fourex

This is info from the 1980's, pretty sure MJ was 100. Carb Jetting.pdf Engine Oil.pdf

Lowside, as I posted previously, I have one that is new/unused for $40 AUD if you decide that is what you want. I also have a Two or Three Trial used slow black tube for $10 AUD. So $50 AUD + Postage from Australia to wherever, just saying.

Don't know for certain but Domino would be silly to confuse us between white/black tubes on their limited throttle, so my guess is "fast throttle". Buy their "limited" throttle and their "black" tube and you've got all bases covered in my opinion. PS: Check photo, definitely fast white tube.

200 Minarelli - 1330mm?

Domino did once make an adjustable throttle, don't know if they still do however. The HellTeam here in Australia had them available a while back. https://www.thehellteam.com/throttle-domino-variable PS: I bought one years ago that never got used and still in unopened packaging, can sell it for $40 AUD plus postage if anyone is interested.

Parts manual images attached for 1974 MAR mk2, don't know dimensions other than ridiculous 12mm internal diameter. Looking at the parts manual you need spacer tube #106659 and two aligning spacers #105604 for the rear wheel. Google those part numbers and see if anything pops up, best of luck.

Yes, they are Bernie Schreiber bars by Answer.

65-70Nm according to my Fantic 300 manual.

Yes, It appears that way to me. DRM, pump your front tyre to something like 20 psi now, check it again in 24 hours. Figure it out from there. Simple like me. First time poster, we've probably been duped.

You can't be serious with a question like that, surely?

Yes, modern Trials bike bars are fat in the middle (28.6mm) and don't have or need a cross brace. I just searched your previous posts and see you're possibly looking for bars for a Sherpa T, you need to look at 7/8" (22.2mm) bars for these older bikes that have standard top triple clamp. Many different brands out there and they're all good as far as I'm concerned but, if you're looking at the Renthal website then look for 7/8" Trials bars, 742(4.5"), 660(5.0"), 735(5.5"), 768(6.0"). They all come with a cross brace.

This is pretty cool from the Renthal website, a comparison tool for bars, you can clearly see all the differences between the two bars you select. https://www.renthal.com/worksfit/

You're on the money there Larry, maybe cyclesavant? David Snyder perhaps or similar. Pretty sure he was out of Oregon. https://www.ebay.com/str/cyclesavant

There's no one-stop shop for anything for old bikes unfortunately, got to search the world, these are some sites I've found over the years for Fantic stuff, https://www.delaytrial.com/fantic/ https://www.equipementmotard.com/moteur-minarelli-c-219_231.html https://bosisiomotori.it/it/99-trial-200-tx-350-1980 https://www.facebook.com/groups/hardtofindtrialsandaircooledmono/ https://www.ebay.com/sch/i.html?_nkw=fantic+trials&_pgn=1

PM sent.

Just clamp a bolt of the appropriate size in your vice, set it up so just 1 mm or so of sleeve protrudes past the end of that bolt and slowly hand file, that's what I did from memory.

I had the same issue with a pair of Magical shocks I bought years ago for my Fantic twinshock, they were 24mm spherical where I really just needed 21mm. I just ground 1.5mm off each end of the sleeve, easy enough and worked a treat. Both 21mm and 24mm are common sleeve widths. Also, I think Magicals are glorified Betors, or something like that.

Colin, my '74 MAR mk2 has electronic ignition standard, hence the question of others why they went to points in '75. Check out the Vape site, it looks like they can solve your problems, if not others will chime in. https://www.vape.eu/ossa

I don't think Electrex World does anything for Ossa, but looks like Vape do. https://www.vape.eu/ossa I'm curious, why did Ossa MAR's originally have electronic ignitions and then why revert back to points, were their electronic ignitions unreliable?

What about a flywheel weight, I think this one is good for your 2020, says >2013. I put one on my '14 300, made a difference to my liking, additionally I use the map switch to dull things down more when things get extra slippery. https://www.thehellteam.com/flywheel-weight-kit-hidria-s3-gas-gas-2013-ext-fix.html

carl, a lanyard kill switch is exactly what ken is trying to fit to his Sherpa.

Yeah, another vote for 2009 Cadet 80. I think your chain tensioner block might be upside down from those pics. https://drive.google.com/drive/folders/182B1ZqHM1yyfhsXzanWQxJta5PBQCHY8

Yes, I believe it's the suffix, such as AS/BD/BS/CD/FD/RD that denotes whether it's got an air screw or fuel screw. Don't know which is what, other than BS being fuel screw. As far as "turps" is concerned, I'd stick with the original PHBH 26 BS, because we at least know what the original jetting specs were, and one can make minor changes from there if one doesn't like those settings.

Original carb on Fantic 300 Twin Shock is Dellorto PHBH 26 BS. Refer attached, mine still runs very well on these original settings in Australia on 95 or 98 RON unleaded petrol. I've bought parts from these people with good success, www.dellorto.co.uk PS: Not an air screw on the PHBH 26 BS, but a fuel screw..

Ask this question in Bultaco Forum to get best answers. You will need a slender shock to avoid chain interference or at least a shock that can be inverted. What appear to be 1980's Gas Girlings in your original post in "Bultaco" have an overall spring diameter of roughly 50mm, some shocks such as magicals are 56/57mm. Falcon shocks are slender at 50/51mm, do some more research.