ROOLOUT and spur

Ruben_qlc · **Posted:** Sat Jun 25, 2011 19:58:30

Hello everybody.

I have two questions:

In the document: XRAY Gear Charts Table (ratio 1.9), the part that named: Rubber Tire Rollout Chart (63mm diameter)
What is this?
This reffer to get more traction in low levels of RPM???

About spur:
For asphat, the bigger spur is better than smaller spur???
I think that bigger spur give you more traction, is this correct??

Thank you very much friends.

Regards.

Stanley Bąk · **Posted:** Sat Jun 25, 2011 20:41:41

Ruben_qlc · **Posted:** Sat Jun 25, 2011 21:42:23

Thank you.

Don not give more traction, but can give more acceleration??

Stanley Bąk · **Posted:** Sat Jun 25, 2011 22:23:58

yes or more speed:)
bigger pinion spur gives better top speed but less acceleration
smaller spur gear gives better top speed but less acceleration

smaller pinion gives more acceleration but worse top speed
bigger spur gear gives more acceleration but worse top speed

Ruben_qlc · **Posted:** Sun Jun 26, 2011 18:31:08

AAA okk.

And about the module, 48p or 64p ???

Thank you.

Marek Gadomski · **Posted:** Sun Jun 26, 2011 19:02:29

64p is more silent and less stones on crap asphalt goes between tooth's. But i use 48 p.

Stanley Bąk · **Posted:** Sun Jun 26, 2011 20:45:05

with 48p you can make lower FDR

Ruben_qlc · **Posted:** Mon Jun 27, 2011 14:41:19

Conclution, 48p is better on asphalt.

And on carpet?

Thank you friends.

Bytestream · **Joined:** Mon May 02, 2011 20:27:54 **Posts:** 46

The main difference is that with 64P you have more fine tuneing/gearing options. You can increase or decrease your FDR in finer increments. I run 64P indoors and outdoors without any problems.

As far as FDR goes, RW racing makes Xray style spur gears down to 72T, which should get you lower than you would ever need to go.

Stanley Bąk · **Posted:** Thu Jun 30, 2011 13:43:44

i cant find fdr 4.0
um,i mean that i can have it with 72 and 34,but i cant find anywhere 72 spur
can u help me?

Bytestream · **Joined:** Mon May 02, 2011 20:27:54 **Posts:** 46

Stanley Bąk · **Posted:** Fri Jul 01, 2011 08:14:30

Bytestream · **Joined:** Mon May 02, 2011 20:27:54 **Posts:** 46

Stanley Bąk · **Posted:** Fri Jul 01, 2011 13:37:14

ok,thanks
i'll buy this 96 and 45

flo0206 · **Joined:** Mon May 09, 2011 09:56:51 **Posts:** 38

Bytestream · **Joined:** Mon May 02, 2011 20:27:54 **Posts:** 46

flo0206 · **Joined:** Mon May 09, 2011 09:56:51 **Posts:** 38

Lots of manufacturers make pinions. I use PRS - Precision Racing Systems - pinion gears, they have 64P in a range of 16-65. They are high quality items and the price is right (around US $5).

I've never tried Xray pinions .. I'm sure they are nice, but they should be nice for the price you pay, which is almost 3x as much as others (US $13). Xray also has gaps in their range, like not having the 45T you are looking for.[/quote]

The xray ones are real nice and they seem to last longer than some others i had before
they are also real narrow. i had problems with an other manufacturer because pinion was to wide and rubbed the belt - fast wearing and loss of speed

thanx - i'll have a look at the PRS one

greets flo

YELLOWSHARK · **Posted:** Sat Jul 02, 2011 17:28:18

XRAY - Model racing cars

ROOLOUT and spur

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