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.

Bultaco

  1. Started by tomtom385,

    Hi, wondering if anyone can help, i am thinking of fitting a tow bar on my vehicle for a bike rack but need to know the wieght of a 198A Bully, i thought about 140kg??????????????????

    • 9 replies
    • 2.9k views
  2. Hello again, Refering to my 64mm stroke crankshaft in my 325 sherpa t engine, that should be a 60 mm stroke. Am I disappointed after fitting a new rod kit and assembling the engine cases.You better believe it I am. Should I have checked the stroke? Maybe I should have.But in my defence I bought it as a basket case. Well I have a Italjet 326cc engine spare sitting on a bench in the shed.Does anyone know if the crank out of it will fit my Bully.I know they share common piston's and rod kits.They have the same flywheel.They share the same bore and stroke.I guess I could strip the engine ,but the work benches are full at the moment. So if you can help it would be apprec…

    • 8 replies
    • 6.6k views
  3. Started by Art,

    Can anybody tell me if my wiring might be the cause of not cranking up? Ok black, yellow, and green r coming out of motor. When I got this bike there was no switches on it at all, no kill switch no headlight switch and no wires to tail light. Green coming from motor I got hooked to green wire that runs to that little grounding place under seat, black wire coming from motor I got hooked to coil wire and the yellow I got hooked to nothing. What is the two wires running from grounding place under seat?

  4. Started by justdrew,

    I am currently getting my 158 ready for registration and need a copy of the wiring diagram for this model. I have others that are similar but not the same. I assume the 159 wwould be the same. If anyone has one that they can email me I would really appreciate it. Regards Drew

    • 1 reply
    • 1.7k views
  5. Started by bondy,

    hello anybody know where i can get a wiring loom for my bultaco 199A

      • Like
    • 6 replies
    • 5.4k views
  6. Started by TC2000,

    Dear All, I am trying to clean/restore the wiring of a recently bought Alpina 213. Need your help to clarify components and correct wiring The stator has 5 coils, and 6 wires: black, yellow, green, green/yellow, red, grey I found the black connected to ignition coil (and the bike runs 🙂 ) and kill switch. The red and the grey are not connected to anything. The green is earthed to the frame. The yellow goes to horn (and it sounds) as well as main light switch. Stop light does not work. Tail light always on... My questions: 1/ is it possible to identify the coils and their functions? how to? 2/ I understand one coil is for igniti…

    • 2 replies
    • 3.4k views
  7. Started by bondy,

    anybody know what wheel this is on my 199B

  8. Started by Art,

    Can somebody give me some advice or whati could possibly do to get my bultaco alpina 250 to start up? Im getting spark and gas comes out of plunger on carb but I can put starting fluid in it and it still won't even try to start.. please help thanks art

    • 1 reply
    • 2.2k views
  9. Started by myson,

    Hi, just finished pulling apart the clutch and fly wheel (exellent clutch holding tool came from Bult UK yesterday!)) on M80 motor. Does anyone know the correct sizes for the woodruff keys as the ones that came our were decidedly of the home made variety. Cheers

    • 5 replies
    • 3.3k views
  10. Started by smelling123,

    http://cgi.ebay.co.uk/Bultaco-Sherpa-340-/280678512918?pt=UK_Motorcycles&hash=item4159be3916 Looks interesting...

    • 11 replies
    • 7.2k views
  11. Started by borderlord,

    Will the Haynes workshop Manual for the Bultaco Sherpa T 1972-1975 cover my Sherpa T....................... engine number JM-15900493 Many thanks Borderlord

    • 2 replies
    • 2.1k views
  12. Started by netley,

    Starts 2nd/3rd kick, oh joy. Thanks for the help and advice, really appreciated. I'd like to install a kill switch. Any ideas as to a simple way to do this? Cheers

      • Like
    • 2 replies
    • 1.9k views
  13. Started by colinf,

    With the 191 rebuild coming on slowly i've been out practicing with my nephew on his '97 Gas Gas ( JTX250 Contact ).We were speculating how much harder things might seem on the Sherpa and we were trying to work out how much heavier the sherpa is than the Gas Gas....so the question is what does a '77 191 Sherpa weigh in pretty standard trim ( ally tank,plastic mudguards ) ?

    • 3 replies
    • 2.9k views
  14. Started by bondy,

    hi all the bottom nut on the yokes the one that holds the bearings in anybody know what size c spanner id need to tighten it up? i know you can use a big screwdriver but ive just had the yokes painted. and dont want to damage it or the nut?

    • 4 replies
    • 2.5k views
  15. Started by bondy,

    hi all can anybody tell me witch way the bolts go on the 199A yoks? daft question i know theres a resess on the botom yoks so the hex heads go in facing out but the top yoks have the resess at the back is it possibel to have the hex heads facing out on the top yoke? because the nut wount fit in the resess but i have seen bikes wwith the bolts this way only reason is my yokes or blue so ive got black bolts .and would look beter this way

  16. Started by pedronicman,

    So you think you can ride a Bultaco! ..... Found these on the net of a young man at play..

    • 25 replies
    • 9.4k views
  17. In 2015 and then earlier this year i visited Yrjo Vesterinen at Apico. This was followed by a trip to his home and also a look at his incredible private motorcycle collection. I photo'ed everything and its all online now. There's an interesting detailed career interview in chronological order . There are many many photos of his motorcycles collection ,home , retro trials clothing , even his baby photos + riding photos Its for trials fans who like the detail and its all typed up word for word , straight from the horses mouth. Ive put it on my hobby web. Due to the amount of content it took a lifetime to arrange. Grab a cuppa ..... say goodbye to the wife for …

      • Like
    • 4 replies
    • 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.