Breaks

[jhanlon110]

This seems like a fairly simple question, but I couldn't find an answer in the scooter library or the 49cc discussion threads. If it's already covered somewhere, please just redirect me.

Once I get my 2010 Qingqi up to the speed that I want, I'd like to work on my breaks. I figure my desired top speed (35-40 MPH) isn't all that fast, but add in the heavy load and it'll probably take more to stop than normal.

So what can I do to get better breaking power?

[Deleted]

I havent seen much by way of brake upgrades. finding a dual piston caliper with the longer pads ..like from a 150 might work.

[reveeen]

Break:

dictionary.reference.com/browse/break

Brake:

dictionary.reference.com/browse/brake?s=t

[90GTVert]

Like what 1FAST is saying, some scoots have larger rotors and calipers that you may be able to adapt. Some scoots have aftermarket kits available, like the Zuma for example, with some pretty hefty disc brakes. If you were really ambitious I bet you could figure out how to do dual front discs. Sorry I don't really have any details though, I've just never worried too much with brake upgrades.

[89CamminGT]

I'd have to agree with reveen.

I tried swapping brakes from a 150 to my 50, but all that would work was the master cylinder. everything else was different diameter, different spacing etc

[Deleted]

is your Quinqi a Sunny style scooter like this:



or a QM50QT-2 like this?

[jhanlon110]

Hm, apologies about the misspelling. I know it's annoying. Mea Culpa.

It's a sunny style scooter, as shown in the first picture.

[racerbugg]

even just replacing the master cylinder with on of a larger bore say 1/2'' is stock going to a 5/8'' will push more fluid and will make a more powerfull system over all. ive done this on pedicabs using a master cylinder from a street bike with dual discs. makes for a very powerfull front brake. does require a little more hand pressure but not that noticeable. and if your lucky you can get one that has the starter button and mirror mount and kill switch already on it.

[Deleted]

A Verucci Avispa 50 is a 150cc body with a 50cc engine. it has a long case 788 motor with a 13" 150 style rear wheel and a long drive shaft for the right side rear shock. while they dont have rear disc brakes, the bracket on the right rear for that shock has a place where a caliper can be mounted if drilled and tapped. The wheel also has threaded journals where a rotor can be mounted. everything is there to pretty easily convert it to rear disc brake. this is what i had planned for my stroker motor build especially since I just got the last black/silver 2011 model scoot like mine which has dual rear shocks.
Anyway, if you found a wrecked one of those Verucci Avispa 50 scoots or something that would be a good foundation for a build with rear disc brake...and your stopping power would be greatly improved.

Also I have seen 2 setups on the front of these sunnys. One of them the pads are not as wide and they dont cover the entire width of the rotor...so look at your rotor close...is there a ring around the inside of the friction area that the pads are not grabbing? if there is you can switch the caliper side shock...and caliper itself to the other type to get more braking power on the front too.

Some 150s use 10" wheels and have a dual piston caliper and much longer pads. I suppose it would be possible to swap your forks to that type and use the dual piston caliper for greater stopping power since those long pads for the dual piston caliper cover a much greater surface area.

I just swapped the forks on a front drum brake sunny scoot with that of a disc brake sunny scoot. the stopping power is obviously much greater....so it is possible to switch one 10" wheel front end with another...but i have never done it between a 150 and a 50. Since some 150s do use the same front wheel as a 50 its theoretically possible.

[Deleted]

Here you can see the cable for the old drum brake and speedo cable. This was a direct bolt on swap since they are both sunnys and use the same tripple tree. If you do swap your forks be careful to not break one of the bolts off in the tree like i just did o.O

Attachments:

[jmkjr72]

first thing would be to upgraded to a braided stainless steel brake line

then from there a larger disc or larger bore master or a better caliper
but you will have to figure out what works for you

[Deleted]

Here i am discussing putting 150cc forks on a 50. This would give you a much greater range of brake options since on a scooter the brake caliper bolts to the fork....and there are aftermarket 150 forks and brake setups on various sites.

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