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Post by SKR on Aug 8, 2009 15:01:59 GMT -7
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Post by scottman2007 on Sept 5, 2009 10:29:23 GMT -7
Hey Guys Long time no talk,Have been low on funds to build cars,got really slow at my work an hours got cut,but that has changed,hopefully be in the next race.
i ahve see nthe blog about the the dragstrip ,i cant wait a cheap way to test your cars and to have fun,i hear thye are doing a john and ashley force set,ai also hope they do another funny car set without them,i know theyare doing a pro stock set as well.I have talked with one of the gusy that is working on on it and he says its a blast,and he thinks its really going to do well,and whats funny i suggested this to Tom Lowe a couple years ago and he told me he would past it along to his guy,because he thought it was a great idea.
UPDATE ON THE COX VEGA FUNNY CAR.
its still in the works and the reason for the current delays is some of the runnig samples that china has sent the motors wont start,and they are working on this at the factory to solve this problem,Tony a guys who is working on this car,says once they get samples that re fixed andrunning ,it wont take them long at all to get them out,Because the box art is done and and the style of the box is done,and the car is all done as well.
iam still excited about this and the HO track. i have seen some really cool pictures of the vega funny car thats out there and it looks fast standing still.
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Post by dave hochallanged evans on Sept 6, 2009 3:43:24 GMT -7
I will be getting one when it comes out! has everything I want for my purposes, i plan to use some trim tape and mark off car lengths on each lane at both start and finish line,then like PINKS will run two out of three and will have a good ideal how many lengths to spot the cars for an even race.
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Deleted
Deleted Member
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Post by Deleted on Oct 6, 2009 21:59:30 GMT -7
That could easily spring board a lot of people into HO drag racing.
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Post by SKR on Mar 17, 2010 9:07:33 GMT -7
Checking out the AW blog and it looks like things are coming along with their Dragstrip and cars. Good news for us Drag Fans and HO Drag Racing in general. Should bring some more enthusiast to this hobby. It mentions something about a NHRA 4 Gear racing program. Sounds interesting. www.autoworldblog.com/category/auto-world/ |
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L_Brown
Pro Stock
Larry Brown - North Texas
Posts: 347
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Post by L_Brown on Mar 17, 2010 10:03:02 GMT -7
I am digging those funny cars!!!!!!!!!!
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Post by scottman2007 on Mar 17, 2010 13:11:57 GMT -7
Yeah I will have one the day it comes out.It will be great for some Local Events and Testing.
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Deleted
Deleted Member
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Post by Deleted on Mar 17, 2010 19:37:47 GMT -7
 I bought one of those tracks off e-bay last night from a guy who had 6 of them only 115 and free shipping. I have a question about the power supply that it comes with only one should I buy a second one? or buy a good power supply? also what kind of volts and amps do the ones with the track have surely not enough. how much amperage and voltage should i be running. running mostly mega-g cars with the 10 dollar motor and neo mags. thanks for the help in advance. mac
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Post by SKR on Mar 18, 2010 7:17:44 GMT -7
Hi Mac, I'll leave the Power Supply suggestions up to the guys that use them. We run on Batteries here and I have no experience with Power Supplies other than the stock set up your talking about. I can tell you that you will need a better power source if you start using Neo Motor magnets and custom wound armatures. Home set power supplies just don't have the amperage you need to feed these motors and you'll end up burning them up. Here is some good info. Maybe one of the guys that run Power Supplies will chime in. This was posted by Chris (killerskid) in another thread. I'm surprised the old man ("killer") hasn't chimed in with an opinion on the power sources.
It’s been awhile since my one required electrical engineering course, but I’ll help the best I can.
A common misconception is that voltage is a significantly important variable to be controlled with slot cars. In reality, small differences in voltage won’t affect the total power to the slot car, so long as an adequate amount of current is available. The small electric motor will draw the adequate amount of amperage to offset small changes in voltage. That’s why they can run the same dial-ins all night at Psycho Slots and simultaneously have a small voltage drop. This can be summed up with Joule’s Law: Power = Current X Voltage. Just remember the DC motor only pulls the current it needs.
Does the small change in voltage subtly affect HOW the car performs (torque, heat, etc.)? Maybe to some small degree but it is probably a second or more likely a third order affect. The affect is probably about the same as not placing the car in the exact same orientation on the start line, or not having the armature in the exact same position, or not having precisely the same gears meshing. I could go on and on but you get the idea, it’s not measurable.
I personally have a preference for batteries over AC/DC power supplies for one main reason: the AC/DC power supply is plugged into the wall. Wall power is not consistent and you have very little control over it. You may think the power company is sending you good power but it can change at any time. AC/DC power supplies combat these changes by using capacitors or some other smoothing feature. Regardless, I think if you did a comparison of a battery power vs. AC/DC power supply over a course of a race, you’d see that battery power is more consistent. You may overcome the difference if you pay a pretty penny ($400+) for very good power supply.
Another possible problem is the bleed through of AC heating the motors. However, it shouldn’t be as significant to drag racing as road racing.
In the end here’s how I see it. The AC/DC power supply is built to imitate the perfect DC power source (batteries). The AC/DC power supply offers a lower effort alternative to a battery. However, a good AC/DC power supply is expensive. Other lesser AC/DC power supplies may do the job if you buy two. Now you’ve got two power supplies plugged into the same circuit (we’re back to the wall power which I don’t like).
Ultimately, you have to judge the tradeoffs for yourself. A few deep cycle batteries plus a good charger will almost always cost less than a comparable AC/DC power supply alternative. Do you perceive the maintenance/charging of deep cycle batteries as burdensome? Some do. Some don’t. Would you rather just plug in the wall and run? Venting batteries shouldn’t be an issue if you don’t overcharge, but it wouldn’t hurt to open a window (I think they even make maintenance free versions which are more expensive). Is the AC/DC power supply you can afford good enough to imitate a consistent DC power source? How long will the batteries last? With good maintenance, some will last many years, with bad maintenance not so much. How long will the AC/DC power supply last? A good power supply will probably last a long time. A bad power supply will become less and less reliable as the heat generated due to the AC/DC conversion tends to cause damage. You can probably judge the quality of the power supply by the warranty offered.
Wow, I wrote more than I expected. For me, I would choose batteries because it’s a cheaper and simpler system: fewer variables are involved which I prefer. However, to each their own, a good AC/DC power supply probably isn’t significantly different.
Here's an old thread I found as well that may be helpful:
groups.google.com/group/alt.hobbies.slotcars/browse_thread/thread/4ef0531e1538ec67/e59eb220e4a8b10c?lnk=st&q= dc+motor+ripple+damage&rnum=2&hl=en#
« Last Edit: Sept 17, 2007, 7:21pm by killerskid »
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ol55
Pro Stock
Posts: 117
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Post by ol55 on Mar 19, 2010 10:35:44 GMT -7
Yea buddy this is waaay koool!
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I bought one of those tracks off e-bay last night from a guy who had 6 of them only 115 and free shipping. I have a question about the power supply that it comes with only one should I buy a second one? or buy a good power supply? also what kind of volts and amps do the ones with the track have surely not enough. how much amperage and voltage should i be running. running mostly mega-g cars with the 10 dollar motor and neo mags. thanks for the help in advance.