jimmyl

Now that there are a few new 4rts about has anybody got a back to back comparison of an old 4rt compared to the new models. Are they better, same or just different. Anybody got any inside info on the engine braking reduction. I've heard this can be done to older models. Is this a software mod or hardware mod. Evidently nothing obviously mechanically different. Is engine braking a bad thing or has it been done to help people switch from 2t

I think it is effectively a double blip but rather than waiting for the front wheel to hit the obstacle the rider uses body weight/movement to instigate the suspension lift which is then supported by throttle and body extension. This combined with lots of bottle and skill especially indoors!!!

Probably call it a "Bou Bounce".

Unfortunately most riders below expert/intermediate would ride better on a lower powered bike. How many racing reps do you see with head gaskets, lower gearing, flywheel weights etc. The one beauty of a repsol is that it has no more power than a std Mont and with a PTB can be much softer. Trouble with lots of modern products including trials bikes is that people don't necessarily buy what makes them perform better but what they believe makes them look better. How many modern phones are actually rubbish at making calls and have minimal battery life?

Vale of Towy trial coming up if you are interested. Vale of Towy MCC. Easy Trial 26th January 2014 Glogue Quarry, Llanfyrnach, Crymych. Pembrokeshire. Sign posted off A478 Narberth to Cardigan road. 11am Start, Sign on by 10.30am Three Routes for Adult and Youth: Not so Easy, aimed at experienced riders on older bikes, Pre 2000, Twinshock, Air Cooled etc. Easy, aimed at Sportsman / Novices on any bike, Old or Modern. Dead Easy, aimed at beginners, Adult and Youth on Old or Modern bikes including small wheelers / Autos / Electric. Youth riders on all routes must be on bikes with a Capacity appropriate to their age / refer to ACU handbook page 202 for clarification. First time riders can fill in Club Membership forms and Licence application forms that provide relative insurances which will cover them for the whole of 2014. Enter on the day, sign on by 10.30 please. Further Information contact Glyn Jones 07800 559463.

Get used to using the kill button. Never stall the bike - always use stop button as this seems to stop bike in the correct sequence. Also when starting get used to the quick snap of the throttle then push kill button before kicking over with no throttle. If it doesn't start after a couple of slow progressive prods then slow kick, throttle wide open then a few presses on kill button and resume normal start procedure. Wheels look like a lazy option rather than being stripped right down!!!!

Just remembered a big must - case saver on sprocket side - may save you big money if not already fitted.

jj65 has it about covered. Brake parts are common with other trials bikes with the AJP calipers etc. Oil filter common with CRF 250. ATF can be used in gearbox with good results. Air filter cleaned every ride and don't try and start the bike with a freshly oiled air filter.Leave it on the bench for an hour before fitting it. Solvents seem to confuse the injection system. Munch at M Sport is a top contact if you have any issues or for parts etc

Look like 315R Mont ones from the 2001 models etc

This experiment raised several questions: * In a common-place environment, at an inappropriate hour, do we perceive beauty? * If so, do we stop to appreciate it? * Do we recognize talent in an unexpected context? One possible conclusion reached from this experiment could be this: "Even a really well played violin sounds like a strangled cat." Give me a 4rt on full chat any time!!

Did you weigh each assembly before and after. The quoted saving is quiet good for relatively reasonable money when last I looked. I did think about having 1 machined myself but was unsure of pump fitting, hose fitting and cable sealing etc. Was going to look at possibly increasing fuel capacity around the pump to make up for loss with flat tank.

This is a story about four 4 trials riders who are all members of the same club: Everybody rides a Beta Somebody rides a GasGas, Anybody rides a Sherco,... and Nobody rides a 4rt. It was suggested that the club should have some land to practice on and as this was an important job to sort out Everybody was asked to do it. Everybody was sure Somebody would do it. Anybody could have done it, but Nobody did it. Somebody got angry about that because it was Everybody's job. Everybody thought Anybody could do it, but Nobody realized that Everybody wouldn't do it. It ended up that Everybody blamed Somebody when actually Nobody asked Anybody

67.5 kg at the start of a trial- 65kg at the end after all the bits have broken and fallen offf

even easier - buy a 4 stroke

Was just suggesting ideas off the top of my head as to why extra weight may be beneficial. Anyway is that why the Americans also go to the expense of inventing straight roads rather than making cars with handling!!!!

Wouldn't be a Beta with the leaky carb then. Use the marginal increase in minimum weight to increase silencers and drop noise levels would be a move in the right direction. How about shaft drive - no chain lube to wash out. Fuel injection - no float bowl to leak or spills when tipped over. All above have weight penalties against doing them and unfortunately cost implications too but may be the burden of being allowed to play in the woods in the future

Start, end of every lap and at the finish. Takes 2 seconds. Supply jet wash to rinse of worst of the mud and then weigh. If a bike is ok when clean then they are going to be safe with dirt on. Really is so easy to enforce.

Before everybody starts burning witches at the stake what is the weight of a 2013 bike with oil in the engine and a full tank of fuel. Lets talk from a point of knowledge rather than promotional brochures. Also all those stories of bikes having broken swing arms, wheel bearing not lasting 5 mins, suspension bushes seizing, mudguards that shatter when you breath on then think what a couple of kg applied to properly engineering critical components would make to resale values, running cost etc. Every kart race I have been to had the karts weighed as they came in at the end of the race so dead easy to do - any yes you include fuel same as F1.

Funny mine did similar Sunday. I think I inadvertently stalled just as I kick started it or didn't start it properly. Fired once or twice then struggled with it as you described. I have winter plug in mine which seems to improve things. Also make sure in neutral and stopped on kill button. If you find anything else let me know!

This bike has been about for a few years - looks like its just had a mudguard upgrade. Why go against the good points of a 4rt ie reliability by adding a load of delicate parts in the search of lightness. Engineering wise its clever but don't think its ever going to cut it for the paying public.

I always fancy a turned X11 tyre (after one or 2 outings) gave more grip than a brand spanker. I convinced myself the side wall etc needed softening up. New X lights seem spot on as new.

I must be in winter mode then!!! Always tickles me when someone sits there spinning the rear wheel without applying weight to either a footrest or wedging your derrier onto the seat. As said above the rider is still the main source of weight.

I remember the Talons hubs which I think were pretty universal and reversible. However to be honest I could probably turn a tyre on the rim much faster than swapping sprocket and disc.

Looks like a bit filing and a bit of filling will have the job done no probs

If you can stick out for an 09 and on then changes are worth it. Don't think much changed from 09 on other than graphics. One with a PTB is a bonus well, worth sticking out for, the rest of the stuff can be bolted on so would not worry whether its a repsol or not. Not sure of current values but still seem to hold good money and are bullet proof.