Trial Magazine Forum

Judd, can I have an EVO carb??

Has the hot starting improved?

Latest report on running. Fitted 110 main jet and lowered float ever-so-slightly. Hot starting is now better though not perfect, I have noticed now that the red hot-start knob appears to get 'sucked-in' when Im kicking it so I have to bend down and pull red knob out before every kick. When it does fire, it sucks the hot-start in on its own and so goes off. Its annoying but needs a dose of looking at now. Did the Weatherby Wainwright Shield last Sunday and found the bike was basically much improved with these changes but not perfect. The plug is spotlessly clean and running just a bit weak but the ambient was some 25-27 degC so I figure the topend running mixture is fine. It did stop in mid section a few times and refuse to fire up for 90-120 seconds but I know thats a trick it usually does do when stalled. Manually open fuel tap usually helps. I need to cure it on the pilot jet now and so will swap the 27.5 pilot for a 25 pilot and report mi finds later.
Hugely enjoyable trial on Wainwright with a good blast over the moors, section 8 was a killer though with only 3 cleans all day. Beta is a super bike for punching over wet boggy moors in 4th, just lean back and wind it on, loads of engine braking going down steep fell sides and generally floating it over wet boggy bits. Will see if things improve more for the AJ trial next month.
See Ya
FF

No not yet!
I would take a massive hit on the resale value so I'm keeping it for a few years yet. Once I get it sorted it should be a gud 'un. The basic problem is that they come out of the factory with the carb jetted to be rich and in an extreme case (like mine) it will bog-down all the time. Its the same with 2T these are always rich to be safe from nipping up I suppose if an owner screams it. I suspect that for a TMX test session, Lampkins sorted out the carb for the EVO to make sure it worked as it should.
Ive but some Future carbon hoses on it and a Sherco wavy front disc to give it some power to the brakes and a smoother less cluttered look to the cable run down the tank. Just generally tidy things up.
Performance wise its ample, the torque is always there and it  can float the front end with no effort.
My take on the BETA models is that its always better to wait 1 year before buying the newest model. I bought the last 98/99 Techno model when the released the Rev3, it was fully sorted and bomb-proof while the Rev3 was still a bit of a undeveloped trial. waited till 2001 for a Rev3 and then it too was sorted.
The EVO still has frame problems with cracked bits around the rear shocker and leaking tanks. Give the factory another year before you order one!

New models having problems is to be expected but these are major problems in my opinion. When you get chance, have a look at the underside of an EVO frame, the back end especially. The bit where the 'tank' joins the rear shock mounting, now that is a complex bit, the frame changes from square box to round, there's a fuel tap stub in there and lots of structural bracing, cast alloy is welded to extruded alloy section, production engineering wise its a lot to have to get right, its where all the stresses are focused.....and it does not look pretty.  Sure the dealer warranty covers a new bike but Im worried about the owners down the line are going to experience some disappointment when the tank starts to leak and sooner or later one will go up in flames.
Wait until Feb 2010 before you order a new one!!

Montesa....?

... and the 4rt is huge and showing it's age now. Plus it looks like a camel without a flat tank conversion

No I did not.
And here's the latest on the Rev4;

110 main jet
2nd clip on needle (from top)
CRP6EA plug (NGK)
27.5 pilot (waiting for 25)
float = close at 27mm
start jet = 60
pilot screw = 2 1/2 out

result is that it starts 90% of the time now with use of hot-start. Its still a sod if you drop it or stall it but its much better than new.
Rode (well staggered and stumbled alot) on Allen Jefferies and it went well. Uses more fuel than mi Mont and coasted down the hill into Wilkses garage after first leg. Found with some aggression I actually made it up Ma Ludgates section (is it Penny ??) which pleased me no end!! Mainly 5's though cos I could hardly walk the sections let alone ride 'em!! 

Anyway enjoyable day out. Nice cup o tea and a bacon butty at the reading room in Halton to start me off and then a big old slice of lemon sponge cake at the end. Good atmosphere when its home baking and fresh mug of tea, all in a worthy cause. Thanks ladies for the spread...'an all scenery you could ever want for free!

Last edited by Ferretflasher (2009-07-13 18:06:26)

We have 14 new 09 Evos out of our shop in BC Canada and no problems at all - Nothing.

Outlaw Dave wrote:

We have 14 new 09 Evos out of our shop in BC Canada and no problems at all - Nothing.

Blimey... hiya Dave. We do know each other, will reveal myself to you in due course... so to speak

Should be about time for the 2010 Evo's to hit the shores... a few mods on the frame, swinging arm and radiator and i think new mapping for the ignition.
Wonder how long this model will go for... will there be any need for changes if no-stop comes in across the board. It has the tightest turning circle of any bike out there so a head start for the no tricks sections

Got my 290 2010 Evo yesterday... it's my birthday next week just before christmas so i have had my present!!
Many people drill a hole in the bottom of the airbox and put a tubeless tyre valve in there with the valve centre  removed.. if you do get water in there you can unscrew the valve cover and let it drain out. Also tape over the grill in the winter.... it should be able to get enough air in via the gap under the seat/rear fender.

Hey Guys - Since my original post on the Evo's We have had one customer drop his 290 & seized it when the throttle  stuck wide open - just thought I would mention that this new bike (2T) has a flat topped piston and very narrow rings plus a separate head dome that can be changed to vary the compression. All this new tech stuff means that it is super important to run good quality gas (Petrol) - The latest snowmobiles we have over here in Canada have similar engines plus fuel injection, and they need the best fuel available.