WANTED: Dual disk front hub

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nomorefours   1 mW

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WANTED: Dual disk front hub

Post by nomorefours » Jun 26 2018 8:02pm

Hi,

I am looking to add a second front disk to my e-bike.

I already have DNM USD-8 forks, which have caliber mounting lugs on both sides, but I need to find a hub that has disk mounts on both sides.

I have seen reference to the 'Voloci' hubs on this site, and also the US Chopper ones, but I cannot seem locate one of these, or one similar.

I already have the Gatorbrake 8 piston caliper mounted on the front LH side, so ideally I would like the RH version (mirror image) of this caliber (with bracket), but I cannot seem to locate one of these either...so I would certainly consider a different master cylinder / caliper combination.

Any help or suggestions, would be much appreciated!

Thanks,

Doug

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skeetab5780   10 MW

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Re: WANTED: Dual disk front hub

Post by skeetab5780 » Jun 27 2018 6:22am

I have those same forks but I also cannot find a dual 6-bolt iso front hub 20mm>>110mm anywhere online...

I found 1 CAD design in Google pics that's it


The Voloci only used a dual disc hub on the rear that is thru axle bolted and about 135mm wide, so it will not work

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DanGT86   10 kW

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Re: WANTED: Dual disk front hub

Post by DanGT86 » Jun 27 2018 9:17am

http://www.vectorebike.com/orders/componencts.html

This is the only place I have seen them still listed as for sale. Who knows if they actually have stock.

e-beach   100 MW

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Re: WANTED: Dual disk front hub

Post by e-beach » Jun 27 2018 9:58am

nomorefours wrote:
Jun 26 2018 8:02pm
Hi,

I am looking to add a second front disk to my e-bike.
.......
What do the side covers on you motor look like? It might be possible to pull the non break side cover and replace it with one that has a disk break mount on it. It depends on you motor type and manufacture.
Favorite Quote: "This is L.A., sugar. There is no 'over the top." --- Chris Erskine

Current build: Liahona w/ cheap front suspension and suspension seat post. Yescomusa 36v 800w generic front hub motor. 15ah Headway triangle mounted pack. Tronsung 30 amp,

Previous Build:1992 Trek Antelope 800 - Bone Crusher (no suspension) - Yescomusa 800 watt 36 volt front wheel kit. Don't do it! Get suspension!!!

2WheelsMovesTheSoul   100 W

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Re: WANTED: Dual disk front hub

Post by 2WheelsMovesTheSoul » Jun 27 2018 10:23am

I got you fam...

I already wasted plenty of time trying to track one down, this site has them and in stock.
http://www.zelenavozila.com/catalog check page 8

I wanna say it was like $96 total, showed up in 7 days and was subject to theft (taxation) at every port along the way. Actual price was $60.

With that solved. The mirrored brake caliper you want is the Tektro Auriga, originally sold for a recumbent.
tektro.jpg
tektro.jpg (12.58 KiB) Viewed 462 times
Personally I found these waaaaay overpriced for the performance (2pot) these would have provided. Get'em here:
https://www.bike24.com/p2127047.html

I eventually just bought 3 Shimano Zee 4pot calipers (with the heatsink finned pads) and fabbed my own right side caliper mounting bracket from some scrap aluminum block.
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nomorefours   1 mW

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Re: WANTED: Dual disk front hub

Post by nomorefours » Jul 17 2018 11:28pm

Thanks very much to all who provided helpful suggestions!

I finally (with help) got it all figured out...

1. Dual Disk Hub options:

http://www.vectorebike.com/uprgade.html

https://risseracing.com/store/index.php ... 0e2d5b00aa

http://www.zelenavozila.com/catalog

I ended up ordering from the last one.

2. Mirror Image calipers:

http://www.bengalperformance.com.tw/hydraulic-dot.htm

http://www.tektro.com/products.php?p=37

In the end, I found matching L&R 8 piston Gator calipers and mounting brackets, on eBay in Germany (4 and 6 piston were also made in RH and LH versions):

https://www.ebay.de/sch/i.html?_osacat= ... e&_sacat=0

NOTE Gatorbrakes are no longer in production, so pick up some extra brake pads on Bay if you go this route.

HINTS:

'Rechts' is 'RH Side' in German, and 'Links' is 'LH side'. 'Vorne' is 'front' and 'hinten' is 'rear'. Just copy and paste text into Google Translate.

I will post again once I figure out the master cylinder requirements, which I will do using proper industry standard hydraulic engineering protools (piston size is critical, relative to piston size in the calipers).

Also still needing to sort out are a hydraulic splitter, or banjo bolt arrangement to allow two hoses to connect to the master cylinder...

Almost there!

Cheers,

Doug

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