Bultaco

I cannot find a front brake stay for my 159. I think the material is 4mm thick aluminium. Does anyone have one they can measure approximately and add those dimensions to a picture if they are able so that I can fabricate one. Alternatively if anyone has a spare hanging around I would be happy to buy off them. Cheers, Neil.

Hi: As many of you know, the last years of Bultaco, the factory was in the hands of the workers unions operating as a cooperative. Production of the 199B models was very chaotic and nobody is sure which frame numbers really are the first and the last, being the last, most probably the last bike ever produced in Bultaco. With a group of friends we are trying to find the latest Bultaco 199B number we can, actually doing a research in facebook and Spanish forums. The latest frame number we have documented at the moment is JB-19914920-B Maybe you have a later frame number? Please let me know!

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Hi All Hoping to benefit from your collective experience. Getting on OK restoring my Sherpa 198A and am currently working on the wheels/brakes. Front wheel all sorted and rebuilt. On the back wheel though the steel brake liner pressed into the hub has a highly polished, almost mirror like finish. I thought this should be roughened up a bit with some wet and dry before reassembly. Problem is the surface is beyond glass hard and wet and dry doesn't seem to touch it. I've never personally come across this before. Any ideas on how to get under this hard glazed surface, or should I just leave it as is? The bike was a non runner when aquired so never ridden so no…

This restored ? Is in my opinion questionable the same bike ,, model 480510 sold as easy rider bike on bohamas auctions , do you see the differences , and on other side it has mk2 up pipe exhaust ,, I working on 48 engine , and started looking for a frame , some one on line said it was a copy , and not the original , ridden by Fonda , , so I found clip on handle bars , chain guard , front wheel hub , spokes different , fork tube has brake tang , seat , little torn , ,, and if mk3 why mk2 exhaust up pipe ,

My petrol tap has failed and was wondering if these are diaphragm operated???? The flow of petrol to the carb just stopped. Tank is full of petrol........everything is clean...... Thanks Borderlord

is this normal? piston at bottom dead center

Hi all. I joined this forum recently as I have a 350 Sherpa 199 (red / silver / black) that I want to restore to use for a but of fun (i.e. not concours). I've gathered plenty of experience rebuilding / building bikes over the last 40 years or so, but do like to have a manual when I do an engine for things like wear limits on big ends / bore / crank runout / torque values etc., ohh, and a decent diagram or exploded view of the gearbox. The bike has had little use and is pretty much stock, bar the universal plastic guards. It was 'parked' in '93 because the clutch was slipping (and I was about to go work abroad) I stripped and boxed it. Having retired 3 years ag…

The piston diameter on my 198B is 73.75 giving a size of 256cc. The underside of the piston is stamped DINAMIN, and although the piston and bore are in good condition I wonder if anybody knows if this was a fairly standard mod just to maximise the capacity rather than being overbored so many times over the years for some strange reason. Also does anybody know what bike would this piston? might have come from? GasGas perhaps?? The InMotion site shows piston sizes up to 73.00 only. Thanks.

Does anybody know if the blue colour on the 199A and 199B are the same, or is the 199B a different shade of blue? Especially the blue on the fork sliders and the yolks on the 199B Thanks

Has anyone tried these, and are they a bolt on or weld on? http://www.frankiemountain.com/en/compra/footpegs-bultaco-sherpa-bultaco-alpina-footrest-foot-pegs-bultaco-2084

I’m restoring a M159, how are you guys going about cleaning the inside of the pipe and muffler? Caustic soda? Are there other ways that work well? mike

Just bought this fixer and not sure about the year and some details if someone out there could help and recommend upgrades. Noticed brake is on left side and thought they were imported with it on the right after 85? also not sure what those shocks are from. have some rust on the upper fork tubes can that be fixed? Many thanks in advance.

Hello, I’m trying to adjust the clutch on my bultaco sherpa model 92. When I try and screw and nut they’re very tight, but also the whole clutch system spins with it. How can I hold it all still so I can loosen these and re set them in the right location.

Spotted this on the web while searching google for pics. The owner did some really nice work with a list of mods that include a self made tank that is an inch or two shorter. Pretty cool bike that looks like it works really good. If you are on this site I just want to say nice job!

Has anyone painted the blue 199 tank? My tank faded badly as many of these blue tanks do and I'm not sure if this plastic will hold the paint well. I'm also concerned about sanding this plastic in fear of making it look worse.

Hi, Been looking over your site and lots of good info. I'm fixing up a 199A and it does not have a head stay/steady. I ordered one from In Motion, but I have two questions. First, is it really necessary and do I need to re-torque the entire head bolts and nuts? The guy at In Motion said only do the two that hold it onto the head, while a shop here in the States said you should loosen them all and re-torque. Not sure what to do.

Hello all, I have been riding a 1966 250cc Bultaco Matador in the USA AHRMA trials Classic Class for some time. My Bike handles OK on the milder events but when the going gets tough its a real pig. Any thought on how I can get the bike to behave in the rough? Thanks, Dave

Hello, I started the project of rebuilding my my 1973 Sherpa. I’m quite young, without much previous knowledge. Regrettably. I’ve got the bike all apart. I’ve had the frame powder coated etc. However after taking the engine completely apart. With my lack of experience. I’m beginning to struggle and get overwhelmed. My hopes is to learn from this project and gain skills from it. So I don’t want to give up on what I’ve started. I’ve been using a few different manuals such as the Haynes one. I’ve bought some parts to replace, such as new gaskets, electronic ignition, clutch plates etc. However I don’t really know the key parts that should get replaced in a rebuild. The gears…

Hi all just refurbing a 340 sherpa and been removing a lot of brackets and mods that have been done to frame and swinger, the rear shocker lower mountings have been moved and are not the original, just single plates, has anyone got some measurements and pics of the correct style and position, appreciate any advice. Cheers