V brake with Skid Control!?
Re: V brake with Skid Control!?
So ............... why does this H M L thing exist?
Either V brakes are a good idea, or they're not.
Give me calliper brakes any time.
Either V brakes are a good idea, or they're not.
Give me calliper brakes any time.
Mick F. Cornwall
Re: V brake with Skid Control!?
The Dia Compe VC-733 and the Dia-Compe MX-2 SEEM to be the same brake although its not sold with the anti-skid any more
See what you think ... hey .. you could even get it in red![Smile :-)](./images/smilies/icon_smile.gif)
If you click the "silver front" brake below you can see its even marked Dia Compe VC-733 so just buy a new brake without the silly anti-skid plate ?
https://www.tredz.co.uk/.Dia-Compe-MX-2 ... LkQAvD_BwE#
See what you think ... hey .. you could even get it in red
![Smile :-)](./images/smilies/icon_smile.gif)
If you click the "silver front" brake below you can see its even marked Dia Compe VC-733 so just buy a new brake without the silly anti-skid plate ?
https://www.tredz.co.uk/.Dia-Compe-MX-2 ... LkQAvD_BwE#
Re: V brake with Skid Control!?
It may be an after market addition to simulate the Shimano servo wave action levers.
https://www.mtbr.com/threads/servo-wave-action.716902/
https://www.mtbr.com/threads/servo-wave-action.716902/
At the last count:- Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X3, Raleigh 20 stowaway X2, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840 ![Very Happy :D](./images/smilies/icon_biggrin.gif)
![Very Happy :D](./images/smilies/icon_biggrin.gif)
Re: V brake with Skid Control!?
Useful to know.zenitb wrote: ↑9 May 2021, 12:19am The Dia Compe VC-733 and the Dia-Compe MX-2 SEEM to be the same brake although its not sold with the anti-skid any more
If you click the "silver front" brake below you can see its even marked Dia Compe VC-733 so just buy a new brake without the silly anti-skid plate ?
However, my friend is used to the feel of the brakes and has no problem with their stopping power. He just thought that the lever travel needed investigating.
OTOH, I wanted to know if the H M L markings meant the "bite point" could be adjusted. That remains to be answered.
Re: V brake with Skid Control!?
I noticed this on a 1998 Saracen mountain bike of my brother's, 'Dia-Compe Power Control' , it looks like they are doing the same adjustment at the handlebar lever on this one.There's a little toggle that rotates possibly (second picture), note H (for high (?) in first picture), I didn't mess with them.
I've never noticed the need for this on my V brake bikes, you notice the lessening of power when going from V's on a flat bar to V's on drop bar (same bike with correct pull levers). I like V brakes, pretty fuss free.
I think that's an allen key adjuster for spring tension to centre the brake in the last picture. Dia-Compe Versa Control 747 calipers.
Edit , I note that the allen bolt on the caliper had L-H written on it too (similar to the O.P's), after clicking to enlarge the picture!
I've never noticed the need for this on my V brake bikes, you notice the lessening of power when going from V's on a flat bar to V's on drop bar (same bike with correct pull levers). I like V brakes, pretty fuss free.
I think that's an allen key adjuster for spring tension to centre the brake in the last picture. Dia-Compe Versa Control 747 calipers.
Edit , I note that the allen bolt on the caliper had L-H written on it too (similar to the O.P's), after clicking to enlarge the picture!
Nu-Fogey
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Re: V brake with Skid Control!?
The power control lever is a simple mechanical advantage adjustment. Potentially useful, especially if you are mixing and matching different calipers front and rear.
The skid control on the v-brake is different and largely acts like those power modulator noodles with a spring inside, introducing sponginess into the system in an attempt to lessen the likelihood of inexperienced operators locking the front wheel. Largely a bad idea I'd say.
It's hard to see clearly but it looks like the h/m/l adjustment on the skid control is supposed to change how much sponge is added to the feel/power application once the pads have contact with the rim. I doubt that it would adjust the initial bite point.
I think it was a concern back in the day with the 'insane' power of new v-brakes that people wouldn't be used to control the power on tap and so skid control/modulators came out of that. Still used on kids bikes where it makes sense somewhat.
The skid control on the v-brake is different and largely acts like those power modulator noodles with a spring inside, introducing sponginess into the system in an attempt to lessen the likelihood of inexperienced operators locking the front wheel. Largely a bad idea I'd say.
It's hard to see clearly but it looks like the h/m/l adjustment on the skid control is supposed to change how much sponge is added to the feel/power application once the pads have contact with the rim. I doubt that it would adjust the initial bite point.
I think it was a concern back in the day with the 'insane' power of new v-brakes that people wouldn't be used to control the power on tap and so skid control/modulators came out of that. Still used on kids bikes where it makes sense somewhat.
Re: V brake with Skid Control!?
Thanks gregory, that's interesting.gregoryoftours wrote: ↑9 May 2021, 12:08pm The power control lever is a simple mechanical advantage adjustment. Potentially useful, especially if you are mixing and matching different calipers front and rear.
Nu-Fogey
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Re: V brake with Skid Control!?
It's similar on many different types of lever, like Avid speed dial models and Shimano levers like the ones up-thread. Many fairly cheap brake levers have two interchangeable positions for the cable anchor, often labelled 'v' and 'c' for v-brakes or cantis. Some really cheap ones have no adjustment, but 2 holes in the lever and the cable yoke is riveted into the hole that gives the cable pull intended for the type of brake.colin54 wrote: ↑9 May 2021, 5:16pmThanks gregory, that's interesting.gregoryoftours wrote: ↑9 May 2021, 12:08pm The power control lever is a simple mechanical advantage adjustment. Potentially useful, especially if you are mixing and matching different calipers front and rear.
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Re: V brake with Skid Control!?
Actually I'm not sure if the 'power control' on your levers refers to the ability to adjust the mechanical advantage, although it does have that feature. I have some dia-compe power control levers that have no user adjustment of mechanical advantage/cable pull. Instead the cable anchor has a roller attached that runs along a profiled ramp inside the lever to give variable mechanical advantage over the range of throw of the lever. It's a similar mechanism to Shimano's 'servo wave' technology, I think.
Re: V brake with Skid Control!?
There's a time-line of Dia-Compe / Cane Creek components here at Mombat Bicycles.
The O.P's brakes VC733 are mentioned in the 1999 product summary 'Skid Control mechanism (like anti-lock brakes)' it says.
The ones on my brother's bike are mentioned in the 1997 summary (it's a 1997 bike not '98 as I mistakenly wrote up-thread).
PC(Power Control)-7 EXA......'dual leverage adjustment for LAC or canti'.
http://mombatbicycles.com/MOMBAT/BikeHi ... Creek.html
There's a some new sets of these levers for sale on ebay with a tantalisingly incomplete couple of bits of the original instructions on show.
They seem to be slightly at odds with the summary I quoted from in the link. https://www.ebay.co.uk/itm/253749315934 ... SwhOpbSGZ6
The O.P's brakes VC733 are mentioned in the 1999 product summary 'Skid Control mechanism (like anti-lock brakes)' it says.
The ones on my brother's bike are mentioned in the 1997 summary (it's a 1997 bike not '98 as I mistakenly wrote up-thread).
PC(Power Control)-7 EXA......'dual leverage adjustment for LAC or canti'.
http://mombatbicycles.com/MOMBAT/BikeHi ... Creek.html
There's a some new sets of these levers for sale on ebay with a tantalisingly incomplete couple of bits of the original instructions on show.
They seem to be slightly at odds with the summary I quoted from in the link. https://www.ebay.co.uk/itm/253749315934 ... SwhOpbSGZ6
Nu-Fogey
Re: V brake with Skid Control!?
On my touring bike - with standard drop bar levers - I use v-brakes with travel agents. The combination works well.rogerzilla wrote: ↑8 May 2021, 1:00pmRoad bikes don't use V-brakes because it's hard to make a good drop bar lever with twice the normal cable pull.
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Re: V brake with Skid Control!?
That's what centre-pulls were for!