onder
Joined Oct 2010
2K Posts | 20+
The Fens.
Doubt it.
Many have fitted the master cylinder from a Ducati 1098/848/999/749,etc with great success.(Its 11mm,btw)Its also the same one on some Falco's.
A different brake line is required as the banjo bolt is on the top rather than one end.
Many have fitted the master cylinder from a Ducati 1098/848/999/749,etc with great success.(Its 11mm,btw)Its also the same one on some Falco's.
A different brake line is required as the banjo bolt is on the top rather than one end.
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Joined Sep 2013
667 Posts | 15+
Doncaster
Joined Oct 2010
2K Posts | 20+
The Fens.
I think you will get more hydraulic pressure with the 11mm.Sounds a bit daft I know,but the 13mm will shift more fluid but with less pressure.
I know single disc bikes have smaller master cyls than those with twin disc.
Think of it like your garden hose.Turn on the tap to let the water flow,...now squeeze the end with your thumb and watch the water come out faster and further.
I know single disc bikes have smaller master cyls than those with twin disc.
Think of it like your garden hose.Turn on the tap to let the water flow,...now squeeze the end with your thumb and watch the water come out faster and further.
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So what your saying is a Moto GP bike uses o.oooo1 mm bore master cylinders,:lol I have fitted larger M/C on a few bikes in the past and you notice it gives stronger brakes,try it and report back don't listen to the Dorris :yes
Joined Oct 2010
2K Posts | 20+
The Fens.
I'll stick by what I said in the earlier post.
There is a chart somewhere on the net that gives the optimum m/cyl size for the caliper piston size.Cant find it at the mo.(Loads of car stuff)
This write up explains it all,...
http://www.customfighters.com/forums/showthread.php?t=56704
There is a chart somewhere on the net that gives the optimum m/cyl size for the caliper piston size.Cant find it at the mo.(Loads of car stuff)
This write up explains it all,...
http://www.customfighters.com/forums/showthread.php?t=56704
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Joined Sep 2013
667 Posts | 15+
Doncaster
Keith & Blade,
I had a look on the AF1 site last night, and they stated that Aprilia had fitted 11mm & 13mm at different times during the production life of the Vtwin. They recommend that the 11mm is their choice of rear master cylinder, but didn't give any specific reason for this choice.
Gray
I had a look on the AF1 site last night, and they stated that Aprilia had fitted 11mm & 13mm at different times during the production life of the Vtwin. They recommend that the 11mm is their choice of rear master cylinder, but didn't give any specific reason for this choice.
Gray
Joined Jul 2008
1K Posts | 26+
Keith is correct, the smaller the diameter m/c bore, the greater the pressure will be at the slave.
The smaller bore means less fluid is pushed, therfore a greater lever movement is required.
A larger dia. bore m/c will reqire more pressure at the lever (albeit with less travel) to get the same level of braking power as a small dia m/c.
Simples.
The smaller bore means less fluid is pushed, therfore a greater lever movement is required.
A larger dia. bore m/c will reqire more pressure at the lever (albeit with less travel) to get the same level of braking power as a small dia m/c.
Simples.
That theory is not strictly true as it also depends on leverage ratio ,generally and I have done this on track bikes and motos I have built a bigger master gives much better braking :megaphone
Joined Sep 2013
667 Posts | 15+
Doncaster
Ok guys, nice counter arguments........but with regardsto my 03 plate T specifically..........
What's best 11mm or 13mm taking into account standard pedal etc. ??
Gray :thumbup
Joined Oct 2011
4K Posts | 66+
COUNTY DURHAM
I would stick with the 11mm :yes but there again WTF do I know :dunno I ride a KTM :whoop
Joined Nov 2014
875 Posts | 38+
Cambridgeshire
Joined Oct 2011
4K Posts | 66+
COUNTY DURHAM
after 3 years on the Tuono I don't use a back brake anymore, however its nice to know I have one if ever required to use it
So if you want to up grade your brakes you would fit a smaller master cylinder :dunno