 17mm or 19mm |
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| ynotdd |
 Feb 26 2004, 03:42 PM
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#1
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Member  Group: Members Posts: 156 Joined: 13-January 03 From: plainview, NY Member No.: 140  |
pro's and cons of a 17mm or a 19mm mc. I know there was talk about it but dont remmber the out come (IMG:style_emoticons/default/spank.gif)
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| Dave_Darling |
Feb 27 2004, 01:35 PM
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#2
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914 Idiot Group: Members Posts: 15,192 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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QUOTE(7391420 @ Feb 27 2004, 10:33 AM) -the 19mm does reduce the pedal travel a bit, but not a huge difference. 25% less travel. QUOTE -the pedal feels firmer, which I like 25% firmer? If not, then there was air in the system which you got out when you did the replacement... QUOTE -you can notice that you need to step a bit harder on the pedal to get the brakes to really bite, but also not a big difference, and once again, the pedal does feel more firm. 25% harder to get the same braking effect. (See a pattern here?) You reduce your "hydraulic advantage" over the calipers pistons by doing the swap. By 25%, the difference in area between 17mm and 19mm. It has the same effect as moving the pivot on the brake pedal upward, shortening the pedal arm by 25%. QUOTE -I just unscrewed the old sensor off the old MC and put onto the new one...no problems so far, but maybe DD is right and so I'll go back and put the sensor that was on the new one back in. If the switch works, and it ain't leaking, leave it alone. Why mess with it and take the chance of introducing air back into the system again? --DD |
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Posts in this topic
ynotdd 17mm or 19mm Feb 26 2004, 03:42 PM
phantom914 OK. I don't have a 914 yet so I don't even... Feb 26 2004, 03:49 PM aufaber 19mm with stock brakes feels kinda like you are pr... Feb 26 2004, 03:54 PM Dave_Darling Either one works fine. The difference is mostly i... Feb 26 2004, 03:55 PM ArtechnikA Aaron Cox i think the 19 mm one has only one electrical conn... Feb 26 2004, 06:15 PM Dave_Darling That's the switch installed in the MC, not the... Feb 26 2004, 07:24 PM davep The 411 with the same front brakes as the 914 and ... Feb 27 2004, 08:19 AM ArtechnikA 7391420 I just went through this last month, I did get the... Feb 27 2004, 12:33 PM davep Yep, "S" , "A" , and "M" calipers all use 48 mm pi... Feb 27 2004, 12:35 PM
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