Help me fix my trials bike!

You guys are going to get a laugh out of this... I mixed up some gas last night, poured it in and kicked it a few times with nothing... then let it sit over night. The gas wasn't flowing into the carb, it has a clear filter between the tank and carb and I could see there was nothing in the filter. Fast forward to now... I sprayed a shot of starting fluid in the air box, gave it a kick and it fired right up! :freak: :wtf:

I rode it around, the idle hangs up pretty bad, it's leaking coolant somewhere and the muffler tip is totally missing so it's louder than hell. I aired up the crusty front tire and took it for a spin up and down the street! The engine does have a LOT of torque, the gearing is insane! The shifter is about 12" in front of the peg and not easy to shift. I realize it's a trials bike, but it's very different.

The previous owner was an idiot, apparently... he told me how he and his buddy kicked it for 4 hours once. Wonder if he had any gas in the tank!

I've got a lot of work to do, but at least it's rideable! I'll pull the carb off and clean it out real good, find & fix the coolant leaks and possibly adjust/play with the clutch. I need to check the motor oil too... hahaa! :D

AWESOME! For trials, you actually lift your foot off the footpeg to shift.

Also, most trials bikes run really lean premix, like 80:1,

You usually start from a stop in 1-3rd gear, depending on the obstacle. There's usually a big gap between 3rd and 4th. 4th and 5th will get scooting down the trail. i was in 4th and 5th most of the time I was on the trail. I rode in 2nd for almost every obstacle.

How does that super heavy flywheel feel? It's weird taking 3-5 seconds to fully rev up. Watch the trials guys, they sit in place and rev it for 3-5 seconds to get the flywheel spinning, then they dump the clutch at full throttle and launch up a 6' wall.

[video=youtube;nopt7J49_bA]http://www.youtube.com/watch?v=nopt7J49_bA[/video]

I'll bet that motor is in fantastic shape. I'm more than a little jealous. Let me know if anyone else sees a cheap broken (or working) trials bike.

Two more trials tips:

1) learn to 1-finger clutch, and clutch often. Most trials guys don't ever leave the clutch out for more than 5 seconds. They're always pulling it in and feathering it. Don't use the throttle to control your speed, use your clutch. Also, trials riders never shift gears while moving (even though it doesn't hurt anything to do so). They pick a gear 1-3 for their obstacle, give it gas, then modulate the throttle to get up it. Once they're up, they pull in the clutch immediately.

2) Use your suspension and weighting/de-weighting to get up stuff. The whole secret to trials is weight transfer.

Ryan Young has some great trials training DVDs.
 
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You don't want my tire. In my opinion, the best tire is a Michelin X-11 tubless rear tires. My X-11 is not tubless, it's meant for a tube. They don't squish as much when they have a tube in them.

Optimum tire pressure is about 8-10 up front, and 6-8 in the rear.
 
I don't want the best for this bike, I want cheap! Honestly this bike is pretty rough, I'm not sure how well it will ride... I'm considering selling it for profit and buying a newer, better bike.
 
I don't know that I'd sell it to a friend... I'd try to make as much money as possible, say $800 after I put on a new front tire, fix a few things and get it running properly.
 
This bike already kicked my ass... the left-hand kick start is KILLING ME! I've been kicking it with my right leg and it kicked back the day before yesterday and got me in calf. I have a huge bruise and a bit of blood was drawn from that, it's been pretty tender.

After cleaning out the carb, I put the bike back together and went to re-start it. The bike won't fire! It caught a spark and sputtered, but that was it. I kept kicking it and AGAIN, the kick lever got me in the calf! Now I have a huge bruise from the first time and a massive goose egg from the 2nd kick!

I think the problem has to do with the wiring for the kill switch... I had it apart when the kick start got me the 2nd time and got frustrated... my right leg is killing me! Friggin' Scorpa, whoever thought a left-side kick was a good ought to be shot!!
 
on the trials bikes, you can keep the kick start down even after it starts. So you push down and leave it down for a few seconds. That sucks though. Beta uses left-side kicks too.
 
My leg, after the kick starter kicked me... twice! Needless to say, the bike has great compression. :squint:

Bruises.jpg
 
Ooh looks nasty dude! Brings back memories of my old Husky 510

Dang! pain!

Lots of pain! Over a week and a half ago now and it still hurts... bad!


This is up for sale.. Yeah?

Correct, it's on KSL and is priced high. If a friend wanted it, I sell it for much less. I want to play around with it, but I'm not sure when I'll have the time. May be best to let someone else have at it... and gain their own bruises! :D
 
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