muddytires

Found this on youtube today from the pegg and frost show :undefined

This is a good point ! The worse the bike is , the more the rider has to compensate and use their skills. I have been riding my tlr200 a lot lately, and each time i go out i find myself improving. I hope to get a modern bike soon , and i know that riding an older bike will help being a better rider as you have to learn to ride using all that you've got, instead of relying on great suspension, motor and disc brakes.

I have noticed similar fuel problems with my Tlr200. I rebuilt the motor last summer with probably a little too much compression , so i use higher octane fuel to solve the problem of pinging. But the motor seems very sensitive to the quality of the fuel, two or three weeks after buying fresh stuff it will go back to pinging again. I am about to pull the motor apart again to fix the compression issue with thicker base gaskets and hopefully not worry about this anymore.

The honda 200cc trials engines have a different head with smaller valves and ports, heavier flywheels and lower gearing. The cylinder has the same bore and stroke though and the casings and some of the internals are the same. A 22mm carburetor is what normally comes on these . I am using a 24mm with a 100 main jet ( bored out 22mm) with good results on my Tlr200. If you cant find an original carb, i think you can use one from a xl125 or cb125.

Nice write up, Thanks. Sounds like you are ready to trade in the tl125 for a proper twinshock.

Thanks, I think that is a good idea. It probably make the learning process easier by being more fun riding with other kids.

I,ve thought of doing this as i mostly ride for fun, but to ride in twinshock trials events you can't modify to disc brakes to keep competition fair. Probably the easiest way to convert it would be to find a pair of forks ,with wheel ,caliper and lever from a more modern bike. Maybe a early disc brake Beta, Fantic or Honda rtl with similar head tube diameter and length. The rear would be more complicated as you would have to weld up a tab on the swingarm for the caliper and modify for the brake pedal. I,ve seen pics of conversions, but don't know what they have used.

That's awesome ! Looked like a great day for everyone. I can just picture all the kids running home to their parents, to beg them for a trials bike. My son is 9 , and although he enjoys riding once he's on his xr70, he's not overly enthusiastic about going riding when i suggest it. I suspect that one day i won't be able to keep him off it; i just don't want to push him into it. And although he had no trouble learning to ride and seemed like a natural, i think he is lacking in self confidence, even with positive reinforcement. Any tips on teaching kids to ride?

I have just posted some of my mods i did to my tlr200 at the end of "restoration projects" in the classic trials forum and also in the lastest ''honda reflex'' post in the the Twinshock forum. These Hondas are alot of fun to build and lots you can do to improve on them.

I couldn't find a skid plate so made it myself. With your footpeg change, do your feet now hit the mounting bracket when slid all of the way in? That was my concern when I made the pegs so I kept the standard configuration. Do the alloy pegs hold up? With the pegs i have they still sit a little higher than the brackets. I was a bit worried on how long the alloy peg would last ,as they where very light and not very beefy, but so far they have held up well and survived several hard landings from 4' drop offs.

Where did you get the skid plate or was it fabricated ? I don't know what differece the wiseco piston made, as the bike was a non runner when i got it. I suppose i should get a adjustable cam sprocket and play around with different settings. As is, the bike has plenty of snap to get me over large logs and rocks ,it just pings a bit when the motor heats up. Heres a tip that someone gave me who has also been building a tlr. If you cut off the lower dowel part on the footpegs and place the dowel or another spacer on the top side of the peg inside the bracket , it will lower and set the pegs back about 1/2''. You have to switch the springs from the opposite sides also. I did this and just that 1/2 '' made a huge difference in balancing the bike. I used some cheap wide alloy pegs i got on Ebay that are for an xr/crf 50. Something else i did was make an extension for the clutch arm for a easier pulling clutch lever.

Wow, all amazingly beautiful bikes ! Nice collection.

I did the carburetor bore mod , which i read on an old post you must have wrote. Also opened up the manifold and port and polished the intake. Thanks for that tip ! , very pleased with it. I will try the adjustable sprocket and see if that solves the problems of pinging probably due to preignition with the higher compression piston i used. I,ve had alot of fun building my bike , making improvements for better trials riding. Still on my list to do is a alloy wes exhaust or similar, a stonger alloy skid plate and to lace up the wheels with some good alloy rims. The only thing i don't like about the bike are the drum brakes, which will stop me ok, but almost imposible to get the rear tire up in the air like on a modern bike.

Mcman, Did the cam timing advance make a good difference to the motor? I rebuilt my motor with a wiseco piston which has a little more compression , bored the carb to about a 24mm and port and polished the head and intake. I have to use a higher octane gas so it doesn't ping. Sometimes it will knock a little when hot and under load. I was wondering if doing a cam sprocket advance might help with this. And also how you did it ?

I love mine ! A Reflex in stock form for trials is not ideal but with a few modifications it is probably one of the most competetive twinshocks out there. Removing all the electrical road gear lightens the bike alot. I added a fiberglass tank/seat unit, reworked the shocks and forks to get a little more bounce: replaced the front sprocket with a 10 tooth ; added some good tires, added and lowered some wider footpegs for better balancing. I also port and polished the head and opened up the carb for a lot more snappy motor. The bike will climb almost anything. I posted some pics in the classic trials forum a couple of days ago. Very glad i started this project as it turned out to be a very fun bike.