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Jackal Pro IRRA legal Can-Am


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#1 Pablo

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Posted 19 February 2022 - 11:11 AM

This is what I have so far, a kit, a flag and a pinion; the rest of the parts are coming. This will be for the 12 March SERRA event at The Raceway in Cleveland, TN on the 131' flat track. For gearing I will have two CR102 motors set up, one with an 11T and the other with a 10

 

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Here is a Jackal Jay Guard built recently

 

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Jays Jackal 2.jpg

 

All I have to do is copy the masters, take their advice, use quality parts, and I'll be fine  :sun_bespectacled:


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Paul Wolcott





#2 gc4895

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Posted 19 February 2022 - 11:14 AM

These are swell chassis! Well designed, fun to build.
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Mark Bauer

#3 Tim Neja

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Posted 19 February 2022 - 11:33 AM

I"ve built two of these--they handle great.  Enjoy it.


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She's real fine, my 409!!!

#4 Racer36

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Posted 19 February 2022 - 11:47 AM

I have tried all kinds of chassis, but my Jackal Pro is still one of the best in the box. 


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Dennis Dominey

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#5 old & gray

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Posted 19 February 2022 - 12:55 PM

Unsolicited comment:

 

Dom has been running a GT Coupe in New England made with 4 rails of .039 per side. 


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Bob Schlain

#6 Pablo

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Posted 19 February 2022 - 11:21 PM

Thanks Bob, good advice from smart friends isn't "unsolicited" LOL

 

The kit parts came from the bag perfect, very impressive  :good:

 

CR 2 degree tongue and eight .039 rails of Swiss plated wire. WB 4", GL 15/16" 

 

Rail wires rough cut with ends champhered and parts all jigged up. Thanks for all the help and support  :)

 

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Paul Wolcott


#7 Pablo

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Posted 20 February 2022 - 01:03 PM

Precise notches on the CR tongue perfectly match the Jackal nose piece. Tacked, checked for true, placed a pair of solder pieces in the tongue slots, slathered the works in acid and went full bore with the FX-601. Worked fine

 

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I'm not sure what the hole in the nosepiece is for, but it gives me an indication the solder flowed sweet

 

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The nosepiece rail gap slots are about .188" wide. 4 x .039 = .156. I see Jay Guard added a "spacer" to fill the gap, so I'll do the same. .156 + .032 = .188

 

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Next step - .039 rail sandwiches  :to_become_senile:


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Paul Wolcott


#8 old & gray

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Posted 20 February 2022 - 01:44 PM

A hole in the nose piece -
a) a drill guide to put a piece of piano wire through the tongue to pin it in place.
b) alignment pin hole for a fixture that holds the brass during manufacturing
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Bob Schlain

#9 Bill from NH

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Posted 20 February 2022 - 04:04 PM

I've known & raced with Dom & his dad since 1996. Dom is very approachable with concerns or questions.

 

Bob, if that nose hole was meant for a piano wire reinforcement, there would have been a matching hole in the steel guide tongue also. But "b" is a good guess.  :)  


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#10 Pablo

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Posted 20 February 2022 - 07:08 PM

"CR" means "Chicagoland Raceway". It's not the stock tongue.


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#11 Dominator

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Posted 20 February 2022 - 07:29 PM

The hole in the nose is used for mounting a screw to affix the brass sheet to the milling plate.

Why only one screw hole? This is because the nose and pans each have a hole and the last part of the miling is to separate the three pieces.
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A motor is only as fast as the chassis it's in.
 
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#12 Pablo

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Posted 20 February 2022 - 07:46 PM

As a check to verify the solder flowed 100%, it gave me pleasure to look at that hole and see success


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Paul Wolcott


#13 Pablo

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Posted 21 February 2022 - 01:18 AM

Nosepiece fits like a glove with pins in the RGeo jig. Amazing how well this works - I'm just enjoying the ride. Rail sets are 5 Swiss wires - the middle one is .032. Tacked in for now

 

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Paul Wolcott


#14 Kim Lander

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Posted 21 February 2022 - 02:20 PM

looking great so far Pablo.



#15 Pablo

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Posted 21 February 2022 - 02:24 PM

Thanks Kim!

 

I like a strong rear end. A pair of gussets for the uprights, and I drizzled solder down into the manufacturing folds

 

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Solder fills the gap between rails and bracket bottom just right

 

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A pair of .039 wire pieces sit atop the .032 rails and run forward to meet the front end of the nosepiece for "redundancy insurance". Again, I drizzled solder down into the upright folds

 

IMG_1016.JPG


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Paul Wolcott


#16 Pablo

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Posted 22 February 2022 - 01:40 AM

Wishbone gizmo complete. Since this is for a flat track, I think it should be set up "loose" rather than "tight", so I used .055 wires. Basically just copying Jay Guard's design  :yes:

 

IMG_1028.JPG


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Paul Wolcott


#17 Dominator

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Posted 22 February 2022 - 11:07 AM

Looking good Pablo


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#18 Pablo

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Posted 23 February 2022 - 11:24 AM

Thanks Dom. Pan management bits are ready to go. Everything fits so perfect it's amazing

 

IMG_1029.JPG


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#19 Pablo

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Posted 23 February 2022 - 11:36 PM

Chassis done. Scrub brushed with Dawn, baking soda, and SOS pad. No tumbling, it's a racehorse. Tomorrow, assembly begins  :dance3:

 

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Paul Wolcott


#20 Pablo

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Posted 24 February 2022 - 05:48 PM

- CR102 broken in dry @ 5V for 15 mins, amp draw was about .5 and dead steady, as usual.

 

- 10T angled ARP pinion installed using a Swiss gizmo. I'm fairly skilled with pinions but the aluminum tool just makes it that much more foolproof. Bam, it's on and right where I want it.

 

- Jackal bracket hole required just a few swipes of a circular file to get the 10T through. It will require more hogging if I want an 11, but I won't do that until we test with the 10. It may even be better with a 9. We shall see.

 

- The big flat track likes soft wheels, so I glued natural rubber onto JK plastic small hubs.

 

IMG_1036.JPG


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Paul Wolcott


#21 John Luongo

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Posted 24 February 2022 - 05:57 PM

i like that pinion tool, its the nuts! i cut a slot down the middle of the motor brace the same width as the arm shaft. this helped the installation of large pinions.


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#22 Pablo

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Posted 03 March 2022 - 09:18 PM

A "burp" in the build caused a delay, my own fault. I'm back on track now, thanks to friends who coached me  :)

Make sure you use a jig motor before laying rails to the Jackal motor bracket. Onward .......

 

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Paul Wolcott


#23 John Luongo

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Posted 04 March 2022 - 04:30 AM

nice bracing, pablo



#24 Racer36

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Posted 04 March 2022 - 06:10 AM

Nicely done Pablo, but why no ball bearings?


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#25 Clyde Romero

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Posted 04 March 2022 - 08:49 AM

That was my question
Why no BB?





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