Recent content by PJD

Street legal and titled in Pennsylvania. Has a 40AH 48 volt Thundersky/Winston cell main pack and a 40ah 12V "booster" pack. Original style Fecher-Goodrum BMS. With a healthy pack, range was at least 35-40 miles and in 60V "boost" mode, top speed was 45mph. The 14 year old pack is degraded...

Different kind of so-called "scooter"! This forum discusses real scooters of the electric-powered variety.

Yes; the owner and the place where ZEV's are assembled are near where I live. Maybe the quality has improved but when I test rode a couple of their models in 2011 I was not too impressed. Even if the quality has improved, they still don't have two features that are essential for any kind of...

bigbore and parabelluim, The crack is too thin to photograph I would have probably needed dye penetrant testing if I didn't know right were to look. but no doubt widens under the air pressure load. Obviously, a crack in a car or motorcycle wheel is potentially dangerous structural defect, the...

abbreviation for "If I recall correctly"

My motor is essentially the same as the one below except for being a V2 with the greater number of poles. This would be the one I would have to get if I have to replace the whole thing as the V3 is not much more expensive. $681 with shipping...

markz, The wheel is integral with the motor - so a welding repair is likely to damage the expensive motor. My point was that the the wheel rim needs to be detachable from the motor for repair or replacement - like any other kind of vehicle. The hub motor/wheel assembly cannot be attached to...

A few questions for QS Motor... I have a scooter with an older model 13-inch QS motor used in a Current Motor Company maxi-type scooter which was assembled at their facility in Ann Arbor, Michigan, USA. Current Motor is now out of business and I am unable to contact their former...

Er... in the USA "hire" refers to employing someone and is used in no other way. The correct word you needed to use is "rent" a boat. Don't expect a USAn to know all the strange words you Brits use. Also, try to speak more clearly. Especially, learn to properly pronounce "Glass of water" or...

I received my V 4.4.3 boards, Instruction and BOM, and have ordered the parts. FYI,with no MTA connectors, and the slightly cheaper plain aluminum Hammond box, the bill was $94.11. I have couple questions and comments: 1. As someone else commented way back, resistor R14 is still listed on the...

Gary or Richard, After receiving the board, I just noticed that the instructions say the CV voltage of the charger must be adjustable. However, this isn't the case on the chargers I have, which are currently being used with my old 16-cell V1.5 boards. These charger's CV voltage is...

What type of BMS will you be using? The Zephyr BMS (do a search on this forum) is fairly unique in that it will work with ordinary Pb-acid chargers. Most others need a purpose-built charger that can be switched to a low rate of charge once the balancing starts. Also, for the 20-cell pack you...

That is another way of viewing it, although if they were balanced to start off, they should be discharged the same amount and should reach "full" at the same time as well. The few cells that I actually had to replace behaved as Richard described - as if they were self-discharging and so got...

Fechter wrote: In the case of my Thundersky cells, it is the less-healthy cells that come up to the shunt voltage sooner while the healthy new new cells lag behind. I learned this when I had to replace a couple bad cells in the pack with new ones. The cause of this is simply that the mode...

Well, the old, unsophisticated V1.5 boards continue to work well for me (or is there something I need to know?). Even when charging at 16A by doubling-up the chargers the masonite cover over the board only gets a bit warm over the charger control FET. They may not be capable of shutting...