Oval racing just doesn't interest me like it use to. The main reason I go is to cycle batteries.
As for all your other comments,
Sinus infection, had other comittments,(r/c is not my life, anymore),and the last thing, I've helped the guys in the buggy class especially way more than I should have, because sometimes now I'm chasing them. And if thats not putting the cards on the table , I don't know what is.

Tommy :thumbsup:

Slider, You know me I'm going to have fun. I've had a blast over in Sippi with the guys. I've drove about everything made,drank beer and wore out some tires. And I don't have to do nothing but turn the wheel and hammer on it. there track has all that banking so you can put the power down. I know some of the guys over there don't like me H_ll some of the racers at our track don't like me either but they come and race. So if your gonna talk Sh_t you better bring your SH_T(JR's favorite word) and race. Man I'm going to get hacked to dead this weekend.lol

Tony

Well I like rc racing I perfer offroad racing. Oval racing is fun. Try to figure out how to go as fast as I can with what I got. A Record is something you try to beat. Now not everynight you get a chance to go after a record. Sometimes you have to race the other competitors. You just can't run over them like you are in a monster truck! It's all about haveing fun and folks respecting other folks. Everyone comes out for their own reasons. So now that we have decided that a buggy must have the buggy record let's have fun and work with each other and just have a good time. ;)

Oh ya, Tommy I need to borrow some stuff if I could get you to bring it with you or we meet somewhere one day!

All in innocent ragging.

Tony,
I cant think of anyone over here that doesn't like you.
So I wouldn't know what thats about. But then again its the same way with me over here.

Tommy :thumbsup:

Tony, same here. I don't know who wouldn't like you over here. You seem fine to me! Although you are kinda a big dreamer! LOL :) (!39 laps with a buggy!) LOL

All in good fun!

Hey you came over here and drank my beer, I DONT LIKE YOU!hahahahahahaha

See ya Ryan

Rufus buys that great tasting beer with the born on dates thats fresh to.
Only the best will do.

Tommy :jest:

yes sir I may do quite a few things cheap but it ant that. Guys I think we are all having some friendly talks and some of us like to pick more than others, but I want to get one thing straight I may not agree with everything you say but I dont have a problem or dislike anyone who we race with and our main goal is to win and have fun. That is the way we all should be, The thing you always have to remenber is if you break that one person that you dont exactly jive with may be the only person at the track that has a part to fix you. Be consederate of everyone and help make everyone better, just like Tommy said some times you give away a little too much, but if they are as fast as you then you dont have to worry about them being to slow and in the way. so any way peace out and I cant wait to out run somebody. Ala guys give us a little input on the details of the new off road.

You will have to talk to MR.Electric he and some others(sorry I don't know who all is helping) that question. I'll be there around 4:30 or so Friday. So bring your beers and full blown buggies,E and G-Trucks and them monsters to the track and lets have a big turn out. The electric crowd has been low the last few weeks. Well let me go get them Gotjuice? motors ready.

Tony

Dang Ryan, for a minute I got that warm feeling inside.

Then I remembered I had to go to the bathroom.

Tommy :thumbsup:

I don't know what to say!

I do have a question though. Is 7.5 average volts @ 20amp discharge good with 425sec? What is a good set of batt's? I cycled my packs and two of them are around this.

Just to up date ya'll about my rims. They just got them yesterday. Told me that since mine was a specail case (ya right) that they would turn them around the same day. So I should get them back next week or two. Joy :(

Go down to the LHS and by the highest priced pac of batteries that they have, put them together and see what they do. Then you will have a baseline.lol
Because $80 packs have got to be better than $50 packs.lol

But seriously, I've heard anything over 7.0 is a good pack. The higher the better. But that is over the whole discharge. You should look at the 4min. mark to see what they are since that is all you use in a race. The rest of it is just runtime. Oval draws more out of the battery than off-road. You should also look at the IR of the pack. It needs to be a lower number. Low IR means punch or how well the power comes out of the battery.

Tommy :thumbsup:

Still moving in dirt for the offroad. Gonna take a few weeks before its ready.

Jones.If you did a complete cycle. 7.5 avg volts at 20amp discharge equals.1.25 cells so at 30 discharge it would still be a good Numbered cell.I know Tony could tell you what it would be at 30.But those ought to do a very good Job.

They are my SMC they where 30 discharge batt's but Since I use them for stock racing I am going to stick with 20amp discharge. How do I read IR? I'm still trying to learn how to read this 35 gfx. I have my discharge cut off at 5.4volts. When dischargeing they get down to around 6.9- 7.0 and drop like a rock if I remember right. These are the very best packs I have ever owned.

My old packs at the same charge and discharge are around 6.8-6.7 avg discharge @ 20amps around 470-490 sec. when charging those they peak around 9.8 even 10.3 once. They are old. I guess I'll use them as mod packs.

Am I messing up by discharging at 20 amps? I thought if I discharged at 20 they would have more punch with a stock motor. I've ran my stock batts once with my 8x1 and it killed the batt's. I then ran the packs in my stock motor and they didn't have almost no punch! What gives.

Hey look guys we have more replies than alabama thread! Ok one by my post!

Were going for the record! LOL

From what I remember, if you bought a pack that had say 1.15 voltage at 30 amps, I believe at 20 amps it would be 1.175 or so. If you cycle your batteries at 30 amps they get a lot hotter and it weeds the weeker packs out. They say there is no advantage to doing it every week either, just wearing your packs out. When your running cycles, when they are done, write down all the information you can.
I usually do mine every 3 or 4 months. Plus I trying something with new packs that in ythe past have had no luck with, but all the fast guys are doing it.

One other thing, if they peak high like you say, the IR has built up in them. And there's no way to lower it. They are slowly turning into practice packs and eventually junk. I also wouldn't worry about run time, remember they're 3300's.
Some matchers are getting numbers know at 35 amps.
At the regionals the first heat I only put 1800mah into the pack, last lap was as fast as the first.

Tommy

I have a zapper if anyone wants it, I don't run electric any more and will turn it loose.

I called and talked to some folks and they where kinda pushing the 3000mah. I asked them all about the discharge rate and they all really said the same thing. Just go with what we have on the lable. Some where saying to go with the high discharge rate because they wouldn't be hot as long of a time. I guess I'll try it at 30 discharge and see how the numbers turn out. All of them said dead short the packs if you didn't worry about life span. They all had their own tray and when going to charge them from a dead short. Charge them at 1 amp for a couple of sec. Then charge like norm.

Does anyone know where it tells the IR at? (On a turbo 35 gfx)

It's with the discharge info. AIR is one and I think RIR. It gives both.

I seen the air and the rir. I thought that was it. But the numbers where real long! Which one do I read?

These probably have a high IR because I had a hard time putting them togather. (I didn't have a jig, plus my iron was crapping out so I know I probably hurt them then)

Add one more question. What is AIR and RIR?

AIR- actual internal resistence
I don't know what rir is, maybe reletive or real internal resistence.
On the older Turbo's they only listed 3 numbers like 170 or so.
If you got the cells to hot when you soildered them, you could have hurt them. Some battery companies do that for you. Fusion comes to mind.
If I called a company and they recommended 3000's, I would have hung up.
Why go back in time.

Tommy

If I called a company and they recommended 3000's, I would have hung up.
Why go back in time.

Tommy


:jest: :roll: :jest:

Well the rain has taken another chance away. I hate the rain. Not going to come over with 60% chance of rain. See ya another day.

Tony

Sat
Oct 09 T-Storms 78°/60° 80 % chance of rain


not looking good for Jackson either

Be nice to go to Redstick. May have to think about it for awhile, like until Saturday morning at about 4:00a.m.

Jones,
If it rains us out(good possibility) I think I'm going.

jones,
Unless you know of another indoor track within 3 hours.

I'm going somewhere after staying in the house all of last weekend.

Tommy, Talk to me. We are supose to be haveing a yard sale Sat. If it is raining I doubt we will. Tommy let me know something.

On the 3300 or 3000 deal. It seemed like there is more higher amp 3000 packs around numbers in the 1.75-1.79.

I cycled my packs again at 30 amp discharge. Numbers came out around the same but run time was down to 306,311 my AIR was 20.7 and 20.4 Is my AIR high? What is high?

I had called last night. I think I seen where you called. I got drug out and had to start moving things. I got all of my motors built. (the best I can with what I got) Car is in tip top. Is casey going? If I go what ride we be taking?

it looks like they have changed things a bit by those numbers.

Casey has the party to go to.

Like what?

Oh one of those parties! What about JJD4?

point well taken.

jj going to the coast for car show. and he ain't got no electric

but I'm going. they are having track change this weekend to.

It is cruising the coast this week ain't it!

Your right! If we go this weekend with the new track. We might have a chance to get into the A main since they would only have one or two days of practice on it.

Tommy I am a no go for flight :( Being that yesterday was our anniversary and she has a lot of thing's planned for me this weekend! Alittle to late. I'm going to need alittle more time for planning. Shucks I would have liked to.

Talked to Casey, he can't go either, anniversary is Saturday.
I may just go by myself. May see if Terry or David from Jackson will go down. I'm going somewhere to race.

sorry man. I would like to race somewhere to this weekend! Spent time all this week working on motors and stuff and now don't get to race. Next weekend is looking good though.

I'm pretty sure I'll be out of town next weekend. Or so it looks right now.

hey Ralph my name is Ryan Mathis, I dont know if you remember me, I kind of remember you, but anyway Carl Peden told me to tell you Hey, and ask how you were doing. So see you around and next time you get over this way come by and race with us one night.

Can someone tell me how an exhaust manifold leak effects performance?

Brent

Can someone tell me how an exhaust manifold leak effects performance?

BrentYea... Overall I would say it effects it badly!;) Any other questions?:p

Just kidding... Exhaust pressure comes from the pipe and that in-turn puts a "head pressure" on the fuel to the carb. Usually something around 1 to 2 PSI. With an exhaust leak the carb may not be getting fuel as expected. Most importantly it may not be getting it RELIABLY. By that I mean that at times it may be getting a full 2 PSI but a moment later it may be getting something else. At idle there is little exhaust pressure and therefore little fuel being "pumped" to the engine. The engine may idle fine. The problem shows up when you try and acclerated or go to some mid to full open carb setting. The engine is either stupid lean or, if you richen it up some, it quickly goes stupid rich. You'll pull you hair out chassing this problem. Folks usually report that their engine is very lean and or hot during a race but if they open the needle 1/4 to a 1/2 turn it goes so rich it won't run.

I consider the gasket at the case and header something of a consumable. You can burn them up one a week. Sometimes they last several weekends. The gasket between the pipe and header runs very much cooler and seems to last longer... but they do go bad... (don't they Clint!)

Other notes...
- a gas tank/cap that doesn't seal well will get you the same nasty running for the same reason.
- A system check... Pinch the fuel line to the carb, close the exhaust port with the piston and blow in the pipe stinger... look for bubbles... anywhere.
- If you run one of the pipes that the exhaust pressure line is pushed in a hole in the pipe be carefull... they have been problematic for some. The line needs to be in the middle(ish) of the pipe... and not melted shut (Donald).
- contrary to popular belief you can run most of our engine without muffler pressure or any pipe at all. The only reason we HAVE to take them off the track if the header/pipe comes loose during a race is because the engine looses pipe pressure and goes lean. In most cases you could remove the pipe altogether and retune the engine and not hurt anything. If would be tough to needle though. On some engines the fuel draw is not strong enough to run without some fuel pressure and no amount of richening will get 'em rich enough. It's also a ROAR rule. You must take your toy off the track if the pipe comes loose.

Is there an answer to your question somewhere in there?


Bill Vail

That's great Bill! Thanks. I'm having the exact symptoms that you're talking
about. When I test the tank for leaks, does it need to be full of fuel or what?

When I test the tank for leaks, does it need to be full of fuel or what?Well not really. I fact you're less likely to get a mouth full of fuel if it's empty. When you blow in the pipe outlet (when the exhaust port is closed) there is only one other place for the air/fuel to leave the pipe... that is down the pressure line to the tank. The tank will "inflate" and try and push the air/fuel to the carb (which you pinched). If everything is good it will hold pressure. If something is leaking it will show up. I would look at the fit between the header and the engine case. This is not very well standardized and there are a hundered different sizes of header, case and cylicone gasket. The better the fit (tight slip fit) the longer they last.

A little Simple Green may blow bubbles. Like checking a flat tire for a nail?

Bill Vail

Thanks again for the help Bill. I haven't got to race yet with your fuel, but
did some backyard bashing and I can tell a difference(smells nice too).
Can't wait to see what it'll do after some repairs.

Brent

A high temp silicone.much better for a header than a gasket.Have never had one leak with the silicone.

hey Ralph my name is Ryan Mathis, I dont know if you remember me, I kind of remember you, but anyway Carl Peden told me to tell you Hey, and ask how you were doing. So see you around and next time you get over this way come by and race with us one night.

Whats up Ryan, So you know ole Carl huu. Tell him I said WHATS UP !!!
The next time I come I will try to get down to the track.

Hey Rainey I need a little help I heard one of the guys over there has a kanaii 1/8 scale buggy and seems to be running real good, if you know him would you have him call me or just get on here I need a few pointers. 601-917-4336

thanks Ryan

Hey Tommy check your pm