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SevenTurbanBourban Avatar
SevenTurbanBourban Christobal Welchissimo
Auburn Hills, MI, USA   USA
1934 CycleKart Custom "Type-69"
1938 CycleKart Race Car "Rotten Tuna"
Sorry I double checked my ID of the hubs and they are 34.5mm. So 35 essentially. You are correct. If you try to press fit the 37mm they probably will work with the soft aluminum hubs.

cw



Bugatti Type-69 build page http://www.cyclekartdesign.com/



Edited 1 time(s). Last edit at 2012-11-28 07:39 PM by SevenTurbanBourban.

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smcameron Stephen Cameron
Santa Clara, CA, USA   USA
This site seems to think the 1979 Honda CT90 bearings are 37mm OD, 12mm ID, 6301-2RS

http://www.jcwhitney.com/individual-wheel-bearing-and-seals/p2017247.jcwx?filterid=d57542y1979j1

Maybe they changed over the years?

-- steve

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SevenTurbanBourban Avatar
SevenTurbanBourban Christobal Welchissimo
Auburn Hills, MI, USA   USA
1934 CycleKart Custom "Type-69"
1938 CycleKart Race Car "Rotten Tuna"
Actually my caliper was incorrect, i remeasured and it's 37mm sorry for the confusion guys.

cw



Bugatti Type-69 build page http://www.cyclekartdesign.com/

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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
I finally got a rountuit and did some work on my wheels. All the woodworkers out there will reconize the first pic.

In the second one I used my backsaw to trim the inner portion of the wheel hub, funny how woodworking tools are great for machining aluminum.

The third shot shows the inner part of the hub after I trimmed it down with the router.

The forth shows the plate that will be bolted through to the axle hub. I'll paint it with some alloy paint after the holes are made.



S'all for now!


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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
Now the question is, on the inside of the wheel hub, how much of the inside do I trim out? Or, more importantly, how thick is the nut? I don't have the axle and nut yet to be able to check.



S'all for now!


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SevenTurbanBourban Avatar
SevenTurbanBourban Christobal Welchissimo
Auburn Hills, MI, USA   USA
1934 CycleKart Custom "Type-69"
1938 CycleKart Race Car "Rotten Tuna"
The nut I used for the 5/8 axle was smaller than the bearing flange, but with the 3/4 not sure. Funny story, I bought two seemigly identical front wheels, but turns out one was 35mm ID and the other was 37 ID. Bizarro x 11. Bring calipers with you to the cycle/moped salvage place cuz not all dem wheels is similars.

You could always use washers to get you outside of the flange, I think that's my solution.

Question, is that a steel 'face' plate sitting on top? Did you spin that on a lathe? It's pretty perfect!

cw

p.s. nice work!



Bugatti Type-69 build page http://www.cyclekartdesign.com/



Edited 1 time(s). Last edit at 2012-12-10 01:39 PM by SevenTurbanBourban.

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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
CW, that is a steel plate. It was cut on a plasma CNC. I got it cut at 4 1/2 inches, which was a tiny bit too big. I resized it with my highspeed sander.



S'all for now!

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SevenTurbanBourban Avatar
SevenTurbanBourban Christobal Welchissimo
Auburn Hills, MI, USA   USA
1934 CycleKart Custom "Type-69"
1938 CycleKart Race Car "Rotten Tuna"
So I figured out that the CT90 Trail-90 hub is 37 mm ID and the C-70 Passport hub is 35mm. These 1623-2RS bearings are 34.925mm and fit perfectly. But again buyer be wary, these are different hubs that look almost identical.

So in the process I learned that the ideal no stress hub/axle/bearing combo is:

  • C-70 'Passport' front wheel (hub)
  • 5/8 universal go-kart axle
  • 1623-2RS bearings

cw



Bugatti Type-69 build page http://www.cyclekartdesign.com/

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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
I finally got my rear axle and chain sprocket, now I can map out where the engine and wheels will go. I plan on making the cart fit the back of my truck so the over all length can't be more than 96". Tell me about the front axle placement, is there a certain way the axle goes on, such as fore or aft of center or do you just center it?



S'all for now!

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SevenTurbanBourban Avatar
SevenTurbanBourban Christobal Welchissimo
Auburn Hills, MI, USA   USA
1934 CycleKart Custom "Type-69"
1938 CycleKart Race Car "Rotten Tuna"
It's a matter of determining your front suspension if any. If by centered you mean fore aft placement that sounds wrong...I would recommend placing ur front axles as far forward as you can. Also make sure you get ur clutch before you commit to cross car engine placement, the jack sprocket isn't on a convenient place in most cases. We are going w a gtc 1004 tav2 because the angle of the chain can be whatever. A lot of tav setups position the sprocket under the engine in a side view

Cw



Bugatti Type-69 build page http://www.cyclekartdesign.com/

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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
My front suspension is a leaf spring mounted in line with the cart. The clutch thing, I already have worked out. The engine will be mounted midship because the body work and the rear tires all run flush across the back, at the very worse the engine will be over the axle. To get proper spring action, should I place the front axle ahead of the middle of the leaf spring?



S'all for now!

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SevenTurbanBourban Avatar
SevenTurbanBourban Christobal Welchissimo
Auburn Hills, MI, USA   USA
1934 CycleKart Custom "Type-69"
1938 CycleKart Race Car "Rotten Tuna"
It's advisable to put ur axle in the middle of the front leaf but I have seen as much as a 4 inch offset

Cw



Bugatti Type-69 build page http://www.cyclekartdesign.com/

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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
Well, I got a couple hours into the cart today. Worked on the rear wheels, drilled out the hubs and the outside plates, Test fitted all the machine work, I think it turned out pretty good, what do you guys think? I marked the hubs before drilling to get everything to line up afterward.



S'all for now!


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DavidMGA1600 Avatar
DavidMGA1600 David Lake
Gold Coast, Queensland, Australia   AUS
1960 MG MGA "Dads Car"
1961 CycleKart Race Car "Team Ferrari"
Victor,

That is some beautiful work you have shown above. (Especially like your garage carpetsmileys with beer)

In regards to the axle location and caster refer to this previous post. Something to consider.

http://www.cyclekartclub.com/phorum/read.php?2,204

David



David

1960 MGA 1600 Convertible,
Gold Coast, Australia.

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carChips Avatar
carChips Victor Harnish
Kelowna, BC, Canada   CAN
1933 MG Magnette
1973 Triumph Spitfire 1500 "Chip"
1989 GMC Sierra 1500 "Bush Truck"
David, that thread doesn't quite explain my question. Seeing I have the dreaded one eyed slipper spring, I'm going to put the spring slightly ahead of center. That way the rebound of the spring will be from the back where the slipper will be.
It's nice to be able to work in a carpeted cellar, I have a bench, desk and a bunch of clutter down there all for my building pleasure.



S'all for now!

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