Classic Trials

I'm hoping that someone can give me some advice or pointers on how to solve a carburation problem on my and#39;53 350 matchless which is fitted with a 26mm MK1 concentric carb. The bike had been running fine but I started having problems on her last outing when she started 8-stroking and "hesitating" when I opened the throttle. My initial optimistic thought was she was running rich due to a combination of higher altitude and exceptionally warm weather. The problem was still there when I got her home, and on further examination I found the nuts holding the carb to the manifold (head) had loosened a little, and that she was drawing air (weak rather than rich???). I'…

Does anybody know the amount of oil a Sammy Millar tiger cub under tank oil tube / tank holds ?

Does anybody know the oil capacity of the Sammy miller products tiger cub under tank oil tube/tank ?

Hi, I'm going to change my rear wheel from a 19 inch to a 18 so I can run a softer compound tyre. I like the idea of a Michelin xlite. I've only found tubeless versions, do they do a tubed version? Do I just run a tube inside like a normal tubed tyre or do I need to do any modifications? It's on a Norton 500t so it quite a heavy bike. Thanks, Pete.

Hi. I have an OSSA MAR that I want to compete in local twinshock trials events. Can I ask whether the front number board needs to be any particular colour? I ask as on my road race bikes I have to use certain colour backgrounds; green for 250, blue for 350, yellow for 500, etc..thanks

Hi all. I'm new to twinshock trials and have a 1980 ty 175. I live in redditch, Worcestershire and I'm having trouble finding somewhere I can compete. Can anybody help me please?

I' am "fiddeling" with gearing of my bike (Aprilia TXR) to find the ratio that fit's to my riding /personal taste. First try was: 42 rear + 12 front which was to high, 42 rear + 11 front was too slow, 42/12 = 3.50 42/11 = 3.82 Now there are two possibilities: 40/11 = 3.63 44/12 = 3.74 (with a half link) Which won to choose: a smaller rear sprocket won't be hit so easy accidentally then a bigger one. Then again a 11 teeth front sprocket will wear faster is difficult to get thus expensive compared to a 12 teeth. What would you choose or any better ratios?

Hi,New to this site done twin shock trials (badly) withTY175 but I recently bought a otter frame and wheels and a set of C15F cases and crank with alpha big end got a set of wide ratio gears from a b40 wd which I believe will fit in.considering putting a big bore barrel ie.triumph 500 piston any other suggestions or comments,will fit electics world ignition.

Hi Guys I will be converting slowly royal enfield bullet road model to trials bike . I know in trials bike world 18 inch rear wheel is almost standard. I am thinking of putting 4.0 x 19 Trials tyre on my Royal enfield bullet. as they are availble from vintagetyres. http://www.vintagetyres.com/item/571/400-19--400x19--ensign-trials-tyre--universal--s-r advantage i see i dont need to change RIM/spokes and tyre price is reasonable as well. currently i dont have plans for any completetion. what are the drawbacks of using 4.0 x 19 tyre . > any problem in riding if using 19 Inch type > do i need to make any changes to swinging arm > any rest…

Hi, I'm trying to get an age related registration plate for my 1976 TL250 Honda and I've come across a stumbling block. I need a Nova reference number. I bought the bike about 4 years ago from a shop on eBay and I imagine it's been imported from America but I can't find my receipt. Has anyone had any experience with this? All the forms I can find on the HMRC website seem to point to the importer to apply for the Nova declaration. I phoned the HMRC helpline and they told me I need to fill out another form but that asked for a previous registration number......which it's never been registered so doesn't have one. This doesn't seem like it's going to be easy. …

Hi, Could someone please help me with telling me the 2 stroke oil ratio on a 1969 Sach 125cc? Got to get it running!! Dave.

Lovely sunny day at Griffewalk Farm Hope you enjoy the photos

Hi all, I've just acquired this bike and was told it is a sprite. I have no other info at all & would really appreciate as much info as possible. The engine is a Sachs, engine number 5499389/122 1251/5A Thanks in advance. Dave

Hi - I am reasonably new to the world of trials riding at the age of 14; and since buying (with the help of my parent) a twin shock Honda 125cc trials bike it seems a little underpowered. Baring in mind I'm not the smallest of teenagers I was wondering if i could upgrade to a 150cc Fantic 200? The Honda needs a few things doing to it and it could cost around £500 to get right, would it be worth upgrading to a Fantic 200 (If I am able to) or would it be worth getting my bike properly working? Thanks, Dougie

Hi Folks We, I and some other guy, are interested in finding out exactly what these parts are. The James (1955) parts list, see image, lists parts just for the K7C trials bike. We need to know what the dimensions of the extra bits are? Does anyone have these bits for us to measure, or be sent the dimensions. Chiefly the extra holes in Part 36, the dims for the damper rod and what is the difference for part 35, from the normal part (5)

Could anybody from the Truro area tell me of a stockest/ bike shop where I can send someone to pick up a couple of bottles/ cans of castrol R or similar please. Thanks

Hi Guys I would like to know . how to convert Triumph T20 Road Frame to TR20 specification I believe swing arm will be wider/length .. Is there any changes required in the frame. if someone have some measurements that will be great. any info will be helpful. Regards

.... in The Eagle comic of the 9th of July 1960 and bought me a copy of it.

hi all, it's Dante from italy, i'm new on a pre ' 65s trial, so i need some kind help to know more about oil / fluids change on my 1962 Triumph Tiger Cub trial... could i know more about the plugs on the crank case since i don't want to do mistakes, thanks in advance, D.

Could not make it to the event but need to know what is happening, any one any info or pics please...