Pan Car Weight

[Blake]

Ah, gotcha.

Well yes, if it is infact impossible to get a NiMH car anywhere near the weight limit then then yes, we should increase the weight limit for this transitional year.

I picked the 1200g limit based on the ROAR rules for the "10th Scale Electric On-road" class.  Maybe 1275g or 1300g would be a better rule.  I know that my Gen-X10 would have come in at about 1275g with a NiMH battery.


Blake

[RC51]

Yeah, I don't know what I could have done to reduce the weight on the chassis any further either. Mind you, my weight was with a body as opposed to a bare chassis. I weighed in at bare bones equimpent etc. Even with a light amount of paint on the body it was still 1340+ grams. Maybe I could have run the smaller profile servo, shortened wires etc, but the chassis is drilled as it is ....

P.

[WhoDoYouThink]

Ok, I understand where you are coming from now Thomas.

My old school wide 10L with a 19T and a LiPo, turned down front and rear tires, a body, electronics and added lead weighed in at 1220gr.

Phil, just out of interest, did you have your water cooling system on board your Pro 10 car?

[DekelzMan]

Could we get everyone to post if they are currently running NiMh in their Pan Cars? I want to know if this is a reasonable percentage of the cars or just a couple. Also if they plan to switch at any time during this season.

Mick

[Tom]

Not everyone reads the forums, so let's be careful when collecting statistics.

I saw at least 4 cars with NiMH batteries, out of around 8 I looked at, and we had 20 cars the first week.

We should do a survey next week at the track if we really need numbers, but I'd expect it's a significant percentage.  Pan cars are supposed to be way cheaper than touring cars, which means for many of us using what we've already got lying around.

You could just start a new topic and add a poll to it.

I've got NiMH in right now, and I'll get Lithium if I have to.  I was hoping more of the fast guys would stick to using NiMH to even up the field, but that was being a bit wishfull I think.

[RC51]

Phil, just out of interest, did you have your water cooling system on board your Pro 10 car?

Hey, Nick.

No, I didn't run the cooling system in the car and this was the weight before I added a small 200mAh LiPo and twin fans for the motor. The Novak GTB is a heavy ESC and since it's BL, there is a third wire to run to the motor, plus the plugs if you use them. So, those components alone can add a fair extra weight. I'll try a smaller profile servo to see if that helps.

Yes, Mick, I plan to switch to LiPo as soon as the saddle packs hit the ground.

BTW, if you are wondering about BL speed, I suspect I could gear up 2-3 teeth since motor temp for the only heat I finished was 110 degrees. Mick was the only car that pulled me on the straight during that heat.

P.

[Gorden]

I was running a SMC 4000 & 13.5 BL for the 3 heats I ran before changing to a 4 cell pack. but I forgot to reset the ESC from lipo so it shut down almost right away due to low voltage.

My son Mike was running 6 cell 3300's & a 19t next time he will be using 4200s and a Stock motor as we had them all made into 4 cell packs

[Arch]

My car weighed  1316 without transponder ,I would be comfortable with a 1275-1300g weight limit.

[serpent]

i just looked at the roar rules 42.3ounces is the weight.42.3ozx28.35g=1199.2 g .so the minimum weight we use is bang on .one thing i have noticed is that brushless cars no matter what battery have more power .it may or may not show in the race results .the driving of these missiles some times leaves a bit to be desired .but we are all still learning how .lol.i have been using up alot of motor stuff with 19 turn brushed to stay competetive with 10.5 brushless.maybe the 13.5 motor that was originally decided on should be reconsidered.also the 10.5 is not the brushless equivalent to 19 turn i was under the impression that the 13.5 was the choice.so i beleive we have more than a weight problem.so all we have to do is have alot of fun racing while we learn all the pros and cons of all the different technologies(antique to current)another question is should a narrow car be allowed to be lighter there is an aerodynamic disadvantage  because smaller wing area?it might be faster in a straight line but our track is to short .lots of worms in this can who wants to open it ?lol see you all sunday funday

[Gorden]

i just looked at the roar rules 42.3ounces is the weight.42.3ozx28.35g=1199.2 g .so the minimum weight we use is bang on .one thing i have noticed is that brushless cars no matter what battery have more power .it may or may not show in the race results .the driving of these missiles some times leaves a bit to be desired .but we are all still learning how .lol.i have been using up alot of motor stuff with 19 turn brushed to stay competetive with 10.5 brushless.maybe the 13.5 motor that was originally decided on should be reconsidered.also the 10.5 is not the brushless equivalent to 19 turn i was under the impression that the 13.5 was the choice.so i beleive we have more than a weight problem.so all we have to do is have alot of fun racing while we learn all the pros and cons of all the different technologies(antique to current)another question is should a narrow car be allowed to be lighter there is an aerodynamic disadvantage  because smaller wing area?it might be faster in a straight line but our track is to short .lots of worms in this can who wants to open it ?lol see you all sunday funday

Maybe on Sunday run only the 13.5's & 19t for the day and see how things panout

-=light=-

[RC51]

Think about it, Guys.

We tested this indoors and 100% cooked a 13.5 trying to keep up to a 19T and it still wasn't fast enough which is also borne out on the dyno and widely published. The exec then made an announcement to go with 10.5. No less than 10 IROCC guys bought 10.5 motors at that point although not all are racing them at present. What are the implications for switching?

[WhoDoYouThink]

Well, I don't know about any of the other 19 turn Pan Car drivers, but I cooked one arm and badly discoloured another(along with frying two sets of brushes) trying to obtain parity in power with the 10.5 brushless motors. I just re-weighed my car, race ready it weighs 1243g including a motor heat sink.
I know the faster 10.5 brushless motored cars out there weigh considerably more than that.
So I don't think weight is the issue we should be going after just yet.

[DekelzMan]

I'm curious as to what the winning motor setups have been for the  A main winning cars since the season began...


Mick

[Blake]

May 4th
1. Bell, Blake: Lipo/19T
2. Younger, Tom: NiMH/19T
3. Szirmay, Mick: Lipo/19T

May 11th
1. Roberts, Craig: Lipo/19T
2. Archer, Shane: Batt?/19T
3. Bell, Blake: Lipo/19T

May 18th
1. Bernard, Gerry: NiMH/19T
2. Armstrong, Glenn: Batt?/10.5
3. Bell, Blake: Lipo/19T

May 25th
1. Ashmore, Brian: Lipo/19T
2. Younger, Tom: NiMH/19T
3. Bell, Blake: Lipo/19T

I am pretty sure this information is correct.  Maybe someone can help me fill in the blanks for Shane, Gerry, and Glenn's batteries - not sure what they were running.


Blake

[DekelzMan]

I know there are many factors as to why someone wins or loses and the theory is that Brushless SHOULD be doing better as they are more efficient but so far the stats are not showing that Brushless has been dominating.

I know Glenn and I have had some pretty good battles the few times that I've run and I did not feel he had a horsepower advantage.

Mick