bigben3576

my lst2 will only drive if the throttle is on full but it goes real slow. i check the clutch,tuned the motor, and i checked the gear. i dont see anything wrong :,(

HerrSavage

Hi-lo?..

Linkage?

If not the engine, or a binding drivetrain, it's got to be one of those..

HerrSavage

Aha!! Check your grub screws in the middle driveshafts.. They are a usual suspect. They need to be threadlocked. This minor issue has caused lots of panic over the years, but can be solved very easily with a little drop of blue threadlock.. Check all four.. (one in front of rear diff, one on each side of the transmission, one in front of front diff...)

steed2-inactive

what about a backed off slipper clutch nut?

bigben3576

they all seemed to be tight...the slipper clutch wont tighten anymore. the rear wont tighten either. it turns but it wont tighten

HerrSavage

Slipper nut was a good call.. Should normally be all the way in, then for me anyway 3/4 of a turn out..

Check the grub screws? Also, turn on the radio and receiver, but not the engine, and push the truck back and forth on the ground.. - including holding the rear wheels up off the ground, then the front, apply gas, break, let it roll in neutral, etc.. Everything free?

bigben3576

everything is free it just does it under pressure or something

bigben3576

okay. i just tried to run it again and when i lift it off the ground the wheels turn a little but when i let off they stop dead...brakes?

esavagenoobie

Check your brake linkages? I have mine so that under full throttle, there is no brakes applied, but as the throttle linkages return to neutral some brake is applied, A drag brake of the sorts. Does your engine get up to full revvs?

bigben3576

it gets to full revs but the truck barley moves

bigben3576

i think i know the problem. i think its the clutch. im going to the hobby shop in the next few days to get it changed. i have more clutches but i need that tool to get it :/ oh well...at least it will get fixed. hopefully some bashing vids coming soon

ImpalaPolicePack

the tool you need to change clutch shoes is a small screwdriver.

bigben3576

well i have 3 more clutches i could put on it. i just dont have that tool to take the bell offf is all

ImpalaPolicePack

the tool you need to take the bell off is a pair of pliers to hold the flywheel.

bigben3576

no because the pistin still moves. i have a mach 427 motor. i need the plug thing

1QwkSport2.5r

What you need as already stated is a pair of channel lock pliers, and a (I believe) 10mm wrench. Hold the flywheel with a pliers and use the wrench to back the nut off the flywheel. Tap on the end of the crankshaft with a piece of soft wood (I use a pine 1x2) and the flywheel should right off. Though the stock clutch in the LST2 trucks is more than adequate for the average basher IMHO. I use the stock 3-shoe clutch with the long-life clutch shoes in both of my LST2's.

I use 1.1mm springs on the SH .28p6, and 1.0mm springs on the Mach 427.

The "plug thing" I think you're referring to is called a piston stop but I would never use one on a model engine. The risk of marring the glow plug threads and possibly punching a hole in the piston steers me away from using something like that.

Just my 2-cents.

bigben3576

i found the problem. it was the locking nut for the flywheel. the threads were gone. got it orderd and should be running by next week

newguy3

I am having the same problem!!  Should I just take it apart and do what you did.. Investigate?

newguy3

I'm having the same problem.  Should I just do what you did and investigate?   Thanks

Muskokarc

The clutch shoe tool is only around $9 on amain.com  worth the small investment.

1QwkSport2.5r

bah.. $9 for the tool, plus shipping for a tool you dont need. I install my clutch shoes with the same screwdriver I use for adjusting the needles. Works perfect, and I've never broke a clutch spring yet.

Muskokarc

I got mine when I got a bunch of parts so shipping was not a issue that and looking back it was less than $9.    Now I just need to get new shoes and bell for my rebuild to get it moving.

1QwkSport2.5r

I use Dynamite long-life aluminum shoes. I've got 2-3 gallons on the newer set and probably 4-5 gallons on the older set which is pretty close to the clutch spring wires. I'll be hitting the LHS this weekend for a few parts, so I too am going to get some new clutch shoes and springs.