Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Aircooled Monoshocks

  1. Started by kimpybugalugs,

    I'm thinking of going the aircooled mono route. I'd like - 2 stroke, disc brakes at both ends, electronic ignition, not too exotic so that spares are available. Which is best? I've seen a Montesa 310 and a Fantic 305 for sale but don't know anything about either of them. Any info appreciated? I've also seen a Honda TLM220R - this only has disc on front - do later ones have F & R discs. My thinking is that I can ride the air cooled mono class at the "classic trials" and have a go at "modern trials" on the same bike. Any info/advice greatly accepted.

  2. Started by marky g,

    Got to be the Yam TY in my eyes, I did have a nice TR34 240 Beta that came close. I suppose I should get one before the prices start to go through the roof

    • 27 replies
    • 12.7k views
  3. Started by fergie,

    A friend's father has a can-am mono that he might sell. I don't know the year of it. Can anyone one give me any advice when looking at it. He says he has not started it in a couple of yrs. and it has sat most of the last 15-20 yrs. Only starting occasionally. Any problems with the mono can-am's. All I know about them is that they were made by Armstrong in England until 1987 and they had a Rotax motors. I know chassis parts will be difficult to find. Are these bikes competetive with other mono's of the day. Also, what size rotax motors were in these bikes? Thanks for any info you can give me. Cheers, Fergie.

      • Like
    • 15 replies
    • 11k views
  4. This very unique home made trials bike has recently surfaced at a local trial in Connel Washington. It was built by Frank Theim of Idaho and uses a KX 80 bottom end mated to a very customized Hodaka cylinder and head. Apparently Frank made his own frame and almost everything else!

    • 15 replies
    • 10.9k views
  5. Started by tyanything,

    Rescued a dumped JCM in poor condition and I thought I'd have a go at restoring it as in the main it's all there. Can't seem to find a lot of info on it though and my first problem is where will I get a flywheel puller for it? Thought my TY one would fit but it's a different thread. Any info on bike much appreciated. Cheers! Previous rescued & restored bikes to a useable condition and current projects.... TYZ.... Yamaha TY125 & TY250 (Pinky).... Suzuki Beamish RL250 (in pieces at the mo).... JCM (to be stripped)...

    • 6 replies
    • 10.9k views
  6. Started by madmostin,

    Hi all this is my first post having just purchased a Honda TLM 200f 1987 Having got the machine home i checked the bike and found the air filter to be junk! Called BAT motorcycles who have parts lists for TLM's Ordered OE filter

    • 11 replies
    • 10.8k views
  7. Started by kimpybugalugs,

    Hi All. I have just bought one of these. Is there a difference between a TLM 200R and a TLM 200 (do they both exist?)?. The guy I bought it off ran it pre mix at 40:1. What is factory ratio? I run my other bikes at 50:1 - would the TLM be OK at this ratio? It would save me having two batches around. Are there any good websites for info on this bike? I'd like to find out about any potential problems/issues and any easy, cheap worthwhile mods. I'm used to a TY175 and this thing has enormous instant grunt compared to the Yam. Should be interesting. Should I have posted in the Honda section (it did seem to be all about TLR version in there)? Thanks in advance for any h…

    • 4 replies
    • 10.2k views
  8. Started by hop blip and a jump,

    I have taken the engine out of my 87' Garelli 323 section today ready to do a freshen up its all original and has never been touched. I've taken the top end off and the piston is looking a bit ropey even though the bike ran fine!!! Anyone know where i can get a piston kit and engine gasket set for the Hiro engine????

  9. Started by ar22,

    I have a Delorto PHBH26 carb which I have had from new basicaly I am thinking of off loading it and do not want to mislead any one so am looking for some advice as to how good my memory is (and if the carb is of any use) I owned a 1984 250 mono (first ones out) For some reason at this time it was the thing to do to change the carb to make the bike run better I used it for a year then sold the bike but kept the carb Is my memory correct and is this a thing anyone else remembers. I can't even remember if it was significantly any better than standard any views ??

      • Like
    • 12 replies
    • 9.7k views
  10. Started by andyrothers,

    Finally after 6 months skinned knuckles.....

    • 22 replies
    • 9.7k views
  11. Started by hop blip and a jump,

    I bought an 87' model Garelli 323 aircooled mono today, road registered on a "E" reg and only 3 owners from new and even had the original handbook with it. It's in exceptional condition, but isn't sparking?? I think the points need looking at?? i haven't messed with points for about 15 years?? any one care to refresh my memory on the right way to set them up??? And any info on these garellis would be a great help.

  12. Started by gasgas249uk,

    I think this bike looks awesome . Mecatecno were such a small company but somehow out of enthusiasm rather than business sense they made their own engine entirely. The piston was shared from a Bultaco 325 and the cases are all magnesium making them very light and fragile. Unfortunately the economic crisis is Spain in the lates 80's early 90's proved too much for them. RIP

    • 6 replies
    • 9.3k views
  13. Started by spokerider,

    I took the 1984 TY 250 mono [ new to me ] out for a ride after stripping and cleaning the carb. I seemed to run great [ with the TY carb ] and pulled strong on the run. I had ridden some fast logging roads in 4th and 5th gear, then went to a single-track trail up a mountain. An hour into the ride I turned around to come back, and began picking my way down the rough single track in 2nd and 3rd gear using engine compression to slow the decent. 10 minutes later, the engine quit and would not restart, so, out with the spark plug and it looked to be very black. A new plug and I was good to go.....engine started easily and away I went. The black fouling on the plug *felt* on t…

    • 4 replies
    • 9.1k views
  14. Started by old trials fanatic,

    In the process of putting a Fantic 305 back together and the discs are knackered. Found someone who will make some for me but they have asked if i want wavy ones or just std discs. Question: Ive seen wavy discs on bikes but never knew why. So why would i / should i fit wavy discs and if i do drilled or not ? Sorry but most of my trials experience has been with drum brakes and i have no idea why you would want to fit wavy discs in fact they look like they would feel really weird in use a bit like having distorted drums but i'm probably dead wrong. So please enlighten me before i spend my hard earned. Thanks

  15. Now this has probably been debated on here many times but i seriously would appreciate the advice. Some of the local "Classic" clubs dont seem to cater for or want the pre 65 bikes so as they have an air cooled mono class thought i might try that seeing as i'm an old fat git with very little talent so the modern trials are not my cup of cocoa. Seems to come down to TY250 mono, Beta TR34, Fantic 301/303 i've seen a Montesa 309 and a Gas Gas but spares might be a problem. TY250 is probably the favourite as good parts availability and bullet proof but are they competitive against the Beta or the Fantic? Seem to remember they could hold their own in the early 80's but i …

  16. Started by pat64,

    hello there can anyone tell me where i can find a copy of a manual or owners handbook for download for a1989 250 mono cheers...........

    • 4 replies
    • 8.4k views
  17. Started by stuarty70,

    hi guys, i have stored away in garage a jcm323, my father bought it brand new from peter quinn motorcycles in newcastle( im guesing 1983,1984) im sure it cost £1850 ?, also pretty sure he convinced my father this was one of two he had just got and the first in country, my brother brian young rode it up here in scotland with fair bit of sucess, it has not ran in 20 odd year and is complete and std apart from my father painting frame blue for some reason?? can anybody tell ne were the " chassis, bike number is located" thanks stuart young

  18. Started by hop blip and a jump,

    Its nice to see these bikes riding some hardcore sections!!

  19. Started by bambam_n_chunx,

    Just picked up a 70`s ossa mono from leeds. I remember seeing some pics of JR riding one but cant find any on the web. Does anyone have any pics they can post or email me?

  20. Started by nzpeterb,

    Hi all, I have just purchased a TY250. When it arrived the numbers indicate its actually a 1986 TY350 frame and engine bottom end with a 250 barrel and head. What are the differences in the bottom end of the 250 and 350 engines? Do they use the same flywheel weight and gear ratios? For example I thought the 350 had a heavier flywheel? Regards, Peter.

      • Like
    • 7 replies
    • 7.5k views

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.