whats a good engine?

[Hypedonrc]

Thanks for the midrange explaination CorradoPsi. It makes sence the way you explained it. Never had to mess with mine. Must have gotten lucky on where it was set from the factory I guess.

 

[mikeburgin]

i would think he has changed the rod though. :idea:

Nope nothings been changed but like i have said they are pretty worn now the main killer of rods is cold cranking and leaving fuel in the motor after it been run (causes oxidatition) so put fuel in the carb and through the glow plug and turning over on your starter for 30 odd seconds to warm up a little prior to starting gives the bore plenty of lube. and running your motor completely dry and adding after run oil after running does a huge amount to keep them in good nick, store your motor so its facing exhaust port down that way any residual fuel in the motor wont sit in the bottom of the bearing cases and corode your bottom balls, theres a name for that just can't remember it, remember that the rod and bearings are the most effected by corosion so they are what will give in first if you dont look after your motor, cold cranking wares your pins and bushes very prematurely.

 

[CorradoPsi]

mike, if no body else will belive you, i will. just so i can be different though :hi:

 

[mikeburgin]

LOL I'm glad someone is mock ing me at least!!!!!!! I've just put 10 ltrs in 2 days through my new novarosi and the damn thing still pinches at the top of the bore, damn thing is starting to cause me a few problems, not the easiest thing on the planet to get the low end tuned right on, would think it would be the same as the rb considering there pretty much the same motor, OH YEAH and you can mock me all you like, cause i know and other guys over here know that I'm not full of it the rb does and has gone for 20 gallons, oh and its going to do the northland champs this weekend as well, and if this damn nova doesn't start behaving itself it might have to do the NATS this year again.
Like I said if you guys are blowing motors up after 2 Gallons then there either poop motors or your over tuning them...........
Maybe the few of them that run over here were Special motors designed not to blow up or maybe just maybe I'm right and certain people should try not to think they no everything, an average motor you should get 50ltrs out of before you start to notice that its slowing, and i dont mean stay in new condition i mean stays good compression and power, mine is definatley down on a new motor now but on off road a pile of crap motor can beat a good one if the driver of the good one sux

Thanks MIKE

 

[CorradoPsi]

mike actually with the way you describe the way you guys run, i do belive you. over here we start and stop the motors a lot. its the cold starts that cause a lot of wear and pinch loss because the brass hasnt expanded yet as the piston slam into the pinch area. if you keep the motor hot like your describing, and run over a gallon through it every time you start it, i really dont see any reason why you can't get extrordinary life out of it. this comes from a machining background with some metalurgy thrown in there and 1:1 scale engines on boost and nitrous, so id hope i know something about making things fast and lasting. and if you take care of and run all your motors the same way id imagine you would get good life out of the OS's too.

 

[1meathead]

But 20 gal. I think not! I can get 6-8 and thats it for me. Must not lnow how to tune? Maybe I need to have it spew oil out and have no power? I know for a fact that my MAC needs to and works best at about 230-240deg. Just ask the owner of the company CMDI. Well if I want it at that temp then no way will it have a great amount of oil comming out. Yes if you want to run it like a 4 stroke sure you will get more time on it but what good is that?

 

[CorradoPsi]

i think you missed my point. when you start your engine, do you keep refilling the tank and not let it stop running till you have 1 gallon through it? ill admit 20 gallons is way up there, but i wont rule it out of the relm of possibility.

 

[1meathead]

WOW if thats how it works! You know how long they would drive to use a gal. all on one start? That would be a long day of R/C! Hell even on a rich setting it would still be a long time to hold the radio and drive.

 

[mikeburgin]

110 ml last 6minutes 1 hr = 1ltr it either 3.48 ltrs to a gallon or 4.45 when you got to drive 3 hrs to a track you dont stay there for 5 minutes and if you do you aint an eager driver, and yes your right we do keep filling, drive for about and hour then have a ciggy and a drink, then right back at it, the break is more for batteries than us, and no we dont have oil pooring out the pipes i buy my fuel in 20ltr amounts and normally get about 3-4 .lots of fuel to a motor 60-80ltrs we tune our motors to about 90% of there full capabilities the xtra 10% is all noise and a lot of wear. just because you have never had a motor last that long doesn't mean others havent, oh and obviously you do overtune to only get 6-9 gallons out of your motors, and my temps are in cent not F I'm not a yank I'm a kiwi so please dont get confused (lol no accent), try listening to someone that knows what hes talking about CORRADOPSI hes even trying to tell you that its possible, and like i said I have had a good run out of 3 of these motors its not just a one off fluke,
when i tune i tune to peak then back off quarter of a turn, i dont hold my car wide open for prolonged periods and i blip from full to none so the motor is always running full fuel flow.
Thank you for your support Corradopsi its nice to know that not everyone is so close minded

heres the collari website www.lcollari-innotech.com/english/global.htm they have a cheapy and an exspensivey, which version do you have of the rb cause the collari isnt even close to rb ws7 and they dont last as long either, over here you can get the collari for about $350 NZD and the ws7 is about $750 depending on exchange rates at the time.......

 

[1meathead]

Hey so you drive your R/C like 3-4 hours straight! Thats crazy and cool. I would like to be half as good as you at engine tunning. Maybe us Yanks don't know a thing about engines and we need you to come show us.

 

[CorradoPsi]

no, we know quite a bit about it. its just that nobody here i know of runs for that long straight through. thats the variable in the equation and i belive the reason for his long life motors.

 

[1meathead]

Ok I will let this go. I have never run like that so maybe it would work. But one last thing the racing we do is like 7 minn. heats and 30min main. How do you guys do it? hour qual. and 2 hour mains? That would make the race day last too long for me if you have lets say 5 groups of qual thats 5 hours for one heat each and 10hours for the mains! I just don't see how this would work other than bashing. Thats it from me but let me know about that interested to see how others race.

 

[mikeburgin]

Ok I will let this go. I have never run like that so maybe it would work. But one last thing the racing we do is like 7 minn. heats and 30min main. How do you guys do it? hour qual. and 2 hour mains? That would make the race day last too long for me if you have lets say 5 groups of qual thats 5 hours for one heat each and 10hours for the mains! I just don't see how this would work other than bashing. Thats it from me but let me know about that interested to see how others race.

Nope simililar to yours, 5 min heats and 40 min mains but we dont race as much as you, I'm member of 2 clubs that hold meetings once a month at least everysecond one seems to get rained off, but i would practice alot more than actual racing, after all practice makes you fast, fast lines and better control, I'm not worried about wearing my motors cause its not really an issue to buy a new motor, for the price of rebuilding over here you might as well just throw it away and buy a new one, I've just run in my new 421b nova in last 2 days and have alredy put close to 10 ltrs through it, bloody thing was that tight you didnt want it to stop cause it was a pig to start(damn starter box could hardly turn it over) here hoping i get the same sort of wear out of this motor.

 

[SkyMaxx]

LOL...I'm liking this Kiwi. He is not blowing smoke, and anyone with the better part of a clue would read his posts carefully and see that what he is saying is not only possible, but very highly likely. I for one would love to be able to run for an hour or more on one start. The longest run I had was about 45 minutes. Didn't make it longer because I waited too long on the last re-fill....stalled the sucker out.

If you keep your fuel bottle close at hand (the small refilling one), and pour more fuel in prior to stalling out or bottoming out the fuel tank you can easily run for great lengths of time. If tuned properly, you can go for a bit more than 6 minutes on a tank and can have quite a bit of fun.

Is 20 gallons unheard of? Perhaps in your part of the States, but not around here. I'd say "unless you can prove otherwise" do not knock his story.

Mike, if I could get to New Zealand...I'd love to run with you and your crew. Unfortunately, this Yank is half a world away with little hope of getting anywhere near the Land Down Under or the beautiful Island you call home.

Keep the stories coming, and perhaps a Yank or two might learn something about endurance racing and running...

 

[mikeburgin]

Thanks SKYMAXX who know i might make it over there for an internetional one day

 

[SkyMaxx]

That would be sweet. If you are ever near the East Coast of the States (specifically in the area of Virginia Beach, Virginia) drop me an e-mail or let me know via this site. Would definitely love to run a gallon or two with ya.

 

[1meathead]

LOL...I'm liking this Kiwi. He is not blowing smoke, and anyone with the better part of a clue would read his posts carefully and see that what he is saying is not only possible, but very highly likely. I for one would love to be able to run for an hour or more on one start. The longest run I had was about 45 minutes. Didn't make it longer because I waited too long on the last re-fill....stalled the sucker out.

If you keep your fuel bottle close at hand (the small refilling one), and pour more fuel in prior to stalling out or bottoming out the fuel tank you can easily run for great lengths of time. If tuned properly, you can go for a bit more than 6 minutes on a tank and can have quite a bit of fun.

Is 20 gallons unheard of? Perhaps in your part of the States, but not around here. I'd say "unless you can prove otherwise" do not knock his story.

Mike, if I could get to New Zealand...I'd love to run with you and your crew. Unfortunately, this Yank is half a world away with little hope of getting anywhere near the Land Down Under or the beautiful Island you call home.

Keep the stories coming, and perhaps a Yank or two might learn something about endurance racing and running...

I am not trying to put him down. I think its cool he runs that long. I have no problem keeping my engine running for more than an hour other than I can't drive it much more than that personally. I have many friends who race down your way and none of them get 20gal. out of an engine. I also know many up north of you who can't and a ton out west that don't. Now I don't think some guy has never done it but like I said tune for a race and you will NEVER get 20 out of it! Maybe if we all ran at half the engines full possibilities. But it racing and you try to get the most out of it that you can because that’s the only way to keep up with the faster guys. You want me to prove it but you don't I said before go to S-Grid and you can see for yourself how many gals. People are getting and get on the MAC CMDI thread on S-Grid and talk to the guy who makes the engines and see what he will tell you about it. Oh and he is down your way FL.

 

[mikeburgin]

meathead! Make NO mistake we are not running our motors at half there potential, more like about 90% of there potential and like i said in an earlier post (mmmmmmmm this beer is great) ooops sorry side tracked there a bit must be getting bored, like i said earlier the last 10% is all noise and wear an actually gives you f all extra speed and the speed it does give you, well i bet ill pass you in the next tight coner after you wrapped you pretty car around a post cause what goes up must come down !!!!!!!! the difference in speed is sweet FA but the ammount of wear is huge, anyone that knows anything about motors will have to agree, oh did I forget to mention that I have a seperate motor for actual race day, when i buy a motor i dont normally buy one, and that race motor is tuned pretty hot, a little to hot at times, and well i have had to repair liner piston rod and bearings a couple of times in that, but then i learnt about tunning and reallised that that 10% aint worth $750.00 NZD and reliability to fininsh a 40 minute main when your running not quite so hot, put it this ways I have never not finished a race due to engine failure or flame out since i adopted this attitude, car parts on the other habd have denied me a few victories

By the way anyone thats interested I have put 13ltrs through my nova421B What a beast ,that thing has a whole ton of torque down low, and top end aint for off the RB either, but will it last, seems to be rather well run in now so can start really punching it, oh and meathead i did this in 2 days not to mention some high % oil run in fuel on the bench at idol for 3 tanks (now that was painfull) but essential. If you want a motor that really lasts buy and FG 1/6 scalle Marder I used to own one till recently, they Kinda Died over here, but meat head believe it or not i got 200+ ltrs out of that motor))))))))))))
Just a wind up mate dont send the army.

 

[SkyMaxx]

I am not trying to put him down. I think its cool he runs that long. I have no problem keeping my engine running for more than an hour other than I can't drive it much more than that personally. I have many friends who race down your way and none of them get 20gal. out of an engine. I also know many up north of you who can't and a ton out west that don't. Now I don't think some guy has never done it but like I said tune for a race and you will NEVER get 20 out of it! Maybe if we all ran at half the engines full possibilities. But it racing and you try to get the most out of it that you can because that’s the only way to keep up with the faster guys. You want me to prove it but you don't I said before go to S-Grid and you can see for yourself how many gals. People are getting and get on the MAC CMDI thread on S-Grid and talk to the guy who makes the engines and see what he will tell you about it. Oh and he is down your way FL.

LOL...it is very funny how this seems to be an issue with people. A properly tuned engine that is kept running for a gallon at a time, can easily get into the 20+ gallons worth of usage range. Far be it from me to disagree with someone who has practical experience in wasting an engine in less. Most racers that I have heard of tune their engines for one maybe two races, and then they chuck them and go with another newly broken in engine. That is just the way some racers are. Does that mean their throw away engines do not have life left in them? Not as far as I know. They might not be in the new condition that most racers want, but they can still run and kick out power. Will a highly tuned engine set up to maximize the performance of the engine last for 20 gallons? Not likely. They suffer from heat fatique much more quickly and wear out.

Regardless it certainly seems like this discussion is about what can and can not be done. And there certainly seems to be a lot of comparing apples to oranges going on. While Mike has stated that he races, he also stated that his engines are tuned to less than the 100% performance or higher that many racers attempt. He has also stated that he prefers to run on tracks for "practice" and lots of it...rather than actually all out racing. Perhaps he is simply taking better care of his engines and trying to gain the longest runs he can vice trying to win the race and kill his engine.

Either way, his claims are not beyond the realm of possibility and are easily supported by science. As for FL being down my way, I'll take it that you are located at the North Pole as the relative distance would make FL close to VA, but in my book VA is a few states away and easily a day drive one way. Kind of puts this argument into perspective ...