markt311

iTrader: (34)

They're in stock at my local track for $30 https://teameamotorsports.com/produc...c0db6b2a&_ss=r

old_dude

iTrader: (1)

I have been involved with some form of racing, full size and R/C since 1971.
There is always drama.
Now we can just type it out for many to see.
Oh and this doesn't just apply to racing.

simple

iTrader: (2)

The challenge then becomes that we have to sift through dozens of pages of complaining, sarcasm, passive aggressive comments, and over generalized subjective opinions - just to find the little nuggets of inspired technical wisdom and techniques that can be directly applied to the class the we have chosen to race in.
I think it could be better.

That being said- I've learned from this thread some different tire prep techniques - as well as little technical considerations I use to take for granted (ex: reduction of rotational mass from tire wear). Every little bit matters in spec classes. Never ceases to amaze me.

old_dude

iTrader: (1)

I know that I make every effort to help people. I hope others do too.
I started this thread for the purpose of separating it from general information and get specific to the tires and the issues they initiate. I want the class to be successful as it is a lot of fun.
It can be challenging at times.

belewis01

iTrader: (5)

New to the class, and 1/12th scale in general. My car weighs 790 grams, aluminum chassis, 8000 mah battery, body is almost 60 grams. All my 1/10 scales I can meet min weights when set up for asphalt - is it the aluminum chassis? Would it be better to run a carbon chassis?

bd007

iTrader: (12)

You mean you are under weight? My a12 total weight 745g. Body itself weight 54g.

belewis01

iTrader: (5)

Sorry - totally bonked that one - I'm at 790 - spec is 730.

GregAnthony

what brand car are you running?

bentouttashape

iTrader: (5)

Post a pic of the car. Let's put it on a diet.

belewis01

iTrader: (5)

LOL - here you go - learn me
It's a Top Racing - some version of the Rebel from about 2015? Team Powers V4 motor, Team Powers ESC, Sanwa RX, JR servo, Sunpadow 8000 mah, Phat Racing type F body, XRay Gear diff and left hub. 7 grams added on the pod to balance left to right. Picture has foam tires on - the set of rubber tires I measured was about 20 grams heavier than foam.

bentouttashape

iTrader: (5)

Bit of a tall order, but we can try:

1. That esc looks beefy as hell. I bet you'd save 10-15g w/a Hobbywing Stock Spec 1s (~25g).
2. I'd be curious what that servo weighs. A Sanwa is 24g. A PowerHD M8 Pro is 28g.
3. Ti screw kit would save you about 10g.
4. FREE: Ditch one of the side tubes. 3-5g.
5. Painted my Mon-Tech Akura is 40g.
6. There's about a 15-18g difference between a new set of SJT's and a worn set.
7. What does that gear diff weigh? Consider a ball diff w/a lightweight shaft.

belewis01

iTrader: (5)

Thanks for the great suggestions
ESC change is not an option at this time - I have obligations. The servo is listed at 29 grams. Ball diff and carbon axle is a good idea which I will look into. A lighter body will come after I get some laps in on this one - new to the class, so expectations are not sky high.

An easy mod for me would be a carbon chassis - I make stuff. Preliminary design work suggests 25 - 30 grams reduction. I don't know if a carbon chassis works for black carpet racing in this class.

bentouttashape

iTrader: (5)

Two of our top cars locally are carbon chassis. I race a carbon chassis in this class.

Robbob

iTrader: (8)

FYI - CF will raise your CG. Youre essentially taking wait off from under the equipment that doesnt change.
I would try other things first with parts and hardware before just dumping the chassis.

GregAnthony

lighter front bumper, all aluminum screws, a 7400/7500 battery, and get rid of the heavy xray diff and you'll be under weight...