craig10

Hi Guido, he is probably talking about the small chamber with the spring loaded diaphragm on the side of the carb, it acts as a basic sort of pump linked to the air pressure in the carb

A TYZ wheel will go straight in to a Pinky front end, don't know about drum brake model though. I know a guy who used to borrow his mate's one to get his Pinky through the MoT...

1948 style...

To echo scottishsteve's comments, the AMCA Wobblers clubs have nice easy B routes you could probably get a chair around. You'd need to be either brave or very handy to get an outfit round an SACU trial B route. There are Wobblers clubs in Montrose http://www.mdmcc.webeden.co.uk and the East Neuk of Fife http://eastneukwobblers.webeden.co.uk

Wfo's method of tensioning is the way I normally do it as well. Chappo, try chapping down on the rod from the top after removing nut 11, sometimes that will break the lock of the wedges. The locknut doesn't need to be rived up, that's how the wedges jam as they damage the surface of the rod. I don't know the torque setting but lightly nipped up is fine. Craig

The wedges are in a hollow in the casing, parts 10 (2 off) below the nut 11 with the 14mm head. You slacken nut 11 which releases the wedges 10, the spring 5 pushes lever 4 up, forcing rod the rod 6 up. This rod is attached to the bottom of the movable blade 3 which bows out (the top being fixed) so tensioning the chain. Once tensioned, the nut 11 is nipped up, this causes the wedges to grip the rod and hold it. It may be that the wedges are missing or not fitted properly, the angled faces should face each other. If you need parts diagrams, go here http://www.serviceho...om/parts/lookup then navigate your way to Honda models of 1986, scroll down and you'll find the TLR200 there. Craig

I had an early 01 which had an iron liner, Birks told me only those early models had the liners so I'd imagine an 06 would be Nikasil plated. If it needs plated I've heard Langcourt are good.

With the spacer under the barrel it's probably got an xl185/xr200 crank fitted which would boost it to 145cc on the standard 124cc cylinder. As dalfetta says, that's a head code from the cb/XL models 76-78. Where's the 220 mark? A picture would help. Craig

I skimmed my mate's one down from the standard 117mm od 2.124kg to 100mm od 1.68kg, so that's just short of half a kilo or 1lb but can't say I noticed much difference, although I'm not what you'd call 'gifted'! How much did you take off? I think Birks recommends 1kg but don't quote me on that. Couple of 'after' photos, iirc the unmachined weight starts just at the bottom of the radius on the magnet rotor but I cant find any 'before' pics.

Remember to put a SORN on it if it's not going to be fully road legal, ie tax, insurance, MoT or they'll do you for it.

Maybe made in 01 but lay around at the importers for a while before being registered. As totty says, you have to fill in a form for a replacement v5, last time I got one it was £25 but may be more now, also used to depend if you lost it or were never given it.

Give Nigel a call at Birkett Motosport, he has vast knowledge of mono Yams and the work-arounds

Some 'light trail riding' at the 2007 Scott Trial... http://www.trialsphotos.com/photo/NDcwNjUyZTM0M2ZmOWY=/Allan-Adamson-At-Whaw-Bridge-2007-Scott-Trial.html

http://www.vintageracewear.co.uk/FANTIC_MOTOR_tshirt/p782501_8753867.aspx

An experienced worker at a local engineering firm offered to size the small end bushes on a pair of Guzzi conrods for me using a honing machine. He didn't rate trying to do it with a reamer due to the difficulties in keeping it square without making a Rupert Ratio style tool. He also said if the fit is right the pin should slowly fall through under its own weight. If it drops through like a stone there's too much clearance.

You'd be making a real statement turning up in this http://www.ebay.co.uk/itm/281203747108?ru=http%3A%2F%2Fwww.ebay.co.uk%2Fsch%2Fi.html%3F_sacat%3D0%26_from%3DR40%26_nkw%3D281203747108%26_rdc%3D1&clk_rvr_id=547141698777

Yes, first outing since July 2012 Let us know how you get on John, there might be a lock ring or something that's gone adrift. Just as well you weren't out on Clunes Moor...

It's not a bayonet type fitting is it John, ie push the tap in and turn it a bit either way?

Saw a Gollner TLR up at Alvie a few years ago, think the lad's name was Gordon from NE Scotland somewhere. He used to be a regular poster on these forums but not seen his name around lately. I expect Big John will know who I mean.

It looks like someone has cut the cable where the wires come from the harness to the thermoswitch. Normally the wire ends coming from the harness would then be joined to make the fan run constantly. The thermoswitch is just a switch like a lightswitch in a house, it opens and closes at preset temperatures to stop and start the fan.

I suspect the internal ratios are all the same on these motors although I haven't had a look in either one myself. Maybe the TTR engines have their own gear sets, a quick look at the online parts fiches might answer that.

As said, it's more likely to be where the shift shaft engages with the selector drum behind the clutch drum

Not mentioned on the ACU's ineligible list for the Trail Bike Championship as yet http://www.acu.org.uk/news/2012/12/2013-trail-bike-championship/ Don't know if you can still ride 'ineligible' bikes out of class for no award though, at least you still get a day out on the bike then.

Scorpa 125 4-stroke, you can start them with your hand when you're on the wrong side of the bike on a camber. Don't think there's many you could do that with. The Betas are a left foot kicker which some can find awkward.