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Backtrack "2 True" Heavy Duty Dual Tire Truer


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#91 MSwiss

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Posted 21 July 2013 - 08:53 AM

The urethane tires trim no different than sponge. One thing that's keeping me from giving it a big thumbs up is that it seems that on my unit at least the stub axles seem a little larger than 3/32 in making it vary hard to take the wheels on and off. In fact I thought my Pro Track tires were stuck for good

When I calibrated your unit, I used JK tires and they went on and off easily.

 

The problem is 3/32" wheels vary quite a bit.

 

If Geary's axle guy  makes them to fit the smallest / tightest ones, guys who use primarily ones with a bit looser bore,

will complain that they are getting wobble.

 

I just tried a 1/32 Slot-it wheel on all the units I haven't shipped, and they go on easily, and are on the verge of being loose.

 

You just have to dress it down to fit the tightest tires you are going to use.

 

Especially if use forced on some rims, you probably galled the axle a bit and need to clean the aluminum off.

 

Turn the unit on and wrap something close to 240 sandpaper on the stubs and dress them down a little at a time, until the tightest

of the wheels you use, will slip on.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.





#92 Dennis David

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Posted 21 July 2013 - 09:42 AM

I'll try that. All my wheels are tight.

 
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#93 MSwiss

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Posted 21 July 2013 - 10:12 AM

Like I mentioned, once you put on one that is tight, you gall the axle.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#94 Dennis David

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Posted 21 July 2013 - 10:24 AM

That's exactly what happened. Been a while since I learned a new word. I'll have to thank you for that one. I never dreamt that an axle could get irritated. I'll smooth it over with some flowers. LOL

Off to the store to pick up some 220 sandpaper.

 
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#95 Dennis David

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Posted 21 July 2013 - 09:50 PM

Used the sandpaper and now they slide on and off without any wobble. I've trued Urethane Fronts and rears and it works great. For 1/32 doing two tires at the same time is the way to go.

 

Plus the unit is smaller than you may be lead to believe.


 
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#96 MSwiss

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Posted 22 July 2013 - 10:46 AM

Dennis,

I'm glad you got that straightened out.

 

But it's a good segue to point out to everyone that 3/32" tires vary a few .0001"s from company to company,

and to not force tighter ones on the stub.

 

Just sand them down with something like 220 grit sandpaper.

 

You can use a finer grit, but it will obviously take longer.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#97 Bernie

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Posted 22 July 2013 - 11:45 AM

When I run into a tight fit I just run the 3/32 reamer through the hub and problem fixed. No fuss, no muss :)


Bernie Schatz

#98 MSwiss

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Posted 22 July 2013 - 11:47 AM

When I run into a tight fit I just run the 3/32 reamer through the hub and problem fixed. No fuss, no muss :)

That is a solution, but one I would not do, if the tire fits on the axle on car.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#99 MSwiss

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Posted 22 July 2013 - 11:06 PM

That's why the extra ones to give me some presets like 19.5mm, 21mm and 25mm ;-)

Dennis,

I may of already mentioned this, but if you missed it, in the little bit of playing around I've done with mine,

I've found what works well, and quickly, is to take the time to get the preset real precise for the smallest

size you plan to cut regularly, and then use shims to cut larger sizes.

 

IOW, in the pic below, using that .032" brass shim. will give me a tire approx. .064" or 1/16th" larger in dia.

than what I was cutting without it.

 

In your case, with the above scenario, you would have your preset to cut 19.5mm.

 

You would insert a shim approx. .75mm for your 21mm tires and an additional/second 2mm one for your 25mm.

(or of course a single 2.75mm)

 

100_9862.jpg


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#100 James Wendel

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Posted 22 July 2013 - 11:20 PM

I think that I would mark the shims with the finished tire size, but hey, that's just me.   :)


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#101 Dennis David

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Posted 22 July 2013 - 11:26 PM

Maybe I could get metric shims.

 
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#102 MSwiss

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Posted 23 July 2013 - 12:36 AM

I think that I would mark the shims with the finished tire size, but hey, that's just me.   :)

That was just a demonstrator shim. LOL

 

 

Maybe I could get metric shims.

In the case of the 3/4mm, something like K & S .025" with some tape on the bottom might work.

 

For 2 MM, I'm pretty sure K & S now sells brass strip in that thickness.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#103 Mike K

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Posted 23 July 2013 - 12:48 AM

How about using a set of points feeler gauges?....a whole set can be purchased for about $3.00 at the auto parts store and they are as precise as you can get with as many different thicknesses as you would ever need.


So much DRAMA for such small cars....
Mike Kravitz


Don't DQ me for having the wrong SHADE of orange on my McLaren... after all, it's ONLY a toy car!!!

#104 MSwiss

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Posted 23 July 2013 - 01:09 AM

Sounds like a great idea.

Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#105 Dennis David

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Posted 23 July 2013 - 02:34 PM

What are points? LOL

 
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#106 MantaRay

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Posted 23 July 2013 - 02:55 PM

these are from sears

feeler gauge.jpg

 


Resident Curmudgeon
Ray Price

#107 Mike K

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Posted 23 July 2013 - 05:52 PM

I have a smaller set about 2 inches long that I keep in my slot tool box that might be handy to use under the stop.

Pull out the one(s) that you need from the pack and label for the desired tire diameter...??? Just a thought....


So much DRAMA for such small cars....
Mike Kravitz


Don't DQ me for having the wrong SHADE of orange on my McLaren... after all, it's ONLY a toy car!!!

#108 MSwiss

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Posted 24 July 2013 - 12:36 AM

Yeah, Mike.

I bought a set from AutoZone today, for $6.99,  that looks a little shorter than what Ray posted.

 

They are approx. 1/2" wide, same as the K & S brass pc. in post #99.

 

I have a set laying around somewhere, I got years ago, to snag the thin ones to use to "slice"

the back motor solder joint, when taking out (mostly) cobalt motors.

 

Thinking about it, using them would be a good alternative for "normal" tire truers like Hudy's, if you didn't have a Knob Job,

or if you have an old WrightWay, like I do.

 

Like with the Backtrack, lock your hard stop at the smallest diameter you think you'll ever use, and add shims for the bigger diameters.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#109 kvanpelt

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Posted 24 July 2013 - 09:34 AM

 

 

Thinking about it, using them would be a good alternative for "normal" tire truers like Hudy's, if you didn't have a Knob Job,

or if you have an old WrightWay, like I do.

 

Like with the Backtrack, lock your hard stop at the smallest diameter you think you'll ever use, and add shims for the bigger diameters.

 

This method would be endorsed by JK Jerry, " Good for business". :D

 

I know I would forget and true that nice new pair of retro tires down for my eurosport car.


Kevin VanPelt

#110 Mike K

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Posted 24 July 2013 - 10:38 AM

 

 I know I would forget and true that nice new pair of retro tires down for my eurosport car.

 

 

Been there, done that........ :dash2:


So much DRAMA for such small cars....
Mike Kravitz


Don't DQ me for having the wrong SHADE of orange on my McLaren... after all, it's ONLY a toy car!!!

#111 MSwiss

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Posted 03 August 2013 - 03:51 PM

Here's the reply, word for word, from top Eurosport racer, Herman James, when I asked him how his 2 True was.

 

Great product.

 

Not a commercial tire cutter.

 

But great for re-truing and fine tuning which is what I initially wanted.

 

I can re task my power supply now.

 

I did remind him with the coarse drum, large diameter donuts cut quite quickly, especially with some larger thickness, smaller circumference

belts (O-rings) that be purchased at your better hardware stores.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#112 MSwiss

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Posted 11 August 2013 - 05:41 PM

Geary came by to bring some jigs and brackets (the next batch of 2 Trues are about a  week away), and play slot cars.

 

So I took advantage of the extra hands show how my 2 True, with an optional $26 coarse wheel on one side, and the "stock" finer wheel on the other side,

is making my life easier making my RTR BB fronts, with having to cut down my super-hard rubber, down from about an 1" in dia.

 

I don't think we'll get any Oscars for cinematography, but here you go:

Attached Files


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#113 Samiam

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Posted 11 August 2013 - 11:48 PM

Mike,

 Is there any reason you don't do two at a time?


Sam Levitch

#114 MSwiss

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Posted 12 August 2013 - 11:45 AM

Mike,

 Is there any reason you don't do two at a time?

Because I was doing production work, with 2 different grit wheels, cutting an approx. 1" dia, super-hard donut down to about .770",

not trimming a set of .835" out of the tube tires, to .820" or some other similar dia.

 

I added some additional text in that post #112, to indicate what I'm doing , without having to click on to the movie.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#115 Samiam

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Posted 12 August 2013 - 08:45 PM

Mike,

I meant Two at a time at each side. I thought with a narrow front this would be possible.

 

Any plans for an AC single ?


Sam Levitch

#116 MSwiss

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Posted 12 August 2013 - 09:36 PM

While the axle stubs are way longer than a Hudy, they aren't nearly long enough for 2 of my BB fronts, or even JK fronts.

 

No plans on an AC single.

 

With all the heavy duty parts on the 2 True, like the 3/8" dia. drum shaft, a single, while saving space, would only save about $30-$50

on the price.


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#117 MSwiss

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Posted 24 August 2013 - 06:10 PM

While I had it "apart", to try a coarser wheel, to do the rough cut on my super-hard BB F1 fronts,

I thought I would take a quick pic to show the nice knurling on the drum that holds the sanding band so nicely.

 

To take off an old band, expect to have to unroll it at the seam/ ruining it.

 

But if you're putting a new one on, it's probably because the old one is shot.

 

IOW, if you plan to change grits, invest in the $26 for the replacement drums, and you can quickly

flip from one coarseness to another, with a quick turn of a set-screw on each drum.

 

The new band pressed on perfectly.

 

Thanks to all for their patience, while Geary finishes up batch #3 of these.

Attached Images

  • 100_0028.jpg

Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#118 compman25

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Posted 03 September 2013 - 07:59 PM

This is my 1st tire truer and like that insurance ad says "it's so easy a caveman could do it". It's simple to use and very convenient not have to hook up to a power supply. Really happy with its performance.


Mike Nelson

#119 Dennis David

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Posted 03 September 2013 - 09:09 PM

I use mine all of the time. I probably use it as much on my front tires as I do on my rears.

 
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#120 MSwiss

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Posted 03 September 2013 - 09:21 PM

Do you see a performance improvement, as far as lap times, or does the car just run smoother ?


Mike Swiss
IRRA® Components Committee Chairman

Eight-time G7 King track single lap World Record holder
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990) 

Chicagoland Raceway
17B West Ogden Ave
Westmont, IL 60559
(708) 203-8003
 
mikeswiss86@hotmail.com  (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.






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