Using thumb throttle for front braking ?

[Tauseef]

Hey
I wish to use the lever of thumb throttle for front braking. The main lever(with twin braking nut) will be used only for rear brake .
Will it be a good idea ?

Reason is that i have V brakes znd with this twin brake lever there will be need for brake adjustment every now and then if both front n rear are tied to single lever. In case front is separated to thumb it will gv me more freedom of braking. But i m just curious will that plastic of thumb throttle hold on n will the idea work ?

 

[HeadSmess]

you want the most power at the front, most of the dual pull levers are "self adjusting" to a degree and dont mind a bit of inequality between front and rear, a thumb lever is never going to give you the braking power you require when you really need to stop like four fingers does.

i always liked to have my dual lever set so both wheels will lock up on gravel, and will still do endo's if you jerk forward when braking hard on tarmac.

and over a year later...i still havent adjusted the brakes again. though they are starting to feel a bit sad....

 

[FurryOnTheInside]

What is the leverage ratio and the maximum cable pull length of the Thumb throttle lever?
Dual pull levers were invented for tricycles' rear brakes and I would never ever everrrr put one on a bicycle of any kind. Better to have no rear brake at all!

 

[Tauseef]

What is the leverage ratio and the maximum cable pull length of the Thumb throttle lever?
Dual pull levers were invented for tricycles' rear brakes and I would never ever everrrr put one on a bicycle of any kind. Better to have no rear brake at all!

The leverage it overs is about 2.5 inches !

What i am really worried is that in case of a little drizzle if the front wheel brale goes more than "wanted" my front tyres can skid.
And i really really like the rear brakes i actually rely more on them than the front ones.

 

[Tauseef]

you want the most power at the front, most of the dual pull levers are "self adjusting" to a degree and dont mind a bit of inequality between front and rear, a thumb lever is never going to give you the braking power you require when you really need to stop like four fingers does.

i always liked to have my dual lever set so both wheels will lock up on gravel, and will still do endo's if you jerk forward when braking hard on tarmac.

and over a year later...i still havent adjusted the brakes again. though they are starting to feel a bit sad....

Okayy i am giving them they try with both brakes conncted to lever and not the thumb thorttle.
I get it that thumb will not be that efficient for 'braking'

 

[FurryOnTheInside]

The leverage it overs is about 2.5 inches !

What i am really worried is that in case of a little drizzle if the front wheel brale goes more than "wanted" my front tyres can skid.
And i really really like the rear brakes i actually rely more on them than the front ones.

I mean how it compares to to a v brake lever. Not that I have ever measured or "googled" the ratio and pull of a v brake lever.
I would be very surprised if you can get the front to skid before the rear goes if braking effort is divided equally.
I will assert that emergency braking is done with the front. When the front brake is being applied to it's maximum effect the rear tyre has no weight or traction (on the verge of doing an endo or going OTB).

 

[Tauseef]

I mean how it compares to to a v brake lever. Not that I have ever measured or "googled" the ratio and pull of a v brake lever.
I would be very surprised if you can get the front to skid before the rear goes if braking effort is divided equally.
I will assert that emergency braking is done with the front. When the front brake is being applied to it's maximum effect the rear tyre has no weight or traction (on the verge of doing an endo or going OTB).

Its traction is comparable with the brake lever, both give about the same pull !!

My practise has always been opposite, if I ever needed to brake emergently i start with the rear brake
(Perhaps,as , years back ,once my front tyre skidded on a rainy day very very badly when i had applied only the front brake...and then i made it my second priority in applying brake)(though i apply both together now,mostly)...
I have 3 levers. Clutch, and 2brakes.
And everytime i plan on using the twin brake lever i am confused about it !

 

[Frankenstein]

If you have a twin brake that uses this type of lever system, which equals the forces evenly between the two brake cables (look at picture) then be wary of only putting a single brake cable in it, it can put bad strain on the mechanism, and also tends to lack modularity, as in the brakes just feel weak or mushy rather than responsive. You would be better using a single pull lever with a single cable.

Had this lever when I had a brake caliper break, I instantly lost almost all breaking power, it was wet, and I was heading towards a red-light, luckily I was on flat ground and I was able to grind my boot along my front wheel which slowed me enough that I could stop... Talk about scarey

 

[Tauseef]

If you have a twin brake that uses this type of lever system, which equals the forces evenly between the two brake cables (look at picture) then be wary of only putting a single brake cable in it, it can put bad strain on the mechanism, and also tends to lack modularity, as in the brakes just feel weak or mushy rather than responsive. You would be better using a single pull lever with a single cable.

Had this lever when I had a brake caliper break, I instantly lost almost all breaking power, it was wet, and I was heading towards a red-light, luckily I was on flat ground and I was able to grind my boot along my front wheel which slowed me enough that I could stop... Talk about scarey

Interestingly , it is the same as you have made in the diagram. And yes i have checked it that, with one cable attached, lever has a swayed line of action and will break away. Thats an excellent explanation and so i have attached both brakes' cables to the lever and so far its working very good.
My riding experience has also improved as no i have two levels to play with rather than three.

 

[libranskeptic]

While u guys are here, what do you think of having both v brakes and mechanical disk brakes, mainly at the front?