Jump to content

pschrauber

Members
  • Posts

    1,407
  • Joined

  • Last visited

Posts posted by pschrauber
 
 
  1. The right chain oil ... there are as many opinions as brands. Coming from boiling the chain in this messy chain grease, then using all kinds of oils I now use PTFE. PDL chain lube is the brand but I think there are similar brand were you live, works great don't attract dirt easy to use and no significant wear to any chain I have used so far.

  2. Looking at the pictures it looks good, and apperently not to difficult for a national event if you familiar with the ground*.

    The ground seems to be likewise the one we have here, a lot of sand with steep up's and downs and roots inbetween.

    I think that many riders are not so familiar with the ground, it's all about not to loose traction and the right track.

    At the last event with likewise ground I was riding together with two guys from abroad one from Austria and the other from Finland, they were too not familiar with the ground and had some concerns. On a ground like this clutch is rarely necessary also hopping around won't have the same good effects, just smooth riding with some speed in a higher gear.

  3. Here a pic of different model years of the Ducati:

    50TT.JPG

    senda50_2.JPG

    If you really want to restore the Chispa you might look out for Ducati Mopeds of the mid 70's and you will find.

    If you want to restore a bike do your homework first which means take a Close look to the history read old

    books and magazines, then parts are no big problem ...

    • Like 2
  4. The engine is no miracle, it's a Ducati Mototrans also btw. used by Bultaco for the street model 49 GT.

    Anyway Ducati back then too made a trials bike too the 50cc Ducati 50 TT. Which uses the same engine.

    • Thanks 1
  5. Sounds too me like a silent bankrupty, too much talk no real clue and there so little bikes in general to sell to the market. I wish and hope the best but as longer the time goes without a solution as less good will be the result if we look to similar incidents.

  6. Hi you need a resistor (8) in the circuits between the switch and the stop- and tail light, otherwise it won't work.

    Elektrik%2BBultaco.jpg

    You can too use a regulator instead, which should have 6V and 45W.

    The original resistor (looks crude) is not available anymore:

    DSC08350.JPG

    • Like 2
  7. Before adjusting you should loosen the adjuster at the clutch lever on the handlebar completely.

    If there is still a spring at the engaging arm of the clutch no problem no if not please look up if

    the arm is retarded completely.

    On the clutch side of the engine there is a big plastic nut, just unscrew it, in the middle you find a screw and a secure nut,

    unscrew nut then adjust the engagement of the clutch with the inner bolt and a screwdriver so you have at least 2mm

    of play between the clutch and the engaging rod inside. Then do the fine adjusting of the cable again at the lever at the handle bar.

  8. I had similar problems with my Bultaco both side cases had cracks, due to hits through rocks, here the clutch side from inside:

    DSC07791.JPG

    The welding was a nightmare ... as mentioned due to oil which came up during welding, anyway got a homogeneous metal layer again but not nice looking surface, still the logo hat some break outs ... here the rotor side:

    DSC08213.JPG

    Then I decided to tried out 2K metal modelling masses which is heat resistant up to 300°C. That stuff is mixed together is for around 5 minutes soft like clay then hardens quickly as hard as Aluminium. Th allied masses can be milled, grinded like metal. I could reform the missing parts and then mill grind excessive material away.

    DSC08265.JPG

    A second rotor side case had a bigger break out at the rear under the clutch mechanism:

    Detail%2BSeitendeckel.jpg

    I could remodel the missing parts with this stuff very well:

    DSC08269.JPG

    After the paint job they looked very well again.

    DSC08305.JPG

    I would recommend this - we call it "Knetmetall" - its btw. very price worthy ... you only should know in advance how much you need and

    don't apply too much it is as difficult to process as metal. A rough underground - as already mentioned - is also important.

    • Like 2
  9. I have no real advice but there are two things you can do to get a better trainings effect. When you have clears an obstacle in training do something else which also should be something new an difficult. Riding obstacles you can is just for warming up the first ten minutes. Second try to train with a friend so you see how he rides and he can see how you are riding. You might too swap bikes in between helps too. As more training and trials you ride as better you get... normally... I sadly should have more time for riding...

    • Like 1
  10. Wish I could have seen a B model, they just weren't around here, so A model

    is the latest & not to many of those, don't remember any 250's after Model 92

    325's were here, (got to have a beast), they were & are arm pullers still

    as compared to our 199's (different head design I guess) as the later bikes

    seemed to be softer on the bottom but I think they would rev a little higher,

    bore, stroke, piston same, (later 325 cases used a longer intake skirt).

    Now we can use some of the Pursang pistons, ah the beauty of Bultaco engineering!!!

    Larry

    Yes the 199A gives you the feel to have the most power. At least in my personal experience. The 199b is more lazy in power output (in standard outfit with Femas rotor and big flywheel. I believe is Because of the heavier rotor. By using the flywheeel weight of the 250cc the engine rvs up much better. There a folks that have even lightened the rotor too but then the bike will takes ( with me on board) it's own way through the terrain.

    I have seen some photos and even videos from 199b models in the US, so there must be at least some around. I have no idea how they went there?

    You might have too look around in really long distances.

    I got my Sherpa through an ad in a lokal Italian craiglist. And I looked around around from 2006 to 2010 to find a complete one ... I had fun some ad's but mostly the bike wasn't complete or the seller had very high expectations about the worth in money.

    I even tried to get the bike of Fred Micheaud, but the seller then drew his ad back and denied the deal ... this was very sad ... I should have the photos left of this sadly not happens deal, (I can look them up and post them if there is someone interested). Anyway for the Sherpa I had to show up personal, which meant I had to drive 1500 km to get the bike. I did it, that was btw. really expensive but a kind of a short trip through the Alpes through Switzerland, using then the Bardolino Pass through Como and the pretty lakes there. Then a visit of Milano before going to Torino. After I bought the bike I reassembled it and stored it in the car. Then made a visit to Lingiotto in Turin, ( the famos house were there is a race and test road on the roof.

    hen headed back. The bike hot completely ready now, its at the workshop now for getting road registered...

    I believe to get a 199b you have to do some extra efforts

    • Like 4
  11. +1 on all posts about the cables and electrical wires, in doubt shortening the wires around 10mm to the plug cap and looking through the electrical connections is beside cleaning the points the first thing is I would do too (which you had done already).

    Last thing I would do is replace the plug, even if you have just mounted a new one.

    In my experience most twinshocks - at least the bikes I have - consume plugs frequently. It happens to my SWM, the Bultaco, Yamaha and even my Beta TR, that suddenly the plug isn't working proper. Sometimes it takes just a few hours sometimes it took nearly a three quarter year. I have no clue beside when the older type plug fitted they seems to last longer ...

    • Like 1
  12. I used my TY the first years a lot on the roads too. It was a 125cc and did the "job" quite well. I still had then the autolube installed which was pleasant for refueling at any gas station. But the trials tires wear quick. The gearing should be taller easiest way is to replace the front sprocket.

    I had 15 front so I could ride at least 80 - 90 km/h at a longer time. 100km/h were only possible with full throttle and wasn't so pleasant 'cause the wheels weren't balanced.

    • Like 1
  13. That is a Polish rider, Kristof Paluch, the engine seems to be the russian Minsk model which was mounted too to the early RTX I believe.

    • Like 1
  14. Nice sentiments about France, sadly in my opinion not true. Never have I seen so much potential and so little interest. You are correct re the forums and the adulation, however it just doesn t filter into trials and entries... very disappointing. I would have to say the Uk in answer to the question, usually doing their best with limited land in comparison to countries rich with ... like France. Further to the last post a French FFM licence here to ride trials will cost in excess of 200 euros similar in Spain I believe, whereas an ACU licence is a tenner...

    Have you had contact with French riders been there? I do not know very much, my French is sadly not good and it is so important to speak (and write right), especially with this certain ambiguous way that should have a polite and also bright undertone, (my description is probably lacking the right words).

    Anyway I think we should distinguish between competitive riding and riding as a pleasure and a social event, then too all the informal meeting of riders to do trials riding that has nothing to do with collecting points to be added at the end of the year.

    There are a lot of events around that never will be issued by print or electronic media, instead there are many people that do trials riding as a kind of exercise in groups or even alone, that's also very common in the Alp area. You will probably never here about them or have any possibilities to count these riders but this happens especially in France overall quite often, they this also in north Italy there they call it motoalpinismo. In French they call events like the mentioned: recontres amicals, (friendly meetings), like "on roule en Bretange", "TY day's", "TLR day's", "Journée de Roulage - Domaine x y z - "just to name a few. In my view it's still trials riding but in a different non-competitive way. As there are no lists and now results there is nothing count aka to list up.

    The better climate together with the huge local riding potential give this possibility in a different kind of trials riding.

    If you want to neglect them as these riders do not perform trials professional wise then the ranking will be clearly much different.

  15. I believe - not sure - but very many riders if not even most trials riders in percentage to the total population so I believe you will find in France, one of the most underrated country in trials.

    There is a real big community and there more then one handful of trials forums with a lot of members around,

    they have forums for Yamaha's trials bikes, Bultacos, classic bikes, Fantics, ...

    It's just a guess, but very remarkable ...

  16. The tank is attached to the side at the rear by two rubber bushes that are mounted to a smaller tube beneath the central frame tube.

    The tank should have a rubber cushion of high density foam rubber between tank and frame, then will be hold by the seat.

  17. Yes, of course, it's often useful when writing an article to quote from a previous authoritative source but there's a vast difference between quoting a few lines with an attribution to the original author and the apparent wholesale plagiarism of this case.

    Apart from collaborating with him on the original book, I was a close friend of Don and, knowing him that well, am surprised at the suggestion that he would have given permission for his work to be copied in this fashion with no mention of the original book or author........

    gra

    So in the book there are not only some sentences or a paragraph copied, instead whole article?

    I don't have the book from Steve Saunders ...

 
×
  • Create New...