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ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Mon Mar 12, 2018 6:52 pm
by steveST100
Few people have asked about the wheels on the ST and CF so thought i would put this bit together.
Some of the 3 and 4 spoke wheels i have for some of the bikes i'm building.
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4 spoke wheels.
4 spoke front.
The 4 spoke was used on the ST50/70 in both 6v and 12v and the CF50/70 only in 6v.
Brake side,note the plate is on the left side and has screw on speedo cable.
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Inside of hub and brake plate with the speedo drive in place.
Note upright tabs on the drive and slots in the hub.
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Speedo drive.
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4 spoke rear.
Brake side.
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Inside of hub with brake plate.
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Sprocket side.
Crush drive rubbers and rear sprocket removed.
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Seal and spacer and you can see the groove for the C-clip that holds the rear sprocket on.
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steve g

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Mon Mar 12, 2018 7:08 pm
by steveST100
3 spoke.

This was only used on the 12v CF50/70.
Front.
Note plate is on the left side.
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Other side.
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Brake plate.
Note push in speedo drive cable.
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Inside of hub and brake plate.
Note the flat tabs on the speedo drive and raised bits on hub.
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Speedo drive in plate.
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Rear.
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Inside hub and plate.
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Sprocket side.
This hub was missing the seal,showing sprocket held on by the C-clip.
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steve g

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Fri Mar 16, 2018 5:33 pm
by steveST100
Rims.
4 spoke.
These have 4 smaller 6mm holes and 4 8mm holes.
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There is only one bolt hole between the spoke webs.
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3 spoke.
These have 6 6mm holes and 3 8mm holes.
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There are two 6mm holes between the spoke webs.
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Hub nuts and bolts.
The bolts are stock 8mm type but the nuts are a larger size than a stock 8mm nut.
Best to save the old nuts and have them replated.
Small size nut over the larger type.
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Smaller stock nut in the larger hole that the hub nuts fits in.
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steve g

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Fri Jun 15, 2018 12:03 am
by Monkster
Hi Steve,

Great info - I see you've tidied the garage :lol: Am I right in thinking the 12v 3 spoke runs the same brake plate as a Cub or a CG?

I may have a set of 4-spoke type standard ST70 steels for you if you need 'em as I've been having a clear out. I'll confirm later if it's 2 complete wheels. I've also been onto Minibike Craze this afternoon and ordered another Kepspeed front wheel as my modified Chaly mudguard is just fouling the tyre on the GT Dax but its too much of a risk should the tyre expand at road speed. Dropping from a 3.50 to a slender 2.75 (which was near enough my standard test wheel) gives plenty of clearance with the 110/80/10 Zippy 1 and will probably keep the front end sharper in corners. MBC are working from home now and I'm going over to collect it next week.

BTW, this is my first [test] post. I ought to introduce myself formerly but I'll not bog down the thread any more.

Russ (Monkster)

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Fri Jun 15, 2018 4:53 pm
by steveST100
Monkster wrote:
Fri Jun 15, 2018 12:03 am
Hi Steve,

Great info - I see you've tidied the garage :lol: Am I right in thinking the 12v 3 spoke runs the same brake plate as a Cub or a CG?


Russ (Monkster)
Me tidy the garage,any flat place is a shelf in there.
As for the brake plates the rear 4 spoke will use the early 12v cub but the fronts are on the left hand side and not the right as a cub and have different gearing in them.

steve g

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Sat Feb 24, 2024 8:43 pm
by Coddex
Hi, I know this is an old thread but I’m just about to purchase a 1984 3 spoke cf50
According to your data it will be a 12v
Am I correct ?

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Sun Feb 25, 2024 1:38 pm
by steveST100
Hi Coddex.
Yes should be 12v also should have a square headlight and the front rack. Mudguards should also be plastic and the seat is a different shape to the 6v one and it should have a seat lock on the back.

steve g

Re: ST50/70 Dax and CF50/70 chaly 3 and 4 spoke wheels.

Posted: Sun Feb 25, 2024 1:43 pm
by steveST100
Add to that the rear brake is on the bars and works with a cable as there is no rear brake peddle. To tell if the frame is a 12v or 6v one just look where the rear brake switch would fit as the 6v has a bracket and the 12v this is missing. Having to have one fitted to my frame as going to be running a manual engine and need the bars free for the clutch lever, but converting the rear brake one to the clutch one.

steve g