DrKucho

thanks for info P956LH , my plans are to put a novak 5800 BL motor , so i gues they will wear soon or late...

will research on those tech racing ones

DrKucho

this is it and yes, it include swing shaft protectors



anyway i might do a try on the delrin ones , that might be even better , delrin is very tough

Bikerbob

iTrader: (11)

Hey everyone, I have a boy running my Tb02 now, and we are having the same problem of the front diff gears stripping out.

IS the above quote the answer? The car I have has a light blue aluminum drive shaft in it already.. I have no idea if it is this specific one.

if it is.. then I am still stripping out the front diff.. after replacing the ring gear it still seems loose and ready to jump a tooth.. the "diffing" action is not smooth.

Hope someone can help.

Thanks
James

DrKucho

i dont know what is your problem but the other guy is saying that the lightweight shaft reducs play, i think the shaft play is a way to aviod striping gears when front crashes ...

Hebiki

iTrader: (26)

James,

what happens with the TB-02 is that the original shaft was too short. so the shaft floats in and out of the bevel gear causing the stripping. the part # i posted (when you quoted me) is definitely an improvement over the original shaft since it holds the bevel gear better in two ways.

1. it has a thicker front end piece so it holds the bevel gear snug and prevents side to side movement.
2. since it is longer, it holds it better front to back. less movement also.

now in order to "lessen" your chances of stripping a front gear you'll need to do the following things:

1. buy the new gears. for a one way, they are fatter and wrap around the support plate (carbon graphite). they are thicker and withstand hits a little bit better.
2. buy the new shaft. this will limit forward/backward movements
3. shim it so there's only a little bit of play. for the shaft this means shimming it forward or backwards so the drivetrain is free but doesnt bind. also shim your diff and front one way/diff (left to right, or right to left).

of course... dont hit stuff. hope that helps.

DrKucho

are you suure off all of that? i think it is the contrary , to avoid striping better leave some play in the shaft, why tamiya would leave such big play in the tb-02 stock shaft? that's cant be a lack of precision , that must have a purpose , and taking in mind the TB-02 is a cheap version of evo 3 , and that means cheap cars are made to be strong (as all plastic ones) i definitly think that the play of the shaft is for avoiding striping gears

when the has a frontal crash , the chasiss bends and compress front to back , shaft play avoid the bevel gears to push the diffgears

westerdude42

He's dead on right. We used to slide an extra bearing behind the spur on the shaft to keep it pushed forward.

DrKucho

still doesnt make sense to me , why shaft play would strip the gears?

westerdude42

The gears on the one way would get striped when the shaft pulled back on taking the crown gear with it. There was actually enough slop that it would disengage then act like a router bit when it came back in contact. Your one way gear would look fine, but would have a nasty flat spot in it. Don't forget also that chasis will flex both directions.

Hebiki

iTrader: (26)

pretty sure considering ive used the TB-02 in GT2 and GT3 for 3 years now at Tamiya's TCS series. I think i was the only one with a TB-02 at nationals last year. anyways.. you dont want to shim it tight. just enough play so that you can have a piece of paper inbetween. kind of like your spur/pinion gear mesh. same idea.

evo3 had the same problem. the original shaft was too short. tamiya made running fixes to try to cure the problem (reinforced, fatter one way gear and longer shafts with a thicker front end) thus the TB-02 inherited the defects.

Bikerbob

iTrader: (11)

OK, now I am in Canada, so maybe you cant help me directly.. but..

What is a good source for shims?

I have Yomomo belt drive cars that can use shims.. the TB02.. hinge pins when the arms or hubcarriers start to get loose..

I know there are aftermarket screw kits for rc.. specific to cars.. has anyone come up with a shim kit? A kit of .25mm .5mm etc.. shims bigger for output shafts.. hinge pins (pretty much same on any car) ... anyway you get the idea.

I would love to have a little plastic parts box with shims... anyone?

James

tamiyarcracer

TYamiya makes some
They have a kit with 0.1mm, 0.2mm, & 0.3mm thickness
53585 RC 3mm Shim Set - 3 Types
53586 RC 4mm Shim Set - 3 Types
53587 RC 5mm Shim Set - 3 Types
53726 RC 6mm Shim Set - 3 Types
53538 RC 10mm Shim Set - 3 Types
you can always go to tamiyausa.com and type "shim" in the search box for more info, or the part #

GuyIsDamGood

Hey TB-02 Guys; can you Help Me out on this?

I would like to know the Length(in Millimeters) of the TB-02 Carbon Battery Plate(49366 - $12.00).

I`ve heard it can fit a TA05 and a TB Evo 5.

Thanks

Take Care

rchoudini

51044 TB-02 N part (battery strap is included) and 51253 TB Evolution 5 B parts (battery strap included)
Have equal length battery straps.

GuyIsDamGood

Hey rchoudini; thanks for the info.

I believe the TB Evo 3`s Carbon Battery Plate(4305513) is the Exact Same as the TB-02`s Carbon Battery Plate(49366).
-If you have any info on this(to confirm what I`ve said); please get back.

Thanks

Take Care