18 replies to this topic

[One_Track_Mind]

JK Sprint Car Kit

Being a huge Fan of Dirt Track racing and Sprint Cars, I finally got of my keester (inspiration from JHW) and built one of these JK kits I had lying around for awhile. I would have to say this was a very easy kit to assemble once all the parts were cut away from one another. Probably took me as much time to cut it all apart as it was to solder it all back together.






Onward to assembly, thought I would try my Rick's jig to make sure each side was squared to one another, but it was not to happen, the wheelbase did not align up with any pins to hold front and rear at the same time.



Was able to hold the rear axle in position in the jig, but then with the fine water cut or laser cut steel pieces it was really not needed as everything locked in place nice and tight.



Completed chassis along with wing mounts and body mounts installed.



Painted the chassis with some Krylon silver, and the body was a little difficult to get cut out properly but I managed to pull it off.



The wings were borrowed from a static diecast model. They just snap on over wire. During a crash hopefully they will fly off and not break?



Having never built one of these type of cars and not knowing what motor goes in them, I opted to dig into the motor pile box and selected a Super Wasp green wire motor. geared it at 12/46. The front axle hole mounts are elongated for some reason, so I elected not to solder the oilites in a particular position and just left it float up and down.

Completed car pics to follow:

Watcha think? Pretty neat, huh?

Thanks again to JK Products for another fun car to build.

[M. Lovelace]

Brian,

Nice job, is this 1/24 scale. What are the part numbers of the kit and body. Also what size tires will you use.

Thanks
Malcolm

[havlicek]

Really nice! I see this kind of thing and think about how Sci-Fi this would have seemd back in the 60's

-john

[One_Track_Mind]

Hi Malcom,
Yes. I believe this is a 1/24th chassis.

The Part # for chassis is JKCL106
and the body is JKCL6000B

Tires?...hhhmmmmm. not really sure?
I'm thinking that I have a pair of Hoosier tires for the front and was going to use and old pair of JK plastic rims for the rear.
Need this thing to slide sideways!

Will give further details on tire selection later.

ANYONE ever built one these in the past? Any set-up tips would be great for Malcom and myself.

Hey, John the sprint car of the 60's did look like they were from a Sci Fi movie!

[MSwiss]

Malcolm,
When I talk to Jerry today, I'll check if he still has any.

[Craig]

I wouldn't mind having one of these thing as well. I would never run it but I'd build it for static display.

[One_Track_Mind]

Malcolm,
When I talk to Jerry today,

Hi Mike,
Be sure and ask for any set-up info Jerry may have?
Thank You.

Also, JK does have them but are listed in the closeout section.

[MSwiss]

I just spotted that.
They look like a great deal for $17.

[Bill from NH]

According to the JK website, both are still available. The chassis is listed for $17 & the body for $3. Both are in the close-out section, so availability probably will be limited.

[One_Track_Mind]

so availability probably will be limited.

This is why I ordered a second chassis before I built the first one. and shared the build here with you guys.

[Larry Mattingly]

For those of us into sprint cars...

I recently had Wendell Veach upgrade two different versions of 1960's-era 1/24 sprint car bodies. One was from Lancer, not sure who made the other one.

Anyway, Mark Greene at Keystone Raceway currently has the new molds, and will soon be producing them for sale under his body company.

I would love to get a retro sprint class going on ovals. No roll cages needed, just some nerf bars and a roll bar...

Use current retro F1-type chassis, with tall (1" -1 1/8") 1/2" wide rear tires, and scale appearing fronts.

These things would be a ball...

If you are really into scale appearing sprint cars, check out the 1/32 cars they race in Central PA built off a modified Womp.

LM

[One_Track_Mind]

one_track_mind Completed car pics to follow:

This portion of the build I would have to say was the absolute hardest part, Cutting the body sides to clear around the chassis.
Trim a little, try to fit, and trim a little more until finally the rear of the body extended far enough back to look right and still be attached to the rest of the driver and hood. So essentially it's a one piece body but very flimsy in the driver area.The next body I will cut longer for the hood sides, so it covers a little more of the chassis.This particular body shown is cut on the molded cut line provided on the body.



Not having seen one of these sprinters built I'm not quite sure on the motor selection?.So, my way was to pick a motor that fit in the narrow 1" wide chassis and bolts to the motor bracket. That motor chosen has a green wire S.WASP tagged on the arm. 12/46 gears.
Oh!.and the second hardest part of this was to get the guide nut onto the Slick 7 flag!
not a chance for a nut driver here.






Hi Mark,
That's interesting roll cage and car you have shown. I believe it has finally answered my question what and the world this is?!




Although the front down tubes wires appear longer on yours? I kinda always had the inkling it was for a sprint car of some sort but it never matched up to, say a sprints plus chassis. I always felt it was indeed missing something?

[Kit Henry]

hey mark, Where would i be able 2 get a car like the one u posted? Thats really cool looking.

[Ramcatlarry]

If you like the spaceframe JK, you might love the torsionbar frame from JK that fits the same 4" body:
12521 built $39.95 ok slab kit 125212 for $22.00. We ran those with Falcon, but they can handle a lot more motor.

[Slotgeezer]

Great build, Brian !!

Love the painted body... & the wings look really sano !! .... I need to paint my build, like you did!

I too built one of these... about 15-18 yrs. ago, back when my Dad & I raced pro World 12 wing cars for fun ( World 12 laser-cut chassis, floppy hinged nose weights, for the track & braid "bumps" ... 5 x 5 Front Line wing kit on an Outasite Corvette body... Mura set-up w/ Champion or Mura magnets ... ProSlot, Champion, RJR, & Koford .513" dia. X-12 arms ... ball bearings everywhere & shunt wire & insulation on the motors... I sanded magnets & shimmed 'em to get a .530" air-gap... they ran fast & cool !! ) ...

I built my JK up, & modified it to have a "drop-arm", so the car would "wheelie" away from the starting point at the looong straight-away, & not drop down until you "lifted" for the bank on BP's old Hillclimb track !! LOL! ... Running a 3rd-version 2-hole Mura trapazoid-vent "C" can w/ a Challenger II arm in it, it was a great car to run... Still have it, along w/ the cars my Dad left me... You "punched" it, & it would INSTANTLY lift the front tires up off the track, just like a real sprinter !!! ... Running ProTrak 1" rears & 1/2" fronts sure made it look sano!!!

Thanks, Brian, for reminding me of how much fun that JK laser-cut sprint car is! LOL!


Jeff Easterly

[One_Track_Mind]

You "punched" it, & it would INSTANTLY lift the front tires up off the track, just like a real sprinter !!!

Hi Jeff,
WOW!...that sounds really neat...If by chance you get a free moment to take some pictures, this would be really nice to see.

thank for the kudos, the car was really FUN to build. It's my first one! but not my last one!

[Larry Mattingly]

hey mark, Where would i be able 2 get a car like the one u posted? Thats really cool looking.

Hey Kit

Mark must have missed your post...

contact him via PM.

I know he had 'rollers' available that were built by Randy Kohr.

LM