Hub dynamos for 20" wheel
Re: Hub dynamos for 20" wheel
Same as before; the Shutter Precision SV-8
https://www.bike24.com/1.php?content=8; ... 8;page=144
https://www.tritoncycles.co.uk/componen ... hub-p11401
or there's the SV-9 for £ extra and g less
https://www.tritoncycles.co.uk/componen ... 692/s42836
https://www.bike24.com/1.php?content=8; ... 8;page=144
https://www.tritoncycles.co.uk/componen ... hub-p11401
or there's the SV-9 for £ extra and g less
https://www.tritoncycles.co.uk/componen ... 692/s42836
Re: Hub dynamos for 20" wheel
Another vote for the sp8 .have one on the grasshopper compact and light.
NUKe
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Re: Hub dynamos for 20" wheel
I fancy the SV-9.
.............. just got to make my mind up to buy or not.
.............. just got to make my mind up to buy or not.
Mick F. Cornwall
Re: Hub dynamos for 20" wheel
Likewise (except mine's an SD-8).NUKe wrote:Another vote for the sp8 .have one on the grasshopper compact and light.
"42"
Re: Hub dynamos for 20" wheel
andrew_s wrote:Same as before; the Shutter Precision SV-8
https://www.bike24.com/1.php?content=8; ... 8;page=144
https://www.tritoncycles.co.uk/componen ... hub-p11401
or there's the SV-9 for £ extra and g less
https://www.tritoncycles.co.uk/componen ... 692/s42836
SP PV8 for even less ££ at Spa
Re: Hub dynamos for 20" wheel
AM7 wrote:SP PV8 for even less ££ at Spa
But that doesn't match Mick's specifications, the bit about being meant for a Moulton-sized wheel in particular.
Re: Hub dynamos for 20" wheel
andrew_s wrote: But that doesn't match Mick's specifications, the bit about being meant for a Moulton-sized wheel in particular.
Mick said he was thinking of fitting a dynohub to his Moulton and he specified that it must be 100mm OLN, silver, 28h, and for rim brakes. The PV8 meets those requirements I think Brucey established upthread that a hub for 700c wheels will work fine on smaller wheels, but I guess it's up to Mick to decide if he wants to spend more on a hub designed for 20" wheels rather than one that isn't but will work anyway!
Re: Hub dynamos for 20" wheel
I've got 3 of them SP PV8s.
Oldest is 4 years and at least 20,000+ miles in every all year round weather that Snowdonia can muster. Second oldest started making a creaking noise after 2 years and out of warranty, with at least 7500+ miles - sent back to Ison the distributor for an exchange reconditioned hub at a cost of £25. In fact I got a new hub as they didn't have a silver 32 hole to exchange ). The third is built up into a 20" CR18, 28 hole for the TSR Moulton (when I get around to deciding where to mount the Edelux2 Headlamp on a TSR ).
All three are PV8 - even the 20" wheel one. I see no reason (with a bit of investigation) why it won't perform with the smaller wheels. I am prepared to risk it and find out.
£60 from good old Spa in 28 hole and silver http://www.spacycles.co.uk/m2b0s133p3036/SP-DYNAMO-PV-8
Oldest is 4 years and at least 20,000+ miles in every all year round weather that Snowdonia can muster. Second oldest started making a creaking noise after 2 years and out of warranty, with at least 7500+ miles - sent back to Ison the distributor for an exchange reconditioned hub at a cost of £25. In fact I got a new hub as they didn't have a silver 32 hole to exchange ). The third is built up into a 20" CR18, 28 hole for the TSR Moulton (when I get around to deciding where to mount the Edelux2 Headlamp on a TSR ).
All three are PV8 - even the 20" wheel one. I see no reason (with a bit of investigation) why it won't perform with the smaller wheels. I am prepared to risk it and find out.
£60 from good old Spa in 28 hole and silver http://www.spacycles.co.uk/m2b0s133p3036/SP-DYNAMO-PV-8
Current pedalable joys
"you would be surprised at the number of people in these parts who nearly are half people and half bicycles"
"you would be surprised at the number of people in these parts who nearly are half people and half bicycles"
Re: Hub dynamos for 20" wheel
andrew_s wrote:AM7 wrote:SP PV8 for even less ££ at Spa
But that doesn't match Mick's specifications, the bit about being meant for a Moulton-sized wheel in particular.
I don't think it matters much that way - the dynamo will just be rotating faster for a given speed with the smaller wheels. In fact that may even give better lighting going up long steep hills which may be advantageous in MickFland!
Using an SV-8 in a big wheel may not be such a good idea as you probably won't generate so much power (the Bike24 link earlier quotes 2.4W instead of 3W).
Former member of the Cult of the Polystyrene Head Carbuncle.
Re: Hub dynamos for 20" wheel
[XAP]Bob wrote:20" wheels rotate faster than larger wheels, so hub dynamos need to take that into account. I have a SON, but noone else did (does) a stub axle dynamo.
Sturmey do one.
'Give me my bike, a bit of sunshine - and a stop-off for a lunchtime pint - and I'm a happy man.' - Reg Baker
Re: Hub dynamos for 20" wheel
Brilliant!AM7 wrote:SP PV8 for even less ££ at Spa
SP PV8 gets my vote now.
Mick F. Cornwall
Re: Hub dynamos for 20" wheel
Does it come with a QR?Mick F wrote:Brilliant!AM7 wrote:SP PV8 for even less ££ at Spa
SP PV8 gets my vote now.
No probs either way, as I have a couple of spare front QRs.
Mick F. Cornwall
Re: Hub dynamos for 20" wheel
Mick F wrote:Does it come with a QR?Mick F wrote:Brilliant!AM7 wrote:SP PV8 for even less ££ at Spa
SP PV8 gets my vote now.
No probs either way, as I have a couple of spare front QRs.
I got mine from Spa. Doesn't come with a quick release. It is a good bit if kit for the money though.
Whatever I am, wherever I am, this is me. This is my life
https://stcleve.wordpress.com/category/lejog/
E2E info
https://stcleve.wordpress.com/category/lejog/
E2E info
Re: Hub dynamos for 20" wheel
squeaker wrote:Likewise (except mine's an SD-8).NUKe wrote:Another vote for the sp8 .have one on the grasshopper compact and light.
So is mine ,
Mick F does the Moulton have narrow hubs ? This will determin which ones 70mm or 100 mm.
NUKe
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