RCU Forums - ENGINE??

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I know there have been a bunch of posts, about this but none have been in the prce range im talking about, most are lower in the RG price range. Im looking for a engine under $250. Right now im preatty convinced on the Rb concpet S7 to be the best engine i can get for that money. I know this engine produces great power, so iw anna know from the people who own these engines, honest opinions about their eas of tune, and how they last if taken care of, i want an engine that holds its tune, and will lasy me a long time. If the Rb concpet S7 isnt that then ill get somthing else.

hey bro. the s7 is great. but if you want something insane try the Novarossi s821b. its only $260USD. best engine i owned so far (including WS7)

i dont own an s7 but i do own an RB C5 and an RB C6, they all use the same carb. so i can tell you for sure that they are easy to tune and hold a tune well. my c6 is barely broken in with only about 8 tanks thru it. the c5 i bought used, the previous owner had put 5 gallons thru it and i have ran it another 4 gallons. it still has good compresion and runs like a scalded dog. IMO RB engines are the stuff and i would never hesitate to recomend them or to buy another one for myself.

Im gonna wait for some more responses abouit the life length of the S7 but im probably gonna get it. As far as the novarossi s821b, i dont know where you got it for$260, but thats an incredible deal. Also RIght now i have a Jp-1 TUned pipe, and is that the ideal pipe for the S7 or would a JP-2, or a JP-3 work better?

I cant dal with Ebay, im probably gonna go with the S7 once i hear about its life lenght, and also an answere to the question about exhust pipes.

anybody experience the latest RB S3 3 port or STS D21E 3 port

what will happen if i put a 5 port piston/linear on a 3 port engine.. and what what will happen if i put a 3 port piston/linear on a 5 port engine... can it increase or decrease their performance..??

does a 3 or 5 port engine have different shape inside the engine case..

The S7 is a pretty nice engine. Although I usually ran Worlds when I was running the RBs, I do have a lot of experience with the S7. The life on them is pretty good, if you treat it right. The one we've been running has about 7 gallons on it and we haven't done anything to it. As a test, we've been running this one on Blue Thunder. We ran the last one on 30% White Lightning and although we got good power, the bearings went out on the 5th gallon of fuel. I don't know if it was just its time or if the fuel had something to do with it.

Anyway, the S7 is a good budget engine. It does't have much bottom, relatively speaking. I can tune an RG to deliver more bottom than the S7 has, without killing the RG. The S7 doesn't have as much top end as I like either. My stock P5X will out run the S7 we've been running.

If all you are worried about is the life of the engine and better than fair performance, the S7 may just be what you're looking for. It's a good medium track engine. If you are running a tight track, I think I'd suggest the S5. It has a better bottom, at the expense of a bit of the top end.

I hope I'm not sounding as though I'm knocking the S7, because I'm not. It is a good engine that performs reasonably well. I think that the best way to characterize the S7 is to say that it is smooth. I find it really hard to get myself into trouble when driving an S7.

The greatest problem with choosing an engine according to price is that there seems to be a gap between the $110 RGs and Thunder Tigers and the $300 RB Worlds and P5Xs. There is very little in between. Off of the top of my head, the RBs would come first, then I'd have to mention the Sportwerks .21. Its a good engine that can be had for about $180. It too is reasonably fast and should last you at least five gallons. The SHs seem to be pretty good performers, but I can't speak as to the longevity of the engine life. There are also the STS engines. They are low priced and fair performers. In fact, I raced against two of them the weekend before last. They were the ones with the green heads. Maybe the team engines. They ran OK, but again, I can't comment about engine life.

As a final note, I want to say that I love RC. I go through about two gallons of White Lightning 30% a week. I've gone through about 13 engines in the last seven months. Actually, I haven't gone through all of them. Some are still running good, but I have killed about half of them. A couple of them were Novarossis, a couple were RBs, a pair of O.S. VG30s, a Hyper 21, and a couple of others. The life that you get out of the engine depends on how you run them. With the engines that I relegate to race duty, meaning that I only race them, have lasted a LONG time. This is because they only have to run the qualifiers and actual races and have time to cool after about 15 minutes of running. The engines that I practice with get run hard. Most times they only get breaks long enough to allow me time to change a battery or air filter. I put a half a gallon through a P5X this past Sunday without giving the engine a real break. Engines that get treated like this usually don't last long. Although they usually have compression, the bearings usually go out. Probably from all of the heat for prolonged periods of time. I've had conrods eat though crankshafts and all sorts of stuff go wrong.

I don't want to blow my own horn, but I can afford to buy a new P5X or Worlds every couple to a few weeks and it's what I've been doing. My motto is drive it like you stole it. It's what makes it fun. Some of the guys that I run with don't have the resources that I have and have asked me the same question being asked here. They are looking for a good engine that will perform well and last them a long time. My answer to all of them is the same. First, there is never a guarantee as to how long an engine will last. For the most part, any engine will last longer if you baby it, but what's the fun in that. Second, how well an engine runs depends greatly on your ability to tune. You'd be surprised at what a cheapie RG that is tuned well can do. The last thing that I tell them is that this is a hobby that's supposed to be fun. Having to worry about your engine and babying it, isn't fun. Also, having a running RG or Thunder Tiger Pro .21 is more fun than having a blown Novarossi or RB. Personally, if I were on a budget, for the price of the S7, I'd just buy two RGs or Thunder Tiger Pros. This way you can run it like you stole it and not have to worry about it. If you blow one up, stick the other in and keep running.

OK, I know I'm rambling. I don't know what got into me. On a last note, I've found the RBs to be a bit pipe sensitive. Since you are on a budget, this could be a drawback. I run my S7s and Worlds with an Ofna 086. They can be had for relatively low prices allowing for a backup. I don't know how, but my pipe always manages to get destroyed. No holds barred money races can get nasty. Some will tell you that you should put a low end pipe on the S7 to get more bottom out of it. I don't want to argue the logic behind this reasoning, but I've found that engines (especially the RBs) just seem to like some pipes more than others. I've found that is it usually better to cater to an engines strong suit rather than try to turn it into something that it isn't. The RB S7 is, I believe, an engine that can be categorized as a mid to top end engine. As such, it likes to breathe and top end pipes allow it to do this. Many also recommend 1.1 springs with aluminum clutch shoes to get more bottom. I've found that 1.1 springs are too heavy and make the buggy twitchy on tighter tracks. The aluminum clutch shoes only serve to keep things hot and destroy clutch bells. I'd recommend Mugen 1.0 springs and black shoes. They last a long time and aren't expensive. If you want a bit more of a delay before the shoes grab, just put them in backwards and try that out.

My point in all of this is that the RC hobby is a money pit. Stick with what you can afford to replace if you have to. A rebuild kit for an S7 costs more than an RG or Thunder Tiger. A friend of mine just got a Thunder Tiger in and it's a real screamer. A breeze to break in too. We're going to race it this weekend after I get some time to tune it. If it runs like I think I can get it to, I'm going to buy two or three of them instead of another P5X to use for practice.

Well said aangelet (about running stuff you can afford and having fun).

If I had to pay $300 for a mill I would be scared to run it hard. Instead I'm now running the TTR PRO and it is a very good performer. I think I cooked it at the last race and it's not much to cry over (pressure line came off). Cheap parts and cheap to replace ---> more fun.

I just happen to have a new C6BB waiting to be installed. I won it so I didn't pay $360 for it. If I did.... I'd be more careful and having less fun because of it.

Hence why I have become a fan of the Hyper .21 8 port. Its totally under rated and with 30% nitro and a great pipe and good clutch setup - it will run with $300 engines all day ... and keep you very very competitive - and when you grenade it .... $50 from ofna for a new piston sleeve conrod and g clips - and they will re-build it for you. New engine Cases with bearings are $15 on ebay ... cranks are another $15-20.

You have to know how to run a 3 needle carb and set deck height with shims - but - they haul serious arse and are often over looked by folks noit interested in making stuff tuned.

I used to be like aaanglet - in the sense I could afford ANY rc toy I wanted - not so much anymore - ive run em all or been with the guys that do .... I currently have running or at the ready ...

1 - Picco P3 .28 w/ JP3 pipe - Tazer PRT truggy
2 - Picco .27's - in my DUH titanium twin titan
1 - RB Mods Picco .27 with PCR 2027 EFRA 3 champer pipe
1 - RB Mods Picco .26
1 - Picco 01 Comp w/ picco P7R Evo Crank JP2 Pipe - Hyper 8
1 - Picco .26 w/ JP2 [sons Tazer ST truggy]
1 - Hyper .21 8 port w/ PCR2027 pipe - Hyper 7
1 - Hyper .21 8 Port JP2 pipe - spare :-)

+ endless blocks / bearings / cranks / carbs ready to swap ....

Point is I could chill out on the number of engines and have gotten 3 more spendy ones at any time - but Im running Hyper .21 8 ports in the bugz. Why - they are stupid cheap and just plain haul but! The P5x is a great engine - but i dont feel it has a dang thing over a well setup and tuned little throw away parts engine - hyper .21 8 port. Correct plug fuel shims tune pipe and clutch - it'll git r done.

great info fellas!
just wonderin: what would be the best pipe for the ttr engine?

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ORIGINAL: franchise

great info fellas!
just wonderin: what would be the best pipe for the ttr engine?

I have only tried the OS T-2050 so far and it works very good. Next time I'm going to run a JP-2.

So i should get the S7?

s7 or s5 sounds like its in the price range for you.

i never like the power band of them though.

i like vspec or the 821b for $250 price range

Ive heard that the VZ-B V Sped is hit or miss. Some people get a good life out of them and alot of others have problems after only 3 gallons, im gonna stay away from that engine. Also my old engine was a Novarossi N21B, and i wanna know how would a S5 compare to that, becuase im trying to save money here, but i want an engine faster then the N21B.

i have a n21b. its pretty fast. and great value for money.

i would say the s5 would be a tad faster on the top end than the n21b. but less on bottom. the n21b has great bottom.

So if i got the S7 what's a good pipe for me to get?

9886 or 9863 both work

a bit chepaer is the Jammin JP2

Thats, good becuase i alreayd have a JP-2.

What % nitro should i run with the S7?

If you go with the S7, I'd recommend whatever pipe it is that RB says to go with.

Oh, and I should have mentioned the Hyper 21 as well. The reason that I didn't is that I usually have trouble with the carbs on those. What I do is to put an O.S. RG carb on it and all of the tuning woes go away. These engines run really well. The only other problem with these engines for me is that they come with pull starters and I prefer to use a starter box. On the other hand, you can get the ho bao (I think) branded engines and they are available without the pull starter. They are pretty darned fast, but for some reason I just don't see too many of them, so I just don't think about them much.

They reccomend using the 063 pipe. Are the RN 063 And the OFNA 063 basically the same thing? becuase the OFNas one is alot cheeper, and the reason RB reccomended there own pipe is so they can make more money. Thats a bottom end pipe, and iv heard form some that they work wel with top-end pipes. What should i listen too? I wanna hear from people who actually own the engine. Its generally classified as a mid- Top end engine, so running it on a Low-end pipe like the 063 would make sense, but i wanna be sure before i sepnd my money., or should i get the 053 to help out botrh the bottom and the mid range?

Tony A. is a freak of nature..... always has tons of motor but can't drive to save his life!!:D:D:D

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ORIGINAL: arghh

anybody experience the latest RB S3 3 port or STS D21E 3 port

what will happen if i put a 5 port piston/linear on a 3 port engine.. and what what will happen if i put a 3 port piston/linear on a 5 port engine... can it increase or decrease their performance..??

does a 3 or 5 port engine have different shape inside the engine case.. [:o]:(

hi all 3port/5port/7port piston/sleeves are interchangable between the cases. the cases are the "same" with timing differences.