Author Topic: c10 front brakes  (Read 1106 times)

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Offline chaterlea25

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Re: c10 front brakes
« Reply #30 on: October 02, 2020, 06:25:41 pm »
Hi Thomas,
Did you check the cam end of the shoes for the steel pads?
these are folded around the ends of the alloy shoe, and are approx 1.5mm thick
the 2 of these will make up your missing 3mm

John

Online Owen

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Re: c10 front brakes
« Reply #31 on: October 02, 2020, 06:34:48 pm »
Those shoes don't look right to me. They are different to the normal 29-5850 5 1/2" ones.  Look at John's first picture.
« Last Edit: October 02, 2020, 06:45:38 pm by Owen »
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline ThomasC11

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Re: c10 front brakes
« Reply #32 on: October 02, 2020, 07:50:18 pm »
Hm, there are no steel pads...  ??? Interesting! I didn't know that they should be there (can't see them in the Draganfly shop) and I have no idea if the shoes are right. I see that Draganfly sell new shoes only in exchange with the old ones. But will they accept if the shoes are wrong...?
1946 BSA C11
1937 Sunbeam Model 9
... and a scratched Hyundai

Offline steve70

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Re: c10 front brakes
« Reply #33 on: October 02, 2020, 08:48:40 pm »
just in process of fitting 4mm linings now, material is far superior and more grip than what was on there,in my case the material was wrong and badly applied and to thin,  the shoes I have look the same as Johns photo but I wasnt aware of steel caps either, there are none on either of the two Cs I have, they would be easy to make if they should be there, what thickness are we looking at, having them there could make things a bit tight

Online Owen

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Re: c10 front brakes
« Reply #34 on: October 02, 2020, 09:51:56 pm »
Look at this pair of shoes https://bsac10c11c12.co.uk/smf/gallery/?sa=view;id=2702 they are the correct ones.
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline chaterlea25

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Re: c10 front brakes
« Reply #35 on: October 02, 2020, 10:08:20 pm »
Hi All,
Yes it looks like Thomas's brake shoes are different ??
The linked to shoes have the steel pads (look carefully)
If I think of it I will take a photo of the shoe ends tomorrow where the steel pads are clearly seen

John

Offline ThomasC11

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Re: c10 front brakes
« Reply #36 on: October 03, 2020, 07:03:06 am »
Difficult to see, indeed... Anyway, thank you fellows. It really seems that I have the wrong shoes (looks like Bantam). I learn this after already 8 years in my hands... so, better not stopping discussing here.  :D Draganfly offers shoes out of steel (29-5850FA) and alloy (29-5850FB). The price is almost the same. Any idea why this difference and what is better?
« Last Edit: October 03, 2020, 07:17:00 am by ThomasC11 »
1946 BSA C11
1937 Sunbeam Model 9
... and a scratched Hyundai

Offline steve70

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Re: c10 front brakes
« Reply #37 on: October 03, 2020, 07:07:50 am »
Trevor thanks for that earlier post, have fitted linings from an old set of shoes I bought with a lot of other c parts sometime ago, the shoes were steel probably from an earlier model, the linings gave the appearance of little use, your comment about the brakes being better earlier I think would be because of the asbestos content, im sure the ones ive used are, so its masks etc, glued and riveted they fitted perfectly  which with a little sanding , 4mm thick which seem the right thickness. The result is a front brake that locks whithout to much wrist pressure and combined with back brake makes a very safe bike.
The front brake actually improves the faster the speed relative, ive gone back to the short arm so angle is a little under 90 degrees, there is obviously softer lining material out there but what was put on mine was to hard and no grip , the gap between linings and drum is as close as I can get it without interference.   

Offline steve70

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Re: c10 front brakes
« Reply #38 on: October 03, 2020, 07:11:36 am »
If steel caps were a standard fitting on the cam end  there is no way a 4mm lining would fit

Online Owen

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Re: c10 front brakes
« Reply #39 on: October 03, 2020, 07:47:14 am »
The steel shoes are the earlier offset (handed)  shoes for pre 49 models part No. 24-7767 &24-7768. They only fit the earlier brake plates and tend to twist   inwards when applied. 49 onwards the went to the centrally alloy shoes which did not suffer from the twisting.
« Last Edit: October 03, 2020, 07:53:15 am by Owen »
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline steve70

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Re: c10 front brakes
« Reply #40 on: October 03, 2020, 08:26:49 am »
that is the shoes I got the linings off

Offline BSAc11g

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Re: c10 front brakes
« Reply #41 on: October 03, 2020, 10:30:40 am »
Trevor thanks for that earlier post, have fitted linings from an old set of shoes I bought with a lot of other c parts sometime ago, the shoes were steel probably from an earlier model, the linings gave the appearance of little use, your comment about the brakes being better earlier I think would be because of the asbestos content, im sure the ones ive used are, so its masks etc, glued and riveted they fitted perfectly  which with a little sanding , 4mm thick which seem the right thickness. The result is a front brake that locks whithout to much wrist pressure and combined with back brake makes a very safe bike.
The front brake actually improves the faster the speed relative, ive gone back to the short arm so angle is a little under 90 degrees, there is obviously softer lining material out there but what was put on mine was to hard and no grip , the gap between linings and drum is as close as I can get it without interference.

That is the self energizing coming into effect.
The brake should also be stronger if you jab on and more gradual if you pull on slowly.
The important thing is you can now stop.
Bike Beesa
Trevor

Offline chaterlea25

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Re: c10 front brakes
« Reply #42 on: October 03, 2020, 09:37:01 pm »
Hi All,

Quote
If steel caps were a standard fitting on the cam end  there is no way a 4mm lining would fit

Steve, the shoes with steel pads have and had 4mm linings,
The photos I posted earlier show this, it will fill the brake drum nicely when the new linings are fitted
The steel pads are crimped in place and not very noticeable on the picture of the new shoes Owen linked to

Thomas's brake shoes had a large gap between the shoes and drum, leading me to ask if the steel pads were missing
The can become detached for various reasons, These ones look almost cast in place?

John

Online Owen

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Re: c10 front brakes
« Reply #43 on: October 03, 2020, 10:28:53 pm »
Googling the 1075 on thomases shoes as BSA 1075 comes up as tiger cub / bantam shoes GF 1075. so that suggests you have the wrong shoes?
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline steve70

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Re: c10 front brakes
« Reply #44 on: October 04, 2020, 02:32:45 am »
Thanks John, obviously they are suppose to be there, they werent on mine, brakes are back in now, it was a tight fit and had to sand the high spots off to get them in with them on I dont think they would have gone in if they were there. Two other spare sets dont have them either , I suppose it comes down to what size linings BSA used with the aluminium shoe