RCU Forums - re-fueling

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i guess you can consider this a noob question, but for all you guys who don't like them, just dont read it

when racing how do you know when to re-fuel? are there any signs? does it just start bogging or....what?

thanks

OK not a really noob question, but with a little thought you could implement these ideas. Also this is the first time I've seen this Q on any forum.

1. You can tkae your ride around the intended race track during practice and count how many laps you do per tank.

2. Take the car out during practice and count how long a tank lasts in minutes.

3. Run the b***ard dry each time and have your pit bit run out and collect it, bring it back, refuel it and start it again. Each time losing a lap.

Most engines will run for 7 mins/tank at race pace, with many newer models extending this up to 10 mins with the right venturi fited (V-Spec) though this costs you speed. You need to balance outthe time taken to pit against the speed lost on the track.

Also when a tank starts to run out the engine will start to lean bog (seem to rev up for no reason). This is the most damaging thing you could do to a perfectly tuned mill as the loss of fuel means loss of lube at high revs. Though a mill will cut out at this point, it has still run dry.

cool, thanks for your help

The tracks that I race have a speaker on the drivers stand...along with calling out race order and the announcer trying to screw with peoples heads...they also call out time remaining every minute on the minute.
As long as you and your pit ***** are on the same strategy...and you dont forget to pit, running out of fuel is not a problem.
Your pit ***** dousing your brakes and clutch with fuel is another issue[:@]

Find out how long a tank will last as Alex has stated, then ensure your pit man has a stop watch, confirm the time with him that you want to come in for a fuel stop, get him to shout and raise his arm to notify you that its time to pit. I normally run for 7 1/2 mins then I pit for fuel.

Works for me.

Mike

If you can finish a 5 min heat, to be safe always pit every 5 min.

But to save valuable seconds, do what others have already said, time your runtime with each motor pipe combo and either listen to the announcer giving time elapsed in the race or have a pit guy that comes under the drivers stand a lap before your schedule pit to let you know it's time.

1 more question, where do you get a transponder? do you have to buy one or do they provide them at the track?

most tracks should provide transponders but you can buy a personal transponder. as far as the pit question what i do when i pit for someone is i get a digital stop wacth and fill my buddies bug up and as soon as he hits the track i will time him till his bug starts to burp for fuel and push stop if the wacth said 6.58 mins. when he burped i will pit him at 6.25 min. and let him know 1 lap before. ive also been to tracks that sound a horn every 7 mins. go to youre local track and wacth races.[8D]

Watch for the lean in the engine. Engines like the P-5 are such good motors to tune that they will let you know when they are running low just listen. Also the new M-11 has a vibrating option that vibrates to let you know your time. Good option

hey thanks a lot guys. how much are the personal transponders? and where can i get one for cheap?

PTs are around $100 and can be bought from www.amb-it.com