142 replies to this topic

[Pablo]

Ready for the body.

 

 

Passes the drivetrain test with flying colors.

 

 

[Pablo]

One final step - a dot of glue on the end of the axle:

 

 

Boop, second insert goes home and in perfect position. I don't even need to check it.

 

 

Go-Kart is done.

 

 

Time to get serious about a real job. 

[bluecars]

Hoping you don't get one that will make you work on the first Sat. of the month. LOL!!!

[Pablo]

Good idea, Red. Also, one that doesn't have me commuting directly into the sun both coming and going.  

[Pablo]

Job search: dead

Go-Kart track test: pretty good

 

Power and handling were excellent, but I plan to punch the flag further forward.

John Clow's TFlex with a Contender motor was much faster, and better handling.

[Bobby Page]

did this one awhile back

Attached Images

• 
• 

[Pablo]

Looks like you win Concours again, Bobby

[Pablo]

My solution to John Clow's Contender motor Go-Kart out-powering mine:

 

 

Stock PS 4002B arm ("Puppy Dog") comes out and in goes a Havlicek #28 AWG arm.

The H comm is about 10 thou bigger than the stock arm so brush platforms needed to be hogged out just a hair.

Otherwise, perfect fit and an easy installation.

 

She drew 2.7 amps at 3 volts, dropped steadily as the brush faces conformed to the bigger comm, and stabilized at 2.0 amps.

Runs perfectly smooth and cool. Sounds powerful enough to beat a Contender

Now the wheelbase needs to be punched out. Look out, John, I'm comin' for ya !

[Pablo]

The simplest solution to extending the wheelbase is swapping the existing Chicagoland tongue for a Slick 7.

Not that one is any better than the other - but the S7 is long and that's what I need.

 

 

Should be an easy operation, but it all depends on what falls off when I apply enough heat to do it

The S7 is 10 thou thicker (taller) so the forward plumber wires cross connector will have to be changed.

 

Now, where did I put that doggone spare bottle of butane ?

[Pablo]

Alligator clip party worked nice - nothing fell off except the tongue

 

[Dallas Jackson]

Pablo

You have to take care your live in baby.

[Pablo]

Tongue swap complete. I got lucky and nothing else fell off

 

[Bill from NH]

The front plumber cross connector could be replaced or you could grind a .010 groove for the old connector to fit in. Since the S7 tongue is not as wide, you could also use longer plumber hinge tubes for added strength. I come from the days when K&S piano wire was a nickel per foot, regardless of diameter.

[Pablo]

Concur on both - good ideas, Bill  But: 

-I chose to replace the .032 cross connector with a new .037 piece.

-The thought of making new (doubled) plumber hinge tubes occurred to me, and I chose not to. Heck, it's a Go-Kart, not a G7 

 

She's in the tumbler.......

[Pablo]

Wheel insert method worked fantastic, as planned.

No failure during track test, one insert popped right off upon axle disassembly, and a dot of new glue on the axle end for reassembly.

I'll be using this method on my vintage cars for sure.

 

[Pablo]

H arm in the stock PS 4002B setup is geared 7/35 with .675" OD wheels.

Center of rear axle to center of flag shaft is now 4 3/4" - same as a TFlex.

 

 

Track test #2 should be interesting

[Pablo]

Track test # 2 results:
- Lengthening the wheelbase greatly improved the handling.    Much, much better. It was out-handling the TFlex Go-Karts easily.

- H arm gave the PS 4002B motor the extra beans it needed to keep up with the "Go-Kart motor wars." 
 
In multiple impromptu drag races down the straightaway against a G12 (box-stock) motor Kart, it was dead even every time.
 
Handling-wise, it walked off and left them behind. Mission accomplished.

[Pablo]

Billy Watson made a better go-kart body that covers the flag.
 

[Bill from NH]

Do you guys race a go-kart class at Billy's? Or do a few guys have them to run around during spare moments?

[Pablo]

Correct. But, there will be a go-kart race scheduled for 7 April.
I'll be announcing it later today.

[Bill from NH]

About fifteen years ago, I saw a Brunswick, ME raceway (Slots of Fun) running JK go-karts on their American Black track. I believe these were 16D powered flexis, but they looked like a lot of fun. At one time, JK made a snowmobile body too. Billy would get a kick out of those.

[Pablo]

The Watson body is better in every way, IMO

 

[Pablo]

Looking for more speed to keep up with Bud Greene's kart.

He used an X12 motor to beat me last month at The Dungeon's Go-kart race.

 

So I dug one of my X12 Pablo built motors out of storage, tuned 'er up, installed a new pinion, and away we go. The arm is tagged "12", one stack hand engraved ".518", "Koford" on the next, "46" on the third.

 

 

Mags honed at .538, draws 2.75 amps at 3V under breakin, runs dead cool temp.

Bud opened the door, I am simply walking through it

[Bill from NH]

The 46 probably indicates degrees of timing. How long before someone shows up with a Grp. 20?

[Pablo]

I showed the timing just to scare Bud