RE: OS Vspec question.....here we go again
 

Yes, I now go by one name on the tinternet to make it easier to log into all my sites.

The explination of why I do LSN first is stated in the other thread and I'm not going to labour it here.

RE: OS Vspec question.....here we go again
 

probably easier than being told how wrong it is again ;) :D

RE: OS Vspec question.....here we go again
 

Just to share...
Older v-spec main bearing are 10 balls and the newer batch comes with 9 balls which is suppose to last longer.
I don't know when the change was made but I suppose lesser but bigger balls will last longer.
Go to amains ,look at the vspecs mainbearing photo and count the balls, I counted 10, now, again at amains, go to
RB page and look at the C5 bearings, which is the same size, count the balls in the bearing, I counted 9.

I was told that, you can actually see the diffrence between new and old by looking at the heatsink, will check it out and fill you guys up when I ask my pal again, didn't remember it as I wasn't interested in the vspecs at that time.:D

RE: OS Vspec question.....here we go again
 

[link=http://www.rcuniverse.com/forum/fb.asp?m=3708797&key=tuning]Oh Adam, it aint wrong, it's different. And it's easier to get it right too.[/link]

RE: OS Vspec question.....here we go again
 

I've read the break in procedure as well and disagree with it just like everyone else. But in saying that if "da smak" continues to get 10+ gallons out of v-specs and the rest of us don't i reckon alot of people will try it. me included.

I also think that da smak may have tuned a few engines in his time and that is probably why he can tune the lsn first, cause he knows where it needs to be. But i wouldn't tell a newbie to do it that way.

RE: OS Vspec question.....here we go again
 

If you mean the older and newer v-spec then it's obvious that they differ mainly by just looking the head since one it's blue and the other is black with red writing.

As for the balls in the bearing it's not increasing by the number of balls.
There is a fixed size of the bearing but the number of balls may be different(some less -some more) depending on how close the balls are to each other.
I suppose more balls means better bearing since there are more of them to take the forces from the high revs and torque.

RE: OS Vspec question.....here we go again
 

Thanks, but it's not so much tuning the LSN first, but seting the LSN so that the engine wont load up and stall as you accelerate up to mid range. But it is normal that once I have set the LSN at the start I wont touch it again unless it's an RB as they like a thin low end seting.

RE: OS Vspec question.....here we go again
 

if you set an RB "thin" on the low end it will just lean bog once warm [:'(]

i thought everyone knew that :eek:

looks like i'll have to say it again!
the LSN is directly affected by the setting of the HSN!
any further adjustments you make to the HSN will directly effect the mixture on the low end without even touching the needle!

FACT
:eek:

RE: OS Vspec question.....here we go again
 

Adam I don't care what you have to say on that subject and I am certainly not arrogant enough to say it's the only way, but you've never tried it and it shows, as if you had you would realise that it just works.

RE: OS Vspec question.....here we go again
 

Thats about what i thought you meant, i haven't re-read your breakin method for a while though. That is also what alot of people do set the lsn lean enough so that you can drive it around properly and then tune the top end. Most people then have to tune the lsn after that to get it spot on.

I don't think that spending lots of time idling on the starter is the way to go, but only time will prove me right or wrong on that one

RE: OS Vspec question.....here we go again
 

FACT: The V-Spec is the Official "Internet Engine to Bash". I've had Novas, RB's and Sirio engines go bad prematurely and so has thousands of other people but it doesn't get posted.
My buddy has a brand new WS7III that Jim Hottinger calls a four minute motor because it mysteriously dies around the four minute mark. All engines are man-made and can have problems. I don't see whats the problem with swirl marks on the back plate because all my motors have had it. The engines are built to have the closest possible tolerance and this is part of the wearing-in process.

RE: OS Vspec question.....here we go again
 

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RE: OS Vspec question.....here we go again
 

I agree, if you buy an engine pop it in and race.Running procedure may differ slightly from engine to engine. On the overall the engine should last.
I have read all the hype about the Vspec and decided to try for myself.
Runin was done properly and the engine was fantastic to race one the track. Loved the powerband. I have now 6litres of fuel through the engine. The engine is toast. The wear on the conrod is rediculous. So much slop, know a paperweight. Whether its a bad batch I got or what, I am not about to cough out for ceramic bearings new crank etc.
This engine is a piece of junk. Even the Recab versions wear out.
Lots of engines produce similar powerbands and last forever. Buying a Vspec is like Russian roulette. You dont know how long its gonna last.
I race the s%#$t out of my engines and they must last. They were manufactured to do that.
Look at the differences and see for yourself.
Just my 5 cents. I wont be buying and OS to race.

RE: OS Vspec question.....here we go again
 

What is your point with those pictures?

If you don't like them how come and you bought 3 or more of them.
You are showning speed,eb mods, v-spec ,...jp...
Are those yours or you got them from another forum and posted here?

How many engines have you got and tuned?
I have 7 gallons on mine with barely any rod play.
You are doing something wrong.

RE: OS Vspec question.....here we go again
 

I have 13 Nitro engines of various makes. I like to experiment and stick to what works.
The pics are from another post on as you said eb mods, standard and speed.
I know you swear buy Vspec, My experience is based on personal experience and fellow racers who swear buy the Vspec and Ive seen my bit of hassles on the Vspec. I dont get all the hype on the forums for susch an inferior built engine.
If you wanna talk qaulity create hype on any RB, Any Novarossi or derivatives.
the good eastern built engines are SH, STS, GoTech or same different branded. The OS Speed crank looks like it could be a different material(time will tell) but at the price!

I wish I had such luck with my Vspec. Believe me I would still be racing one. When it comes down to wasting money its another problem.
I will take a photo of my Vspec and show you the play after 6litres. The engine is barely runin.

RE: OS Vspec question.....here we go again
 

you posted pics of engine internals that didnt even belong to you. how was that helpful or informative? id be interested to see pics of YOUR engine wear if you have any.

RE: OS Vspec question.....here we go again
 

Particuarly of the back plate, rod end and crank pin.

RE: OS Vspec question.....here we go again
 

If you look at any nitro engine the backplate will always have some marks. The backplate holds the conrod onto the crankpin.
Anyways Ive taken the pic last night with my phone if the qaulity is not good enough I'll take another with a decent camera.
It is difficult to see the wear feeling it is very loose. I havent had that much play on any Nitro engine ever.

RE: OS Vspec question.....here we go again
 

OK and now one in focus please.

RE: OS Vspec question.....here we go again
 

Ok Da Smak. I did this to prove a point. Just took these.

This engine has about 5litres of fuel.

RE: OS Vspec question.....here we go again
 

That is indeed a lot of wear. Guess you ran it in the quick way. Oh well. New rod time.

RE: OS Vspec question.....here we go again
 

5 liters (just over one gallon) is way less lifespan than most report for a V-Spec, even the people who don't like them get more than that.

One of my V-Spec is at 5 gallons, 19 liters, and is still going strong. The rod is starting to move a tiny bit, but nothing like the pictures above. I will probably replace it at 6 gallons.

RE: OS Vspec question.....here we go again
 

Your pictures are almostscaring me into not opening mine at all, But I know I have very little play in them after 15 Gallons and I put that down to my method of break in.

RE: OS Vspec question.....here we go again
 

I ran this engine in very gently. After reading what evryone said on forums about the Vspec I was carefull. Even bought a heatgun specifically for this engine. I also drilled an extra hole in the conrod for better lubrication. Only ran one race meeting and 3 practice sessions. The engine was awesome when it was new.
The supplier blamed it on the fuel I was using. We only get sidewinder and it has 12% oil. Anyways I am now using the Go21 7 port and man this beats the Vspec handsdown forsure.
De Smak whats you take on this wear?

RE: OS Vspec question.....here we go again
 

I'm pretty sure that this engine wasn't taken care of properly. For one thing, my engines are never dry inside. You have to run a good quality fuel and/or use a good after run oil to prevent dry starts. Friction=Wear. If an engine is well lubricated and kept within a safe temperature range, it lasts forever. RC "forever" is over 50 million rotations of the engine's cycle or 7+ gallons. I'll post some pictures of my Vspec and my RB S5 when I break them down this weekend, they both look polished on the inside

RE: OS Vspec question.....here we go again
 

OK, I think the extra hole is a problem, it will alter the rotational weight and thus the characteristics of the lubrication circuit, 2 holes I fear will not allow the pressure to force the oil to the bearing faces, causing the excessive wear, so I also wonder how much wear there is to the small end and wrist pin and I wonder if you deburred the big end bush correctly. I see the huge scoring on the back plate and that is down to the rod wear.

In conclusion I feel that the early death of this mill is your own fault from being overcautios and not knowing the conciquences of your actions. So I don't feel this is a manifacturing fault but wholely owner related.

RE: OS Vspec question.....here we go again
 

Also your clutch bearings failed quite a while ago too and look at that rear bearing rusting away, that things never seen ARO, I agree the Franny.

RE: OS Vspec question.....here we go again
 

The worst part for me is the wear is on the crankpin and not the conrod. The crank is supposed to be much harder than the brass in the rod.
Anyways this is not the first engine I have run in. I have quite a collection. I havent had any issues with any other mill.
Hence my assesment of the Vspec.
If you guys are blaming user, runin, afterrun oil etc
I am not the only one experiencing the same.
OK thats it Ive moved on to greener pastures and I am happy. My buggy is flying with with my Gotech. This engine is the S$*t.

RE: OS Vspec question.....here we go again
 

the Go engines are definitely the most bang for the buck right now ;)

i can get them for half the price of a Vspec & i'd bet they last twice as long as mine did [>:]

RE: OS Vspec question.....here we go again
 

Half the price of the v-spec?
I can get a v-spec for $220 on ebay Brand New.
How much is the 7 port Go engine...last time I checked was around $190.

I believe Alex is right on the extra hole on the rod...maybe this way the oil that goes in from one hole exits from the other from centrifugal forces.

Maybe the oil in the fuel(I've seen this in another forum where a guy was using the sidewinder 12% oil fuel same as here and had premature wear on his engine...which I think was an O.S. but I'm not sure on this one).

Have you wiped it out before you took the pictures?

RE: OS Vspec question.....here we go again
 

It is harder, but when brass gets hot it expands and becomes tight on the pin, and with no lube in there because of the extra hole, then sometings got to give.

Have you drilled holes in any other conrads?

I solely blame the first item on your list.

RE: OS Vspec question.....here we go again
 

i said i could get one for half the price of a Vspec!

i don't know what the regular price would be?
even if they were the same price (pretty sure the Go is cheaper) i'd bet on the Go lasting longer & therefor providing more bang for the buck :D

i liked my Vspec in the time it was running well, good on fuel, good delivery etc! i'm just bummed along with everyone else about how quick they wear out [:'(]

RE: OS Vspec question.....here we go again
 

Do you know how many Go and v-specs are sold everyday in the world...i bet the v-specs are MUCH MUCH MUCH MUCH more.
Check ebay...you can see 10-20 v-specs some times but no Go.

Check the rb forum and you will see problems with brand new rbs too, same goes for novarossi and everyother engine.
How many guys in this forum have a go engine...and how many got an O.S.???



As for those with bad luck on the v-spec i personally blame their break in or tune or overeving the engine.

RE: OS Vspec question.....here we go again
 

vti I had to wipe the oil off else you would not see the slop.

The Go is new and gaining popularity like you cant believe. At our first 2007 nationals we had 60% running with Go engines. Pretty impressive.
I do my own mods on engines and after modding my Go this engine is scary. Look at any forum and you'll see the questions wrt the Go engine. Its cheaper and delivers more than any top qaulity more expensive engines. I have been running Go since its release last year and have sold to lots of my customers with no comebacks as yet. I have a P5X(love it) and a Crono RS5(love it more) on the shelf and although they are wicked I am running Go 21 7Ports in my CRT and X1. I find compared to Vspec or these two, the Go has a better powerband alround.
As this hobby is an addiction/obsession/sport to me I love to experiment, trying the newest and latest on the market. The worst thing you can do in this sport is to become closedminded. Initially I was fed up with the the cheaper engines. The Go changed all that for me.
As an example, I have compared the Go 21 7Port to WS7, C6, recab Vspec and recently Nova 21plus7(all superb engines) and down the straight none of them can out accelerate me or close on me on the straight.

RE: OS Vspec question.....here we go again
 

I know what you mean, I have also tested a few engines and in off-road races most of the time you can't tell the difference in engine power when all of them are very close to all...power/design/quality...especially the last 2 years.

There are of course the exceptions to this...my two hyper 4 ports...changed the sleeve from one to the other and guess what, it's exhaust port seemed 1mm higher than my previous sleeve when looked from the exhaust on the block.:eek:

I don't run off road anymore I turned into rally game on-road 1/8th races and you can really tell the difference between engines especially out of a 180 degree slow turn. You can see the difference of the v-spec down low compared to all the other.

RE: OS Vspec question.....here we go again
 

I bought a vspec when they first came out put a new ceramic bearing and new sealed front bearing in it at every 5 gallons and the
thing was a rocket for about 12 gallons. I then bought my Jammin CR FTE and 2 new ebmods vspecs.
I now have 2 ebmods vspec's and love them. both have about 4-6 gallons on them and running strong. the 2050 os pipe is a great
match to the vspecs power curve.
If all these problems are happening and people are getting rid of them then WHY are there so many of them in buggys and truggys
at all the club races i go to???!!!??
they pull off the bottom like a crazy horse all the way to the high rpm and have awesome fuel mileage.
SO WHAT they have bearing issues. now you know about it SO do the maintenance and have fun with a very powerful mill.

just my 2 cents sorry im tired of people bashing a awsome mill

tony

RE: OS Vspec question.....here we go again
 

Same problem here..2 gallons of fuel and my V-spec is a $300.00 paper weight.I took great care in the break in of this motor.It was just starting to come alive and ran very nice.Then in just one afternoon of racing it went to hell.I have MAJOR play in the conrod.My buddy has 2 of them and has never gave him a problem so far.What a shame,they realy run nice.Just bought a nova P5 RB mods engine,hope this does better.