idk if I should get the standard 68mm-73mm BB. My BB Shell is 73mm, BSA. Thank you very much!

Here's some Trek Marlin (# variations) build reports / discussions:

https://electricbike.com/forum/forum/builds/ebike-building-directions/30088-backyard-bbshd-install-on-2013-trek-marlin-complete-build-report#post30088

https://electricbike.com/forum/forum/builds/customer-gallery/67186-trek-marlin-7-bbshd#post67186

https://electricbike.com/forum/forum/main-forum/introductions/63293-greetings-from-cny#post63293

https://electricbike.com/forum/forum/builds/ebike-building-directions/14811-list-of-bike-build-threads-to-be-bbshd-or-bbs02-compatible-pictorial?p=62998#post62998

https://electricbike.com/forum/forum/main-forum/diy-discussion/46556-feedback-on-my-first-build#post46556

[ordnaj3la]

Wow! This is amazing

[fos'l]

Today rode BBS02-equipped hardtail off road with approximately 3 year old 52V, 10 ah Luna battery, which charges to 58.8V as specified. Traveled about 12 miles with 1600' of climbing. Checked charge of battery after and result was 57.8V suggesting less than 10% of battery consumed. Any ideas on likely problem (I'll recheck with a second meter when I procure one)? Thanks.

[HIGHVOLTAGE]

10% of the battery at full charge is very very very different than 10% of battery at mid-charge. A battery will drain much faster from 58v - 57v than say, 55v to 54v. Most of your range comes from your mid-charge level and not your lower/higher end charge level.

You can think of it like a bucket of water that's pressurized. Once you poke a hole in it, the pressure will force a bit of the water to drain out faster than normal for a bit before equalizing at a regular drain rate. This is kind of the basic concept of batteries.

EDIT: Actually re-reading this now...what is the problem even? 12 miles is pretty damn good for less than 10% of the battery used

[ncmired]

I was wondering what level of assist you were using?

[fos'l]

No complaint especially on a three year old battery (can't remember, but I purchased it as soon as Eric started offering them). Just seemed very low, and translated to <10% use on your Voltage/capacity chart. I used level "2" (of 9) when ascending, level "0" on the flat or descending.

[ebikenwb]

Hello! LunaCycle website directed me to this link. I'm trying to buy the BBSHD, but when it comes down to the display options, it forces me to choose either the C965 or the 750c. I'm not interested in neither, I'm interested in the DCP-14. Is there something I can do about this? I wouldn't want to pay for a display I won't use. I have a 52V battery and plan to use Hydraulic E-break sensors. I need a display that shows when the motor is cutoff to make the install easier, as well as a display that accurately reads the 52V battery levels.

Would it be easier to install hydro ebrakes with the sensor built in them already? What types are there out there?

Finallt, Is the 68-73mm one size, or do I specifically ask for a 73mm motor; I have a 73mm bottom bracket shell. Thank you very much for your time and help!

[HIGHVOLTAGE]

DPC-14 is no longer available unfortunately. The DPC-18 is the more improved version and can be purchased here:

https://lunacycle.com/luna-full-color-display-dpc-18-for-the-bbs02-and-bbshd/

The 68mm-73mm is just one size, if you have the 73mm BB, then just go with that one. :)

Also we usually just keep the eBrakes unplugged. They add wire clutter and are rarely ever even used by most of the staff here. Just use your default brakes. Someone else can chime in more about this but I personally have never used the cut-offs and find them clunky and ugly. Clean builds are the best builds.

[indyengr]

I have a full-color DPC-18 with 270 miles and may be willing to swap for new 750c display if you are in LA area.

[Lawrence Rhodes]

I have a trike which has been identified as English thread BB...but maybe the better option to keep three chain rings up front is to use the Cyclone Double Sprocket Kit for Trikes, Recumbents and Pedicabs I can then just use the bigger motor a cadence sensor and be done with it. However many needed parts are out of stock. I guess I will simply wait till they are available. Any information on when supplies will be restocked? Sorry for the font. Lawrence Rhodes

[paxtana]

What specifically were you looking for?

[Lawrence Rhodes]

Thanks for responding. 3 Speed Adjustable Switch wth Cruise Control, Cyclone Pedal Assist Add on Cadence, Cyclone Mid Drive Ebike Motor With Freewheel Sprocket $219.99. Dual sprocket kit for cargo bikes...etc and 40 amp controller in stock. Seems I am not the only person with this idea. I suspect I can adapt my brakes with two wires and a switch. I would need to know if the controller sensor for brakes is a simple open or close circuit. Lawrence Rhodes

[ebikenwb]

Thanks for the info! I see, in that case, am I able to purchase the DCP-18 with the kit? The kit only allows me to choose one of the two options, if anything it wont let me not order a display. Then I'd have two displays, more money for no reason :(.

Thanks again for the advice with the breaks. So I'll just stay with my stock hydraulic breaks and not even purchase a sensor. It's out of stuck anyway lol. But now, what is your opinion on the gearsensor? Worth the $40-$50?

[HIGHVOLTAGE]

Right now the DPC-18 is very low on stock and unfortunately we've taken it off the kit options until it's re-stocked in 3-4 weeks or so. It can still be ordered separately though

The Gear Sensor is not a requirement and completely optional. You cannot shift the bike while the motor is active because the immense torque puts too much strain on the chain and rear derailleur, so the gear sensor when installed will automatically cut the motor power for a brief second as soon as you hit the shifting lever and the residual energy from the motor being cut off is enough to switch the gears over gently, which will allow a smooth seamless shift. Of course this can also be done manually by just letting go out of the throttle and shifting hence why it's an option and not a requirement, but the Gear Sensor does bring a lot of convenience to it.

[Redorblack Niglebottom]

Got the MAC ASI kit and the connector fell off the 2 wire throttle leads. Is there a wiring diagram? Orange single wire also failed with the wire falling out of the terminal with a poor crimp. Put it back the way I thought it came out, but now the keyed half grip throttle with voltage meter lights up with battery voltage but does not spin the motor when throttle is twisted. I didn't find any instructions at all in the box, but this is seems about impossible to screw up after doing a bunch of other electric bikes including BBS02 and BBSHD. I'd like to suggest looking into weather sealed connections for the MAC kit like you have on the BBS02 and BBSHD as a future improvement. The connectors used on my kit for the phase wires look pretty cheap and they aren't very solid of a connection and the other connectors are the same crap all the cheap controllers/throttles use. Note that on my kit the connector failures are all on the throttle side which I suspect you didn't wire.

[paxtana]

Thanks for the feedback. For diagram and that sort of thing you'll want to email us so we can forward it to our lead support technician Seb.

[ChrisJTX]

Thanks for the info! I see, in that case, am I able to purchase the DCP-18 with the kit? The kit only allows me to choose one of the two options, if anything it wont let me not order a display. Then I'd have two displays, more money for no reason :(.

Thanks again for the advice with the breaks. So I'll just stay with my stock hydraulic breaks and not even purchase a sensor. It's out of stuck anyway lol. But now, what is your opinion on the gearsensor? Worth the $40-$50?

IMO, a must have...put the money you saved from the brake sensors for the gear sensor.

[Tommycat]

I don't think I would EVER discourage someone from using a safety device such as this. I've found them personally priceless, especially if letting someone else ride your bike!

[ChrisJTX]

Not trying to discourage. Just saying if the op decides not to get the brake sensors to use the funds for the gear sensor.

[ebikenwb]

Will do, thanks so much ;)

[IKatLarge]

What's the physically smallest battery compatible with the BBS02 750w motor? Can the 750w motor be reduced to 500w to allow a smaller battery?

[HIGHVOLTAGE]

I mean compatibility is kind of the wrong term to use. And it also depends on whether you're going to ride it at 500w or at 1400watts. If you only plan to ride at 500 watts. That means the motor only is only going to use 10 amps of power from the battery, which means pretty much any battery on our website will work as they all do a minimum of 25-30 amps continuous.

So to answer your question, pretty much any of them. You can literally pick the smallest and it'll probably work under a 10 amp setup easily. Just make sure to consider how much range you need also. Smaller the battery = less range you get on it.

[weetard]

hey guys...i just got the BBSHD standard, and i am making a fat bike...totally spaced it and ordered the wrong one. is there anything i can do to convert it to the 73-100mm? or do i have to return and order the fat one?

thanks

[HIGHVOLTAGE]

You'll probably have to return it. Email support@lunacycle.com with pictures & an order #.

However it'd be helpful if you could tell us why it doesn't fit? Maybe you just need some spacers if your BB is 73mm assuming your chainstay doesn't flare out.

[weetard]

hey guys...i just got the BBSHD standard, and i am making a fat bike...totally spaced it and ordered the wrong one. is there anything i can do to convert it to the 73-100mm? or do i have to return and order the fat one?

thanks

im doing the same build as user 'msim'. (his build is in the intro forum) i ordered this frame. he went with the 73-100 bbshd with 6mm drive side spacers.

you think im good with standard?

[weetard]

hey guys...i just got the BBSHD standard, and i am making a fat bike...totally spaced it and ordered the wrong one. is there anything i can do to convert it to the 73-100mm? or do i have to return and order the fat one?

thanks

[weetard]

im doing the same build as user 'msim'. (his build is in the intro forum) i ordered this frame. he went with the 73-100 bbshd with 6mm drive side spacers.

you think im good with standard?

yeah i ordered 8mm of spacers yesterday. thanks for your guys quick replies...really appreciate it.

[weetard]

im doing the same build as user 'msim'. (his build is in the intro forum) i ordered this frame. he went with the 73-100 bbshd with 6mm drive side spacers.

you think im good with standard?

here is some info about the frame...what ya think?

[HIGHVOLTAGE]

Is it the exact same frame? From what I see on the Q&A, it says you'll need the 100m size, so that's about the best info you can get assuming that's the exact same frame. Just refer back to what I said earlier about emailing support.