Man, here I am again wasting time working on this bike instead of riding it. Anywhoo -
how, in the name of all that is semi-holy or otherwise, do you run the cables for the sensors on the P3?
Up the bottom tube? cause that would look uuuuuugly and i can’t go up the seat tube and across the top. Anyone? Anyone?
Oh and are there any aero bars which will accomodate the powercontroi unit? I have my vision set up and the bars are as wide as they will go and the power control unit has to arch up a bit. Non-aero and ugly.
I should have taken this whole damn deal to the shop and paid as much as they wanted. I’ve worked on bikes for years and I think I’m done. I just want to train, thank you very much.
1.)Not on a P3 but I installed it on a track Litespeed Blade. The instructions recommended electrical tape so I used electrical tape the same color as the downtube and routed the wires from the head tube to the bottom bracket. Once you get the sensors close they are amazingly weak. You have to stick the magnet way out there and the crank one has to go about .5 mm away from the crank. Have a rear wheel sensor, not a front. Some people recommend putting the crank one upside down and on top of the chainstay but you have to test it and see if it works in that position. The other option is using glue.
2.) Same here with A700 bars. Didn’t really mind that much, just aesthetics. It’s already buffered by your hands.
I mounted my SRM sensor on my P3 by putting the crank sensor thingy on the down tube just in front of the BB with zip ties instead of the rubber ring. On the drive side of course. My cable runs on the bottom of the down tube and is covered with electrical tape which hides it very well. There are all different colors of electrical tape out there so just look around.
For the SRM computer I actually don’t use the mount they included. My solution was to use velcro with one half stuck to my aerobars and the other half on the bottom of the SRM computer so that it lies flat on the extensions. I used the industrial strength stuff for the extra adhesive to the metal. This solution depends on the width of your aerobars.
Mine isn’t perfect as the SRM computer creeps a little on bumpy roads. During an IM I might have to reposition it once or twice so it’s not bad. I’ve been using it like this for 3 years now. One alternative would be to build a little platform so that it can sit on top of your aerobars if yours are too wide apart.
My sensor is on the chainstay. The cable goes around the BB and up the trailing edge of the down tube. To put the cable on the down tube, you put it right down the middle of a length of electrical tape, then fold the tape along the length of the trailing edge so that half the width of the tape is on each side and the cable itself sits right on the edge. This probably preserves the aerodynamics better than any other method.
Like others have said, color coordinated electrical tape if you care what it looks like going down the down tube. Aero bars that work with the SRM are the Oval Concepts A900’s. There is a rectangular shaped bridge in front of the where the stem clamps that I have my SRM mounted on using a profile computer mount and a wooden dowel. Let me know if you want the details, the dowel and profile mount basically serve to make the rectangle shaped bridge round so you can mount the standard SRM clamp to it. This, honestly, is as good as the SRM gets with aerobars, I have tried almost all of them (including Vision integrated and clip on bars). The SRM sits about 3mm to the left of center, not enough to make a difference even when riding.