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BBSHD powers down at PAS level 5

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  • 73Eldo
    commented on 's reply
    Dunno. The BBSHD has a little extra length on it to start with over the BBS02's so I don't think you will need the extra space on a 73. Going to the 100 is an extra inch you have to fill with spacers and that will be sticking out the non drive side, that's kinda a lot if you don't need it.

  • Tall Guy
    commented on 's reply
    The 73-100mm is in-stock right now. I know the 73 is right where I am at so I wonder if it would be a good fit or just wait for the normal size to come in.

  • Mike_V
    replied
    Did you check your main power connections for quality, corrosion, or bends in the wire; all things that may increase resistance and lead to thermal system shutdown?

    Leave a comment:


  • AZguy
    commented on 's reply
    I may be optimistic that the ones I'm using are 20AWG and wouldn't be surprised if they are thinner - it was just a WAG.. I still wouldn't worry, even 26AWG (or smaller) can carry 5A although if they are that small they may get warm - the ones I'm using aren't even getting warm that I can tell by touch

  • 73Eldo
    commented on 's reply
    Last couple fairly cheap sets I have bought looked like maybe a 22 gauge but only had a single strand inside so maybe a 40 gauge? Also if you squeezed the them the wrong way you just crushed them. That quality and style seems to be sold under a lot of different names these days. They are the ones that come in multi colors in a set of like 12. I don't remember what I was doing with them when I discovered how bad they were, thinking it was using a 9v battery so not talking much current there.

  • AZguy
    commented on 's reply
    Frankly about anything will take 5A, it's not a big deal and even cheap alligator clip leads will work fine... like I mentioned I'm using 20AWG relatively cheap leads I picked up at Frys

  • 73Eldo
    replied
    Thats good to hear. Makes me think they guy wasn't likely out to screw anyone, he just doesn't understand that sitting for 2-3 years at least may have killed the pack.

    I think I saw Pax say that they have a shipment of 73mm BBSHD's sitting at the LA port now so hopefully in the next week or 2 they will find their way into stock. You can go to that thread and ask to be notified by email when they do come in if you don't want to check every day. With items like the BBSHD kits they seem to get quite a few in with every order so they don't tend to sell out in hours or days like smaller quantity stuff like bikes do so you don't have to be checking the store multiple times per day to catch them.

    Leave a comment:


  • Tall Guy
    replied
    I just talked to the seller and he graciously agreed to refund me my money. Now I need to purchase a new BBSHD mid-drive and battery. I'll open a threat on the bike build for suggestions on what I should get/need. Thank you again for your input! I'm sure it will come in handy in the future.

    Leave a comment:


  • 73Eldo
    replied
    Great idea on the goodwill. I would guess they have a ton of them for cheap and since its turning into a shop tool don't really care if its a little crusty or is missing the cord or lid.

    Now where to tell you to find alligator clip wires. Home depot seems to sell the clip part but not with the wires. They are easy to find online but 97.53% of them are total garbage that will never take the 5 amps we need here. I think I will jump back to that thread and claim your goodwill idea then ask if anyone knows an easy place to get the leads.

    Leave a comment:


  • Tall Guy
    replied
    Thank you both. I am not versed in electrical stuff so learning more about voltage is helpful. Yes, I am 6'5" and the bike frame is definitely too small for me compared to my 29" tire 21" frame mountain bike. Hanging onto it for friends to ride is a good idea, but will limit my buying a new motor/battery for awhile until I have the funds again. I'll see if I can find a electric griddle at Goodwill or borrow a friends. :)

    Leave a comment:


  • 73Eldo
    replied
    120 is a lot for a 73 bb. Thats pretty much 2 inches of extra space which all ends up on the non chain side of the bike. An extra inch isn't terrible, some actually like it because it gets the crank arms more centered and some people say that bothers them. Most people don't seem sensitive to that especially the typical E bikers that are not athletes. 2 inches is getting to stick out pretty far and would require a lot of spacers which would not likely be good long term for staying tight.

    I assume the fat bike is just too small for you? If it was a reasonable size then you could look at swapping on some 29" wheels since they are about the same diameter as fat 26's. There are also some more mellow tires that fit fat rims that can make them a little more decent on the streets but if its too small none of that will help. If you can afford it maybe keep it around for others to ride? Unless you like riding by yourself you will be trying to convert others to e biking and its nice to have an extra bike around to let them ride and hopefully get hooked so you have people to ride with. Having an extra bike that is smaller is usually good since it fits more people and even tall people that have not ridden recently tend to me more comfortable on smaller bikes. My other justification for having an extra bike is spare parts. Even if the BB with is different there are still a ton of parts that can swap between units. Just having the ability to swap displays and cables can be handy for if you have issues with one bike.

    Leave a comment:


  • AZguy
    replied
    Originally posted by Tall Guy View Post
    It is currently 93% charged and I was told it only had 4 charge cycles since it was purchased. It is reading 52.6V but I didn't notice a voltage sag. Original owner bought everything a year or so again from Luna.
    Just to be clear, when we refer to "sag" we are considering how much the battery voltage drops under load - how much voltage with zero load at rest then how much voltage when loaded significantly, that difference in voltage is "sag"... no offense meant if you already understand that

    Sag is greater at low SOC's (lower battery voltages)


    When I read your post the first thing that popped into mind was that you are getting excessive sag under higher loads and that is tripping an LVCO


    Like 73Eldo says I'd run it through several cycles of 100% charge and good steady discharge. the 200+W pan is good for this, will take 2-3hrs to discharge and is a light enough load to minimize risk of damaging cells that are terribly out of balance and high enough to be able to see some sag - and use some sort of meter, percent bars provided very low value regarding battery voltage and SOC

    Leave a comment:


  • Tall Guy
    replied
    Thank you, 73 Eldo. I'll give that a shot. Downside is I just learned from Luna support I will probably not even be able to use this motor on my new bike as it is 120mm and won't work with a 73mm bracket.

    Hopefully I will be able to sell for what I bought it for to someone who wants a fat tire e-bike. Guess that is what I get for relying on the seller's assurances instead of doing more research myself.

    Leave a comment:


  • 73Eldo
    commented on 's reply
    This will get the job done and doesn't have a lot of confusing options you will hardly if ever need and is under $15 at home deopt and a stock item for most stores.
    https://www.homedepot.com/p/Commerci...132R/207038607

  • 73Eldo
    commented on 's reply
    Here is the electric cooker to discharge a battery thread:
    https://electricbike.com/forum/forum...discharge-load
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