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Old 07-13-2010, 01:25 PM   #2311
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What do you mean exactly by DRAG, off throttle the car looses to much speed or at top speed?
it's the lack of weight, if the drivetrain was heavier the car would roll smoother in the slower corners. not worth enough to give up the benefits of the lightweight drivetrain though.
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Old 07-13-2010, 01:47 PM   #2312
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it's the lack of weight, if the drivetrain was heavier the car would roll smoother in the slower corners. not worth enough to give up the benefits of the lightweight drivetrain though.
I am all for reducing weight, but I have always thought that the small diffs of the NT1 etc., were actually a negative; and the wrong place to lighten the car up. The loss of momentum when you could roll through a corner would make car slower. Our we had a RR with a spool years ago which rolled through the corners better after I installed a (heavier) front diff. My thoughts only, but who am I to know.

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Old 07-13-2010, 02:11 PM   #2313
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I am all for reducing weight, but I have always thought that the small diffs of the NT1 etc., were actually a negative; and the wrong place to lighten the car up. The loss of momentum when you could roll through a corner would make car slower. Our we had a RR with a spool years ago which rolled through the corners better after I installed a (heavier) front diff. My thoughts only, but who am I to know.

Kindest regards,
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you are fully right in the fact that a heavier drivetrain continues to roll easier because our centax clutches are either on or off so you can't really roll the throttle like in electric.

it is basically like using a heavy flywheel/clutch setup, when you use a lighter flywheel your engine spins up faster and ultimately requires less work to reach high rpm but when it engages it will take more effort to continue spinning (so you have to use higher rpm's)
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Old 07-13-2010, 02:12 PM   #2314
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Kits & Parts back in stock !
http://rcmarket.com.hk/index.php?cPath=51_99_124_219
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Old 07-14-2010, 03:32 AM   #2315
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Go to http://www.teamxray.com/teamxray/pro...me=XRAY%20NT1R and download "X-RAY NT1 Set-up Book (pdf) - English', and "X-RAY NT1 Quick Reference Table". The Set-up Book is the most complete set-up manual you will ever find for any car, a must for most RC fans. Page 29 in the set-up book will explain roll-centers. Page 2 in the Quick Reference Table lists all setup options, and should be printed out and kept as a quick reference when looking for solutions.

Ps. Some manuals do not recommend changing front roll-center settings, but the rear roll-center is listed as the second step to take to get better rear grip (reduce oversteer) in the X-Ray quick reference table, and it works for us.

Kindest regards,
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Thanks Lars great tips even though i couldn't believe the order that must be taken. Will try their technique as i am sure they know what they are doing

Regarding Capricorn diff mod, Conclusion seems that the K car diffs are better due to heavier weight which aid removing the drag?
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Old 07-14-2010, 09:04 AM   #2316
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Thanks Lars great tips even though i couldn't believe the order that must be taken. Will try their technique as i am sure they know what they are doing

Regarding Capricorn diff mod, Conclusion seems that the K car diffs are better due to heavier weight which aid removing the drag?
no, the car is better with less drag
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Old 07-14-2010, 09:13 AM   #2317
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brain,

post some pics of ure set up.
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Old 07-14-2010, 01:51 PM   #2318
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and is it worth spending all that money, did you time yourself? saw a lap time results or was it just a feel?
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Old 07-14-2010, 03:25 PM   #2319
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Thanks Lars great tips even though i couldn't believe the order that must be taken. Will try their technique as i am sure they know what they are doing

Regarding Capricorn diff mod, Conclusion seems that the K car diffs are better due to heavier weight which aid removing the drag?
I think most drivers work out what's best for them and their own driving style. The end result of different drivers setups are very different at times, and they don't like the other drivers set-ups, when driving each others cars to compare. I see it all the time.

We go for lots of rear traction and smooth drives through the corners, while some very experienced drivers prefer a car that is a little looser so they car throw that cars around at the corners. It works well for for those that are able enough to control it.

I wouldn't necessary go for exactly the set-up order that the quick reference suggests, but it gives you a good idea of what to look at.

Kindest regards,
Lars.
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Old 07-15-2010, 01:57 AM   #2320
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I think most drivers work out what's best for them and their own driving style. The end result of different drivers setups are very different at times, and they don't like the other drivers set-ups, when driving each others cars to compare. I see it all the time.

We go for lots of rear traction and smooth drives through the corners, while some very experienced drivers prefer a car that is a little looser so they car throw that cars around at the corners. It works well for for those that are able enough to control it.

I wouldn't necessary go for exactly the set-up order that the quick reference suggests, but it gives you a good idea of what to look at.

Kindest regards,
Lars.
From which setup shall i start, from the stock setup there is on the Evo 2?

Thanks Lars
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Old 07-15-2010, 04:20 AM   #2321
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the RRR is a great car and upgrading isent neccesary.

i just wanted to do something unique and a project, so i decided to put capricorn diffs into it.. by doing that, doesnt mean the car is better, or i will be better. at the end of the day, it comes down to driving and set up.
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Old 07-15-2010, 06:07 AM   #2322
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the RRR is a great car and upgrading isent neccesary.

i just wanted to do something unique and a project, so i decided to put capricorn diffs into it.. by doing that, doesnt mean the car is better, or i will be better. at the end of the day, it comes down to driving and set up.
Was all excited about this project but you lost me all of a sudden

Some post before someone spoke about contact foam tyres are they any good and is Schumacher the ones who design/manufacture?

Thanks
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Old 07-15-2010, 06:20 AM   #2323
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if you wanna do it, go for it.

the RRR with xray/capricorn diffs in the right hands is going to be hard to beat

i just started mine for 2mins and bleeped around the drive way. to make sure the car is running before i head to the track this weekend. noticed a big difference already... acceleration was defently the biggest noticable difference and car seems very smooth

clutchbell needs abit of shimming as its abit loose. will fix that up tommorro before i hit the track this weekend and give it some testing

engine also seemed to be very lean, maybe its the lighter drive chain causing it to lean out?
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Old 07-15-2010, 07:58 AM   #2324
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Will go for it than even though i fear a bit that if the engine has more power due to a lighter driver train the rear tyres will suffer a bit more wear.

Below is a URL of one of my races that my pit crew took.

http://www.youtube.com/watch?v=Kajw5...eature=related

i am the first car with the orange and blue stripe body shell. The track was origanlly designed for electric.

Surface is bumby through out, as the asphalt is made out of quite big pieces of rocks a bit slippery and suffer from understeer. Infact we run 37 fronts and 40 rear.

I really would like to know how would you setup the car on such a thight track. Light diffs really helped going around the tight corners but make the car unpredictable in certain corners.

Thanks Guys
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Old 07-15-2010, 08:20 AM   #2325
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Was all excited about this project but you lost me all of a sudden

Some post before someone spoke about contact foam tyres are they any good and is Schumacher the ones who design/manufacture?

Thanks
Contact tires basically come from the brain of ATS/Twister with the backing of Schumacher. The US distro is http://www.contactrctires.com

Current ROAR sedan national champion and 1/8th Euro champion tire, so they must have done something right.
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