RoadTecAllez

Allez: Stem And Handlebar

For the rebuild-up I decided to change the stem, handlebar and later the seat post. Reason for this is just cosmetic… The new flat black from ritchey look ultra nice and matches best with the new carbon and titanium parts. One part of this are the new carbon spacers. Those are also necessary because of the new fork length.

These tools are needed:

  • Bike Stand
  • 4mm Allen
  • 5mm Allen
  • Torque Wrench
  • Anti Seize
  • Loctite 243

Service/Spare Part:

  • Ritchey WCS C220 84D Stem
  • Ritchey WCS Evocurve Handlebar
  • Ritchey WCS Carbon Spacers
  • Custom Titanium Grade5 Bolts and Washers

Post as guidance? No warranty in ANY case of damage!

Time to keep going on… First is the weight check of the new spacers: 6,3 grams.

After that the new stem. As said before this will be a “radical”  rebuild. Everything is about weight. So the new stem and handlebar will be tightened by titanium bolts which saves 8,5 grams (stem + original bolts/washers: 128,1 grams, stem + titanium bolts/washers: 119,6 grams).

After the numbers now for the assembly. Two 10mm spacers under the stem and one on the top. This picture looks familiar, right? The bolts are now installed in dry condition because of the alignment. Later on they will be “glued” with loctite.

The ahead cap will be tighten with a titanium bolt coated with anti seize. Remember the session about electrolysis and corrosion? The preload of the bearings will be set later.

Now for the handlebar,weight on this:  265,1 grams. Same here, dry installation of the bolts.

Now it is time to install the wheels and set it on the ground. After that the first thing is to tighten the ahead screw to preload the headset bearings (just hand tighten), then it is possible to align the stem and the handlebar. Everything in the right position? Then hit every bolt a little more than hand tighten to secure the alignment.

Now loctite and the correct torque. Stem first – maximum torque is 5NM. Make sure you tighten the bolts evenly distributed. 

The final step is the handlebar. Same torque on those guys (5NM) but in a criss-cross pattern!