TA-05 IFS ver. II - Overdrive

Here's my new kit guys..

'Hope you like it..


Special thanks to:

Papee Ian aka "jebolution" for bringing this here from HK through RCMart.
Josh for the 3Racing center pulley
Jon for coming with me to Hobby Center where i got most of my OD mods
Ryan for letting me swap his 18T pinion gear.

We tried the overdrive mod earlier this evening so forgive me for the dusty parts.
and the wires.. looks like spaghetti on a plate.

Here we go..


Tamiya TA-05 IFS ver.II

- Tamiya Front One-way
- Tamiya Flourine Coated Damper Set (from my TT-01)
- Tamiya Touring Car Accessories
- HPI Volks Racing Wheels (but will later on be replaced with a Yokomo Enkei)
- HPI Bridgestone Potenza Drift Tires (T-Drift)
- JR Propo ES 579 Digital Metal Gear Servo
- Novak Slydr ESC with 7.5T Drift Motor
- Yeah Racing Tornado Cooling fan (really helps keep the ESC cool even with long drift runs)
- JR Propo 2.4GHz DSX3 Spread Spectrum Technology Remote Control System











Overdrive Mods

- Front : 39T pulley(kyosho) paired with 16T (3racing) center pulley = 2.44
- Rear : 33T pulley (kyosho) paired with 18T center pulley = 1.83
- Spur/Pinion : currently 70/20 but will change to 70/18 = 3.89

Bringing my FDR to 7.12 considering the ratio for the rear which brings more load to the motor

I used a kyosho center pulley as a tensioner. I put a tamiya bearing, the ones you put in the wheel axle (had to sacrifice one from my old TT-01), in it to reduce friction ~ heat.
Some spare plastic parts, and thank God I was able to save some parts of my tamiya mini 4wd. it did a lot of help.
I had to reamer the bearing's way in. It wasn't as easy but it was all worth it.

FYI: the length of the belt DOES NOT affect the gear ratio. it only serves as a link between the center and the front or rear differential pulley.
it's just like the pinion and the spur if you look at it. Only they're farther away from each other


Here are some close-up pics of the mods..

WWOOOWW!!! Well done sir lance... very nice in deed....
The very first Over Drive Kit in the Group and if I'm not mistaken in UAE!
Congrats to your new Project!!

Can I try it on Sat...(you did not mentioned my pinion waheheh)

JRacing wrote:

WWOOOWW!!! Well done sir lance... very nice in deed....
The very first Over Drive Kit in the Group and if I'm not mistaken in UAE!
Congrats to your new Project!!

Can I try it on Sat...(you did not mentioned my pinion waheheh)

sure thing..

hehe!
not yet installed..
i'll edit the first post..

thanks!

Good job lance. the kit's handling was great. felt like a DK when i tried it last night :king:

wow thats a nice OD you got there! yee lance.. i told you i have spare tension pulley that would fit in yur project... i'll bring it this drift meet ayt?

jebolution wrote:

wow thats a nice OD you got there! yee lance.. i told you i have spare tension pulley that would fit in yur project... i'll bring it this drift meet ayt?

a'ight!

we'll check it out this saturday..

thanks paps!

yeah!!! overdrive can i try it on saturday?

street_sweeper wrote:

yeah!!! oerdrive can i try it on saturday?

of course!

just a warning, maybe you'll pursue your papa to get you a belt driven chassis..

hehe..

well done sir:)

Hmm. I was suppose to be the first...grr...=P
You didn't use the Atomic tensioner?
Can't wait to try. +D

waahahahaaa :affraid: :affraid: :affraid: nice set up ser lance,,, i wish iwish...........

great job lance...

update:

replaced the pulleys as follows:

front: 40/16
rear: 33/23
counter-steer angle: more evident..

'will post pics and vid later..

thanks guys!

hey all,

this might sound like a noob question but i dont exactly know what overdrive is....i can see some mechanical changes to this belt driven chassis, but what is it and what does it do?......a wild guess from me is that it puts more pressure on the belt so giving more response and possibly speed..........

overdrive mod makes your rear wheels spin more than the front. sliding would be much more easier with better drift control. but will still depend on your driving skills of course

nice work lance.. lets see how it performs tomorrow.

Since the rear wheels spin more than the front wheels, you can sustain a better drift angle for a longer period of time.
Here's a video to help you understand. Focus on the front wheels.
https://www.youtube.com/watch?v=jfAUTE5x_jk&feature=related

@Jay
You forgot the mention that the overdrive mod doesn't really apply to a shafty. =P

for now
reckracing is already working on tims tt01..

it's actually possible to do this on a shaft driven chassis but there will be extensive modifications that has to be done..

it's only easier on a belt driven chassis because there is a vast availability of pulleys in different sizes..
though most of them will not snap into place, it's still relatively easier to modify to make it fit..

if only manufacturers would produce compatible bevel/differential gears for SD chassis, it would be much, much easier..
and i would prefer a shaft driven chassis over a belt driven one any day if it has the same availability of
parts as the latter..

i'm still for an SD.. :cheers: :cheers: :cheers:

Here are the latest pics of the chassis and the Overdrive mod..

Specs:

Front:
- 16T center pulley from 3racing (not moded)
- 40T differential pulley from Team Associated (increased the size of the center hole to fit the Tamiya FOW)

Rear
- 23T center pulley from HPI
mod:
1. had to cut it in half 'coz it was too thick to fit.
2. increased the center hole to fit the spur gear holder.
3. had to fix 2 medium-length grub screws to make it rotate with the spur.

- 33T differential pulley from kyosho
mod: had to increase the center hole to make it fit the Tamiya rear spool (front direct coupling)


Close-up on the center pulleys





Notice the screws encircled:
- had to let it protrude so it won't stick to the other pulley and avoid damage on the belt.






40T Front differential pulley





Chassis Pics:












Thanks to everyone for the help and inputs..

Now, it's time to counter-steer! :cheers: :cheers: :cheers:

Huwawaweee....
We need a video for this. =D

Update:

Got some new combi for the rear pulleys..

32/25..

now it's really, really counter-steering..



have a taste on saturday..