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trialscrab

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trialscrab last won the day on July 31 2021

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  1. I don't know what was in it. I'd guess it was just the stock royal blood unless Jitsie bleeds them with something different at the factory before shipping them out. These are the Jitsie Race levers/master cylinders with HS33 slaves. The bike was purchased second-hand but was maybe only used a year with a handful of rides. In any case, they seem to be working now. I honestly don't know what exactly changed. Maybe the lube finally worked its way in. Maybe an air bubble in the crossover floated off elsewhere. Maybe the new bolts and a more precise readjustment of the calipers did something. I rode the bike today, had no issues. Watched the pads go in and out multiple times and they are now both on point. I'll keep an eye on them and report back if anything changes. Thanks everyone for your help and guidance!
  2. So, definitely not the clamp. I took the right rear brake off, took the pad off, and watched the piston go in and out. It's going slow unclamped, but only the right rear. The left rear (where the brake the hose goes to first) moves quicky and with almost no delay to the lever squeeze -- it's practically instantaneous -- and on-point throughout it's stroke. The right on the other hand has a delay on the release. I can squeeze the lever in and then drop it, and I hear the "thud" of the lever well before the piston goes back to its resting state. I cleaned it and lubed it with a silicone spray, pumped the handle several times, then wiped all down and it still goes slow. I'd say it's maybe marginally better than before. It almost seem like some kind of pressure difference or blockage on the return of the piston. Thoughts?
  3. I bought the bike second-hand, but it's relatively new. I did have a sticky piston in the lever. That was solved - it glides like butter now. It's just the rear slave. I was under the impression that torquing down the brake clamps shouldn't affect piston movement in the slave, but I swear it has happened before (the rear wheel axle moved on a static hop and I had to re-adjust the rear and re-align the wheel and brakes and remember having to untorque the clamps to get it to move freely). Maybe the slave piston is indeed sticking. It seems to only be one side as far as I can tell. I'll go through the process you outlined and I'll report back. What lube do you recommend using? Thanks!
  4. I find that, for a street trials bike, sinking my butt down lower alleviates pressure on the back. The taller and straighter I get, and the longer I stay there, the worse it is on my back. I noticed I was trying to stand straight up when I started as I was watching people ride on a comp trials bike and trying to emulate that on my street trials bike -- doesn't work the same -- you're far more upright on a comp trials bike. Also letting off the back brake every time I push down on the pedals for a correction hop -- this alleviates the lever on your back caused by the short bike. On a long comp bike, you can more easily back hop with the back brake locked without feeling it in your back as much. I've found that trying to get my head just above my bars (if looking straight) while hopping on the rear wheel is where I prefer to be. Granted, this all depends on what you're trying to do. Obviously, your head will go up and down as you hop.
  5. Hi! I have a Jitsie Varial Race bike/frame (2021 model, I think) and I'm wondering about brake clamp torque specs. I've noticed that when the brake clamps are overly tightened, (I think) it causes the slave cylinder pistons (right terminology?) to lock up and/or return slowly (is that normal?). So I just ordered a bike torque wrench and some new M5 25mm bolts (the Jitsie are not good and I've stripped one already and will need to dremel a slot to get it out) and intend on trying to figure out what torque would be sufficient on the clamps to keep the slave cylinders from slipping whilst not being so much that it inhibits proper piston movement. I just had the brakes bled by a professional (also a trials rider) yesterday. The lever action is now excellent, but after riding a bit, I noticed the rear pads were returning into the slave slowly after the lever was depressed and released. This makes it so the wheel stays locked for a faction of a second longer than you'd expect when you e.g. try to gap, which is not good (i.e. a good way to face plant). The clamps are the ones that come with the bike. I think they're just the standard Jitsie aluminum ones. They do seem to deform some when tightened down. Any and all suggestions and knowledge regarding best practices for setting up and maintaining hydraulic rim brakes are welcome as I'm completely new these type of brakes.
  6. Just wanted to post to encourage you. I'm 40 and started last year. On a Hex now. Pulled shoulders and sore back at times, but it's so much fun. Working on improving my backhop now and hopping off of stuff. Been taking a bit of a break for bike race training, but will be back to it full force after that. Anyway, good luck!
  7. I use the Jitsie shin guards. They are great - super light, breathe well, and very slim on the leg. I even found a size that fit my super skinny legs. Granted, I haven't really taken one to the shin yet, but im sure they'd work well. https://www.tartybikes.co.uk/protection/jitsie_dynamik_shinguards/c119p12257.html?pos=12.916666984558105&search_params=YTo3OntzOjEyOiJjYXRlZ29yeV9pZHMiO047czoxNjoiY2F0ZWdvcnlfcmVjdXJzZSI7YjoxO3M6ODoia2V5d29yZHMiO3M6MTE6InNoaW4gZ3VhcmRzIjtzOjk6ImJyYW5kX2lkcyI7TjtzOjQ6Im1vZGUiO3M6MzoiYWxsIjtzOjQ6InNvcnQiO3M6OToicHJpY2VfYXNjIjtzOjEwOiJjb3VudHJ5X2lkIjtzOjM6IjIzMSI7fQ%3D%3D
  8. Thanks for the recommendation! Ordered one yesterday.
  9. Thanks for the advice! I finally got around to ordering some Jitsie disc pads and some HC1 levers. Turns out my Hex came with MT-4 brakes. Odd thing is that after I posted this, my brakes stopped slipping for a while, but now they're slipping again (cold weather?). Went ahead and picked up some new Comas bars too.
  10. Hi, Pretty new to trials (just a couple months in), and have the newest model Inspired Hex with Magura MT-2 brakes. The brakes for the most part seem fine for use as a beginner. However, I'm not a fan of the flat levers. They take quite a bit of grip strength to lock up, and I've noticed the brakes slipping as my hands start to get tired and painful due to death gripping them. I'm not sure what component would make it so I'd need to apply less pressure to lock up under pressure (currently working on backhop, practicing hopping side to side with my front wheel on a bench, endos, and front wheel pivots). Do I just need some better one-finger levers? New fluid? New brakes? I do want to be able to modulate them. Thanks! Edit: Wanted to note that I did bed them in according to Tartybikes instructions.
  11. trialscrab

    Simple

    Love the video and the shoulder dabs are my fav!
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