mrb505

If your talking about ignition side you might not want a m49 ( VAR41-9)flywheel about 2.4kg against 2.8kg that you probably have now (VAR41-52)) where as the 250 later flywheels (VAR41-51) m124 on are around 1.7kg. Well that's from my scales they probably vary a little bit. A lot of 250/350 Alpinas (m137 on I think) had the VAR41-51 flywheels so it might be easier to find one from a Alpina as there seems to be a fair amount of Alpina parts on eBay in the states.

Part no.49.00-068 for frame no. up to 1832/ part no.80.00.068 for frame no. 1833 onwards

Ah that what it is a Y not a V thanks Bought some once when I couldn't get a S in town didn't notice any difference in the running though

Doesn't the V on the bp5ev spark plug just mean a v'ed out electrode

Yes they are the models I call Soler as wellThe later models are nice bikes but the earlier models up to and including the Soler models were a piece of art in my opinion

I suppose you could say that Paco is Bultaco Nothing really special happened after the Soler Sherpas in my opinion

I've also been using IRC tubed (49,125) and tubeless (183) with no problems on my Bultacos

Most have probably read this but it's a good read like the rest of the site. http://www.retrotrials.com/exclusive-ignacio-bulto-interview-20122.html In my opinion the last true Bultaco would be when Paco still had control of the company

All the steel bottom yokes I have including M49 are M8 x 35 mm x 1.25 thread hex head

I've got one on a m183 it runs really well, the jetting should be close on a 158 Main 103 Pilot 33 Needle d36 clip in the middle Needle jet 266k Slide I'm not sure no markings that I can see but I think it's a 60

Banana, fork caps, wipers, carby, levers, ......... Nice bike but how about a photo of your 69 one

What's been done apart from the 74mm gasgas piston to make it a 280 has the crank been altered ?

A 198 front wheel that I just measured is about 14mm, brake drum protuding from outer edge of the rim

52 mm or 2 inches This mob are good to deal with for Amal parts http://www.trialsbit...php?cPath=34_35

The needle is a U size Yes genuine Amal from Burlen UK I have had this carby on and off more times than I can remember tried different jetting, blowing it out numerous times, ultrasonic cleaned it always runs like **** they have no tickler hole, the new slides have the 4 stroke choke cut out and different inferior circlip arrangement top of the carb came with choke cable hole and I think it might have a casting fault in the pilot circuit, the old carby is worn in the bore but still runs okay so I'll will get it sleeved I'm currently running a old 248 mikuni flange mount off some old jap bike on the M49 and it runs pretty good but I like to have it original

Replace the needle U and needle jet 106 they are the parts that wear in these carbies fairly regularly The other jetting in your carb Amal 627 should be pilot 20 main 150 and slide 3.5 When adjusting the air screw I adjust it out till it runs fastest then scew it in a touch just where it starts to slow down I like it a bit rich on the pilot I wouldn't buy a new Amal they are rubbish the old ones are better, well the one I bought for my M49 is

Thats standard m92 gearing If your running 11/46 4:181 520 pitch sprockets its slightly lower than standard 13/52 428 pitch 4:1 Let it lug its amazing how low in revs these will go if in good tune it feels like you can actually stop for a few micro seconds then take off again

I'd always thought the rim was supposed to sit to the left, all 4 sherpas that I have do. With the pinch bolts on the fork leg I leave them loose, tighten the axle then bounce the forks up and down or have a bit of a ride, to let any fan or taper out of the forks so they find their parallel position then tighten them up.

Yes a nylon one the same as the steering stops

you have some very nice bikes Bondy must be hard to decide which one to ride

Yes it is or was brt650 is just taking the p*** He's just trying to cover up his creation the Hontaco or commonly known as the Frankentaco

And a after photo, Red line is where I'll put a rubber pad

Here is a before picture

There is not much gain in ground clearance if any I've just done a 183 frame and the rear of the plate is the same height as before, at the front the plate is higher but I had to grind off,weld,drill and tap a new gearbox sump hole or the plug would have been lower than the plate, luckily I had the cases split at the time. I'm sure you could lift the engine, alter the swingarm pivot,exhaust etc etc and gain an inch but its a lot of work. I think with my 183 I should have belted the tubes back down bolted a ali bash plate over them and went riding.

Come on Brian wheres the photos of all this *******ry (b@stardry must be a naughty word in the UK)