Slot It DTM Proxy Race

porsche917 porsche917 6 years ago

I am posting this to the club to discuss an opportunity we have to participate in our next proxy race with the Houston Scale Auto Racing club.  They are fans of our current Thunderslot Proxy race series and reached out to see if we would be interested in doing another proxy race with them.

In our September club meeting we discussed making the clubs upcoming Q4 series a proxy and the current proxy racers and marshals supported the decision and agreed to continue in their current roles so doing this proxy series with another club is not far outside the realm of what we were already planning on doing.    

The Houston club agreed with all the rules we currently use for our proxy which meant all we had left to do was to figure out what car would work best for everyone.  The Slot It McLaren was mentioned but none of the Houston members had one.  The limited availability combined with the limited liveries make this a weak choice so we looked at other options.  We know we wanted to run a Slot It car as they would be the easiest for members to tune.  We wanted to pick a current model that was readily available.  We wanted to pick a car that had multiple liveries.  All of these requirements led us to select the Slot It’s DTM cars.  This has the much added benefit of allowing us to get Dave Kennedy and Mauricio the owner of Slot It to help promote the series and provide the club with some fantastic publicity and maybe some new members. 

The big commitment for our members is in the purchase and tuning a new car.  Being a Slot It the design and construction of the car is familiar to all of us and understanding how to set it up should be easier for most everyone.  Some members have already purchased one knowing it was planned to be the clubs Q4 race this year.  I know that I have one, Ary has one, Randy has one and Mark has one.  The cars are readily available from multiple slot car retailers as well as eBay for $50 to $60.  The rules have a limited number of things you can do to the car so the expense of any additional parts should be minimal.  It should not be too difficult for members to get a car and set it up.  I would be willing to do the tuning work if a member wants to purchase a car and the parts.  Before buying a car please view the clubs forum on the DTM series for notes on what Alfa cars to stay away from. 

The first race would be held October 24th.  This gives us slightly less than a month to get a car ready.  The timing is not perfect but there’s not too much work to be done on these cars.  

I would like to see all the club’s members participate in what stands to be a great promotion event for the club.  Attached are the proxy race rules as well as the rules for the cars.  We will be discussing this at next club meeting on Saturday the 3rd.  I will also have this event posted to the clubs forum.  Please post any questions about the series to this forum for all to view. 

 FAQ’s

Where do the races take place?

The cars from our club and the Houston club would be raced at our track by our proxy racers and then be sent off to Houston where they would be raced by the Houston club. 

What does it cost?

The same race fee as it would normally be - $5 for premium members and $10 for basic members. 

What cars will be used?

We are going to use the Slot It DTM cars for this proxy series.  Why these?  In working to get Slot It involved we needed to run a car that is current and readily available from multiple There is some great information on the clubs 2020 Series Discussion on the club’s forum on our website.   

Will there be awards?

Yes.  Plaques will be awarded for this series just like they are for our other series. 

How do I set up my car for the Houston track?

One of the big parts of running a proxy race is not getting an opportunity to run all the tracks the races are held on.  The goal of setting up a proxy car is to get one to perform as smooth and neutral as possible.  We will get a list of popular set up tips from the Houston club so we will at least have some idea of how to get your car set up properly. 

Why do this?

I like to think the reason to do any slot car racing is to have fun.  No top of that we are doing it to build some exposure for the club.  See the FAQ below for more information. 

What is the benefit to the club?

Exposure.  We have been talking about how to attract more members and the need for more exposure to introduce the club to more people while showing the type of professional organization we run.  This proxy race will be promoted by both clubs as well as Dave Kennedy from slot car distributor Great Traditions and Slot It.  This type of press/publicity is not easy to come by and could help the club. 

What rules will we use?

We will use a slightly modified version of the rules that are published on the clubs website – Q4, 2020 race series.  I will post the rules as soon as we decide to move forward with the proxy series. 

How do you run a proxy race?

For anyone that has watched the clubs Thunderslot Proxy race series it is just like that with the exception of sending our cars off for three rounds of the series that will take place in Houston.  There are specific rules to running a proxy that I will post once we decide to move forward.

10

Clear enough. If my wing breaks during a race, please withdraw the car immediately. Make no attempt to repair/replace the wing. A broken wing means that race is over for the car.

The rear wing cannot be attached to the body - unless you are running a Mercedes and it comes that way. You can use the tried and true trick of putting ShoeGoo under the wing and on the struts. I would allow some reinforcement of the struts just as long as they are on minimal and on the struts.

Marty

Marty

The Alfa rear wing mount is pretty spindly; what is allowable for reinforcement? Can the ends of the wings be taped to the body? What about reinforcement with plastic?

Russell

Randy - based on what they communicated to me the stock C1 tires - PT1228C1 - tires are the ones that work the best on their track.

Guides - You could use the stock guide if you would like to save $5 or be spendy and get the Slot It CH10 which is the same guide with a screw mount.

I found the stock tires as 1228C1 on Electric Dreams, but not professor motor. One of the sites has the DTM for sale and has that great list of dimensions and parts. It says the stock tires are 1228C1 also. There are some other tires listed as C1, but I take it we use 1228s

All,

Here is information on the best set up for your DTM car on the Houston track.

Gears - 26 or 27 crown on the stock 9t pinion.
Tires - Stock C1's
Weight - helps, most are adding 5 -10g but in a variety of choice of placement.
Guide - Screw in universal pickup - CH10.

Picture or no picture, its good to hear you were able to make it work.  Can't wait to see the Mercedes on the track.

Marty

I know better than to try and edit a post now.

I had three pictures in this post, but only one, the least useful showed up. Sheesh...

I had mentioned some wood-guide clearance issues with ehe Marc 190. The wood guide is much squarer than the stock guide. Marty gave me the go ahead to remove m=some material did not take much. An X-acto on the guide cutout, and a dremel on the backside of the front valence, and we are free for running. The main culprits were two tiny vertical bits behind the license plate. I used the small Dremel sanding drum, the regular one would not fit between the mounting post and the backside of the front valence.

[attachment file="Guides-small.jpg"]

[attachment file="Guide in chassis-small.jpg"]

It is a tight fit

[attachment file="Body fit-small.jpg"]

Got it John.  Thanks .

Marty,

Would like to race as well.

Lotus Jr.

David - thanks for volunteering.  How many other members would like to race in the DTM proxy?  How many would like to be corner marshals?

I will volunteer to corner marshal and to do commentary.

Marty

Not sure how many drivers there is for DTM. I would like to race this time. I hope we have enough so we can rotate drivers and lanes.

[quote=15437]and more difficult TO USE without wobbling. Forum would not allow me to edit post. [/quote]

Unfortunately the current release of WordPress is finicky and inconsistent; esp. when adding either (a) an image or (b) a URL.  (I usually remove the https and www from URLs in order to add them to a post.)

Also - sometimes the browser affects what you can see.  I have stopped using Internet Explorer since it is so wonky with the ASCC site.

If you have additional issues contact Brian to work out the problem.

Marc - thanks for the ID of the upper holes.  Good idea on the tap.

I have discovered an issue with the Mercedes 190. When the deep wood guide is installed, it rubs against the back of a plastic insert on the body (inside of brake ducts) Is it against the rules to remove material from the insert, or the guide to ensure free movement?

and more difficult TO USE without wobbling.

Forum would not allow me to edit post.

[quote=15433]M2 Tap for “chasing” the threads for the Upper Axle Height Setting grub Screw
micromark.com/Metric-Tap
M2.0x40 #82321T $12.**

Normally, you would also need a Clearance drill bit, (such as creating a new hole for a fixing screw on a Wheel; yet based on experience, it’s easier and faster just to buy a new rim!)
For the Slot.IT Uprights a Clearance Bit is Not Necessary.
Likewise – a pin vise, or a few wraps of tape, is all you need as a holder/driver for tapping plastic.

[/quote]

Yes, a pin-vise works well. The traditional T-handle is overkill, and more difficult house without wobbling.

[attachment file="Tap.jpg"]

The plastic pin on the axle insert (the part we all remove) is 1.85mm. Under a mm, so running an M2 grub screw into that hole is most likely causing outward forces on the hole. Asking for a break in those delicate upper loops. If nothing else, the tap and pin vise give you a nice, true 'start'

[attachment file="Upper Loop.jpg"]

M2 Tap for "chasing" the threads for the Upper Axle Height Setting grub Screw
micromark.com/Metric-Tap
M2.0x40 #82321T $12.**

Normally, you would also need a Clearance drill bit, (such as creating a new hole for a fixing screw on a Wheel; yet based on experience, it's easier and faster just to buy a new rim!)
For the Slot.IT Uprights a Clearance Bit is Not Necessary.
Likewise - a pin vise, or a few wraps of tape, is all you need as a holder/driver for tapping plastic.

M2 Tap for "chasing" the threads for the Upper Axle Height Setting grub Screw
https://www.micromark.com/Metric-Tap
M2.0x40 #82321T $12.**

Normally, you would also need a Clearance drill bit, (such as creating a new hole for a fixing screw on a Wheel; yet based on experience, it's easier and faster just to buy a new rim!)
For the Slot.IT Uprights a Clearance Bit is Not Necessary.
Likewise - a pin vise, or a few wraps of tape, is all you need as a holder/driver for tapping plastic.

Slot Car Corner - rounded/oval head Grub.Allen screws for front axle setting.
slotcarcorner.com/collections/1-32-set-screws/products/scc-m2-x-5-0mm-set-screws-oval-point-black
Useful lengths are 5 and 6mm (8mm are typically extreme and add un-needed weight.)

UPDATE Current race date for Rounds 1-3 (at ATX HQ) are in the Google Calendar.
Oct 24,  Nov 7,  Nov 21

As Marty finalizes plans for the remaining rounds with HSARC the calendar will be updated.

Marc,

Great point.  I will list part numbers along with the descriptions in the future.

Slot It zero grip front tires:  17"-PT15 and 19"-PT07

Thanks for the input and good luck with preparing your car.

[quote=15425]Are we really running 14v as shown on the rules? Are we running the thin version of the Z front tires or the taller more scale like version?

[/quote]

Could you provide part numbers for these tires for those uf us who have not memorized the Slot.it catalog?

TIA

Randy,

The rules for the Proxy race state we will be running the series at 12 volts.  The rules for our 2020 Q4 series listed 14 volts but we are not using those rules.  We are using the rules for the Proxy.  Thanks for asking the question.

Front tires - you can use the 17" or 19" diameter versions of the zero grip tires.  It depends on how you are setting up your car.  You might find the 19" version easier to set the car up with.

On a side note - are you up for selling your Bosch Alfa?  I would like to purchase it if you are up for selling it.  Let me know what you want.  It would be great if you could leave the car at headquarters and I will come by with some cash to leave for you.

Marty

Are we really running 14v as shown on the rules?  Are we running the thin version of the Z front tires or the taller more scale like version?

A suggestion for proxy rules.

This should make the race manager's job much easier. Have entrants write their name (or handle) on the bottom of the car. With a bunch of unfamiliar cars, and new names, both in Austin and in Houston, It will be a great help keeping things straight. This has been a standard rule in all proxies I have entered. Besides there's much more room on the bottom of a DTM than there is a 60s F1 car :)

[attachment file="Naming.jpg"]

LINKS TO VIEW HOUSTON CLUB, TRACK
houstonscaleautoracing.com
facebook.com/groups/HSARClub
yelp.com/biz/scale-auto-racing-houston
Scale Auto Racing 11303 Jones Rd W Ste C, Houston, TX 77065-3641

CIRCUIT BOARD ON BLACK END BELL 21k DTM MOTOR
To remove the "shunt capacitor" - use a very sharp, small set of dykes/nippers to cut the circuit board on One side, Away from the end bell. If you cut too close to the end-bell and you may clip the Solder Tab coming out of the motor (connected to the brush inside). Don't cut the other side yet (doing so may flex the circuit and hence the solder tab.)
Now, de-solder the piece of the circuit connected to the solder-tab, carefully pull off the circuit board piece. Now desolder the circuit piece on the other side and pull away from the tab.
ALTERNATIVE: using a small set of dykes, you may be able to cut off the capacitor 'block' in the middle of the board - problem solved in seconds!
NOTE:  Some people like to take off the capacitors, but they should not really affect analog performance. They are "shunts" that short-circuit radio frequencies picked up across the motor's solder-tabs (which can act as an antenna). They are mainly effective to prevent any problems with digital systems (with retroactively installed chips for Carerra or Scaley tracks).

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