Thanks for this, I got them for very cheap so I might sell them if needed.

Any other input about Orion lipos?

Can anyone help me on a good 1/12 scale competition car? is the speed merchant or the tamiya that much better the the crc xti? thank you

As has been stated before on this thread and many others, there are no 'bad' 1/12 scale kits... except maybe the Tamiya because in order to get the best Tamiya 1/12 car you need to scrap the whole kit and get all the option parts.
Bruce Carbone from Speedmerchant and Frank Calandra of CRC are two of the most knowledgeable RC racer and builders I have had the honor of meeting. The cubic effort they put into their craft is really something.

Does anyone know if CRC made a kit for converting the T Fource to link specs? Or, if not, what is needed, and if it would be worthwhile doing?

I figure CRC being early adopters of link might have thought ahead with teh T Fource

Do you guys run 64dp or 48dp?

Why?

64do. finer adjustment of gear ratio because it is also subjected to tire wear. beside, most of the car kit is shipped with a 64dp spur.

Ok this is what I ended with about the gearing ratios.

I'll be running a 10.5 motor in blinky on a small technical track with medium worn tires to begin with.

With little help I was considering a 60mm to 55mm rollout (tell me what do you think). I considered the wear of tires and chose pinions so that I can get 60mm rollout when tires are new (45mm diameter) and 55mm when tires are used (42mm).

The Corally has a 98t spur, the AE a 96t spur and the CRC a 80t.

I used this site http://www.gearchart.com/index.cfm?f...n=chart.create
and ended with a 41t pinion for the Corally, 42t for the AE and 34t for the CRC.

Just tell me if I'm doing something wrong

There is a last question I try to figure out:
Is there any advantage of running a smaller spur with a smaller pinion rather than a bigger spur with a bigger pinion when both give the same rollout?

Do you run the stock spurs on your cars? Or is it better to run a diff with more balls (with xenon vss spurs for example)?

There was a similar discussion a few weeks/months ago on this topic.
I think the conclusion is to run as big as a spur if possible to move the motor forward for balance reason.

For me, I run in an outdoor track, so, I keep the spur to be small to increase the ground clearance for the gear. This is in case of small stones on the track.

I run Yokomo R12 which come with xenon spur. But I run Kimbrough because of the diff cover. Kimbrough spur can have a optional diff cover to protect again dirt so, I don't need to rebuild my diff often.

see http://kimbroughracingproducts.com/s...ategory_id=216

thanks, we haven't many outdoor tracks that are clean enough for 12th scale around here, it must be great! Do you have any pic or vid of your track?

good to know for the gears, I'll start with 41/96 on the AE, 42/98 on the Corally and 34/80 on the CRC to begin in 10.5 blinky to have the same roll out (55 to 60mm) on each car

I'll be using PRS pinions with original spurs to start with and upgrade to Kimbrough, PRS or even Xenon spurs in the future

What tire traction compound do you recommend on carpet with magenta/ pink tires and medium to low grip track?

Just thought i would share a video of 10.5 blinky racing at our track in Australia.
Its the only indoor carpet track in the country and is only 3 months old .

+ YouTube Video

This will all depend on the size of your track. We run on carpet at 40'x40' track (this is a small technical track) in 17.5 blinky w/ my Serpent S120LT I am at around 78 for a rollout whereas the two faster guys are 82. We are averaging around 43-44 laps per 5min race. I am using 44/80 for gearing. Where as the CRC guys are 44/76. I am going to try 44/77 next weekends race and see what happens.

Last year when I ran open I ran 10.5 w/ boost @40/80 whereas the fastest guys were 8.5. I was .4 seconds slower...

Why don't you just buy the new Corally they just released? SMC (I think was them) used to make a 1s saddle pack for this very reason, t-bar cars. I don't think they are made anymore though...

ANY of the new 1/12 cars are competitive... It will really boil down to what you want to spend. A CRC XTi can be had for under $200 where everything else will be $80+ that. I personally run Serpent S120LT and absolutely love the car. I got a great deal on it from a sponsored driver w/ spare parts that I couldn't pass up. Our track consist of x2 Serpents, x1 Associated, x1 Top Racing and the rest CRC's... I really like to run something that others don't but the down side is lack of help w/ car and parts if needed in a pinch...

We already bought the last AE and CRC, the SP12X is more a "challenge". It has alrady been used with a lipo by a driver without any mod so it's possible. We'll see when it arrives. And speedzone which is the brand you're talking about for the 1s saddles is thinking about releasing them again I even did a thread for that and contacted Gavin Creado:
http://www.rctech.net/forum/electric...-pan-cars.html

Funny, while we in stock racing discharge our lipo's to 3V to give them full cycles, to have an as low as possible internal resistance of the lipo.....