Making an EC300 into a trials bike?

[Keg]

I have an 03 EC300 that I have put in a lot of time and money into to fix it up.

I want to run it in an extreme event later this year, but would love to make it more 'trials like'. What should I do and how can I lighten it up??

- 13/52 gearing
- trials tyre on the rear and maybe the front.
- tugger straps
- hyde bash plate
- force radiator guards

I tried throwing an old mousse in the trials tyre, but it wouldn't throw out on the bead. Maybe a new 140/80-18 might work. Anyone have experience with trying this? I heard Chris Birch slits his mousse running an FIM tyre, but not sure how he slits it.

I had to run a steel KX subframe coz the alloy one was knackered. It is heavier and the 03 feels alot heavier than my 2011. Should I try and take it off and maybe even change the seat and rear guard more like a trials bike to lighten it off.

I could make a smaller fuel tank, I don't need a lot of range, but there is not point if it is a heavier aluminium one to replace the plastic.

What else can I do???

 

[wence]

pray....and start that salad and no beer diet you are always talking about???

 

[tm_enduro]

I tried throwing an old mousse in the trials tyre, but it wouldn't throw out on the bead. Maybe a new 140/80-18 might work. Anyone have experience with trying this? I heard Chris Birch slits his mousse running an FIM tyre, but not sure how he slits it.

Put on a tubeless tire valve stem to help seat the tire. Slitting a mousse would likely give more traction, but would make the alread delicate mousse more fragile and likely to bunch up in one part of the tire. If you don't use a trials tire, you can place extra grooves in your knobby of sipe the knobs. I have seen guys removing rubber on the inside carcus of the tire to make it more flexible.

 

[GMP]

Funny, that's how my 250 is set up now for all the nasty stuff here. Tubliss system with the rear trials tire, forget the front and run a good knobby with Tubliss as well and a G2 throttle which you will want with 13/52 gearing on a 300.

 

[Neil E.]

What else can I do???

A flywheel weight should help.

 

[HuskyDude]

That's how I have my 300 set up. 13/52. Makes 1st gear sweet. I also have a Mitas ET-01 TL Trials waiting for the back. Just trying to get a couple more ride on my old tire.
I fastened a tugger strap to the back sub frame and it does come in handy at times. No pun intended.
For the weight you are saving I would just leave your fuel tank the same. For that matter at my age having a seat on a Trials bike ...is just fine by me.

 

[stainlesscycle]

I tried throwing an old mousse in the trials tyre, but it wouldn't throw out on the bead. Maybe a new 140/80-18 might work. Anyone have experience with trying this? I heard Chris Birch slits his mousse running an FIM tyre, but not sure how he slits it.

running a tubliss system in the rear would work - definitely slime it though - i've found the only draw back with tubliss is if you rip knobs off, it can leak - slime stopped that problem..

I could make a smaller fuel tank, I don't need a lot of range, but there is not point if it is a heavier aluminium one to replace the plastic.

90% of the weight of the tank is the fuel.. just run .75 gallons or whatever you think you will need...


personally i would also cut the seat down so it's easier to move around on the bike...that will give you more of a trials like feel maybe... also trials bars and pointing your levers way down will force you more into a trails like position.....

 

[Keg]

Is the G2 throttle to make it slower revving off the bottom? Could be interesting.

I am not real keen on the Tubliss considering the extreme location looks like it has alot of stuff that might tear a carcuss. Also a few guys I know stopped running them after slow leaking issues.

The seat is pretty low with not a huge amount of foam in it after 8 years. I am 6 foot 3. Plus I don't want to look like a free style wanker by cutting the seat down.

It is running stock springs which are too light for me, but good to bounce around on, should I leave them or put firmer rates in?

 

[HuskyDude]

Is the G2 throttle to make it slower revving off the bottom? Could be interesting.

The beauty of the G2 is you get to go either way...
Slow opening at the beginning or Fast open. I believe it comes with 3 different cams to suit what you want.

GT throttle

 

[Biff]

Trusty PV cover for more low end


Biff

 

[dank]

The beauty of the G2 is you get to go either way...
Slow opening at the beginning or Fast open. I believe it comes with 3 different cams to suit what you want.

GT throttle

if the newer style is the same as the old ones were then it comes with three cams: the x100, x200, and x400. the x100 is the standard throttle cam, and is just like the original throttle, the 200 lets the first 1/3ish of the throttle turn is tapered down a little to make the throttle let on less intense, the x400 is about 2/3ish of the throttle turn. basically the g2 makes it so the throttle pulls the cable less than stock for part of the twist, then opens it fully at the end of the twist. i think g2 also makes a quick turn throttle that pulls the cable faster than stock.
@OP: you could also find a trials throttle tube, i think there are two of them, which will make the throttle similar to a trials throttle.

 

[2whlrcr]

Rotate the bars forward and raise them if needed.

 

[Keg]

Thanks, I had a domino trials throttle somewhere. Cant remember if it was a slow or fast action though. I might try a G2.

I should put a powervalve cover on it too as I do stock the non adj type.

In trials I was always told don't be tempted to raise the bars even if you think it is more comfortable. Is that wrong?

 

[HuskyDude]

I should put a powervalve cover on it too as I do stock the non adj type.

I have a "Trusty" on mine...love it.

In trials I was always told don't be tempted to raise the bars even if you think it is more comfortable. Is that wrong?

Never heard of that one before. I added over 2" to my TXT.

 

[bchatt]

In trials I was always told don't be tempted to raise the bars even if you think it is more comfortable. Is that wrong?

I have found this to be very true. Raising the bars allows you to stand up straighter, which feels better, but it takes weight off the front wheel. Trials bikes need weight on the front wheel to stop the front pushing on full lock or tight turns.

 

[Cruiser]

I have a BN trials throttle I bought years ago and never installed,, the G2 came out and I went with that.. If your looking for one let me know.. It is even more spread than the lightest g2 cam..

 

[2whlrcr]

In trials I was always told don't be tempted to raise the bars even if you think it is more comfortable. Is that wrong?

Well I guess that depends upon how tall you are. Every one I know much over 6' raises them a little or gets a taller bend. It's probably more important to rotate them forward, because that helps get the weight on the front too.

 

[Skidad]

G2 also has a 300 cam, a 500 and maybe even a 600. Call and talk to him or email. He's a super nice guy and excellent customer support

 

[dank]

G2 also has a 300 cam, a 500 and maybe even a 600. Call and talk to him or email. He's a super nice guy and excellent customer support

theyve come along way then, since the one on my bike was purchased anyhoo.

 

[Keg]

My 52 tooth sprocket came too late this week, but I still had a great time testing the new setup out a little forest near me with a lot of rocks and fallen trees.

I am looking at getting an Estart flywheel nut and making a flywheel weight to bolt on too.