lemur

What kid size electric bike has a clutch and gears? And what electric bike that runs full size trials tires complete with a clutch etc. does not cost more than a regular modern trials bike 😂

From observation; the biggest problem with small frame trials bikes is the limitation to not run full size radial trials tires and rider size is a better gauge then age. Some young people get real big faster than others. Lots of engine power or lack of horses is less of an issue for most if it has a clutch and some gears, small frame bikes with minimal suspension and small wheels, electric bikes and automatic transmissions all limit the young riders ability to fully experience or navigate trials terrain.

Almost guarantee the fluid leaked down through the O-ring, only way it could evaporate to that extent is if you left the reservoir cap and rubber diaphragm off. The purpose of the rubber diaphragm is to reduce water from contacting the hygroscopic DOT fluid. Moisture on top of the diaphragm is water that has entered through the tiny vent hole and condensed. Vent hole needs to be clear or lower fluid level will create a vacuum in the reservoir.

Dry clutch master means the DOT fluid or mineral oil has leaked past the piston O-ring and into the transmission, its an easy fix but you need to use the right size and material type replacements.

Those are almost exactly what grip studz look like. Auger thread vs screw is what makes them stay in good. With grip studz the carbide tip is more apparent. Those would work great and if they are less expensive I would give them a go 👍

Close to that yes, once you add the tax, shipping and the special tool. Up side is they will last for many years. We ride the same terrain as in summer, the studs are wicked fun and great practice for riding over logs on any angle and really steep hill climbs ⛄️ I find most of the screws in spring and reuse them, the rest disappear into the ground because they are only about 3/8” long once you cut them to length.

Does anybody know the normal operating temperature of a 2-stroke engines transmission oil?

…. Your alternator outputs AC power and this is the device that converts AC power to DC so that DC devices can use it.

4 wires and connected to the DC fan motor would make it a rectifier. Overheating of that component would indicate too much current input, too much current draw, or a short circuit somewhere. You need to test everything from the alternator to the fan and thermostat and lights.

A friend bought a beta recently and took possession before noticing the kick start is on the left side, great bike if that works for you.

Rule of thumb is vent pipes go up, drain pipes go down. Add that trials bike transmissions should not have a source of positive pressure, even a Montesa 4RT has a transmission that is separate from the crankcase oil. If air is being pumped into your 2 stroke transmission it must be leaking past a crankcase seal, which is not intended by design.

Remember that any fuel you run in your internal combustion engine is a very strong solvent. Race fuel is very close to being paint thinner.

Fill all of the middle 3 rows of knobs with carbide grip studz, for the 2 outside rows of knobs you can use sheet metal screws with crazy glue to hold them in better, the front tire works good with carbide grip studz on every knob in the middle row and for the rest of the knobs run sheet metal screws. Don’t leave any knobs as plain rubber or you will crash. Goal when riding on ice is to stay on the pegs 100 % of the time and spin the tires as little as possible, avoid bare rock surfaces and aim for the ice, logs and frozen ground for the best traction. Don’t ride in double digit minus freezing weather or the tires will crack and the knobs will fall off. 😎 it’s a blast and great practice, you won’t regret it. You won’t lose any grip studz but some of the metal screws will fall out and need replacement or reinstallation. Needs something like 300 studs for the rear and another 100 for the front, buy the sheet metal screws in bulk packs of 1000 so your investment will be somewhere around 800$ canadian I use worn out trials tires from the previous summer season and those last one winter.

Lawn mowers and chainsaws have carburetors with a diaphragm fuel pump instead of a float bowl, needle and float. In the case of a chainsaw that is so it can operate on its side or upside down. The carburetor on a lawn mower might have a float but holds less fuel in the float bowl where it can evaporate and distill into solids. If your carb float bowl is full of green stuff, that is the copper parts in your carburetor oxidizing, if it is full of white powder that is the aluminum parts oxidizing and if it is full of black stuff that is what is left of the rubber o- rings.

This site is as good as any for a start 👍 start a thread dedicated to your location to seek out riding partners.

If the problem is affecting all of your small engines? The typical solution to deal with water in fuel is gas line antifreeze which consists largely of isopropyl alcohol. You can’t really ‘stop’ the nature of ethanol once it is added to the gasoline all you can do is add more alcohol of a different nature, petroleum distillates or lubricants having a different chemical composition in the hope to address a specific problem. If all else fails try race fuel instead of pump fuel, bearing in mind that all ICE fuels are solvents of some kind.

If you ever want to know what is in a fuel additive the best place to look is the MSDS data sheet for that product.

LCD operate off a backlight ( white light source behind the display screen ) if the display flickers that is the backlight flickering. Check all your electrical connections are solid, if the backlight can be removed replace it, if the backlight can not be removed for replacement you are likely needing to replace the whole thing. Hope that helps some.

Ethanol being basically corn alcohol is more likely to be prevalent in fuel produced in North America. The problem with ethanol fuel is its ability to contain up to an equal volume of water and still be considered ethanol. Oil and water as we all know does not mix and many of us premix oil in our fuel to operate in a 2-stroke motor. Here in Canada we obtain much of our fuel from the USA but unlike most of the USA we live in a moist climate that experience huge temperature changes that cause condensation. Several things become a problem as a result of all this, for one we are potentially paying outrageous money for buying watered down fuel, two we can experience water separation in the fuel which can cause problems in the engines and three is freezing temps that can cause ice. Literally ymmv.

The link you provided answers your own question, pump gas is ‘government mandated’ to contain ethanol, your only options are race fuel or fuel intended for aircraft because you can’t use ethanol in an airplane.

Plus one on using a higher gear if you have been using first gear, first gear is way harder to control 👍 sorry to hear of your crash injury, I know how bad ribs hurt.

Omg that’s 3 grand Canadian plus shipping lol that won’t be happening, doubt I’ll ever get to see one in the wild.

Cool! Looks expensive, let us know if it works any better then the factory competition modification

Google says 46 and 55 mm by rights the wrenches should have been included with the original motorcycle purchase, so you might want to ask the person you bought the bike from or another rider who has extras in their tool box.

Things about old twin shock trials bikes I don’t miss; brakes like leather, cable operated clutch and bruises on the inside of both legs from smashing on the top shock mounts.