Need Help Plz About To Smash My Car Up Lol.......

[hoppi05]

Alright guys and girls... my TT01 is giving me no end of trouble i have had it in pieces over 10 times and not solved this so i had to post this up in as i am in need of tamiyaclubs wealth of knowledge....

here are some pics and even a rudy video in hope someone knows the answer to this? i have even removed every hopup off it and rebuilt as standard?..... (i stripped it to add the hopup adjustable steering thats how this came about)

Heres whats happening:-

as soon as i put the front gear box cover on and tighten the screws so its nice and tight the car wheels will not move? slicken the screws off a few turn (2mm) and the gearbox is fine not a noise crunsh or anything just as it was before?....

heres a pic of how i have to have the front gearbox so i get no crunching?... and then some real short vids of the noise i get once tight and then loose?

http://s14.photobucket.com/albums/a320/hop...28042008006.flv

http://s14.photobucket.com/albums/a320/hop...28042008005.flv

hummmmmm not sure the vids are working?.... ill sort them in a lil while if i can (gosh something else i cannot do lol)

Well if anyone knows can they let me know asap as i am totally lost and its sending me round the bend lol

Cheers

[hoppi05]

well i have narrowed it down too the front part of the chassis... when i put the differential gear in with i just get grinding? if i put it in the rear its fine and vice verse?... does this mean the front of the chassis is broke or worn some how? as i say it was fine before i opened it?.

if i turn this by had i get grinding noises even without the propshaft gear in?

if i put the propshaft gear in and turn that i get grinding noises too?

[taliesin]

it just about has to be a small piece of grit binding things up. this sounds infuriating, so i feel your pain. try some canned air and blast all the parts. then feel each and every part with your fingers to see if there is a burr or something stuck to a part that is causing trouble. if it worked before, i can't imagine what else it could be other than some debris causing a bind.

[hoppi05]

Cheers mate but there all real clean? and if i swap everything to the rear theres no problem?.........

[taliesin]

makes me wonder if there's a small crack in the front housing that is causing problems. weird that it is only in front.

[hoppi05]

i know its really dun may head in lol ill have a look for cracks but as i say it was fine before?

[markbt73]

That little piece of grit in the pinion gear is enough to lock it up. Bevel gears are precise parts, and even a tiny grain of sand might as well be a boulder.

Clean both gears thoroughly (an old toothbrush works great) and clean out the housing, and try again.

[hoppi05]

well ill try again wednesday and see if ican get anywhere i have tried 17 times today lol and there is no muck locking anything up, if i swap the parts to the rear there fine?

This is where i am ther rear works fine as it did very smooth, the front however...

if i take the gearbox cover off and the diff out and the propshaft gear out i am left with the prop shaft holder bit, that turns fine without anything else, i put the propshaft gear on and it turns OK a lil noise if i push a little on it as in a gear box and turn it it grinds?..... Now if i take the propshaft gear out and put the diff in and start to turn it it grinds? if i push on it so to represent the gearbox cover is on it grinds real lowd!? if i put all the parts in together and screw it back up and try to turn the wheels i have to turn it real hard and it just clicks?????? the more i loosen the screws the better it gets but my gearbox is half open by then!?

am at my tethers end tonight and i have put it away, but walking by the bin it was real tempting to just chuck it in! thats how bad it is lol i have never before been so stumped by anything.... I am thinking of just buying a new chassis of ebay and giving it ago... unless anyone wants to try and fix the unfixable TT01 lol thats its new name when ever it get sorted unfixable is200 (lexus body) lol

anymore thoughts or recomendations please speak up or if you think you can take on the challange ill send you the dam thing lol

Cheers Rye

[andi4x4]

Rye,

I have several TT-01s and never had this problem - however - I have had a diff lock up on me -

Pull it all apart again and start again from scratch - as has already been mentioned CLEAN EVERYTHING ! event the slightest little bit of grit will cause problems.

inspect every part for any signs of rubbing/catching - this will give you a clue as to where there may be a problem - also - check your dogbones and cups - the problem may be here if it only happens when they are fitted - try it without them if you havent already.

Pull the shaft gear off - pull out the bearings and clean them - clean out the recess where the bearing sit - clean the shaft - when you put it all back together make sure you have pressed the bearings all the way home - if they are not all the way in, the shaft gear will bind on the diff gear. If you have got ANY dirt on the bearings, or the spacer that goes between them, they will not go back in all the way.

Also - make sure you fit the diff the right way around - I cant remember off the top of my head if it will actually go in wrong, but, always worth double checking !

And finally - the TT-01 is the most basic of chassis - build it and forget it ! it is virtually maintainance free - only grease/oil the parts inside the diff housings - DO NOT oil or grease your dogbones/drivecups - the lube will only attract dust and grit which will speed up the wear rate.

Good luck !

[gazwilts]

well ill try again wednesday and see if ican get anywhere i have tried 17 times today lol and there is no muck locking anything up, if i swap the parts to the rear there fine?

This is where i am ther rear works fine as it did very smooth, the front however...

if i take the gearbox cover off and the diff out and the propshaft gear out i am left with the prop shaft holder bit, that turns fine without anything else, i put the propshaft gear on and it turns OK a lil noise if i push a little on it as in a gear box and turn it it grinds?..... Now if i take the propshaft gear out and put the diff in and start to turn it it grinds? if i push on it so to represent the gearbox cover is on it grinds real lowd!? if i put all the parts in together and screw it back up and try to turn the wheels i have to turn it real hard and it just clicks?????? the more i loosen the screws the better it gets but my gearbox is half open by then!?

am at my tethers end tonight and i have put it away, but walking by the bin it was real tempting to just chuck it in! thats how bad it is lol i have never before been so stumped by anything.... I am thinking of just buying a new chassis of ebay and giving it ago... unless anyone wants to try and fix the unfixable TT01 lol thats its new name when ever it get sorted unfixable is200 (lexus body) lol

anymore thoughts or recomendations please speak up or if you think you can take on the challange ill send you the dam thing lol

Cheers Rye

are you sure you are using the correct size screws for everything? as per the manual? bit of a mystery this, but im sure everyone will try to help!

[hoppi05]

Cheers for the help guys i will do as andi4x4 says so ill let you know wednesday...

cheers Rye

[billg4]

is the spacer between the bearings on the shaftb with the small crown gear the right one, dirty, or bearing not seated?

I'm betting it is something along that shaft where your problem lies.

[pikachoo75]

hi there,as gazwilts has mentioned,it could be a screw that is either sticking through and jamming your diff or bevel gear.failing that it could be that the plastic of the front gearbox has been forced out by a slightly longer or wider screw so check that there are no "white" stretch marked areas inside the casings,as these could bind the gears like a brake when you tighten it all together.

its kinda hard to describe what i mean but if you screw in the screws one at a time with the gears out you should be able to see if any of the swelling occurs.

hope you find whats wrong soon!

[Incredible_Serious]

A mate had something like this happen to him, and this was the cause.....

Where you mount part A14 to the rear gearbox, it uses MA1 3x12mm self-tappers....

Where you mount part A14 to the FRONT gearbox, it uses MA2 3x10mm self-tappers....

If someone has put the 12mm screws in the front (easy to do, 2mm difference on a screw), the plastic gets bulged in on the inside of the gearbox housing, and hits the diff ring gear. Only ever noticeable when the gearbox is fully tightened.

Try that mate, see if it helps.

Alex

[taliesin]

these last 2 posts sound spot on and i bet that's the problem. it would make sense and it wouldn't be obvious until you tightened the screws all the way.

[taliesin]

so i'm dying of curiosity here, was that the fix? it sure seemed like pikachoo75 and incredible_serious nailed the solution.

or perhaps there is a tt-01 in a rubbish bin somewhere at the moment...?

[hoppi05]

Cheers guys i have just got in i am going to look at it tmoz as i am on my way back out asa, cheers for all the help!... i do hope its the screws? and if i is ill just get another tub off ebay...

oh and the shaft looks all good? and the little black washer thing is there between the bearings so cant see that been the prob?...

cheers again and i will let you know tmoz about 1pm ish for those that cant wait....

[gazwilts]

so i'm dying of curiosity here, was that the fix? it sure seemed like pikachoo75 and incredible_serious nailed the solution.

or perhaps there is a tt-01 in a rubbish bin somewhere at the moment...?

um i thought i came up with the screw thing 1st. me me me me me!!! what did i win!

[taliesin]

sorry gazwilts, no offense intended

you win.....................drum roll please....................... some good karma for helping solve a problem for some confused soul.

i'm fairly new to this addiction, so i try to follow all of these "i've got a problem" threads so when its me pulling out my hair, i might hopefully remember a clever solution posted here!

i bought a sand rail dune buggy once and there was no internet forum to help figure out the weird problems, and the local mechanics and vw people just told me, "if you want go and mess around with stuff like that, you just be your own mechanic and don't ask for our help." NOT very nice people and i eventually left that hobby in frustration. i would like to be the guy with clever solutions some day, but for now i'm lurking and learning.

[hoppi05]

Well guys i have done all you surgested and i still have the problem!?? its nice and clean theres not a dodgy mark or crack anywhere?

i have taken the propshaft out and the fastend the front up and still get grinding? if i tighen it full the axles will not turn?

heres where i am:-

all nice and clean

it works when like this:-

it doesn't work when like this:

haha am so confused?????

[hoppi05]

i have just done another complete swap front to rear all gears bearings gearbox cover the lot and all the front parts work on the rear? this is so strange how come they dont work when on the front? i can now only assume there is an issue with the chassis of the car?

oh shack pants i think i know what it is hahha i hope so be back soon!

[thesnake505]

yo, have you tired fitting the rear casing to the front diff, and see if it still locks up??? also are you putting the diff in the rite way round? cause it will fit the wrong way, but this would lock it up??? snake

[hoppi05]

hahahah its sorted! dam that was frustrating! well ill show what was causing it and trust me it did not register untill you guys started mensioning screws....

this is what caused it:

i fitted a new one of these when i was putting the new adjustable suspention mounts and tie rods on. now it struck me at the time how dam hard it was to screw the thing in place?.... (some ppl may already know whats happend?) well the screws were long well very long and they have imprinted and pushed out the inner linning of the gearbox and this was causing the spur gear to rub and grind on the pushed out placstic. this was always behind the spur gear so i could never see there ...

it just hit me when i was typing an earlier reply and i went straight for the dremal thing and grinded the imprints smooth again and now all is fine! wooooo

can i just say thanks for all the responses and help offered it is greatly appreciated! also if anyone ever needs a TT01 building in one minute i can do that now and 2 minutes with my eyes closed lol

Cheers Rye

Oh and let that e a warning to ppl buying any braces for there cars check the screw lenghts 1st..........

now i need to go buy some more greese to rebuild it lol

[gazwilts]

hahahah its sorted! dam that was frustrating! well ill show what was causing it and trust me it did not register untill you guys started mensioning screws....

this is what caused it:

i fitted a new one of these when i was putting the new adjustable suspention mounts and tie rods on. now it struck me at the time how dam hard it was to screw the thing in place?.... (some ppl may already know whats happend?) well the screws were long well very long and they have imprinted and pushed out the inner linning of the gearbox and this was causing the spur gear to rub and grind on the pushed out placstic. this was always behind the spur gear so i could never see there ...

it just hit me when i was typing an earlier reply and i went straight for the dremal thing and grinded the imprints smooth again and now all is fine! wooooo

can i just say thanks for all the responses and help offered it is greatly appreciated! also if anyone ever needs a TT01 building in one minute i can do that now and 2 minutes with my eyes closed lol

Cheers Rye

Oh and let that e a warning to ppl buying any braces for there cars check the screw lenghts 1st..........

now i need to go buy some more greese to rebuild it lol

thats great news man, enjoy your car

[hoppi05]

Yeah am pleased its doen no damage, ive given it a run today with a few of the hopups on and its mint +slicks are great!

cheers guys