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Old 08-12-2005, 03:16 PM   #646
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slow4dr:

You can use a 17 tooth pinion in with the motor mounted in the 16 hole, 19 in the 18 hole and 21 in the 20 hole. The gear mesh is a bit tight, but it will work, as the gear slop of the "correct" size pinion is a bit excessive.

The Tamiya stock pinion gears wear fairly quickly. You can tell they are too worn when the gearbox starts making excessive noise, and examination of the pinion will find that the gear teeth become very sharp pointed. To avoid this, use the Tamiya optional pinion gears that are hardened alum - they hold up MUCH better than the stock (2 to a package) pinions. Tamiya still makes the 20T in the hardened version, and used to make the 19T as well (now discontinued, but still some around in shops or overseas). The tooth profile is a bit different on the hardenened gears, such that the 19 tooth will fit easily in the 18 tooth motor mount hole.
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Old 08-12-2005, 03:50 PM   #647
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Default 21 tooth pinion

Take a drill and a drill bit (5\32) and drill out your moter mount screw holes this will let you install a 21 tooth pinion and also get it to mesh with the spur gear. You will need two small washer's for the moter mount screws to hold it in place. I run a Trinity monster moter with a 21 tooth pinion and a TAO3 ball diff and this car is so fast and also handles great to in the tight stuff.


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Quote:
Originally Posted by Slow4dr
I guess three questions was a few too many. I'll withdraw those and ask one; How do you fit something other than a 16/18/20 tooth pinion on an M03?

Last edited by RED-LINE M03; 08-12-2005 at 03:52 PM. Reason: ******
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Old 08-12-2005, 04:53 PM   #648
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Good stuff guys... thanks. Sounds like a 20 tooth might be right on for my Epic ROAR stock motor.
Going back a few posts, anyone try the Robinson pinions?
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Old 08-12-2005, 09:31 PM   #649
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Just to let you know any drilling or cutting of your chassis. This will make it illegal to run in the tamiya championship series. Also your pinion will need to remain tamiya brand. This is only if you plan on running in that race at all.

Peace Aaron(W-W)
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Old 08-13-2005, 01:19 AM   #650
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Been busy during a 5 week break from racing (family commitments), totally rebuilt my mini with new shocks,tyres,rims,locked the diff (shoe goo) & even gave the chassis a coat of paint...YEAH i know it`s not going to last..BUT it will look "BLING BLING" till the first race anyway..

Cheers
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Tamiya mini cooper-new-shocks.jpg   Tamiya mini cooper-new-shocks-back-.jpg   Tamiya mini cooper-new-painted-chassis.jpg  
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Old 08-13-2005, 02:07 AM   #651
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Quote:
Originally Posted by NOZ69
Been busy during a 5 week break from racing (family commitments), totally rebuilt my mini with new shocks,tyres,rims,locked the diff (shoe goo) & even gave the chassis a coat of paint...YEAH i know it`s not going to last..BUT it will look "BLING BLING" till the first race anyway..

Cheers
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Old 08-13-2005, 05:44 AM   #652
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Quote:
Originally Posted by NOZ69
Been busy during a 5 week break from racing (family commitments), totally rebuilt my mini with new shocks,tyres,rims,locked the diff (shoe goo) & even gave the chassis a coat of paint...YEAH i know it`s not going to last..BUT it will look "BLING BLING" till the first race anyway..

Cheers
Looks really cool except your right it won't last. Would be cool to be able to get the chassis in different colors.

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Old 08-13-2005, 05:46 AM   #653
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Default one way diff

Has anybody tried taking the balls out of a TAO3 diff and locked it down to make a spool?

How did it work compared to the ball diff?

Last edited by RED-LINE M03; 08-13-2005 at 05:50 AM. Reason: *#@**
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Old 08-13-2005, 03:43 PM   #654
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killingtime I see what you mean with the short cvs shock and springs saw then on pushers car that thing was almost scraping the ground.
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Old 08-13-2005, 03:52 PM   #655
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Quote:
Originally Posted by moot
your a homo!
YEAH flogged you so much that you SOLD your mini

Cheers
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Old 08-13-2005, 07:33 PM   #656
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Sorry to whore up the thread again... anyone know the internal gear ratio of the M03? Trying to calculate rollout with these HPI X-Patterns. They are way small.
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Old 08-17-2005, 02:44 AM   #657
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Is all up weight an issue in overall performance for my MO3, yes or no?
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Old 08-17-2005, 06:55 AM   #658
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Quote:
Originally Posted by Slow4dr
Sorry to whore up the thread again... anyone know the internal gear ratio of the M03? Trying to calculate rollout with these HPI X-Patterns. They are way small.
From the Tamiya website....
http://www.tamiyausa.com/product/ite...oduct-id=58295


The reliable, user friendly, and fun M-03L chassis has been paired with an accurately recreated new BMW Mini Cooper Body. The M-03L chassis features a front mid-ship mounted motor and front mounted battery, to put more weight on front drive wheels. Requires a 2-channel radio and 7.2V battery.


Specifications
Chassis Type: M-03L
Scale: 1/10
Length: 13.86 inches (352mm)
Width: 6.61 inches (168mm)
Wheelbase: 9.41 inches (239mm)
Front Tread: 5.43 inches (138mm)
Rear Tread: 5.43 inches (138mm)
Weight: 1.94 lbs. (878g)
Chassis: ABS Monocoque
Suspension: 4 wheel independent
Damper Type: Plastic coil over friction
Drive Train: Sealed gearbox
Engine: Electric 540
Gear Ratio: 5.8:1
Differential Type: Bevel Gear
Wheels & Tires: 5-spoke / Radial
Body Type: Clear/Polycarbonate
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Old 08-17-2005, 07:44 AM   #659
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Quote:
Originally Posted by Nova F1 Racer
Gear Ratio: 5.8:1
Although this isn't the internal ratio, it can be used as a basis for calculating a gearing constant with the standard spur.

Multiply 5.8 by the standard pinion, then divide that number by whatever pinion you want to use to get the ratio.
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Old 08-17-2005, 11:59 PM   #660
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Quote:
Originally Posted by highasakite99
Is all up weight an issue in overall performance for my MO3, yes or no?
Weight is an issue with all race cars...the less weight the better..

But with the Mini you are limited to what you can shed.Best to get everything low as possible to lower the centre of gravity,which will reduce the chances of traction rolls,which is a BIG prob with the Mini.

Try & get the ride height about 3mm front & about 5mm rear,which is a good starting point.

Cheers
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