Four-Stroke

The fuel tank on the 4t is only just over two liters but it does seem to use quite a lot Has anyone worked out if the new four bangers are really thirsty What about the honda? How much does a 290 2t use on an average trial? I have been on reserve a few times and run right out once i recon reserve is about 10cc watch out

it will be interesting to see this bike ,it sounds much more like what was expected of the new generation 4ts

As they say apicture is worth a thousand words.

Just read artical about the future of the fourstroke, and wondered what sort of tripe you could come up wi bet it's nowt to do wi bikes

I have a 2011 Beta Evo 4T gearing question. I find first ok but second and definitely third way to tall. What do people do, drop one tooth to a 10T on the front sprocket? happy for any input

Hi guys, anyone know when the sherco is going to be available in the uk, or even start production? This may seem a stupid question, but is there any risk of it runing into 2006 and becoming an 06 model? YD Richard Longstaff GD

Hi 1st off this isn't on a trials bike but I do compete on a GasGas and trials guys seem to be a bit more clued in on engines than the general biking fraternity so heres my problem. I've just replaced the engine on my sons pitbike with a brand new unit re-using the old carb and exhaust, engine is the same type but not same make so may have differnet spec cams, valves etc. The old engine ran fine with this carb and the carb is clean. When you blip the throttle wide open from tickover it bogs down and trys to stall but if you open the throttle a bit more gentley it'll rev quite nicely. Riding wise it pulls fine as you don't really go from zero to full open but the plug …

Hi all. I am trying to build a trials bike using an engine from a 1978 Kawasaki KL 250. This build was inspired by some fantastic pictures posted on this site by Booma.... My problem is, i am not using the same frame he used and am having trouble getting the carb to fit in the frame. My question is... Can i lengthen the inlet manifold? If i can lengthen the tube from the carb to the head by about 30mm it will make fitting far far easier. The problem i have is, i have no idea what effect this will have on the mixture and running of the engine? If anyone has any knowledge of this subject? I would greatly appreciate the help. Many thanks.

My wife has a GG 200Pro, and loves the thing. However, she has one real problem with it. And she'd KILL me if she knew I was divulging her secret here. But I'm gonna anyway. The problem is her short, girly legs don't have the strength to start the stupid thing, especially when cold. She was fine with her old '96JTR 270, but with the smaller bore 175cc there is a marked increase in compression it seems. Couple that with a shorter kickstart lever AND shorter distance that lever travels, well, I am often pressed into service to press that lever into service. This annoys, frustrates, embarasses and humiliates her no end. She's done a stretch of leg strengthening exercise…

Hi i was up at a local big trial and i seen a 2015 beta 300 4t what is the price of parts on beta, iwas told they where expensive is this true i have heard they are better than the montesa 4rt 260 cota. Could you give me your opinion.

I am right in thinking that a 4 Stroke engine is normally used for speed, rather then power? So if a four stroke engine is tuned for speed, if it would be used for trials it would be untuned to get a mixture of both power and speed? About the other topic of hating the four stoke, what that all about? They might not look the business, but when it comes into riding they MUST be better or near as good as the 2 strokes. They have to be, riders can't go back down the ladder of technology, after all its taken years to get up it since the 1980's when 4 strokes were in, now with it being in 2003 the technology is far better then it was now. We have a greater understanding of en…

Don't know if this has been posted or not, but it's a pretty cool video of the 4T GG in action.

I was wondering what the diameter of the front pipes are on the different 4 strokers, My new 08 scorpa 250fr is about 40mm

Is the paint finish on monty repsol wheels a matt,semi or full gloss finish

What do you think gas gas will say now the 4rt is the worlds best trials bike there will be loads of people saying raga could of retained his champs if the final round had not been cancelled i feel sorry for bou he has been short changed,the spark has been taken out of his win, When he wins again for the next few years lets hope there will be no contraversy

hi what oil would be fine for a scorpa 175f? i see they recommend motul 300v fully synthetic, but i cannot get this locally. i take it something like shell advance ultra be fine for this engine as it does not work hard anyway, and i can get it locally....better price too. i want to use good oil, but are some of the recommendations overkill? given it not a race bike.... cheers

Hi Chaps, I have a twin shock Bultaco 199b that I have totally restored, my son and I have practiced on it most days (lack of work) and a lot of enthusiasm as we are new to this world. From the start, my son is very good so I thought I would upgrade to a newer bike. I would love a four stroke, can you guys give me advice? Will this work for my son and me to have fun on? And maybe for him to compete on? Also can you tell me the pros and cons? Many thanks. Martin

Looks like the monty 4rt has got power after all! I dont think an under powered heavy bike with the extra weight of a chair and another person could win a national trial do you ? I think the doupters should take note,4 STROKE IS THE WAY TO GO.

http://www.honda.co.jp/HDTV/HRC/WCT-race2004-rd03/

or lack of , as pictured in tmx . i gather a few have had a little play now its here , with the first batch sold out when they get here, why is nobody getting excited or talking about it? whos got one on order? whos been to birketts and seen it?