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

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steveST100
Posts: 1521
Joined: Tue Oct 25, 2011 3:04 pm
Rides:: 1983 C50LAC 1976 ST100 1980 ST70
Location: Clitheroe Lancs

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

Post by steveST100 » Mon Mar 12, 2018 6:52 pm

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

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steveST100
Posts: 1521
Joined: Tue Oct 25, 2011 3:04 pm
Rides:: 1983 C50LAC 1976 ST100 1980 ST70
Location: Clitheroe Lancs

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

Post by steveST100 » Mon Mar 12, 2018 7:08 pm

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.
Image

steve g

User avatar
steveST100
Posts: 1521
Joined: Tue Oct 25, 2011 3:04 pm
Rides:: 1983 C50LAC 1976 ST100 1980 ST70
Location: Clitheroe Lancs

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

Post by steveST100 » Fri Mar 16, 2018 5:33 pm

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

Monkster
Posts: 18
Joined: Mon Jun 04, 2018 1:55 am
Rides:: 1972 ST70 115cc 1976 Chaly 119cc Prev 1986 C90E
Location: Sheffield

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

Post by Monkster » 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?

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)

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steveST100
Posts: 1521
Joined: Tue Oct 25, 2011 3:04 pm
Rides:: 1983 C50LAC 1976 ST100 1980 ST70
Location: Clitheroe Lancs

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

Post by steveST100 » Fri Jun 15, 2018 4:53 pm

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

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