ViperX

Hello

for those who are not aware of my situation can read my previous thread posted last weekend, "Savage X - Sudden Lack of Performance - Part I"
Link: http://www.rcuniverse.com/forum/m_4698505/tm.htm

Long story short:
Last week my savage x suddenly became sluggish while tuning. wheels off the ground move fast enough to make them go baloonish but when the truck is on the ground it would move very very slowly and at the same speed no matter how much throttle i giv it. you can hear the engine rev, but no diff in acceleration

I thought I would post some pictures and videos of my problem and hopefully someone here might be able to pinpoint whats causing it and relieve me from my misery. this truck is drivin me mad.

Video Link 1 - Wheel off the ground
http://www.youtube.com/watch?v=-c9NLM-UvPU

Video Link 2 - wheels on the ground
http://www.youtube.com/watch?v=Nc6hXpmyAyI

Request Video by Link - video is showing the spur as the truck is held at one place on the ground while giving it throttle. shows the spur gear and other parts spin.
http://youtube.com/watch?v=uSihEXZYNpo

my apologies for the videos. It has been pouring rain for the past couple of days so a mate of mine kindly cleared his shed and let me use it for this video, and is the reason why i had to do this indoors. hopefully by 2moro i will update the video with an outdoor version with more light.


+++++SO FAR I VE CHECKED+++++++++
**spur gear - for any damage - none found
**spur gear - slipper clutch pads - all good
**2 speed adjustment set screws - intact
**Transmision casing for any damage - none found
**All other internal transmission gears - they look mint

**All dogbones - intact with set screws
**Wheel Nuts, Hexes/Pins - all there
**All screw shafts - seem to be in place
**Diff - Front and Rear - No damage whatsoever
**Diff - Bewel Gear 43 tooth - no damage or teeth missing
**Diff - Bewel Gear 13 tooth - no damage or teeth missing
**Diff - Bewel Gear 20 tooth - no damage or teeth missing
**Diff - Bewel Gear 10 tooth - no damage or teeth missing
**Diff - shaft 4 bevel - no damage

**Fuel tank and pipe lines

**Dropped the engine in my second truck - RUNS PERFECT - flies - So in that case my clutch bell and clutch shoes must be fine. and also that the engine is not having any trouble powering the truck


I am missing something? I ve have ran out of things to check up on. If you guys have any questions, want more pix? videos? anything - just give us a shout.

oh and I havent ripped my truck apart yet!!! You help would be much appreciated

ViperX

few more pix

Revo Eater

What did you do before problem started? Change any thing? Any thing?

ELITE913

just to be sure, can u video tape the spur gear whale the truck is on the ground, and when its on the ground, if u put your handon the front, can u hold it stoped?

alvinl

Like Elite said, videotape the spur while you give it the gas on the ground. What bothers me is your RPM's go up, but it definitely does not move very well. I would guess either clutch shoes or slipper. Your slipper looks good in that one picture. Can you show a picture of your clutch shoes. Just take the clutch bell off and video the shoes while they are on the flywheel.

MiamizFinest

im thinking clutch shoes also.........................

ViperX

all internal transmission gears were changed including the idler - i changed the gears by the book - they were pretty striaght forward to change. i highly doubt they would be causing the problem as i ve inspected them several times - they look fine

ViperX

i m on the case - u ll have ur video soon

and the answer to ur other question i m not sure whether i ve understood it very well but i can tell u this. when i put my hand infront of the truck and try move the truck with my other hand by moving the spur gear, the spur gear slips showing very little resistence. my other savage's spur gear doesnt slip like that.

if that doesnt make much sense then plz ask again and i ll be happy to elaborate on that - i kinda think the problems lies along them lines

ViperX

i took the engine out including the clutch shoes and bell and dropped it in my other savvy x - the truck flew like a rocket - if i m not mistaken, doesnt that prove the clutch shoes and bell are good

ELITE913

what i meant was when u give it gas, can u hold the truck still, like with your hand or foot? (sorry if im unclear, its just hard to explain)

bennyblanco

if your spur gear slips when you spin it to make the truck move thats your problem screw the bolt all the way down!!!

ThunderbirdJunkie

My Feedback: (3)

stupid question.

is the truck starting off in 2nd gear by chance?

ViperX

not a stupid question but a question for a newbie maybe

the answer no i m afraid

a8man

Hmm I think all you can do is try out all the parts. Exchange the tranny, bulkheads, engine, etc one at a time to the other Savage and run it until the same happens to the other truck. Sorry, all I can think of.

EDIT: And also, the other day I called HPI about the X slipper clutch, and they told me that some of them have problems (however much you tighten it doesnt work). If you can, try to get the old slipper style and try it.

Coupe420

mine started slipping bad today and its only 1/8 turn loose. i locked it down tight and think it still slips a bit, id venture to say that slipper is the problem. i have the parts for the old style just didnt feel like taking the truck appart again. i heard that there was a problem with the slipper also, thats why some have the old style on them from the factory.


my truck was doing the same thing, in the grass it would go like 10 mph but the engine was screaming, but on-road it would eventually get up to spd. but if i held the truck still and gassed it, i could see the spur spinnin and the trans shaft not.

sure seems like what u have going on, yours is just a bit worse. but if i am 1/4 turn from locked the truck doesnt even move.

hope thats your problem, i know i could duplicate it by loosening up the slipper on mine. good luck


Keep breathin them fumes,

Coupe

savageman90

My Feedback: (12)

i agree with every one else either slipper of clutch shoes

ELITE913

well once he posts the video we'll find out.

ViperX

i can see my spur gear moving when i hold the truck still and give it throttle at the same time, but the driveshaft is spinning as well as the drive gear(18-23 tooth). looked underneath the truck to see whats hapenin and i found out that the cup joints are spinning both front and rear dogbones as well.

i want to be sure whether its the slipper clutch and i m not convinced that it is. can any one tell me the obvious signs to look for in a slippin slipper clutch. so i can reast assure that is where my problem lies.

digregoriod

to help isolate the problem....it has to be somewhere between the transmission and the engine. this is because lack of power is seen at both the front and the rear wheels. One thing you can do is disassemble the 2 speed down to the gear as there are parts in there that can break that would cause the truck to act like this.

ELITE913

hows that video comin?

ViperX

Request Video Link - video is showing the spur as the truck is held at one place on the ground while giving it throttle. shows the spur gear and other parts spin.
http://youtube.com/watch?v=uSihEXZYNpo

sorry for the delay man - was out till late lastnite. only just got a chance to take this vid. the video is probably the worst i ve ever taken but i ve added subtitles that should help

check it out and let me know what u think

brownstone101

do u have the little pins in the diffs? cause if u don't it will spin and theres enough friction on the teeth to make it go slow like that?!?! just trying to help who knows? cause if all the drive lines are moving and it goes to the diff then theres something worng in the diff area. ima say maby ur missing the little pins that the bevle gears sit in on both sides?!?!? what do u think? check the one in the diff cup remove the grube screw and get some tweasers and pull out that inside bevle gear. look if the pin is ok if not replace her with the 20 others HPI gives you

Revo Eater

Yea, the problem has to be in the diffs if the driveshafts are turning.

a8man

Now that you mention the pins; One logical problem would be the pins in the wheel hexes but I remember you saying that they were fine so I dont know. If the pins that go in the hexes are not there or not properly set, it would not push the car while on the ground but might do it in the air. Im sure you are tightening the wheel nuts down good right? The only thing I can think of is to take parts apart and try them in the other vehicle until you can find the problem.

ViperX

i ve posted a pic of the hexes, pins and how the wheels look from inside - they look immaculate