Originally Posted by
Stiggosaurus
Hey guys,
Started building my MT410 this evening and I'm quickly approaching the shocks. I've seen that the TKR8702 aluminum shock caps are a really popular upgrade (understandably so). I've only ever built buggies with Tekno, so every shock of theirs I've ever built has used emulsion, which means I'm not used to dealing with bladders. When using these caps, how are people building their shocks? Tekno give instructions for various damper types (vented, non-vented, and emulsion), but it's unclear to me if I otherwise build the shocks exactly how described in the manual. I'm probably overthinking this, but some guidance on what to do here would be appreciated.
I run the 8702 caps on my MT and ET, non-vented bladder setup. I build them per the ET48 2.0 instructions on page 19 of the ET48 2.0 manual. Super plush after many packs. Fluid stays pretty clean too.
Here are the steps:
Step 1. Prepare caps by inserting bladders. Also at this time, install the small TKR8725 o-rings onto the TKR1248 screws. Do not install the TKR1248 rebound screw into the shock cap during this step.
Step 2. Extend the shock shaft all the way down. Fill the shock with oil until the body is approximately 90% full.
Step 3. Slowly pump the shock shaft up and down 3-5 times to release air bubbles from underneath the piston.
Step 4. Let the shock rest vertically with the shock shaft fully extended for five minutes or until all the air bubbles have released. After the air has escaped, top o the shock with oil (about 1-2mm below the top). If you overfill the shock, it won’t hurt performance, it will just spill out and make a little bit of a mess.
Step 5A. Push the shock shaft into the shock body about halfway (about 1” or 25mm of the shaft exposed) to set a base rebound. Pushing the shaft in further will decrease the base rebound and pulling the shaft out more will increase it. Be careful to not position the shaft too far out or too far in because it will hydrolock or suck the bladder into the body during use. Final rebound will be set in Step 6.
Step 5B. Place the cap on the shock and slowly screw down about half way. Oil will start to ooze out of the bleeder hole on the side of the shock cap. Hold the cap and continue to fully secure it by slowly turning the shock body. The shock will continue to bleed oil. Wipe excess oil from the shock once the cap is fully tightened down.
Step 6. Set your final rebound by holding the shock shaft in the desired position and installing the small rebound screw assembly. Fully extending the shock shaft and installing the screw will produce the maximum amount of rebound. Fully pushing the shaft into the shock body and installing the screw will produce the minimum amount of rebound. You can now tune your rebound quickly by repeating this step.