ailionvspredator

blahblah

hpi apollo

obviously you have no idea what you are talking about, the engine itself doesnt go x mph, gearing effects that, they arent known for being that good, but they will do fine for noob driving

ailionvspredator

so... like for ex. some engines can reach to 70 mph.. what is NITRO STAR T-15 ENGINE top speed??

sfar785

Don't they come stock on the Super Nitro RS4? If so, i think my SN RS4 did about 45mph when i first got it...

Rs43EVOman

There is no way you could ever say an engines top-speed. Its just simply incorrect, theres literally infinate different gearings your car could have all leading to a different topspeed. As far as the T-15 goes, its a good realible, inexpensive motor. If your looking for a motor cheap, then the T-15 or an OS .12 CV-R's are good engines, but i just checked and according to tower hobbies their discontinued, but if you can find one there good engines as well. They replaced the CV-R with a TG, which i can reccoemnd becuase ive got no expoerience with, but ask around and see if there any good. im a bit skeptical about their ABL lining, I've yet to hear as good thing about it.

hpi apollo

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as i originally said, gearing determines speed, if you cant understand that then you really dont need to be involved in RC

sfar785

that was harsh [X(]

nitro stan

harsh but true RPM and gearing = speed

hpi apollo

just sayin the truth, if the truth is harsh to someone thne thats not my problem, as everyone will say, gearing effects speed

magnus213

For the price I thought the T-15 was pretty commendable.

ailionvspredator

if that is the speed, what is it then... that's what i want.. wow it's really out of topic now... i just want the correct anwers..

hpi apollo

the correct answer is that the T-15 is not promising a certain speed, if you have a really powerful engine and really low gearing its gunna so really slow, if you have a weak engine and you have it geared for 100mph then its gunna be very slow

ailionvspredator

u know this engine has 1.2 hp right?? do you think this engine is above than normal ?? my question is, is this engine considered as powerfull , somewhat powerfull or medium?

magnus213

RPM is revolutions per minute, a measure of frequency and therefore an indication of how quickly the crankshaft of the motor is turning. Higher RPMs = faster the motor is spinning, that's obvious. All other parts of the car's driveline constant, the more RPMs a motor produces, the higher the top speed. Faster speed "in" (motor) equals faster rotating speed "out" (wheels, and thus whole car).

Gearing is also a huge player in your car's acceleration and speed characteristics. Adjusting the ratio between the motor shaft (pinion gears mount there) and the whole driveline (spur gears) can cause your car to be a very quick off-the-line champ or a top speed master, but not both. I'm not the best with that whole thing, but search "gear ratios" and you should find someone who knows what I don't.

There are other factors that affect your car's speed (such as body aerodynamics) but RPM and gearing are very important characteristics. That's why everyone here is correctly stating that the motor alone does not have one predetermined top speed. Due to gearing, in theory a T-15 could be setup to hit some ridiculous high speed, but it would take forever to reach it.

MiamizFinest

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U know what HPI apollo you are sersously the rudest person here on RCU......instead explaining into more detail u just brush him off like that........

this is why no one on this forum respects you

Rs43EVOman

i DEF agree. I tired to explain it to him, youjust told him to shut up, you make it seem like inexpeierenced epope shouldnt be allowed to ask an incorrect question. Anyone is allowed to ask a question, and if they happen to be wrong in their thinking, then thats what these forums are for to help them out.

hpi apollo

if being truthful is rude then im a very rude person, i did explain the gearing thing if you scroll up, you all are getting upset because i didnt explain something fully, thats stupid, i said if you cant understand that gearing effects top speed thne you dont need to be in RC, i said basically the same thing that rs43evoman did, even nitro stan said it was true and you arent jumping all over him

IAMKAOS

i own a rs4 evo with the nitro star t-15 motor. it is no powerhouse. top speed of my evo is about 40 to 45 mph with the stock gearing . they are a inexpensive engine made for hpi rtr cars and trucks. several months ago tower hobbies was selling them for $69.00. now i believe they do not even sell them. the original t-15 that came on my evo new crapped out shortly after break in. hpi sent me a replacement engine due to a manufacturing defect in the 1st one. the new evo's come with .18 engine. i saw one run and it is quite a bit faster than the t-15 evo. for parking lot or street bashing the t-15 would be alright but your not going the fastest car out there.

Fasterthanspeed

Calm down miami. Hes been trying to help him and he obviously wont listen.

IAMKAOS

i am not miamiizfinest

hpi apollo

he wasnt referring to you

Fasterthanspeed

I was referring to miamizfinest. lol.

Saboteur10573

For the record this engine makes no where near 1.2HP and is just average. It's only so much faster than the older Nitro FE motor. You're better off spending money on the OS .12TG or OS .18cvrx which can both be found under $170. Both motors will be a lot more powerful, the .18especially than that HPI .15.

ahfu25

Dido on that one!! Your always telling someone how if "they don't know this or that they should'nt be involved in rc" who are you to tell someone not to play with expensive toys. thats what it really is, you act like you were born with everything you know about "RC". If you don't have the answer dont post when someone is asking a question you think is stupid or dont answer him with an answer thats gonna make him ask another question. Be easy on noobs bro you were one too!!

hpi apollo

im missing something, when did i not give an answer...we have clearly established that gearing determines the speed, now what more is there to say, just leave it at that