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Old 11-12-2008, 02:11 PM   #1
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Default Where to get small 64p spur gears?

Anyone know where I can get some small 64p spur gears? Like in the 70-tooth range? Does such a thing even exist?

I am trying to get a Tamiya TB-02 to reach close to a 4.2 FDR for USVTA and there's not much room to accommodate the gears. I haven't been able to find anything smaller than 78.
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Old 11-12-2008, 02:43 PM   #2
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Try changing the configuration and making your pinion bigger. For a Tamiya are you sure you don't mean 48p? I don't see the 64p gear below a 78 sorry. I use 48p gearing on my TT-01
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Old 11-12-2008, 02:52 PM   #3
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RW racing makes a 74,76,78 tooth
PRS makes a 76
Robinson makes a 78
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Old 11-12-2008, 02:59 PM   #4
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Smallest Spur made that I know of is a 72. PRS just released 72, 74 and 76 last week. They are very hard to get though as they sell out as soon as they come off the machines. To make anything smaller than a 72 PRS would have to go to a 10 hole diff ball gear instead of 12 line now.

PRS 72 Spur with 12 diff balls+Slapmaster diff Thrust Kit= smooth diff for ever!

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Old 11-12-2008, 04:58 PM   #5
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Quote:
Originally Posted by EAMotorsports View Post
Smallest Spur made that I know of is a 72. PRS just released 72, 74 and 76 last week. They are very hard to get though as they sell out as soon as they come off the machines. To make anything smaller than a 72 PRS would have to go to a 10 hole diff ball gear instead of 12 line now.

PRS 72 Spur with 12 diff balls+Slapmaster diff Thrust Kit= smooth diff for ever!

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Can you throw a 60 tooth pinion on your motor along with the 72 tooth spur?
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Old 11-12-2008, 05:10 PM   #6
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Superior Hobbies (superiorhobbies.com) has a large quantity of machined Xenon 74T spurs in stock.
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Old 11-12-2008, 05:31 PM   #7
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Quote:
Originally Posted by SpraydbySprague View Post
Can you throw a 60 tooth pinion on your motor along with the 72 tooth spur?
On some cars you can. On Hyperdrive Oval cars you can fit a 100 spur with 65 pinion! LOL

CEFX cars can take a 72spur with 60 pinion with no problem.

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Old 11-12-2008, 05:38 PM   #8
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Quote:
Originally Posted by dfiantii View Post
Try changing the cinfiguration and making your pinion bigger. For a Tamiya are you sure you don't mean 48p? I don't see the 64p gear below a 78 sorry. I use 48p gearing on my TT-01
Yep, 64p. There's just very little room and adjustability to work with in the TB-02, and if I can find a small enough spur I prefer to use 64p.

That 72t, if I can get it, coupled with a 43t pinion will give me an FDR of 4.35 (2.6 internal ratio) which should be great with the 21.5 Novak on our track.
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Old 11-12-2008, 05:43 PM   #9
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Originally Posted by EAMotorsports View Post
On some cars you can. On Hyperdrive Oval cars you can fit a 100 spur with 65 pinion! LOL

CEFX cars can take a 72spur with 60 pinion with no problem.

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WOW!
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Old 11-12-2008, 07:08 PM   #10
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Originally Posted by Larry Brown View Post
Superior Hobbies (superiorhobbies.com) has a large quantity of machined Xenon 74T spurs in stock.
i'm not finding any 74t 64p spurs. can you post a link?

thanks!
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Old 11-13-2008, 02:02 AM   #11
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The PRS 76 t Spurs have been avail. for quite some time...that's all we run on our Oval VELO track (coupled with a 63-65 t pinion) in 21.5/LIPO

I saw where MSA Distributing was supposed to get the NEW 72 and 74's, but I don't know where they go from there.

ROBINSON has made the 78t spurs for quite some time, and upon a recent inquiry they still sell them (and are planning to make some NEW smaller ones, along with LARGER pinions)
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Old 11-13-2008, 11:34 AM   #12
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Originally Posted by Larry Brown View Post
Superior Hobbies (superiorhobbies.com) has a large quantity of machined Xenon 74T spurs in stock.
After some further calculations it looks like a 74t will work perfectly for me, and I ordered one from Superior.

Thanks Larry!
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Old 11-13-2008, 06:36 PM   #13
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Quote:
Originally Posted by sneak191 View Post
i'm not finding any 74t 64p spurs. can you post a link?

thanks!
Not sure they're on the site yet, just call and verify stock and order by phone.
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