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U.S. Vintage Trans-Am Racing Part 2

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Old 01-03-2013, 09:08 AM
  #3601  
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Just for clarification, the wheels pictured above will be made of plastic. At first, I thought that they were going to make them from steel. (what a bonehead I am).
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Old 01-03-2013, 10:45 AM
  #3602  
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Originally Posted by wwddww34
Originally Posted by GeekSpeed
Guys, quick question about tires and wheels for a 190mm tc.

I am looking at the HPI '70 Boss 302 body.
http://www.hpiracing.com/products/en/17546/

I can't figure out if I need 31mm tires in the back and 26mm in the front. I BELIEVE that is the case, but I am not sure. Also, if I run 26mm in front, what wheels do I use. I thought I would need 6mm offset, but it does not appear that 26mm 6mm offset wheels are available.

What wheel/tire package should I use?
Hello GeekSpeed,

First of all don't worry about adding any offset to the front wheels. All of the HPI VTA bodies (including the Boss 302 Mustang) are designed to be used with 26mm wide 0mm offset front wheels and 31mm wide 6mm offset rear wheels.

The tires are very easy. For VTA racing you must use HPI #4793 Vintage Racing Tire 26mm D-Compound for the front pair and HPI #4797 Vintage Racing Tire 31mm D-Compound for the rear pair.

When it comes to VTA wheels (or rims) you have a variety of colors and styles to pick from. There are 14 styles of front rims and 14 rear rims.
You can get a quick idea of what all the different VTA wheels look like by going to this web page. They did a great job of listing all of the USVTA wheels on one page.
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Old 01-03-2013, 10:51 AM
  #3603  
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VTA is really starting to get popular in southern California. One of the biggest R/C Pro Shops in the Los Angeles area, TQ RC Racing, has made a page dedicated only to USVTA parts. Click on the pic below to take a look at their "VTA Shop"...


Last edited by rcsuicide; 01-03-2013 at 12:40 PM.
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Old 01-03-2013, 04:24 PM
  #3604  
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What's up guys anything new in VTA land I have been away for a few weeks
With all this holiday crap lol just checking in
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Old 01-04-2013, 08:19 AM
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Welcome back Pete!

Are you going to race VTA at the Snowbirds this year? If you are then click on the green "I'm Going" button in the pick below.

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Old 01-04-2013, 08:32 AM
  #3606  
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Originally Posted by rcpaintinpete
What's up guys anything new in VTA land I have been away for a few weeks
With all this holiday crap lol just checking in
Welcome back! The latest news is that VTA has gone Viral all over the country!
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Old 01-04-2013, 08:40 AM
  #3607  
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Speed Passion ESC's are still 10% off until Jan. 8.


Last edited by DontChangeUSVTA; 01-04-2013 at 09:00 AM.
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Old 01-04-2013, 12:39 PM
  #3608  
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Sure wish I could use the Speed Passion 25.5 Motor.

$42.64 is a great price
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Old 01-04-2013, 02:07 PM
  #3609  
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Originally Posted by Mundy1
Sure wish I could use the Speed Passion 25.5 Motor.

$42.64 is a great price
Somebody once said "be careful about what you wish for." I purchased a Cirtix Stock Club race + Ultra Sportsman 25.5T motor Combo. I put the combo in my VTA to test it and found out my car was going much slower than before. I gave the motor to my roommate who was able to test it with his SkyRC BMC-01 Brushless Motor Checker. His motor checker showed my S.P. 25.5 motor had about 1223 Kv. We tested a Novak Ballistic 25.5 motor in the BMC-01 Checker and it showed the Ballistic had about 1542 Kv. The Ballistic motor has +319 Kv advantage over the S.P. 25.5 motor.

Moral of this story ... You get what you pay for.
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Old 01-04-2013, 02:29 PM
  #3610  
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Originally Posted by wwddww34
... His motor checker showed my S.P. 25.5 motor had about 1223 Kv. We tested a Novak Ballistic 25.5 motor in the BMC-01 Checker and it showed the Ballistic had about 1542 Kv. The Ballistic motor has +319 Kv advantage over the S.P. 25.5 motor.

Moral of this story ... You get what you pay for.
You touch on the reason why USVTA rules call out only 1 manufacturer of motors, Novak. If you ever compare two 25.5 turn brushless motors made by two different manufacturers, you will find that each motor has a different power output. Like in your example the Novak Ballistic 25.5 has approx. 1550 Kv while the Speed Passion 25.5 has approx. 1220 Kv. I also know that the Trinity D3 25.5 motor has approx. 1800 Kv. So you can imagine that if the USVTA motor list were to be open to any make 25.5 turn motor, the most competitive VTA drivers would eventually figure out which motor has the highest Kv output and drive up the demand for that motor. So in most cases, the higher the motor's Kv gets, the more money it costs you to buy one. It's the whole "supply and demand" thing.
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Old 01-04-2013, 04:17 PM
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Originally Posted by DontChangeUSVTA
You touch on the reason why USVTA rules call out only 1 manufacturer of motors, Novak. If you ever compare two 25.5 turn brushless motors made by two different manufacturers, you will find that each motor has a different power output. Like in your example the Novak Ballistic 25.5 has approx. 1550 Kv while the Speed Passion 25.5 has approx. 1220 Kv. I also know that the Trinity D3 25.5 motor has approx. 1800 Kv. So you can imagine that if the USVTA motor list were to be open to any make 25.5 turn motor, the most competitive VTA drivers would eventually figure out which motor has the highest Kv output and drive up the demand for that motor. So in most cases, the higher the motor's Kv gets, the more money it costs you to buy one. It's the whole "supply and demand" thing.
I agree with you up until that last part about supply and demand being tied to KV. Look at the the D3, the Tekin Gen2's, RevTech's etc etc in 17.5 and generally all other motors in the same league. They are are $89 for any KV.

That said, 1 motor does make things easy!
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Old 01-04-2013, 04:34 PM
  #3612  
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When MFG's release these Kv numbers what timing are going by? Does a D3.5 make 1800 Kv at 0 degrees or 45 degrees or both? Are these motor ratings about the same as the C ratings on some of these batteries?
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Old 01-04-2013, 04:38 PM
  #3613  
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Originally Posted by DontChangeUSVTA
You touch on the reason why USVTA rules call out only 1 manufacturer of motors, Novak. If you ever compare two 25.5 turn brushless motors made by two different manufacturers, you will find that each motor has a different power output. Like in your example the Novak Ballistic 25.5 has approx. 1550 Kv while the Speed Passion 25.5 has approx. 1220 Kv. I also know that the Trinity D3 25.5 motor has approx. 1800 Kv. So you can imagine that if the USVTA motor list were to be open to any make 25.5 turn motor, the most competitive VTA drivers would eventually figure out which motor has the highest Kv output and drive up the demand for that motor. So in most cases, the higher the motor's Kv gets, the more money it costs you to buy one. It's the whole "supply and demand" thing.
Kv isn't the whole picture, especially when you are comparing two motors with the same number of turns. Kv doesn't have anything to do with the amount of actual power the motor has. Power is what does work, not Kv. The most you can take away from solelythe differing Kv is that you will need to gear them differently. To make any other statement about them will require more information.
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Old 01-04-2013, 08:37 PM
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Default Thunder Jam V

Thunder Jam V (Grand Slam Series)
Jan 19-20th
Thunder RC Raceway
Nashville,TN

This is the 5th year for the Thunder Jam On-road Championships. We have been invited to join the Midwest Grand Slam Series this year. The Thunder Jam has always been Southeast premier on-road event. Now with the history of the MWGS, the event will continue to grow and be better than ever.

USVTA Classes:
VTA and GT

ROAR Classes:
12th scale pancar and Touring Car(TC)
17.5
13.5
mod

Top 3 and TQ payback

Entry:
$35
$25

Limited to 80 bodies

5pm to 10pm Friday practice by classes

5-15 minute blocks of similar cars

Saturday

Class practice 8am till 10:30am practice

11am 3 rounds resort after 2

Sunday

practice 8am till 9:30am

resort for LCQ 10am

mains 30 minutes after last heat.
Attached Thumbnails U.S. Vintage Trans-Am Racing Part 2-2011-race-068.jpg   U.S. Vintage Trans-Am Racing Part 2-img_3001ahm.jpg   U.S. Vintage Trans-Am Racing Part 2-normal_dsc_0008.jpg   U.S. Vintage Trans-Am Racing Part 2-pics-computer-2-535.jpg   U.S. Vintage Trans-Am Racing Part 2-thunder-jam-2009-006.jpg  

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Old 01-04-2013, 09:14 PM
  #3615  
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Originally Posted by wwddww34
Somebody once said "be careful about what you wish for." I purchased a Cirtix Stock Club race + Ultra Sportsman 25.5T motor Combo. I put the combo in my VTA to test it and found out my car was going much slower than before. I gave the motor to my roommate who was able to test it with his SkyRC BMC-01 Brushless Motor Checker. His motor checker showed my S.P. 25.5 motor had about 1223 Kv. We tested a Novak Ballistic 25.5 motor in the BMC-01 Checker and it showed the Ballistic had about 1542 Kv. The Ballistic motor has +319 Kv advantage over the S.P. 25.5 motor.

Moral of this story ... You get what you pay for.
Just asking did you adjust the timing on the SP motor before you ran it on the machine? Ultra Sportsman motors do have adjustable timing but its not marked on the can like the Novak motor. So if you didnt adjust the timing and just ran it against a turned up Novak its not shocking thats what you saw with your results. If you still have the SP motor turn up the timing on it and see what it does just to see I would be interested in knowing.
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