W/NG Front Brake Cam

Pictures of our bikes. W/NG restoration pictures and builds
User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

W/NG Front Brake Cam

Postby LuisPaz » Fri May 18, 2018 12:18 am

Hi Fellows
I make and easy drawing and i need measurements to make my own front brake cam.
Can tell me any measurements with a letter?
Thanks in advance!
Attachments
Front Cam 4115-30.jpg
Luis, from Argentina
1944 Ariel WNG

nevhunter
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 3205
Joined: Tue May 10, 2011 9:42 am
Location: Victoria.. Australia.
Contact:

Re: W/NG Front Brake Cam

Postby nevhunter » Sat May 19, 2018 2:02 am

I'll see what I can do , Luis. OK here it is.
A = 1/2 inch diameter
B = 1"
C = 1/2 inch Cam width.
both washers one fixed and one floating are 1'5 mm thick and 30 mm dia which is also dimension D.
Thread is 5/16 x 26 tpi thread, 8 mm long. Square is .390 inch across flats 5 mm long and 10 degrees anticlockwise of the faces of the cam to position lever alignment correctly.
Adjust B length to get correct end float and allow for washer. Sorry about the mm and inches mix.. Conversion is 3937.( 1 mm = .3937 inches . Good luck. Nev

User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

Re: W/NG Front Brake Cam

Postby LuisPaz » Mon May 21, 2018 1:42 am

Hi Nev! Thank you very much!
Now i have lathe work for the next weeks! :D
Luis, from Argentina
1944 Ariel WNG

User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

Re: W/NG Front Brake Cam

Postby LuisPaz » Sun Jun 24, 2018 1:40 am

Today I started to build the cam

A scrap bolt turned into brake cam! :lol:

it remains to adjust and finish ...
Attachments
20180623_122043.jpg
20180623_130046.jpg
20180623_162547.jpg
20180623_172918.jpg
20180623_181841.jpg
Luis, from Argentina
1944 Ariel WNG

nevhunter
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 3205
Joined: Tue May 10, 2011 9:42 am
Location: Victoria.. Australia.
Contact:

Re: W/NG Front Brake Cam

Postby nevhunter » Sun Jun 24, 2018 2:22 am

Don't forget the square on the end is displaced about 10 + degrees to get the brake arm in the correct position. They MAY be slightly tapered. That would get a better fit. The "fixed " washer is rivetted on. You leave a small extension. Hope it's not to late for that one. Nev Nev

User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

Re: W/NG Front Brake Cam

Postby LuisPaz » Sun Jun 24, 2018 3:36 pm

nevhunter wrote:Don't forget the square on the end is displaced about 10 + degrees to get the brake arm in the correct position. Hope it's not to late for that one. Nev Nev

No late Nev!
I have that info...

But now i need pics ansd measurement to make the brake cam bush...
Attachments
32899225_1658362037578292_7053507979995250688_n.jpg
square on the end is displaced about 10 + degrees
Luis, from Argentina
1944 Ariel WNG

nevhunter
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 3205
Joined: Tue May 10, 2011 9:42 am
Location: Victoria.. Australia.
Contact:

Re: W/NG Front Brake Cam

Postby nevhunter » Sun Jun 24, 2018 11:17 pm

There's no bush as such. The cam turns in the floating "bracket" P/n 4130-32 held in place with two 1/4" bolts P/n 0531, 2 stepped nuts P/n 4132-29 and two Thackery washers . The holes at each end are elongated to allow movement for the shoes to centre when the brake is applied. It's fabricated by welding but you could make it from solid mild steel (or even bronze).. Nev

User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

Re: W/NG Front Brake Cam

Postby LuisPaz » Sun Jun 24, 2018 11:31 pm

Yes Nev , is bolted and floating.. thanks for the bolt measurements!
Attachments
brake_2.jpg
Luis, from Argentina
1944 Ariel WNG

User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

Re: W/NG Front Brake Cam

Postby LuisPaz » Sun Jul 08, 2018 2:20 am

Some work today...
Attachments
20180707_161802.jpg
20180707_163342.jpg
20180707_170441.jpg
20180707_171134.jpg
20180707_171154.jpg
Luis, from Argentina
1944 Ariel WNG

User avatar
LuisPaz
Holder of a Nylon Anorak
Holder of a Nylon Anorak
Posts: 146
Joined: Fri Jan 19, 2018 12:59 am
Contact:

Re: W/NG Front Brake Cam

Postby LuisPaz » Sun Jul 08, 2018 2:23 am

I keep moving slowly, adapting parts that have to be twinned, it takes time.
Attachments
20180707_182556.jpg
20180707_183806.jpg
20180707_183814.jpg
20180707_191534.jpg
Luis, from Argentina
1944 Ariel WNG


Return to “W/NG Restorations”

Who is online

Users browsing this forum: No registered users and 1 guest