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SP Dynamo SV-8 Front Hub to Suit Brompton - 28 Hole

Customer Reviews (1)
4 / 5| Write your review
£84.99
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Details
Product Reviews (1)
Questions & Answers (7) Q & A
Details
74 mm Rim Brake Dyno Hub - Ultra Small Dynamo Hub

SP Dynamo's hubs are not only the lightest, but also the most efficient at converting cyclists efforts into electrical energy. The lightest model SP Dynamo have weighs in at an unprecedented 360g while attaining an unmatched efficiency of 72%. These dynamo hubs are premium products designed and engineered for the most demanding cycle tourists, commuters and enthusiasts!

Efficient Output - An advanced dynamo device with more efficient and effective output, is built inside the hub. The output from this dynamo hub is much more stable and offers sufficient power to the lights

Unique and Avant-Grade Shape - Totally different from current dynamo hubs. Avant-grade concepts are involved into SP Dynamo's design elements. This dynamo hub is not only functional, but also upgraded to contemprary texture

Made in Taiwan - For quality concern, we definitely insist to manufacture in Taiwan

- STVZO Standard Achieved
- Water Resistant
- OLD 74 mm
- Spoke Holes: 28H
- QR Type (7.9 mm)
- 6V 3W
- For 20" wheels (suitable for Brompton)
Specification
Downloads
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Product Reviews (1)
Overall Product Rating 4 / 5
Sv8 Dynohub To Suit Brompton
By
19 Jul 2015
4 / 5
I recommend this product
ProsLightweight, efficient
Built this SP dynohub into a Brompton 2013 rim I had spare using spokes I already had. 150 mm on the terminal side and 152 mm spokes on the other side, two cross spoking.

I had to add a thin washer to get clearance between spokes and the Ti fork on one side (I think the terminal side). This might not be an issue with a steel fork.

A way round this would be to spoke radial, with all spoke heads on the outside of the flange, but not sure if this is permitted on SP hubs (some hub flanges are not designed for radial spoking).

In use, the added washer isn't an issue. So far this dynohub has delivered reliable fit and forget lighting with negligible drag.

The whole system (B&M Cyo, Line Plus, brackets, cables and the difference between ordinary hub/dynohub) weighs less than the battery system it replaced.
Questions & Answers (7)
Spoke Pattern/Fork Clearance
By
26 Apr 2016
Hi, I bought this hub and 150/152mm spokes intending to build a wheel using a 2 cross pattern on a standard Brompton rim. It looks there is not enough clearance on the left hand side so that the elbows out spokes will contact the fork leg (not particularly good design?!?). I haven't built it yet.

1. Are these hubs OK for radial spoking?

2. I don't really like radial spoking anyway, so will a 1 cross pattern work with all the spokes the same way? What length would I need if this works?

Thanks.

SJS Customer Service:
Hi,

These hubs cannot be used with a radial spoke pattern unfortunately. We always build these with a 2 cross pattern ourselves, so there should not be any issues with clearance once built. With a 1 cross pattern the spoke elbows would still sit just as far out anyway.

Thanks.
Which Qr Skewer For This Hub In A 1987 Dahon Upgrade?
By
28 Jan 2015
I see that you already advised someone to buy the Schmidt Allen key quick release (SJSC part number 19064) to go with this hub. I have obtained a pristine vintage 1987 single speed coaster brake Dahon with 74mm front dropout and I want to upgrade my front with an SJS wheel build using this hub and a Sun CR18 16" (349) 28h rim. I already realize that in going from an original factory installed 16" (305) wheel to the 16" (349) wheel that I can have potential frame clearance (going to use a Marathon Plus tire) issues, but I am prepared for that, and will also have a new build of a 16" (349) wheel for the rear as well. Do you recommend the same QR skewer for me with this hub on my bike as you did for the guy with the Brompton in answering his question, or would you recommend either the Brompfication Titanium Bolt On Front Skewer (SJS Cycles Part Number: 34629) or the Schmidt Front Skewer for Dahon 74mm (SJS Cycles Part Number: 23926) instead, or do I have a choice among more than one of the 3 skewers?
SJS Customer Service:
Hi,

In reality any 3 of those would be suitable for use with this hub. As it is for fitting to a Dahon I would recommend the Dahon specific one unless you wanted to go for the flash lightweight option then obviously go for the Brompfication option. There is currently no other options, but we we looking to stock an actual quick release lever in the 74mm OLN, the same as the one supplied with the Capreo hub.

Thanks.
What Spokes To Use For Installation.
By
12 Jun 2014
Hello. I would ilke to install the SP Dynamo SV8 Front Hub on my brompton. What information do I need to order the right spokes. I do not really know what rims are on my front wheel (what measurements should I take?).

Is it also possible to connect a rear and front light together on the front hub?
SJS Customer Service:
Hi,

Most online spoke calculators require the ERD of a rim to work out the spoke lengths, others use slightly different systems. If you can let me know which Brompton rim it is you have then I should be able to give you an idea of the spoke length needed. Yes, rear lights can piggy back off of most front lights.

Thanks.
Hub Dynamo For Brompton
By
10 Feb 2014
SP Dynamo SV8 Front Hub to Suit Brompton 28H

Do you have a ready built front wheel with the following hub ? Cost pls
SJS Customer Service:
Hi,

I'm afraid we don't have any wheels pre-built using this hub, we can make you up a custom set if you wish though.

Thanks.
Hi, I Wish To Build This Hub On A Brompton Old Rim.
By
18 Jan 2014
SJS Cycles Part Number: 720H28
Could you tell me the spokes length and part num on your site?
10X
SJS Customer Service:
Hi,

Using an online calculator I've worked out the best I can what sizes you need. These are 155mm for the drive side and electrical connecter side and 156mm for the non drive side. The 155mm length is available in Brompton's own spokes and is our part number 31253, as this hub is however not originally used by Brompton the more unusual 156mm length will require standard spokes.

Thanks.
Which Length Spokes Please?
By
23 Nov 2013
Hello,
I want to command this HUB (SJS Cycles Part Number: 29698SIL Manufacturer Part Number: HUSPS78S) together with the
rim=Brompton 16 x 1 3/8 (349) Standard Drilled Double Wall Rim 28H (SJS Cycles Part Number: 31191Manufacturer Part Number: QRIM28STD).
Which spokes do I have to command?
Thanks!
SJS Customer Service:
Hi,

Because this isn't a hub that Brompton actually specs it means that not all of the correct sizes are available in Brompton's own spokes. Also because the hub isn't evenly spaced due to the electrical terminals it means that the spoke lengths are different for each side. I've worked them out as best I can and got a length of 151mm for the non-drive/ electronic connector side and 153mm for the drive side.

Thanks.
Anything Else Do I Need To Install On My Brompton
By
09 Oct 2013
Please give me an advice
SJS Customer Service:
Hi,

You'll need a skewer as these hubs don't come with them, the only ones we have in the Brompton 74mm size is the Schmidt Allen key quick release, SJSC part number 19064. This should be all you need as all of the cabling and connecters come with their front lights.

Thanks.