droopy316

Where do you senior members and frequent forum flyers find info about a cars speed
say i have a nitro rs4 mt w/2 speed, how fast does it go?
if you answer......whered you get that info??????

MeneR

usully you can find out on the manufactuers web site.

packfan88

My Feedback: (2)

yeah thats the best way to find out stock speeds.

once you do all your upgrades you either
A- find a nice police officer witha radar gun
or ive heard someone using a pitching radar
b- do lots of math
taking into account distance/rpms/gearing/etc

id say hang out near the local dunkin donuts and when some fuzz pulls up fire the thing up and i sure they will inquire about it and you can ask them to clock it.

soapsuds43

youll need this for the formula...

primary ratio= SPUR GEAR divided by CLUTCH BELL

drive ratio= LARGE PULLY/GEAR- divided by- SMALL PULLY/GEAR
then.... finial drive ratio= PRIMARY RATIO -divided by- DRIVE TRAIN RATIO
...remember your finial drive ratio....

ESTIMATED TOP SPEED= ENGINE RPM- divide by -FININAL DRIVE RATIO- multiplyed by -TIRE DIAMATER- divided by- 336.135

USE MAX ENGINE RPM so you know what it would be at full throttle

ENJOI hope it goes FFFAAASSSTTT!!!

soapsuds43

.......im not a wiz kid i got it out of the april 2002 RC NITRO! mag

KyleSch

You car prob goes like 38, but its just a guess.

soapsuds43

ya stock the SS proabibly goes about 35-38 i know the stock RS4 goes 32 and i think the SS has the 2 speed tranny and the RS4's dont

WhiskyVR-4

According the the April 2003 issue of RC Nitro, the SS in stock form topped-out at 46.2 mph. They also said that this was about 15mph faster than the rtr (non 2-speed, not SS engine), which would put it at about 30 for the rtr. Thats a huge difference. Of course, I would be shocked if my SS actually clocked 45+... If I'm doing 45, then my cousin's NTC3 is damn near 60mph, as he just cruises right away from me the whole way, but especially on top. Of course, he is running a Picco .15 racing engine, so thats not an entirely fair race.

KyleSch

The RTR 3 was clocked at 36mph, not quite as slow as you say

WhiskyVR-4

Ok, so 36mph, its all the same to me, I bought the Type SS I was just quoting what the magazine said.

I have no idea how fast the RTR is, I've never seen one run. I have no idea how fast my SS is either, for that matter! I learned not to judge by "well it looks like about XXmph to me" because you are nearly always wrong. I'm not terribly worried about top speed, to be honest. I'm far more interested in throttle response, braking, steering, and other things that are actually helpful on the track. Top speed is really just for going "hey! look how fast this thing is!" which is fun, but isn't going to make me any faster around a touring course. Ok, I do have to admit, one of these days I would like to smoke that NTC3, but until I buy a $300 engine, thats probably not going to happen.

KyleSch

Yeah, I wasn't correcting you or anything, just stating it

I got a type SS too (only because it was a kit really) except it never really went past 43 or so (I don't think) and then I stripped the cooling head where the glow-plug goes in so I was without RC for a few weeks then I got a fantom which hasn't been runnin to great either Although I think I have found the problem. If you wanna annoy your friend the picco .15 isn't that expensive just 160 dollars. I think a 'working' fantom could actually beat a picco, but I haven't seen a picco run so I'm not sure about that.

WhiskyVR-4

yeah, I think he paid even less than that. I've seen many a .15 "racing" engine, and his just flat HAULS. I'm not sure what the deal is with his engine, but its incredibly fast, and it runs around 220 F. Besides, I would buy a Novarossi just to be sure that I can smoke him, heh.

KyleSch

Yeah, that would beat him

WhiskyVR-4

yeah, its almost not fair. See, I can afford a Novarossi, he can't, so he can't afford to play this game, muahahahaha!

hoodiegadoo

(100 feet/ time) x .68 = speed in mph

dg2b

Radar gun is good. Speed trap is cheaper. I use a lap counter to get the end points of a known length, then use the the formula.

soapsuds43

ya thats the simple equation....

but you need 100ft of smooth land

buyrbware

My Feedback: (2)

Well I tried that Dunkin Dounuts thing, Found two cop cars four cops.....Pulled up i didn't say a word. Got out of my car and pulled My rc-10 out of the trunk. Barney Fife walks over and ask me "what are you planning to do with that" I told him "Actually I saw you guys hanging out in front of this donut establishment and was wondering if one of you fine officers would clock my car."

I said "I'll even throw in a couple of Big Bear Claws for your trouble." So we sat around and B.S.'d awhile but I could not get one of them to do it! Maybe they were worried that someone might see them...I don't know anyway the Cop trick didn't work and the Bribe with the Donuts was wrong cause they get them for free anyhow!
Course they were city cops, maybe I need to find acounty sherriff!

Tom

WhiskyVR-4

what equipment do you need for lap counting?

what does it cost?

where do you get it?

soapsuds43

orion makes a lap counter system that counts laps keeps times and finds average speed just like at the local race track when they give you transponders but its proly alota $$$$

dg2b

I have two systems. One is the orion and an older system called lapboy made by Kyosho. The nice thing about the Kyosho is that it comes with a printer and its all operates on a 9V battery.

The nice thing about having your own lap counter is that you don't have to go to the track. You can setup a speed trap in a basketball court and use it to acquire your time.

I use when adjusting my centax clutch at the park or when dialing my setup at the track.

WhiskyVR-4

how much did you spend on these systems, if you don't mind my asking...

dg2b

The orion goes for about $120 used. The lapboy sold for higher $$ back then but sometimes you can find one at around $65. Interested in the lapboy?

WhiskyVR-4

hmmm, damn. I'm stupid as hell, thank god I'm not married or I would really be in some trouble. More things to spend money on...

Yeah, I might be. I found a few links mentioning a price of about $40. Does that mean though, that each car much have one of these, and that I need to put a 9V on board the car?

what does the orion do that the lapboy doesn't?

dg2b

I can do better than $40. PM or email me for additional question. [email protected]

Yes, each car must have a unit. Not intended for racing.

Here are (from memory) the differences:
Orion
- 60 laps memory
- can buy additional transponder
- can buy tripod for the receiving unit
- can buy PC link to store lap times
- transponder plugs into receiver or through y-harness
- newer technology

Lapboy
- 20 laps (I believe)
- uses 9V battery in the car
- comes with a printer. uses printing calculator paper found at any office supply (i.e. office depot)
- older technology than Orion