pat

Hi, Will kindly ask if you know of, commonality yes/no regarding fuel tanks for FM330 vs FM350? Available NOS fuel cap? -maybe Acerbis "small" std threads? Do you know of anyone who offers spoke sets for FM330 1979 off the shelf? BR, Pat

Thanks jc2 and the rest of you for this nice 6-8E info. Looks like these engines are more common at the Pre-65 trials scene today vs 10y ago...yes. Have tested one, fathers 197cc, rebore, only new rings, old std ign, std carb and simple pipe..not bad actually..Now sold. Ive not read the Villiers Singles Improvement Handbook, but do remember friends ref to instructions eg inlet porting floor, improvements require hard plastic sealing a "hole in the floor" according to the handbook, no? Been running a slowmo 197cc project for some years..interupted by a low budget Bantam (actually yes )... Have finally collected most Villiers parts- and received almost all ordered spares from Steve.. -Regarding CR, "The 7e was said to be developed for trials with available piston options from 8.25:1 to 10:1" As I understand my piston is std with mesaurement from wrist pin to piston top face 35mm, I would guess this mesaurement has not been altered (2-t) at different pistons for CR options, different piston top shapes vs std flat, yes..what do you know? -different bottom gaskets, yes - taking off mtr from top of cylinder, yes - and of course ideal head combustion chamber Im a Villiers leman and a 2-t nerd, the Villiers stroke is long and the piston is tall.... Question: Do you know if anyone ever offered batches of new prod 6-8E ally swan neck manifold for Amal flange/26 or S25...Swan neck is a must have for trials as I understand..Milling a straight manifold could be done....BR, Pat

Thanks alot dadof2, Aha of course. The jig a third option not dismantle the crank ..my bad luck in thought.. Jig should not be impossible to machine from ally or steel. Do you know why K type roller cage is useless for small end, does it crack maybe? Was happy for an hour when finally found, after looong time search, odd size roller cage....K. Well, in the back of my head remember something about small end roller cage needs to be specific cage design.. cheers,

Dear all, Im just interested if any of you know how people maintained their small ends in the period pre roller cage bearings and for that matter, today at 4-t, eg ultra thin BMW. Press in the new bush in place, Ive done, fine drill by adjustable reaming tool 0.01-3mm, Ive done. Maybe Ive done it wrong.... Think Ive read when order new small end bush for eg Pre-65 2-t, "you need to fine drill inner diameter by reaming tool once bush fitted to the con rod" .... Regarding a thin mtr bush 1.5mm eg like BMW, a very skilled man, 55y of expericence, claim that nothing but dismantling con rod from crank will do, -to be able to fine drill a small end bush in cod rod in a "mill"... Eg is this the way how to maintain a 4-t eg BMW by the manual, dismantle the complete crank each time??? Cheers,

Thanks alot ourian and bigshineybike Aha, BSF and socket head cap.. http://www.stainlessautomotivefastenings.co.uk/index.php?main_page=index&cPath=116_52&sort=20a&page=4

Dear all, Any idea where to search for allenkey head screws 5/16" 22TPI? Do not have to order these from the US, do I???? Are 99% sure of the threads, anyhow- similar to the fine threaded end of Bantam cylinder studs cheers,

Hi Andy, I would like to order a pipe from below:-) http://www.msrmotorsportengineering.co.uk/pre-65-trials-bike-frames/b-s-a-bantom-trials.html

My misstake only looking at evilb..order Available http://www.mdracingproducts.co.uk/universal-rear-fender-cross-27# Any idea how well these matching the rear tyre radius?..~£4 cheaper vs evib for accurate plastic compound/colored grains Even Preston Petty brand from the 70´ seems to be in business -polypropylene, UVI and thermal shocks resistant, no black http://www.dsoracing.it/index_en.html Powder coating alloy as secure option, look-wise. Actually, have seen baked copies of alloys.

Dear all, Do need some advice here, where to search for proper black full lenght, ~180dg, polymer compound 5" mudguards similar to all OEM, Acerbis, UFO... mesaurements and shapes identical to 5" alloys = accurate diameter for 18 x 4.00 for "periodic 50´ rigid look:-) Were naive enough assumed no one offering rear 5" full lenght with smaller radius than required for 18 x 4.00.... should match what?? 17 x 3.75 is it even possible to find for OEM Cota 125?? And China compound not at all corresponding to all trials / motocross panels, tanks, mudguards..Ive ever seen from -75 up to date. M G.. Cheers,

Hi all, Will ask if any of you have done an overhaul of the TYR rear suspension relay arm? Due to nipples mine lasted for ~29y..ok the play is NOK so could probably needed replacement 3y ago Do you know if the 2 bearings of same mesaurement, in the suspension relay arm , by any chance is industrial std bearings / seals? bearings pn 93315-31732-00 seals pn 93109-17048-00 Cheers,

Hi all, Little about Bantam final gearing : -which size, teeth of rear sprocket do you think is the best combo with the smallest engine- and gearbox sprockets from Rex, riding 1st gear in Pre-65 sections? 56t--60t? My weight is ~65kg.

Thanks b40rt, Mons will be in my travel plan for next year.. Peters packing/architecture of fuel tank, seat and muffler is one of the best Banters Ive seen. Have planned this height positioning of fuel tank, tunnel vs top tube like a speedway-ish fuel tank position..and sub frame height vs head, fun to see it executed

Thanks Jon, Mick Ash has been very helpful and kind answering questions over some ~1.5 year now. Will order a kit from Mick if I find a gearbox at ok price..in which his kit fits. --------------------------------------------------------------------------------------------------- It would be intersting to know how this wide spread issue is solved at B40, Cubs and pre-unit Triumph twin boxes. Villiers had all sorted out allready at 4speed boxes for 9E. Cheers, Pat

Hi all, Will kindly ask you for some tips or guidance where to find a skilled workshop who might be able to cut gears for 1-3rd gear, one off for pre-unit gearboxes? (not for Burman GB11/GB47 ) Cheers, Pat

Thanks ClassicEd, B40RT and Naichuff. The hard way, here I come again :-) In the old days own jets where taylor made when needed... In terms of "hole diameter" 115 is most likely betewen 110 and 120...ha ha. I dont know, not an option for Keihin and Mikuni I would say, maybe for Amal. cheers,

Hi, Will kindly ask if any of you know of a supplier who offers Amal MK1 main jets in sizes above 110 but leaner than 120? Cheers

Hi Shedco, Yes Im using tubeless set up at my TYR, Morad for GG TXT, great service from Central Wheels. Perfect- performance and fitting in 1/2 season..Cant understand why I waited so many years..Could not stop my self go blingbling.. Had major probs maintain tyre in place at std DID, good nick though 27y... Have tested Competition, X11..all "fell out of position"...Ref to Michelin "Competition is made for tubed rims"..based on X1 from the 80

Nice Ben, Im surpriced actually, the stickers and coat looks almost like new after 1/2 season.. *Thanks to chris@graf-fix.co.uk, heavy duty motocross, one of stickers, £40. Great support. *unfortunatley, the powder coat shop is not alloy specialist..as I now know is critical for "sheet rims", require "acid-ish" coat for perfect adeshion, as mountain bike suppliers are skilled in. Paid ~£40, ok. Several of my casted rims, std or where wet paint look ok...exposed for numerous of tyre shifts per weekend....calm or in panic...ha ha..Not compareable to trials offcourse.. http://i633.photobucket.com/albums/uu54/patscabinet/04082011003.jpg http://i633.photobucket.com/albums/uu54/patscabinet/04082011002.jpg

Hi all, Everything is possible today, thanks to first class inspired engineers.. ideas.. http://bsabantamracing.editboard.com/t746-mike-powell-s-125-engine

ALTA, Most has all ready been clarified in this thread. Do not spend extra money at Betor with few parts alloy..minor weight red and none perfomance benefits vs steel Betor. Im using steel Betor, working after ~100h in use but progressive spring crap design is what it is..a poor compromize ~£100 / pair..well well. A spring set like Magicals would probably be the cheapest upgrade..if found in suitable diam..Ref to Betor these are fully rebuilable, ha ha.. I just want to add, product developent skills and feature level = pricing does matter, CRITICAL 1. nitrogen gas prevent the oil from foaming and as mentioned before prevent the oil absorbing moist/keep cleaner, and can not understand why the very good designed Rockshocks left out this absolute feature...I have asked. When TS trials shocks engineering from, MAXTON and Falcon alloy are close to mono: Ohlins status, even from late 80´ just rebuild again and again.. Note: ..Ohlins TS MX do NOT offer rebound or compression control, unbelivable..~ £900 pair..insain, default setting on each and every short travel susp classic motocross bike.. 2. setting, NOT preload, springs: Here are Magicals superior and I do not understand why they are uniqce offering the possibility to choose different combination of springs per shock for each riders requirements..with the attempt to optimize every part of the travel lengt, especially compression from point zero...splendid input from Mick I guess..Simulate linkage action as I understand. -linear spring + adequate controlled valves/gas and oil flow is always the perfect desing, require state of the art valve design. valves and adjustment of such: -Im surpriced of the fact that MAXTON is the first supplier ever providing TS trials shocks with compression and rebound control... BR,

Hi, Sixpencer Trophy 2011 (Gothenburg Sweden) was a nice event, 82 riders Pre-65 and TS (9 in grey bird class separate weekend). Very few DNF as I understand. In total 91 riders from Scandinavia and NorthEU... Competition, ForFun set up as I see it, classes rigid: grey bird, pre-unit, unit, 2-t...., groups of ~10 riders, we observed each other.. Leif from Denmark in our group is rider/photografer. Please do find his link here: http://www.dropbox.com/gallery/48767867/1/Sixpencer%202011?h=597062 Cheers,

Hi Hughesy, Great support from Jared, jb@southwestmontesa.com. Ordered for 242, needle bearings, bushes..perfect. Cheers,

Hi all, Is there an existing up and running- or is there interest among clubs/national org.s of establishing a TS Europe cup (pref together with Pre-65)?? Or even Europeen Championship like the motocross-people arr.. I might have missed this discussion.. A TS competition photo provided by Todotrial website: http://i633.photobucket.com/albums/uu54/patscabinet/VicalvaroMadridTS2011a.jpg

Hi Woody, Did you test rode the red tank striped sister of this lovely (Blai

Hi all, Will kindly ask about available replacement ingition covers for TYR?? Have done some mapping of bolt patterns TYR/IT by pics but want to ask if any of you can confirm if any IT cover (as clutch cover, and cases -82) do fit TYR?, simply because of available NOS/used IT250-490 parts.... Bolt patter ign covers -82 IT 3 holes and TYR-84-> 4 holes. I