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20" wheel[s] with 70mm SA hub brakes

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stormbird View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2019 at 4:02pm
Roy

It was testing after the bearings were changed that brought the problem to my attention as I have not yet ridden the wheels myself.

Can you give some idea what you consider to be ' far superior ' bearings ? and where to get them from please.

It is possible the ones I have used may only be SA quality Wink

regards Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2019 at 6:44pm
Originally posted by stormbird stormbird wrote:

Roy

It was testing after the bearings were changed that brought the problem to my attention as I have not yet ridden the wheels myself.

Can you give some idea what you consider to be ' far superior ' bearings ? and where to get them from please.

It is possible the ones I have used may only be SA quality Wink

regards Paul

Paul, I bought half a dozen from a bearing specialist shop on the Rochester Way. I used yellow pages to look them up, which tells you how long ago it was. I think this is them now. http://www.bearingshopuk.co.uk/ Best to ask them about which ones are high quality and they recommend for the application.

Roy
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stormbird View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2019 at 9:34pm
Roy

Thanks.

Paul
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stormbird View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2019 at 1:02pm
Kevin

As you can see I cannot use the conventional back plate mounts without extensive alteration to the rear frame ?

 
regards Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2019 at 5:27pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2019 at 10:24pm
Roy

thanks will investigate

Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 10 April 2019 at 10:30pm
Hi all

I think with all the help I received an update is in order ?

So we now have this :-



Luggage area built and SA brakes deployed after buying Kevin's suggested parts.

Now I have another problem with them ? I have the brakes cabled up however one is good and one dud ?

So new parts are  :- levers - cables/inners/outers - back plates

Second hand parts are :- wheels

I bought a pair of new SA brake levers [ to get a parking brake :-) ] one of which came with a cable.

I fitted new levers and the supplied cable and another also new cable[ source unknown [ may be Asda ?]].

One brake has adjusted up fine and already on a dry road without the lever hitting the bars I can almost lock the wheel ...

The other one is troublesome ?

The lever pulls all the way up to the bars and only retards?

I think at first it was inching the cable locking thinkie up the cable so I removed it from the lever and tighten it with 2 spanners and tried again .

No better.

Also I seem to have a problem where the ferrule at the adjuster end is tight in the barrel so the only way to move the threaded part [ that clips in the back plate ] up or down the adjuster is to un-clip them both move it and clip them back up again.

Cable management is currently with a few reusable cable ties ?

I wonder if either the cable outer is not good enough or I have insufficient cable ties to stop flexing of the outer ?

Or there is another problem.

regards Paul



Edited by stormbird - 10 April 2019 at 10:33pm
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D.TEK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote D.TEK Quote  Post ReplyReply Direct Link To This Post Posted: 10 April 2019 at 10:43pm
Does the "Iffy" SA brake function correctly with the cable disconnected from the backplate lever arm ?

D.TEK HPVS purveyors of recumbent trikes and cycles
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stormbird View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 10 April 2019 at 10:59pm
Kevin

Will try tomorrow.

I may just swap the hub ends of both cables over and see what happens.

regards Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stormbird Quote  Post ReplyReply Direct Link To This Post Posted: 11 April 2019 at 6:14pm
Crikey blimey have it fixed !


After extensive YouTube overload and talks with DannyC who has trod this path successfully before me I attacked it with renewed vigor.


Took the cable outer off only to find the black plastic feral's jammed into both the adjuster and brake lever ?


Got another new but unmarked outer and cut it to length added two steel feral's and reassembled.


Knowing a bit more about their adjustment now I move the stop down about .5" and readjusted both brakes.


Now in an emergency stop the left hand one can lock the wheel up briefly and the right hand one comes close , can't expect any more now till they are bedded in.


So small list of stuff to do before it's maiden voyage to my parents house , hopefully Monday if all goes well.


Thanks for your advice and hanging in there Paul

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