Woosh CD Sport Disc Brakes

Is there anyway i can improve the Zoom disc brakes on my recently purchased CD Sport, especially the front brake, i have adjusted them as in the Woosh instructions, but there still not to good, i'm not expecting Hydraulic performance, and understand there only very basic disc brakes, the old rim brakes on a very very old Raleigh i have are far better, and that bike is at least 30 years old. Other than that the bike is good.

you can replace the Zoom caliper with a tektro Novela caliper from Woosh for about £15, a bit better than Zoom, or go hydraulic

http://www.ebay.co.uk/itm/2014-AVID-DB-1-DB1-MTB-Hydraulic-Brake-Set-Front-and-Rear-Black-/191176390575

Put only one in, you need to keep the other one for the brake sensor.

It's not worth messing about with it. Get yourself a hydraulic brake. You can get them new for £35 or used for a lot less. It's a simple swap. Once you've tried hydraulic disc brakes, there's no way back.

 

http://www.ebay.co.uk/itm/SHIMANO-HYDRAULIC-FRONT-DISC-LEFTHAND-BRAKE-LEVER-CALIPER-BL-M445-BR-M446-/201131871110?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2ed464cb86

 

http://www.ebay.co.uk/itm/406365-6-New-Deore-M615-DISC-BRAKE-Hydraulic-Brake-Set-Variable-Item-/261554611796?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item3ce5dea654

 

http://www.ebay.co.uk/itm/Avid-Elixir-5-Front-Disc-Brake-in-Black-/121392991346?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item1c43960c72

Is there anyway i can improve the Zoom disc brakes on my recently purchased CD Sport, especially the front brake, i have adjusted them as in the Woosh instructions, but there still not to good, i'm not expecting Hydraulic performance, and understand there only very basic disc brakes, the old rim brakes on a very very old Raleigh i have are far better, and that bike is at least 30 years old. Other than that the bike is good.

The pads become easily contaminated especially if a spray oil has been used, perhaps on the chain and the over spray has drifted.

You could try taking them out and give them a very careful flat rub on medium abrasive paper on a flat surface which may help but not for long if they have been "oiled".

Maybe buy a new set and try them before you go any further but make sure the rotor/disc is really clean before you fit them.

Dave.

Just seen d8veh's post and he's probably right, if you can get hydraulics so cheaply it's not worth trying new pads though it costs nothing to try giving the existing ones a clean etc.

Dave.

Thing is these Zoom's really are rubbish brakes though, even when brand new and just bedded in. That's why Woosh have changed them on the newer models.

It's not worth messing about with it. Get yourself a hydraulic brake. You can get them new for £35 or used for a lot less. It's a simple swap. Once you've tried hydraulic disc brakes, there's no way back.

 

http://www.ebay.co.uk/itm/SHIMANO-HYDRAULIC-FRONT-DISC-LEFTHAND-BRAKE-LEVER-CALIPER-BL-M445-BR-M446-/201131871110?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2ed464cb86

 

http://www.ebay.co.uk/itm/406365-6-New-Deore-M615-DISC-BRAKE-Hydraulic-Brake-Set-Variable-Item-/261554611796?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item3ce5dea654

 

http://www.ebay.co.uk/itm/Avid-Elixir-5-Front-Disc-Brake-in-Black-/121392991346?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item1c43960c72

 

This looks a good option , not as expensive as I thought, and maybe within my capabilities. How would I go on with the sensor cables to the brake leavers, I would imagine I would still need to have the motor cut on braking.

Didn't trex suggest you only fit the front one and leave the back one as standard with the brake cut out lever in place?

Didn't trex suggest you only fit the front one and leave the back one as standard with the brake cut out lever in place?

Yes he did, just thought it best to fit the pair, I just looked at disc brake sets for e bikes, ouch..very expensive. Will look into maybe just one brake for now. Thanks

There is another thread just up the page about converting a bike which goes into the issue of cut outs with hydraulic brakes. It's a bit complicated apparently....

 

You only really need the front brake though. With the extra weight of e bikes they're more like small motor bikes in that regard where most of the braking is done on the front wheel. As long as I shift my weight rearwards when I brake hard going downhill it's fine.

It's the front brake that does all the stopping (if your brakes work properly), so just upgrade the front to hydraulic leaving the back one with the sensor. You only need a sensor on the back brake.

Ok.. I will just do the front brake, am i best to get to get a set which includes the brake disc as well, and are mounting holes standard on all forks and callipers.

There's all sorts of adaptors to fit different calipers to different forks and discs. If you get any of the ones I linked to above, they bolt straight on without adaptors. In the worst case you might have to put some 6mm washers under the caliper to lift it up a bit if the disc touches the top of the caliper. Your disc will be OK - no need to change it. When you fit the new caliper, leave the bolts loose, then hold the brake on while you tighten the bolts. This will centralise and align the caliper.

I have been looking at quite a lot of you Tube clips on fitting Hydraulic brakes tonight, don't get me wrong i do appreciate all the advice but it looks a bit fiddly to me and i would have to get the bleeding stuff as well. I know the Zoom brakes are very poor, and wonder if a pair of Avid mechanical brakes would be an alternative, fitting looks straight forward and i still have the sensor cables connected.

You don't have to do any bleeding. Two screws for the caliper and one screw for the lever is all it takes to fit one. I think you've been looking at the wrong video.

I have been looking at quite a lot of you Tube clips on fitting Hydraulic brakes tonight, don't get me wrong i do appreciate all the advice but it looks a bit fiddly to me and i would have to get the bleeding stuff as well. I know the Zoom brakes are very poor, and wonder if a pair of Avid mechanical brakes would be an alternative, fitting looks straight forward and i still have the sensor cables connected.

I also had similar thoughts to yours before I got hydraulics, now I wouldn't have anything else.

Unless damaged they may never need bleeding, how many times do you bleed car brakes these days?

Dave.

Thanks for all the advice, after much thought I think im going to stick with mechanical brakes, and buy either a pair of Avid BB5 or BB7 calipers from ebay, may get new discs if needed. I should the be able to keep the original Woosh levers with sensor cables. More than likely a Ebay purchase, tried Halfords this afternoon, no luck.

A complete waste of money, but it's your choice!

BB5's are 'Orrible.

Want to upgrade my mechanical 160mm disc on my Wisper to hydraulic and came across this on Ebay. What am I missing in the advert? Seems too cheap.

 

http://www.ebay.co.uk/itm/XTECH-Mountain-bike-Hydraulic-Disc-Brakes-160mm-180mm-203mm-rotors-/281337226588?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item418101655c

Want to upgrade my mechanical 160mm disc on my Wisper to hydraulic and came across this on Ebay. What am I missing in the advert? Seems too cheap.

 

http://www.ebay.co.uk/itm/XTECH-Mountain-bike-Hydraulic-Disc-Brakes-160mm-180mm-203mm-rotors-/281337226588?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item418101655c

 

If you select the product you want the price goes to about £35.

I must have had a glitch on my machine because it wasn't updating the price.

BB5's are 'Orrible.

In what way, most of the reviews are good for both 5's & 7's. They must be better than the awful Zoom discs I have now. I want to keep it mechanical, that way I keep the same levers and sensors. Yes Hydraulic are probably better, I think the mecanicals better for me, and easier to fit to front and back.

the BB5 is much better than the Zoom, repplacing the Zoom with the BB5 is very straightforward, it's a 10 minute job.

But hydraulic brakes are miles better and not very difficult to fit, extra 10 minutes or so.

You push the rubber grip off the handlebar with two thumbs (this is the most difficult bit), undo the 5mm allen bolt from the old brake handle, unplug the brake sensor cable, you can now remove the old brake handle. Then fit the new hydraulic handle and caliper like you would with the BB5.

You push the rubber grip off the handlebar with two thumbs (this is the most difficult bit),

 

Trade trick to make it easy.

 

Push a long thin screwdriver blade along in between the rubber grip and handlebar. Lean the bike and introduce a few drops of water into the cavities formed alongside the blade. Then rotate the screwdriver, making the blade roll around the bar circumference, breaking the seal. The grip will then easily twist and slide off the handlebar since water is a good lubricant for rubber.

 

To replace when dry, moisten the inside of the start of the rubber grip with rubber solution from your puncture repair outfit, then immediately slide the grip on in one swift movement. It will quickly seal and stay fast.

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