jonnyc21

@brewtus pagging Mr brewtus

I really don’t know other than maybe if you can find an old stock AJP? The other choice is to find a shop that can inspect it and hone it for you? I know motobene (my friend) was able to get some seals and the information on the hone size is in that thread so maybe that’s the best option? sorry I am not of more help. Edit: I think I just noticed you already have the AJP brakes? If so then if you can find new stock/lot braktech they did eventually fix the issue with the manufacturing defect. Though I am not sure how best to check lot/manufacture date on them. or maybe the seals could be replaced on the old master? See if you could order a new set? Wish I could be of more help. good luck.

Have you tried doing a re-bleed of the fluid on the clutch? I noticed on my 2017 300rr that if I am getting drag its usually just needing a fresh bleed. When I first got it I had to adjust it a bit better to get the drag to stop (adjustment of the lever required it to be pulled to the bar to not drag) but after I set it for no drag with the lever against my other fingers when pulled with my index it was fine. Not sure this will help but a few things I have seen on my 17 300 RR. Good luck.

One more FYI on my comment about the issue with the master needing to be honed. The bur is small and cuts a very small scratch into the rubber seal that is only easy to see under a microscope or quality magnifying glass. Even at that size it is large enough to let in just a touch of air. I hope its okay to cross post from another forum, if so here is the thread on the exact issue I am talking about from ADVRider. (almost forgot one was over there) https://www.advrider.com/f/threads/braktec-master-cylinder-problems-why.1090928/ PS. I see the images on the 3rd page are not showing up for me any more, however they looked a lot like post 57. - https://www.advrider.com/f/threads/braktec-master-cylinder-problems-why.1090928/page-3#post-28052194

The ones that my friend rebuilt where all brand new on new bikes... manufacturing defects happen and it might be hard to tell what lot or year the new one you have was built. good luck.

I wish I new why but I found that on all of my family trials bikes it has been easier to bleed the rear brakes this way. Daughters 06 Beta 80, Wife's 08 Gas Gas 125 (was the worst of the bunch), my 07 Montesa 4RT. I noticed your other post about reliability, you may want to double check your master dose not have a bur in the boar cutting the seal as well. I know of several people that had a buddy hone the bur out of the master and then have to put new seals into the Braktech masters. Good luck.

There was some past issues with burs in the brake masters on some of the older Braktech systems maybe you just got unlucky and have one that is eating up your seals? Not a 4RT issue but a braktech one if that is the issue. PS. unless you have an older AJP based system most if not all of the current trials brands use the same brake systems so really can't get away from that without replacing with old stock AJP.

I have had an issue like this once on my 07 4RT, from a drained system I was having an issue getting the air out even with vacuum and reverse bleeding. I ended up doing one last good reverse bleed and then having to pull the rear peddle off the bike lift the rear of the bike up with a strap and then pump the piston with a small rod (tip of a small screw driver) to get enough volume through the system to get the air out. Apparently there just is not 100% of the movement in the piston from the peddle and being able to fully push it in with the driver was all I needed. good luck.

I have seen a few people with very large heads end up having to go with something like a nice 3/4 open face street helmet over an actual trails helmet. I have a XL head myself so have been able to get into the larger end trials helmets but it isn't easy to find ones that fit well. And I wish you good luck. Few examples of street helmets that might work. (not saying this will work but maybe some ideas worth considering) Scorpion EXO-CT220 Helmet (Has a visor option) Shoei RJ Platinum-R Helmet (Visor included) Bell Mag 9 Sena Helmet (Visor included)

I have one of the older versions of their pro seat and it dose decent, I also have a larger seat for my Montesa and prefer that one over the buttrest however as it is a bit nicer to sit on both when riding connection roads and when stopped but for the price the buttrest is a good choice as its a lot less $ for total comfort gained. Hope that helps.

Been here for years, nice to see some new old ADV members joining...

My 2 cents worth... Even at ~205lbs/93kg I have had a lot of fun on a 125 so ya they can be great for adults. I would say at your size even more so. If you really like the idea of a 200 but don't want the left side kick maybe a Vertigo 200 could be a good choice? Have chatted with a few people that have them and they seem to love them as much as anyone I have seen with the Beta 200's. What ever you go with I am sure will be great and good luck making the call on 125/200 and/or brand!

I always wash, dry, then re-oil my air fitter before re-installation.

Here is my 2 cents for what its worth. Yes the Throttle is a slow (black) - I changed mine to a white and it was very noticeable how much quicker it is now. You can adjust the clutch lever to your preference for the point the clutch bites with the adjustment screws. I have known a few people even lightly file/grind the pin to get it even closer to the bars in some cases. (Same on the brake lever side for adjustment) Friction plates or just the dimpled plates? I think you will get the most progressive clutch feel if you do both, however the larger portion of the change is just the dimpled plates. If do go just the plates I would stick with the higher quality oils for best results. PS. If your not sure on what oil you want to use its best to two changes between the different oils for the best results between the different types (if you want changing it early to figure it out faster I would go at least a couple hours of riding on the first change before going to the second) Hope this helps.

Not sure what is available in your area but I have had really good luck with engine ice. Fan on my 07 4RT and my 17 300 RR both come on less now. No affiliation, just a happy customer. Example: https://www.rockymountainatvmc.com/parts/cycle-logic-engine-ice-p

The only things I have ever seen do this kind of thing in any fuel/petrol tank would be the fuel sitting in the tank tell it evaporates out leaving a mess, water in the fuel, or cheep additives. Not sure what else would do that. Good luck figuring out what it might have been.

At your size I would also recommend a 250 as a good starting bike for size with what your talking about. If your fine with a 2T bike you will have a little better time finding used but if you really want a 4T bike then Montesa or Beta are the only option with most of the Beta 4T's being 300's but they would be fine for you I am sure. I would also agree that taller bars are a better way to go if you don't like stock bar height but would suggest doing what you can to bring them only up as much as needed. If you go to high on the bars it will mess with the lever point and make it harder to ride the bike the way they are deigned to be ridden. There is a sweat spot that is really important to hit if you want the bike to perform correctly when learning to ride over larger stuff. Last and most important, even if your not intending to do competition trials I would highly recommend getting in touch with your nearest club and going for a few rides with them a few times so you can get some basic exposure to pure trials riding as they can help you wtih initial bike setup and other basics that will make your over all experience that much better. Good luck!

Ya my 07 4RT has a 2.0L tank so that extra .4 looks like it helps out a bit, and I forgot about gearing I was up 3 in the rear at the time so between the tank size and gearing that would make sense. Hope the contact tank works out well for you and I would expect that 11/39 to work out well for the kind of riding your doing with it for sure. Hope it keeps being fun.

I wonder how close that was to my 4RT trip, I want to say I was getting close to around 6-7 mph on average once you factor in the really slow/technical sections. I wonder if your 300 has a larger tank to get that range or maybe I was in lower gears more than I thought? Sounds like a fun ride!

I have a hard time riding anything by my trials bikes now as well even on trails because of the difference in feel and fun factor with how I ride. Glad you had fun and it worked out good for you!

Took a few trail rides on my 07 Montesa 4RT 250 and the best I ever got for miles was about 24.5 miles before having to use my fuel bottle (I did 27.8 miles total that day, sorry didn't check how much more fuel I used after adding the 1.5L bottle to the tank) I was in 4th most of the time and was able to ride in 5th somewhat often to get that and was almost never below 3rd. I doubt I would get that on my 2017 Montesa 300 RR and I would highly doubt I could on any 250-300 2T as even my daughters 08 Gas Gas 125 always needed fuel before my 4RT did on our family trail rides on the trials bikes. Hope that helps.

Glad you figured out how to get it setup and got a chance to give it a go. Thank for sharing.

I thought Mots had some decently matching Green to the Vertigo, but when I check I don't see much in green so maybe they sold out with current supply issues? I thought there was one other at least but checking I don't see much so not sure.

Not going to say a thumb throttle will not provide the extra control or not as I wouldn't know having never tried one on a trials bike, but I sure wouldn't expect it to. When I think of the kind of moves your talking about trying to use the thumb throttle to help with I have to consider the trials training sessions I have attended... At them I was taught to use the clutch to manage the landing of bigger moves like you indicated. Really not trying to be a nay-Sayer and hop it works for you if you do try... Good luck, and I am interested in hearing how it goes if you do end up giving it a try.

Could get a set built for trials bikes... https://jbanyeres.com/en/chassis/2601-bolsas-sobre-deposito-universales-para-moto-de-trial.html?search_query=bags&results=1