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Old 03-24-2008, 07:18 AM   #5566
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Originally Posted by Nalves View Post
Hi,

Can you tell me how do you calculate the FDR (final drive ratio?)?

Thanks,
Nuno
http://gearchart.com/index.cfm?fuseaction=chart.create

Pick a car and put your spur gear and pinion
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Old 03-24-2008, 12:52 PM   #5567
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Default O-rings

Asphalt set ups from R. Cavalieri show he uses 4 o-rings on top deck...but where? The 4 outermost screws, 2 in front and 2 in rear? All 4 in front or 4 in rear?
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Old 03-24-2008, 01:29 PM   #5568
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Originally Posted by yyhayyim View Post
Asphalt set ups from R. Cavalieri show he uses 4 o-rings on top deck...but where? The 4 outermost screws, 2 in front and 2 in rear? All 4 in front or 4 in rear?
All 4 o-rings in the rear.
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Old 03-24-2008, 04:10 PM   #5569
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All 4 o-rings in the rear.
Thanks PW
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Old 03-24-2008, 04:45 PM   #5570
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just so everyone knows, the smc 5000 hardcase will fit the tc5 with no problems.

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Old 03-24-2008, 09:39 PM   #5571
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Hey guys. Great topic, I've been reading for weeks now, some great info indeed.
I'm at the early stages of building a TC5 for a friend of mine.
Car will not see the track, but will be used for pure speed and parking lot fun. Motor is a Mamba 6900kw and batteries will be Lipos 6000mha by Max or similar supplier.
I want to make the drivetrain as bulletproof as possible, what would you suggest as far as diffs?
One way, spool, aluminum diffs? front, rear?
Again, cornering will not be as crucial as a proper race setup (obviously it needs to turn fairly well), I'd just like to make the drivetrain as bulletproof as possible and have my friend go thru a lot of packs between eventual rebuilds.
Thanks in advance.
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Old 03-24-2008, 09:53 PM   #5572
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As far as bulletproof, Id do a one way in front and rear diff 1/4 turn back from tight. I've had very good luck with double diff, but building correctly is important. Just avoid a spool. Batteries you'll be limited to 6 cells...so I'd recommend the MM7700.
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Old 03-24-2008, 10:15 PM   #5573
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anybody use the 13mm novak rotor on a 13.5 in their tc5. wondering what you are geared at.

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Old 03-24-2008, 10:23 PM   #5574
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anybody use the 13mm novak rotor on a 13.5 in their tc5. wondering what you are geared at.

sipsipthekengkeng
I put a 13mm in about 2 months ago. Running from 4.8 to 5.2 on carpet with it (just switching over to asphalt now)
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Old 03-25-2008, 06:43 AM   #5575
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As far as bulletproof, Id do a one way in front and rear diff 1/4 turn back from tight. I've had very good luck with double diff, but building correctly is important. Just avoid a spool. Batteries you'll be limited to 6 cells...so I'd recommend the MM7700.
Vern, thanks for the tip.
I was actually thinking spool on the front..why you think is better to have one way compared to spool on the front, for reliability?
Thanks.
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Old 03-25-2008, 08:25 AM   #5576
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I'm building a TC5 now and I'm putting an aluminum diff in the front. The diff kit part #31182 comes with CVD blades but my original plastic diff doesn't require them. Is the slot on the aluminum outdrives wider and require the use of these? Should (or can) they be used with the rear plastic diff?

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Old 03-25-2008, 09:00 AM   #5577
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Hello, you MUST use the blades with the alu diff or they will eat it. don΄t need in the rear plastic diff.
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Old 03-25-2008, 09:10 AM   #5578
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Originally Posted by flatovercrest View Post
Vern, thanks for the tip.
I was actually thinking spool on the front..why you think is better to have one way compared to spool on the front, for reliability?
Thanks.
A spool is locked, when you hit something or heavy power on with that Mamba you will go thru blades and outdrives way faster locked. Soon with that power you will see ditch markes in the outdrives since the grade alum. used in them does not hold up very long. Also the oneway outdrives are steel and not alumimum.
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Old 03-25-2008, 09:46 AM   #5579
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A spool is locked, when you hit something or heavy power on with that Mamba you will go thru blades and outdrives way faster locked. Soon with that power you will see ditch markes in the outdrives since the grade alum. used in them does not hold up very long. Also the oneway outdrives are steel and not alumimum.
Very good, thanks for the explanation. I'll get a one way for the front.
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Old 03-25-2008, 10:16 AM   #5580
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Quote:
Originally Posted by Nalves View Post
Hi,

Can you tell me how do you calculate the FDR (final drive ratio?)?

Thanks,
Nuno
Nuno,

The best way is you built yourself a small spread sheet with some pinion and spur options to carry to the track.
You have to distribute some pinions in the column A and some spurs in row 2. In each field you enter a formula “=$B$2/A1*$F$1” where “$B$2” is one spur, “A1” is one pinion and “$F$1” is the TC5 final ratio 2.0.

......................................2,0
Pin/Spur 75 | 78 | 81 | 83 | etc
19
20
21
etc
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