Ooooo yeah, more data please, that looks very interesting.
Any chance of the source of these ? I'm thinking this would be a nice electric bike upgrade for me
although 7kw might be a tadge too much ....... I can see broken spokes
Not really Chris, youv'e seen my E-bike with the Lynch motor,
rotate the twistgrip smartly, up comes the front wheel
rotate the twistgrip sharply and you'll be on your back with the bike on top of you
At the most I guess the Lynch motor at 24v pulls about 4 hp to 4Kw.
And you know how torquey they are.
The 60 tooth rear sprocket does come a wee bit loose sometimes, havn't tightened it for about 3 years -
must check that
No problems with spokes, although, when I rebuilt the wheel I did put a bit of extra tension on the spokes,
to prevent the wheel warping under full power.
I do like the idea of Jeremy's lightweight motor, I cannot imagine it would have the torque of a Lynch motor at, say 0 - 10 RPM.
Properly geared to to give 20 mph on the flat a max RPM Jeremy' motor should give good uphill performance,
you don't have that problem on Happy Hayling
I do in Hilly Hertfordshire. Up hills = battery killer
Talking of batteries, I bought two used Sonneschein 12v 30ah SVLA A500s from Neil B about 8-9 years back, for the E-bike,
they're still going, admittedly not as strong.
And Iv flattened them
to the point the bike won't go,
they must have had a few thousand cycles since Iv had them
(No low volt lockout, been disabled) on my Curtis controller.
Brings the Q, are SVLAs more long lived than some of the modern lightweight equivelants
I have similar batteries (bought from Neil of course) on my home made traversing elevator they are still strong, fitted 2003.