smelling123

Mud mud mud

ANyone know how/when to enter this for 2015????

Can you post link?

Rockshocks are great but a shade over your £250 budget.... Steel Falcons very good and under your budget.

Never even touched the engine hewson! She's ready for a cosmetic rebuild some time soon but no rush

Here's mine, used regularly in twinshock trials in UK for the last 4 years. Unrestored but upgraded the suspension. https://www.flickr.com/photos/76022002@N08/7035234511/ https://www.flickr.com/photos/76022002@N08/6889224476/ Great bike, 5 speed, seems to have some `left overs` used on it - steel brake arms instead of alloy etc.

It's about the journey, go for it, tell the family it's an investment

Ye should be

https://www.flickr.com/photos/76022002@N08/15607628038/ You can see em on this piccy

I got the ossa ones 2nd hand (£20 from memory), there are plenty options, apico are nice. They're a bit more comfy than the standard ones and a bit lighter, I'll take a pic

I used New Ossa alloy ones but it needs new brackets, you can get the brackets off ebay for about a tenner

Try this... Mikuni carb settings VM26 2.0 slide 130 main jet 35 pilot jet 5DP7 needle O8 needle jet Running 40:1 oil ratio.

40:1 putoline fully synthetic works great

There is a head insert that cures it (slightly lower comp ratio - I read this on someone's blog

8 thou is very tight, I'd suggest this will cause excessive combustion turbulence leading to detonation.... If you look at what modern race engines eg rs 125, and engines making more power from that period eg tz 350 they're running bigger squish gaps than that (at least the guys who are winning). Good luck with the racing, great fun bike to ride.

Good point, thanks, now removed.

Thanks iconic558. Its still a fair bit heavier than Vestys x-lite... On the diet - lots of little things that all added up:- Titanium front wheel and swingarm spindles, alloy rear spindle. Alloy Rockshocks 250 clutch-side flywheel lots of titanium fasteners (including engine bolts) alloy torque arms, brake and clutch arms 1.6Kg lighter exhaust Alloy footrests Alloy kickstart Next step is a Comerfords replica swig-arm as the originals are really heavy.

Quality. Try this... http://www.youtube.com/watch?v=P2y9h1ONFw8

Yes Nigel, made from stainless bends. Bit heavier than Idve liked but still lighter than the original.

Same bore and stroke as a TZ350 which run at 30 thou (0.75mm). Its good to get the squish right but you may need to drop the compression a little back to standard (although in my opinion TY175s benefit from a little higher compression - makes em a bit better low down and with such a big flywheel, theyre still soft enough). cheers

Finally finished my 199b restoration. Not for the traditionalists but built to ride in 'modern' twinshock events..... Hope you like it... https://www.flickr.com/photos/76022002@N08/15858619162/ https://www.flickr.com/photos/76022002@N08/15833432376/in/photostream/ https://www.flickr.com/photos/76022002@N08/15859245115/in/photostream/ https://www.flickr.com/photos/76022002@N08/15671718848/in/photostream/ Lots of alloy and titanium, 9Kg lighter than my standard 198a so quite happy. Started really easily so lets see what she handles like in a trial.

Hi, Its not a Sherco pipe. The front pipe is made up of 316 stainless steel formed bends (available on fleabay) 90 degrees and a 45 degree one where it goes into the midbox. Midbox is the standard Sammy Miller one. alloy silenced is WES for TY250 with a small link pipe between the two. The frontpipe was made to fit the bike not to a particular design - as you say steve, the length will help the bottom end. I am a bit concerned about the inner diameter of the link pipe and silencer. The smaller this is, the higher then backpressure which can improve performance but if its too small can cause the engine to overheat when revved. Im going to try it and see how it works (the smallest diameter is the outlet of the end can - and as that was for a TY250, I dont think I have a problem). I used to build expansion chambers for some classic racing bikes but of course they wont fit on a trials bike....

Not original but couldve been made in the day - Sammy Miller mid box and TY250 back box. https://www.flickr.com/photos/76022002@N08/15607628038/ https://www.flickr.com/photos/76022002@N08/15173317853/in/photostream/ https://www.flickr.com/photos/76022002@N08/15794317832/in/photostream/ A bit of work but Im happy with the result - cant comment on the sound yet...

For some reason (I suspect fuel) my bikes seem to need richening on the pilot jet. They seem to need a good flood to start, so on a carb with no tickler, lean the bike over for a few seconds and starts fine. Not just bultacos, my bantam and montesa the same... Strange, I think it's modern fuel.

Is the torque wrench in tolerance? If it's not been calibrated you could end up tightening to 6..... ;-)