Four-Stroke

Hi there. Decided to give the four strokes a bit of a go. I think it would be a good choice considering the forthcoming welsh winter mud fests that seem to plague most events. Was just wondering whether the 08 Beta 4t is better than the 08 Sherco 320 4t. What are their strengths and weaknesses ? I've heard the Sherco clutch is a bit of an on/off situation. I know I have left out Montesa in this comparison but I simply can't afford a recent one.

Evening all. Got my 4rt on it's side and it filter out. Her indoors went to the local road bike shop and picked up a litre of oil. She came back with silkolene gear oil light sae 75. On the back it says gear oil for wet or dry clutch transmissions. Crankcase rating sae 10W/40. Is this right. Chap in shop said it was the right stuff?????

Hi all, After the first year of use, I think we have more clear the arguments of the new 4S machines. I own a 4RT with just one year old and I would highlight this points: - Flawless bike. No problems at all in this first year. The bike keeps intact its performance in one year. - Great response of engine, always constant in any situation. - A little bit heavy in front, difficult turning. I got more tired with the 4RT than with a 2S. - Great suspension. - Not cheap to do maintenance: so frequent oil changes, included oil filter, made the bike significantly more expensive to maintain than a 2S. The final point: Would I buy it again? Probably not. The main rea…

Well here we go pros and cons of cv carbs??? in my experience (limited i know)dont take the top off the carb the diaphram goes in about the size of the carb top,but after fuel has been under it sweels to about twice it size and they where about 50 quid ten years ago,so when you trapped it putting it back in and split the thing it cost loads, will the new beta carb need regular cleaning?? i bet it will. i did have a few little tricks for re assy,but will save them for later..

Hello, afther a 2017 Beta 250 factory 2 stroke i bought a 2017 montesa repsol 260 becouse i love the look off the bike. Yesterday first day at the montesa and i must say it was hard to ride. I will give it a while but when changing back to my beta 250 it felt super light and super responsive. Zapping over a log, turning, hopping,....have to learn all on the montsa or....stay with the beta. Greathings, Luc

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…

I have writen about this allready on another page RE500s hot start mod on the sherco 320 4t has absolutly transformed the hot start issues with my bike for no apparent reason my bike would refuse to start ,sometimes taking 20+ kicks now i still try and start as normal but you can tell if it is having a funny 5 mins lift the hot start open the throttle a little and one kick to clear next kick starts i have even turned it upside down when really hot let the motor stall and it still starts if you have not done it do it NOW

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

Go here http://www.popularmechanics.com/automotive...rs/4347056.html ....to watch an amazing video of the new BMW 1000r sport bike engine reving and watch the valves open and close. It just becomes a blurr! Wow. Ralphy

Yes I have ridden all so far, good and bad within the lot, but one thing is for sure, a carburator has its limitations, specially on a four stroke, it is simple physics, and has all been done before. You will not be able to ride it like a 2T, end of story! It will spit at you, and at the worst moment! 250 cc will work for the average rider, which may just be the 200cc = of the 2T which most need anyway, but Sherco and Honda both figured out early on that it would not work in WTC competition. Scorpa has already proven that it takes 150cc in a 4T to really make the bike move! Roumours have it that the Gasser 4T will have a flat head motor, not sure the displacement, I wo…

Noises off…… The precision click of a Parker 25 ballpoint pen. The sound of a Snap-On ratchet tightening a bolt. The rope winder on an ocean going yacht. The burble of a V8 engine. The sharp crack of a Montesa 4RT engine. The irritating high pitch whine of a lone mosquito in your hotel room in the dead of night. Emotive sounds each and every one. Think back, if you will, to bikes and cars you have owned or aspired to own. Then identify which of them you were most attached to and hold the fondest memories. Then ask yourself why. I remember vividly my first push-bike with proper tyres. Passed down from a cousin who had outgrown it and still a little too big for me …

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

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

These are some pictures of my Moto Guzzi Special. Based on a Stornello 1969 engine placed in a SWM 1980/81 frame. It's now 244 cc. (original 160 cc). I use it in Classic trials. Kind regards, Arie from Holland

What do you think about riding gear, I must admit now i am a bit older and rounder,lycra skin suits arnt quite so smart looking. But i think i have found the perfect solution, the big supermarkets do brand new jeans for

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

im new to trials and i want to get a 4t bike, but not sure which trials bikes are 4t? will be happy with any replies. thanks bleddyn

Has any body with a monty 4rt had it totally deristricted and if so did it make a big difference

As they say apicture is worth a thousand words.

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.