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Old 02-13-2006, 09:23 AM   #3376
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Can you post how much does the amp regulator and battery weigh? I would like to do this, but this only means I need a double Y so I can hookup my PT, Amp Regulator, battery and telemetry system..
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Old 02-13-2006, 09:28 AM   #3377
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I think the regulator hooks up inline with the battery. so you would still need only 1 Y. The only reason he had the double Y is because of the capacitor. I dont think you need the capacitor especially if you are running a lipoly. That is for using the 6v nimh packs for when they start to lose voltage. the VXR regulator supplies 6.7 volts to the reciever so you should not need the extra voltage.
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Old 02-13-2006, 09:31 AM   #3378
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Guess your right...
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Old 02-13-2006, 02:12 PM   #3379
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Quote:
Originally Posted by Scott Fisher
I will be testing out the carbon fiber chassis next weekend at our regular club race. I will let everyone know what I think after that as long as we get good weather.
Scott,
Did you do some testing on the carbon chassis this weekend?

Thanks
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Old 02-13-2006, 03:18 PM   #3380
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mistercash,
that's a pretty cool avatar! maybe you can make one with the mtx4? i'll steal it
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Old 02-13-2006, 03:28 PM   #3381
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Jo, I like the one you have now better.
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Old 02-13-2006, 05:52 PM   #3382
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Quote:
Originally Posted by Jo Gutierrez
mistercash,
that's a pretty cool avatar! maybe you can make one with the mtx4? i'll steal it
Send me the MTX4 and I'll make the avatar for you.
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Old 02-13-2006, 11:29 PM   #3383
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Quote:
Originally Posted by Billy_Cheah
Hi,
I have stripped 2 2nd gear due to the bearing came out of the 2nd gear housing and caused the 2nd gear touch the 1st gear. Because of this the 2nd gear stripped. A few drops of glue solved my problem. This could be your problem.
am glad you got it good,1st symtom it wil giv u when u 1st assemble the 2nd gear housing even without the spur on,you can see it vobles while rotating,apply low impact wit a mallet onto the bearing,then try to rotate again,it should be good,then apply drops of glue.
But if it happens again,that the time you should knock bearing out,clean up the housing and scracth the inner a bit,apply some glue before putting back the bearing..

better check the 1st gear housing too..i found on few friends unit it vobles too..then u know what to do..
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Old 02-14-2006, 01:18 AM   #3384
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Quote:
Originally Posted by mistercrash
Scott,
Did you do some testing on the carbon chassis this weekend?

Thanks
Yes, I did.

Our track had not been run on in about three weeks. It was prepped like a normal test weekend which means I needed to run some soft tires. The first thing that I wanted to do was check and see how the engine temps would be. I was very skeptical about the engine staying cool without that big aluminum heatsink below it. I ran 2-3 laps at a time checking temps and all seemed well. I did this for an entire tank and it everything was good. I then ran about half a tank checking temp, then the second half of the tank and it was still good. I felt confident so I ran almost 20 mins continuous only stopping every 5 mins for fuel and a temp. The engine ran 231 degrees at the end of the 20 mins. No temp problems. I also put the stock chassis back on and the temps were only about 7 degrees cooler.

Handling: The track was loose and many of the cars were having some issues with traction. Basically the two chassis' were similar but I will say with the current track conditions and not changing the setup, both exhibited off power push with on power loose condition. The carbon chassis was worse in both areas, but not much. It might have been psychological, but it did feel like the carbon chassis launched a little bit harder off the corner. The track was loose enough that I had to have a lot of finger discipline or I could easily light up the tires coming out of the corner. I would love to try the car in a higher grip situation but I would also be concerned about the higher cg. I also would say that I did not want to put hours into a setup for this as it seems like I am always prepping for a race that is either roar sanctioned or run under roar rules. The chassis is perfectly legal, but my car is so underweight with that chassis that it would be a waste of my time as I want all the weight on the chassis. I really think for club racing this chassis would be great.

I did have one hard crash that broke a rear arm and the chassis is just fine.
I did my very unscientific test and can say that the carbon chassis is stiffer than the stock aluminum one. There is one thing that scares me about the chassis. It starts at 3mm thick. Where the engine mount screws go through is machined thinner to recess the screws just like it is on the stock chassis. It is really thin there and I would be nervous about a hard crash or some donut running an eighth scale plowing into you and ripping the engine out of the chassis. I don't know if it would ever happen, but it makes me a little nervous. I will do some more testing at our next outing in 2 weeks (if James lets me hang onto the chassis) as I hope the track will be better.
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Old 02-14-2006, 05:10 AM   #3385
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Quote:
Originally Posted by Riketsu
Can you post how much does the amp regulator and battery weigh? I would like to do this, but this only means I need a double Y so I can hookup my PT, Amp Regulator, battery and telemetry system..

the VXR unit weighs 50 gram the standard pack 100. this is with amp reg.

if i don't need the cap, great!! i never knew this. i'll happilly take it out
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Old 02-14-2006, 09:11 AM   #3386
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Excellent report Scott, thank you very much
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Last edited by mistercrash; 02-14-2006 at 09:32 PM.
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Old 02-14-2006, 09:15 AM   #3387
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I weighed my car the other day with all the Option parts from Skyline except for the new 1st gear holder and it came in at 1765 grams.
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Old 02-14-2006, 09:24 AM   #3388
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Quote:
Originally Posted by VenomWorldOrder
the VXR unit weighs 50 gram the standard pack 100. this is with amp reg.

if i don't need the cap, great!! i never knew this. i'll happilly take it out
Venom... where did you buy the battery pack?
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Old 02-14-2006, 01:44 PM   #3389
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Actually removing weight where the battery sits is the worst spot to get rid of weight... Many people add weight below the tank!

I'm going to test a brass battery holder (that thingy which is made out of plastic normally...) with a 1500mAh LiPo pack and an LRP prototype 6V regulator.
This entire combo (brass, LiPo, regulator) does actually weigh 50g more then a normal holder with NiMH pack but I got the weight where I want it, have tremendous capacity and a consistent BEC voltage for long finals. This results in consistent steering and brake since the servo torque/speed is no more dependant to battery voltage.
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Old 02-14-2006, 04:26 PM   #3390
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That seems like a good idea for all you guys that have put the -4 on a diet. Burrito, just remember that you are replacing an insulator with a conductor.
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