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if it's too good to be true then.. you know. I still think for mountain roads, crank drives are best.

I did think hard about this battery issue and could add a third term for the battery. However, on reflection, most premium bikes come with good batteries (eg built by BMZ) which will last for 5 years, so the formula comes close to giving it a realistic value. On the other end of the spectrum...

proposed formula for second hand value: Assuming column A holds the purchase price, B the purchase date, try this formula in column C: (the formula below is for cell C3) =1000 * 0.7^( (NOW()-$B3)/365) + ($A3-1000) * 0.65 ^( (NOW()-$B3)/365) Example 1: Premium brand bike today is...

For a proper market for second hand bikes, there should be a choice at the time you are selling yours of 3 or more bikes of the same (or closely) model as yours being offered for sale on ebay, gumtree, preloved etc. If this condition is not met, your best bet is a trade-in. For a fire sale...

I also watched the video. The guy mixes facts and fiction to support his view. Firstly, the risks are not the same for different classes of liabilities so bundling them together is nonsense. Secondly, our economy is nothing like the Weimar republic's.

The general depreciation factor (r = 0.3 per annum) applies to the tangible element of the bike. Premium products carry an intangible prestige element subject to the same depreciation but at different rate. The value of this element is naturally the difference between an average bike and the...

it's common to use logarithmic scale for residual value, with d = age in days, r is usually 0.3 for vehicles, V = cost * (1 - r) ^ (d/365) Alex's bike would be worth around £1,900. However, for luxury items, one should deduct also for brand depreciation which depends on the presence of a...

TBH, for a free version, my favourite is myBB. Simple and easily customized. plus ça change, plus c’est la même chose.

The ride map is in the review article, you only have to input the addresses into google to get the elevation profile. The test starts with a warm up 8km on flat roads and a mountain test. In the mountain test, the mountain course is 11km long, 557m elevation (about 5% gradient on average) but...

in practice, the BBS01 is faster and quieter. This is because it is very efficient on 11/12T, a common factor among crank drives. The only real drawback of crank drives is gear change noise, Bosch has done a good job of reducing it, Chinese manufacturers won't be far behind.

you need to place a small value (5milliOhm) resistor in series with the battery and also connect the test module to the charging port. All these points are easily accessible. The point is, you have a reference design that lets you connect to a general WIFI system like BTFON with not much effort...

kudosdave, resist the dark side! Leave Frank to it. where you lead, others follow - if only because you sell a lot more bikes than they do!

the way it monitors the battery is very interesting. http://www.ti.com/lit/ug/sluu904/sluu904.pdf

the swellling should be a good indication of internal short causing the electrolyte to decompose. The BMS would stop charging if there is a shorted cell in any case. It would be good if there is an internal sensor telling the BMS of any swelling.

this link may help: Yiyun Electric Controller 36V800W Electric Scooter Water Proof YK31C Brushed, Electric Bike Part, El on CPbay.com Specifications: YIYUN controller compatiable 36V800W Brushed Model Name: YK31C Short voltage protect: 20± 0.5V Size: 100*69*38mm Throttle: 1-4V This...

the aftermarket tends to centre around low cost, quick fit kits - not suitable for large manufacturers like AEG. Going after OEM requires a more advanced, inovative design otherwise, the OEM would have no incentive to change supplier. On this front, Bosch design seems to be a lot more...

With this type of stand, I would want to clamp the seat pin or the cross bar to hold the bike up - then the 4 legs will get tangled with the cranks. Not good.

Yes to 15A continuous for BBS01. The controller at the base of the bottle is not strong enough for the Bafang CST.

Have you checked the knowledge base of Lishui controllers? Nanjing Lishui Electronics Research Institute Co.,Ltd. www.lsdzs.com the brake sensors are on a pair of two wire plugs - usually black/gray - unplug one at a time to test for dodgy switch.

john f, the manual for your King Meter LCD is here: http://old.i4wifi.cz/inc/_doc/attach/StoItem/3388/KingMeter-LCD.pdf Error 25: Brake abnormality (meaning brake sensor is on) - this happens when you squeeze the brake handle when switching on the LCD. Releasing the brake handle will remove the...