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close to Banbridge here, you mean Lough Neagh? How many miles that?

Erm.... i use gear oil, o_O does smell a bit if you get it on the jeans tho`

a great answer Dan, i should have listened to my Physics teacher more closely, probably this bit here is key looking back on it "As a youngster, you were energetic and could put maybe 150watts if power into the bike .. maybe 200 watts when you were sprinting. The extra loss of a couple of watts...

yeah, know what you mean SW, but i`m not after perpetual motion, only the possibility of adding a little time, say 15mins to the battery life over 100 miles or so

Dan, I think you`re missing my point here... Many years ago i used to have a bike that had that SA type front hub, i rode it night and day, and i can assure you it made no difference to effort/input on whether i switched my little front light on or off, certainly not to the extent of a whopping...

Or how about reading the thread from the beginning, it`s about putting a current back into the battery if possible, and i can assure d8 i didn`t have to put an extra 6% effort into my pedaling just by switching the lights on! Thats in line for `silly statement of the year`! I can also confirm i...

if its not working then why do the lights work when i spin up the wheel??

You mean turn the lights on, lol?!! Yes, isn`t that what i`ve been saying for goodness sake!!? The wheel spins effortlessly. please try and keep up d8.. the effort you talk about expounding is already being put in anyways when you are riding the bike so its not an extra effort, haven`t you...

I can spin mine with no resistance whatsoever, however! would the uV output from those type be at all worthwhile at over say 50 miles??

So in the front hub dynamo where/how was the drag introduced `when you put the lights on`?? I know there wasn`t. why? Cos i rode them for years, You lifted the front wheel off the ground it spun freely, you had lights!! ZERO resistance!

d8veh, not true, don`t you remember those old front hub dynamos? You could hold the bike off the ground and spin the front wheel, it would go on for ever, similar to this...

similar to this or maybe the old hub type.... in fact i remember having the front wheel hub type and there was zero drag on pedaling

True, yes i had the little dynamo that you flicked over onto the sidewall of the tyre, but how about those of us that live in hilly terrain, can`t we get that dynamo to auto-engage on downhill parts when we stop pedaling? Surely that would be something for almost nothing?

.. ..so you`re on your fourth motor now??!! righttt, gotta be thankful for small mercies etc..

Fitted this Promax front kit to my BBS conversion, left the rear as is. £20 at the time http://www.ebay.co.uk/itm/PROMAX-Mountain-Bike-Front-160mm-Hydraulic-Disc-Brake-set-Right-hand-lever-/282256644729?_trksid=p2141725.m3641.l6368

Yeah, a plane catapult......suppose you could just use a different rubber band.... :rolleyes:

Not realistic at all, the G-forces involved would be unacceptable

No, shouldn`t do, this was mine when i was building, the BBS02 motor casing touches the guide but doesn`t interfere.

think you should have soldered it John

how about this boards self-appointed FunPolice who continually jump in when there`s a mention of a `dongle` or exceeding 15.5mph ??!! ... just sayin` like