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Cycle kart rack and pinion

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Woodysrods Brian Woods
Westbank B.C., Canada   CAN
In reply to # 26629 by CmdBentaxle Your second? Would this be for the belly tank or are you not so sure how the
first will last?
Yes Dave, I have faith in the rack and do not anticipate its failure.
Parts are being stock piled for build # 2............bought tires yesterday!smiling bouncing smiley
Moving forward each day on build #1 as well. Painted front axle, leaf springs and rear hubs yesterday.
Fake brake drums today.
Eating the elephant one bite at a time.
Woody
PS
Build # 2 won't be started until build # 1 is totally completed.

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Can Do 2 Mark Henderson
Mason, IL, USA   USA
Nice job Rick! Do you have the link for the Rack and Gear?

1908Rick Avatar
1908Rick Rick Eggers
Cape Coral, FL, USA   USA
1900 Ford Model 01 "Quadricycle"
1908 CycleKart Vintage "Lizzy"
1908 Harley-Davidson Pre-War
1965 AC Cobra    & more
The pinion I used is this.
http://www.ebay.com/itm/BOSTON-GEAR-STEEL-ND-16B-SPUR-GEAR-12-PITCH-5-8-BORE-FOR-LATHE-MACHINE-ETC/332325902398?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

I cut off the hub so it fit between the aluminum plates.

The gear rack is 3/4 x 3/4 and has a 14 1/2 degree pressure angle and a #12 Pitch. You just have to look around on ebay. There are several to be found. You need about six inches of rack to have enough travel.

Rick

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Can Do 2 Mark Henderson
Mason, IL, USA   USA
To invert this and have it steer correctly you could add a second gear and the size would also dictate the amount of turn for complete travel. Great work Rick!

Can Do 2 Mark Henderson
Mason, IL, USA   USA
Thanks

Alabama lead foot Avatar
Alabama lead foot Craig Ellis
Marbury, AL, USA   USA
Beautiful job Rick, I want one for my build! The slower ratio will be a must as I plan on more hp than gittreville allows- it's a bit far from 'bama to go play with those guys. And I can always dial back the power when we get some clubs here in the east. Let me know how much and I'll send you the $. Thanks, Craig

Can Do 2 Mark Henderson
Mason, IL, USA   USA
Thanks to Rick's inspiration I have made the 2 gear version of this to invert the rack to prevent dirt build up. This has 2" of travel per half turn. I have since removed the last 3 teeth on each end and drilled the rack for the tie rods. The shield has been tack welded to the back plate. This mounts from the bottom bolts. The White material is Urethane machined to keep the rack properly aligned and spaced on both sides of the rack gear. The shafts have been drilled out and ported to grease the bushings and gears.



Edited 1 time(s). Last edit at 2017-12-18 09:23 PM by Can Do 2.

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Little French Avatar
Little French Silver Member Fabrice B
PUY DU LAC, Charente maritime, France   FRA
Hello Mark

I did something similar
But why 2 sprockets? the direction will be "reversed" In this case it is necessary that the pivot arms are towards the front of the wheels ...confused smiley
Maybe I did not understand your concept....

Fabrice


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Denny Graham Silver Member Dennis Graham
Sandwich, IL, USA   USA
1950 Chevrolet 3600 "Old Blue"
1954 Chevrolet 3600
Where......do......you, come up with all that neat cool stuff Fabrice???????
Like those 360° tie rod ends.
dg

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Woodysrods Brian Woods
Westbank B.C., Canada   CAN
In reply to # 28016 by Denny Graham Where......do......you, come up with all that neat cool stuff Fabrice???????
Like those 360° tie rod ends.
dg
I was just thinking the exact same thing.
Brian

Little French Avatar
Little French Silver Member Fabrice B
PUY DU LAC, Charente maritime, France   FRA
Hi Dennis,
Hi Brian,

These accessories are easy to find with us. axial ball joints



Edited 1 time(s). Last edit at 2017-12-19 02:21 AM by Little French.

Can Do 2 Mark Henderson
Mason, IL, USA   USA
Fabrice,

I didn't want to have the spindle arms towards the front. This was more of a desire to see what could be done with the 2 gears and simple machining. Nice job!

Merry Christmas to All,

Mark

Little French Avatar
Little French Silver Member Fabrice B
PUY DU LAC, Charente maritime, France   FRA
Hi Mark,

You choose to use this steering box for your CK ??

Denny Graham Silver Member Dennis Graham
Sandwich, IL, USA   USA
1950 Chevrolet 3600 "Old Blue"
1954 Chevrolet 3600
Thanks Fabrice, searched for several hours for a source in the states but didn't have any luck.
Ended up in the UK at WDS components.
I assume you used 8 mm ball joints on that rack of yours?
The next smaller size was 5 mm which seemed a bit to light for
the karts.

Very much like a rack made by Kaz Technologies out of
Mooresville,North Carolina USA
http://www.kaztechnologies.com/portfolio/steering-rack/
It is built for use in NASCAR type race cars but still only weighs
3 lbs (1.4 kg)
It would be a little more involved to make compared to the one
that you have made.
I like it's design because the outer ends of the rack is bushed
and sealed to keep dirt out of the gearing.
DG

Woodysrods Brian Woods
Westbank B.C., Canada   CAN
That is a cool R&P Denny.....but Pricey!
This is the ones I use:
https://www.ebay.com/itm/11-Thin-Line-Stiletto-Style-Rack-Pinion-for-Lighter-Weight-Buggies-Sand-Rails/192091170507?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
More in keeping with our overall budget target.
Brian

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