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Duffy's Retro Challenge - July 25-27, Evans, CO


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#26 Matt Sheldon

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Posted 21 July 2025 - 12:03 PM

Hello everyone,

 

My apologies for the long pause with responding here. Been a crazy year for Leslie and I and we are both so excited for this coming weekend. 

 

Here is the itinerary for this week. 

 

Raceway hours

July 23 (Wed) - Raceway open 12 PM - 9 PM ($10 pit pass)

July 24 (Thu) - Raceway open 10 PM - 10 PM ($10 pit pass)

July 25 (Fri) --- Raceway open  9 AM - midnight (no pit pass for racers)

July 26 (Sat) -- Raceway open  7 AM - 10 PM (no pit pass for racers)

July 27 (Sun) - Raceway open  8 AM - 5 PM (no pit pass for racers)

 

Racing classes and dates

July 25 (Fri) - Retro 4.5" Stock Car tech opens at 5 PM, qualifying to start by 6:30

July 26 (Sat) - Retro Coupe FK (hand-out motors) motors handed out at 7:30 AM, tech opens at 9:45 AM

July 26 (Sat) - Retro F1 tech to open within 1 hour of GTC completion

July 27 (Sun) - Retro Can-Am tech opens at 9:30 AM

 

Entry Fee's

Stock Car, F1, & Can-Am - $15 per class

Retro Coupe FK - $33 (includes 1 handout motor). Additional motors will be available for purchase.

 

We are running both GTC Pro and Amateur. Both will be a hand-out motor. If six or more pros attend, then we will run them separate. If not we will combine both and score them separately. We have awards for both divisions.

 

Track thus far has been crazy good.

 

Braid depth is around .060" due to the braid that was removed being almost three times thicker than what is available today. Do not fear, a .032" brass spacer and .010" spacer seems to be the magical spacing for most chassis. We have plenty of the spacers. We would advise against using the Mid-America weighted guides unless you narrow them. There are a couple tight corners where we have seen them bind unless you sand them.

 

Track power is preset at 13.6 - 13.7.

 

If you arrive early Monday or Tuesday and want to stop by, let us know as one of us will be there putting the finishing touches on everything. 

 

We are making dust one last time this evening, cleaning the track Tuesday, and gluing it by Wednesday morning. Each lane will have 100 break-in laps on them by the time the track opens Wednesday at noon. 

 

If there is anyone on the fence about coming, and possibly needs a place to stay, we might be able to help. No promises, but there are possibilities. 

 

If you need anything, have questions, you can call me. I am slammed with my normal career, but if you leave a message, I will call you back. 

 

Matt

(262) 844-3178


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Matt Sheldon

Owner - Duffy's SlotCar Raceway (Evans, CO)





#27 Matt Sheldon

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Posted 28 July 2025 - 02:17 PM

Good afternoon. I will have full race results posted here Wednesday July, 30. I have had issues with being able to log onto the site for months via my desktop for some reason and again today. Seems to work OK from my phone.


Matt Sheldon

Owner - Duffy's SlotCar Raceway (Evans, CO)


#28 Cheater

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Posted 28 July 2025 - 06:14 PM

Matt,

 

If you will contact me, I can almost certainly fix your desktop log-in problem

 

The fact that you can access Slotblog via your cellphone shows it is a local problem with your desktop.


Gregory Wells

Never forget that first place goes to the racer with the MOST laps, not the racer with the FASTEST lap


#29 Jay Guard

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Posted 29 July 2025 - 01:42 PM

I had a great time at Duffy's Retro Challenge race and just wanted to add a few comments from my experiences at the race.

 

The race procedure was handled very efficiently and concours judging was handled in the best manner I've ever seen as the free lane stickers were handed out with a chit to use for voting, super simple and it worked perfectly.  Once the very thorough and fair tech got underway things went smoothly and proceeded as quickly as possible without a lot of waiting in-between, which is of course critical for an event of this size (32+ drivers and 130 entries).

 

There was plenty of pit space all with large power strips.  The track was fast and smooth for the most part but there were some bumps in the middle of the straight which didn't seem to cause a problem.  There were a few cars that launched in the banking (I was one of those "lucky ones") but I believe it was due to the cars being damaged rather than an actual track issue.  There were also some power surges, and Matt agreed and said he would probably be replacing the power supplies so that should be a non-issue going forward.

 

The food that Leslie (and her helper) prepared was not only very tasty but there was a huge quantity of everything, nobody went hungry the whole weekend, in fact quite the opposite!  There were an incredible amount of door prizes, many of them quite expensive, and very nice trophies were handled out for the top 8 finishers in each race, for concours, and a large cash prize for the three overall points totals drivers. 

 

In addition Duffy's has without a doubt the largest parts departments I've ever seen and I've seen a lot of them.  A couple of times I actually challenged Leslie to see if they had a totally obscure tool item (for example a Magnehone diamond brush hood tool) and sure enough they had each one, just amazing!


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Jay Guard
IRRA Board of Directors (2022-Present),
Gator Region Retro Racing Director (2021-2025)
SERRA Co-Director (2009-2013)
IRRA BoD advisor (2007-2010)
Team Slick 7 member (1998-2001)
Way too serious Retro racer


#30 Clyde Romero

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Posted 30 July 2025 - 09:23 AM

Everything Jay said was spot on.
I have never seen a parts department as stocked as this place!
It was incredible. Definitely going next year.
 
As for the race, it was like the Fall Brawl without the pressure.
 
Clyde


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#31 Bridgehampton66

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Posted 08 August 2025 - 09:51 AM

Hello Matt, Leslie, and all,

 

Congratulations on a well-run event. These are really fine reviews!

 

Could you point me to web location where we can the results, and a race report if that's complete?

 

Thank you for having the dream, exerting the effort, investing the time, to make this what it's become.

 

All the best!


Rob Hayes

Catfish International (HO) Speedway - The Brystal Catfish

Modelville Hobby and NERR - 1/24

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#32 Jay Guard

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Posted 08 August 2025 - 11:32 AM

Rob: Check out this Slotblog thread for full race results.

 

Duffy's Retro Challenge results - Jul 25-27, Evans, CO

 

I believe there are more photos on the Duffy's Raceway Facebook page.


Jay Guard
IRRA Board of Directors (2022-Present),
Gator Region Retro Racing Director (2021-2025)
SERRA Co-Director (2009-2013)
IRRA BoD advisor (2007-2010)
Team Slick 7 member (1998-2001)
Way too serious Retro racer


#33 Bridgehampton66

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Posted 13 August 2025 - 07:34 PM

Thank you, Jay!

 

Hello Matt and Leslie,

 

Has the 2026 Retro Challenge date been chosen?  Need to work the logistics

ASAP.  


Rob Hayes

Catfish International (HO) Speedway - The Brystal Catfish

Modelville Hobby and NERR - 1/24

MARC/New England - HO

https://www.berklee....ple/rob-hayes-0


#34 Dominator

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Posted 13 August 2025 - 07:50 PM

Thank you, Jay!

 

Hello Matt and Leslie,

 

Has the 2026 Retro Challenge date been chosen?  Need to work the logistics

ASAP.  

July 23-26 2026.  

 

Matt has it posted on his FB page and the dates are also listed on the IRRA website


A motor is only as fast as the chassis it's in.
 
Dominic Luongo
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NERR photos from 2016 to now


#35 Bill Seitz

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Posted 14 August 2025 - 06:52 PM

Duffy's have established a YouTube channel since this event and posted the event videos there as well as future race event videos:

 

@Duffy'sSlotcarRaceway







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