Classic Trials

Ages ago I posted details of my Norman B4 fitted with 8E motor. Having gone through it and replaced seals,bearings,rings and correct gearings I was disapointed in lack of power. Still using 8E barel with 40thou off top I was wondering what are the differences in the 7E barrel and compression. I have a spare standard barrel,so a case of reboring the suitable one with 1H piston,any words of wisdom out there?

Building a Francis Barnett with a 32A motor and seem to have starting issues from cold. Motor has been totally rebuilt, new piston, crank, mains, seals etc and is fitted with a new Electrex world ignition and new Amal concentric carb from Villiers services. Running a Villiers service front pipe and Alan Wright WES silencer. From cold it doesnt seem to be getting enough fuel, but when you check the plug its fouled. Once hot, it runs and starts fine. Can anyone confirm the best plug to use with this set up and also what pilot jet should be in the Amal. Cheers

Does anyone know if the Villiers 33a 250cc cylinder head works okay for trials?. The plug thread is longer than the 32a from what I can tell and the squish band gives higher compression.

Hi All Which way round does the points cam go on a 37A motor? The cam I have has a "1" stamped flat on the one end that could indicate the direction of rotation. The cam has a steep ramp and a much flatter ramp on the other side. When the cam is put in with the "1" on the outside face pointing forwards, the steep part of the ramp will be effective for the points closing. The Villiers manual is not much help, but I'm sure the solution is something that every Villiers owner (except me) knows. Thanks David

Hi all Does anyone know where I can get a schematic diagram of how to assemble a villiers 4 speed gearbox (36a) as I have wasted a huge amount of time getting it wrong-I can only select 2 gears and you have to stamp on the gearlever to get them.

Hi I wonder as a new member if there are any of you out there with experience of modding the pre 9E engines . I'm hoping to get back into trialling my Norman fitted with mildly modded 8E . If we start with the exhaust I made a tidy but confused system with the front pipe crossing over from left to right around the front downtube and over the top of the flywheel / gearbox to enter a transverse tubular pot of two chambers and very short with the tailpipe blowing down onto the rear chain . Neat yes , confusing the charge I suspect so No.1 on my list; any thoughts ? Would like to keep it high level really , considered just cut and shut of standard silencer from Armours . Nex…

I have been riding my Greeves Scottish TAS for a year now with the Villiers S22 carb and have changed over to a Mikuni VM28 as the Villiers was p____g fuel everywhere and it's never been that great due perhaps to wear or lack of use - I've only got to leave the bike a couple of weeks and something playes up like the clutch dragging or the carb running weak. Can someone please advise on the needle jet size for the Mikuni as this new carb is causing severe detonation in the midrange - this is nothing to do with the ignition setting as the bike is excellent through trials sections and off the bottom end, it's just that I ride a lot on the road and need to get this sorted bef…

Hi All Putting together a 8E trialer. Have obtained a two hole head however one of the holes is oversized. I always thought the decompressor was same size as standard plug. Anyone know if this is any use for my build, or simply use the standard head. Thanks in advance

Hi I have a Villiers engine code 071B xxxxx 200cc. Could anyone help identify what it is? I assume a 7E?

I know this might open up a complete bag of worms but here goes..... The Sprite I am doing at the moment has a Villiers 32a engine with, I understand, a Parkinson Head and was once a 360cc. It has since been re-sleeved and is now back to standard bore as a 250 so other than the oversized cylinder head it appears to be a standard ally barrel. The question is; Which electronic ignition is the right way to go for trials? I have heard that numerous James, Greeves, Sprites, Francis Barnets, Saracens etc etc are running well on either Simon Bateman, Rax Caunt or PVL ignitions - can anyone point me in the right direction and advise the different characteristics that make one…

My villiers 32a has started jumping out of 4th gear Ihave inspected gear cluster and can see no damage anybody any ideas

I have an 8E Villiers engine I’m looking to use and wondered if anyone could give me some advice on primary gearing. I notice that Villiers Services do 15/16/17/18 primary sprockets. Any views on what would be best? I have the 4 speed box and again wondered is there is much value in extra low 2nd and 3rd gears? any advice appreciated

Recently stripped my Villiers 8E as the primary case needed some welding; painted the head, de-coke etc whilst out of the frame. Re-assembled in the same order without any problems and now can

hi all ,name is gordon 'and i am thinking of trying to fit a villies 6e engine into a bsa d7 bantam frame ' i just wondered if any of you guys have already done this and what problems you came across ?'i have always liked the simplicity of the villiers motor and i have been told the bantam frame is better than the francis barnett frame 'any help or info will be great looking forward to your replies and regards gordon in the uk .

some pics from Italy https://photos.google.com/share/AF1QipNuF1yYUfpC3IXsDLJqzxeFW1sVY8X0FgpzXqb--5KQfv44uDMmR8l-MXD39-ZBlg?key=dWJLZktoT1p4c0NCcVlhSmVRa09JWDJnTXM1dHBR

Hi there I've just fitted a mikuni vm22 carb to my bantam Simple question..... Choke on, is it with plunger up or down ?. (ie lever down puts plunger up, lever up puts plunger down if you see what I mean !) Also has anyone changed main jet size ? Many thanks John

Hi, I’m looking to buy a Cub. Please let me know if anyone has one they’re looking to sell. Thanks

Well after rebuilding my 198 Bultaco engine [all new seals etc] and spending the last week carefully putting it back together and not even rushing the final assy today , the bloody thing still wont run ..... not a back-fire ...nothing ... zipppp ! Plenty of spark , fuel is there and am annoyed / fed-up / going back to 4-stroke & leccy start as soon as I get this bloody lemon going ! If anyone knows the ins/out of a Bultaco engine and can help , even if its "try this carb" I would be so happy to hear from you , am more than happy to bring the bike over to your garage ! Other than that , constructive comments apprecaited ! Going down the pub , Ta Greg

I thought the Bigest Four stroke trial was held in the UK yesterday? So Where is a report from the trial? Or even a mention? This Classic Trial Scene Has really took A Dip in popularity in the last couple of years ,has it not? I hope I am wrong? Or am I just banging my head for my own sake? Regards Charlie.

Hi, can anyone help me with any information or photographs of Wasp RT4 with Villiers engine circa 1964. I am in the process of rebuilding a RT4 and this information would be most useful to achieve the correct period look.