Official HPI MT2 Thread
#9802
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From: London, UNITED KINGDOM
hi people Ive got a slight problem...i don't know if it is wheel spinning or if the nut on the slipper clutch is loose, when i put the car on the floor and drive off its fine and when i hit the high revs it just goes crazy lol. I'm not sure if its the slipper clutch? when i put it on a block all wheels off the ground and rev it up it seems fine?...when I'm on the floor and i go to tear away its like all four wheels are wheel spinning. its also hard to turn so it could be wheel spinning but I'm really not sure...any ideas? how will i go about tightening the clutch to stop it slipping to much and how do i go about testing it to Evan see if its loose
#9803
Take the top of the housing off over top of the spur gear. set the truck on the ground and try to spin the spur gear. It should be fairly hard to spin. If it spins easily then the slipper needs tightened.
#9804
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From: N/A, UNITED KINGDOM
Help! I've very recently attached a pull-start to my MT2 RTR, instead of the roto-start (which I really disliked). I tried to start the car for the first time today since I installed the pull-start, but it keeps locking up.
With the glow plug off, the pull start works as it should, but when I attach the glow plug it just locks up. Now I checked whether the engine was flooded, by pulling off the glow plug and giving the engine a few kicks with the pull-start, but when I replace the glow plug, it still locks. It's frustrating me a bit now as I don't know what the problem is. Any help would be much appreciated.
With the glow plug off, the pull start works as it should, but when I attach the glow plug it just locks up. Now I checked whether the engine was flooded, by pulling off the glow plug and giving the engine a few kicks with the pull-start, but when I replace the glow plug, it still locks. It's frustrating me a bit now as I don't know what the problem is. Any help would be much appreciated.
#9806
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From: London, UNITED KINGDOM
Ive set the slipper clutch. i tightened it (clockwise) until it couldn't be tightened anymore and then loosened it (anti-clockwise) by half a turn. i put all four wheels on the floor and put my foot in-front of the car. i spun the spur gear and its slipping and then a little click. i took it out for a spin today and its reving really high at only half throttle. Ive lost about 70% power. i noticed that the front of the wheel hex nut is blunt on the front right hand side but the rim still sits on it fine without spinning. Help will be much appreciated
#9807
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From: Macon,
GA
Hold 3 wheels where they will not turn and try turning the 4th wheel. If you can turn the 4th wheel more then tacking the slack out look to see what is the last part turning. Do you have the RTR or the SS?
#9808
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From: London, UNITED KINGDOM
i have the rtr. I dont understand when you say "more then tacking the slack out"
ORIGINAL: 46u
Hold 3 wheels where they will not turn and try turning the 4th wheel. If you can turn the 4th wheel more then tacking the slack out look to see what is the last part turning. Do you have the RTR or the SS?
Hold 3 wheels where they will not turn and try turning the 4th wheel. If you can turn the 4th wheel more then tacking the slack out look to see what is the last part turning. Do you have the RTR or the SS?
#9809
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From: Macon,
GA
If you hold 3 wheels from turning and try to turn the 4th wheel you should not be able to turn it more the about 15 degrees or so. If you can turn it much more or hear a crunching sound more then more then likely you have a bad differential or drive train problem.
#9810
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From: Macon,
GA
All so check the setscrews in the drive cups in the slipper clutch shaft. All so make sure your will hex are not stripped, or the pins that drive the hex broke.
#9811
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From: London, UNITED KINGDOM
i have checked the hex nuts and pins, they are all fine. must be something to do with my slipper clutch *sigh*
ORIGINAL: 46u
All so check the setscrews in the drive cups in the slipper clutch shaft. All so make sure your will hex are not stripped, or the pins that drive the hex broke.
All so check the setscrews in the drive cups in the slipper clutch shaft. All so make sure your will hex are not stripped, or the pins that drive the hex broke.
#9812
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From: Macon,
GA
If you check it the way I mentioned this will tell a lot. You said it was making a clicking noise and still have to wonder about the differentials and checking it like I said will either tell they are good or if they are bad.
#9813
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From: London, UNITED KINGDOM
ok thanks for the help. it clicks when i apply firm pressure to the spur gear to make it slip. it slips and then a quiet click and then it like resets itself from where it was before slipping if you know what i mean. maybe i need to get the slipper clutch maintanance kit. i really dont know. when i spin both back wheels the front ones spin. so that is showing the diffs are fine right?
#9814
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From: N/A, UNITED KINGDOM
ORIGINAL: nickrummy
Turn the truck upside down when you have the glow plug out and give it a few pulls, you should get the fuel out of the motor that way.
Turn the truck upside down when you have the glow plug out and give it a few pulls, you should get the fuel out of the motor that way.
Should there be any resistance when pulling on the pull-starter?
#9815
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From: London, UNITED KINGDOM
the engine will always be tight/lock up when new it says this in the dvd. if its locking up thats telling you its flooded take the glow plug off put a cloth over the heatsink and give it a few pulls. put the glow plug back in and try from there. if its still locking up try warming the engine up before use ie a hairdryer. good luck bud
ORIGINAL: arapoda
What if the pull-start still locks up after trying this? Any other things that might be causing the locking up?
Should there be any resistance when pulling on the pull-starter?
ORIGINAL: nickrummy
Turn the truck upside down when you have the glow plug out and give it a few pulls, you should get the fuel out of the motor that way.
Turn the truck upside down when you have the glow plug out and give it a few pulls, you should get the fuel out of the motor that way.
Should there be any resistance when pulling on the pull-starter?
#9816
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From: Macon,
GA
If I where you I would check things out before getting the slipper service kit as I still think it might be something else. Did you even try what I said about holding 3 wheels from turning and try to turn the 4th wheel? All so when unflooding and engine it is a good idea with the plug out to turn the truck up side down.
Good Luck
Good Luck
#9817
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From: London, UNITED KINGDOM
i cant at the moment as i have no wheels
shall i take the diff appart and have a look. what should i look for?
shall i take the diff appart and have a look. what should i look for?
ORIGINAL: 46u
If I where you I would check things out before getting the slipper service kit as I still think it might be something else. Did you even try what I said about holding 3 wheels from turning and try to turn the 4th wheel?
Good Luck
If I where you I would check things out before getting the slipper service kit as I still think it might be something else. Did you even try what I said about holding 3 wheels from turning and try to turn the 4th wheel?
Good Luck
#9818
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From: Macon,
GA
If you take the diffs apart and there is a problem you will see metal and stripped gears. In a diff you have 6 gears on the MT a ring and pinion, which will be the first ones you see when you take it apart. Then once you take the ring gear off the cup you have 4 spider gears in the cup. You need to make sure you check all of them. Since you have the RTR and has the poor pot metal ring and pinion if they are bad make sure you up grade to the heavy duty like comes on the SS.
#9820
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From: London, UNITED KINGDOM
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
#9821
That won't be the problem. Something has to be slipping somewhere. Might want to check the clutch bell and clutch shoes? They could be glazed over or worn?
Also, more teeth on the spur gives you more acceleration, less teeth on the spur give you more top end.
Also, more teeth on the spur gives you more acceleration, less teeth on the spur give you more top end.
ORIGINAL: djheptic
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
#9822
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From: London, UNITED KINGDOM
how would i know if my clutch shoes are worn. i wouldnt be able to accelerate if they where warn down though right? i can accelerate slow to fast and when i get to a certain speed i just loose all power and it wont go any faster, i have lost about 70%power. im sure when i changed my clutch bell ages ago my clutch shoes where purple, now they are black lol
ORIGINAL: nickrummy
That won't be the problem. Something has to be slipping somewhere. Might want to check the clutch bell and clutch shoes? They could be glazed over or worn?
Also, more teeth on the spur gives you more acceleration, less teeth on the spur give you more top end.
That won't be the problem. Something has to be slipping somewhere. Might want to check the clutch bell and clutch shoes? They could be glazed over or worn?
Also, more teeth on the spur gives you more acceleration, less teeth on the spur give you more top end.
ORIGINAL: djheptic
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
#9823
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From: Mississauga ,
ON, CANADA
the only purple clutch shoes i,ve seen were on the savage and that wasnt stock shoes,the mt2 shoes are black stock
ORIGINAL: djheptic
how would i know if my clutch shoes are worn. i wouldnt be able to accelerate if they where warn down though right? i can accelerate slow to fast and when i get to a certain speed i just loose all power and it wont go any faster, i have lost about 70%power. im sure when i changed my clutch bell ages ago my clutch shoes where purple, now they are black lol
how would i know if my clutch shoes are worn. i wouldnt be able to accelerate if they where warn down though right? i can accelerate slow to fast and when i get to a certain speed i just loose all power and it wont go any faster, i have lost about 70%power. im sure when i changed my clutch bell ages ago my clutch shoes where purple, now they are black lol
ORIGINAL: nickrummy
That won't be the problem. Something has to be slipping somewhere. Might want to check the clutch bell and clutch shoes? They could be glazed over or worn?
Also, more teeth on the spur gives you more acceleration, less teeth on the spur give you more top end.
That won't be the problem. Something has to be slipping somewhere. Might want to check the clutch bell and clutch shoes? They could be glazed over or worn?
Also, more teeth on the spur gives you more acceleration, less teeth on the spur give you more top end.
ORIGINAL: djheptic
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
ive done everything you said 46u and all seems to be fine. could it be because ive added the tsais nitro devil pipe so its giving me more perfromance so i need more teeth on my spur gear?
#9824
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From: Macon,
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If I am not mistaken the RTR comes with the largest spur HPI makes 52 teeth. The thing I keep going back to is he says it makes a clicking sound! Check the clutch, pull the slipper all the way apart and check it out. Then if you do not find anything go to the differentials. When you did like I said hold 3 wheels and turn the 4th did you use a little pressure on the 4th wheel when it go to point the wheel felt like it would not turn any more. Being I do not have the truck in front of me I am still guessing the diffs as he said about the clicking noise but I could be wrong. If I had in front of me I could tell really quick.
Good Luck
Good Luck
#9825
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From: Mississauga ,
ON, CANADA
i had that clicking sound once too but all it was was the stock dogbones sliding a bit because i was missing the rubber washers that goes in the cups well hope everyone figures out those problems and 46u my dogbone doesnt slip out anymore and i havent change over too my new cups yet my shocks i had installed were not on the end mount hole where they should have bin i had put it on the hole just before the end but since i installed them on the end mount no more problems slipping out
ORIGINAL: 46u
If I am not mistaken the RTR comes with the largest spur HPI makes 52 teeth. The thing I keep going back to is he says it makes a clicking sound! Check the clutch, pull the slipper all the way apart and check it out. Then if you do not find anything go to the differentials. When you did like I said hold 3 wheels and turn the 4th did you use a little pressure on the 4th wheel when it go to point the wheel felt like it would not turn any more. Being I do not have the truck in front of me I am still guessing the diffs as he said about the clicking noise but I could be wrong. If I had in front of me I could tell really quick.
Good Luck
If I am not mistaken the RTR comes with the largest spur HPI makes 52 teeth. The thing I keep going back to is he says it makes a clicking sound! Check the clutch, pull the slipper all the way apart and check it out. Then if you do not find anything go to the differentials. When you did like I said hold 3 wheels and turn the 4th did you use a little pressure on the 4th wheel when it go to point the wheel felt like it would not turn any more. Being I do not have the truck in front of me I am still guessing the diffs as he said about the clicking noise but I could be wrong. If I had in front of me I could tell really quick.
Good Luck


