Author Topic: Rear Brake Return Spring Location  (Read 237 times)

Offline waffey

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Rear Brake Return Spring Location
« on: March 15, 2021, 01:48:57 PM »
Hi,

i did look at some of the older post reference the rear brake return spring.

I'm sure mine is wrong as the spring does not have any tension. Please take a look at the pictures and tell me where i have gone wrong!

Thanks
Bikes:
Suzuki Address 110 Scooter
Suzuki TL1000s
BMW R1200GS LC
Honda CB400 F2 1977 (restoration started)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: Rear Brake Return Spring Location
« Reply #1 on: March 15, 2021, 02:29:14 PM »
The long tail of the spring fits around the down tube of the frame. Here is mine, the free end on mine has a bit of rubber tube on it to stop it damaging the frame. Hope this helps. I can try and take another pic from a different angle if it helps.

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« Last Edit: March 15, 2021, 02:31:10 PM by Nurse Julie »
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Offline waffey

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Re: Rear Brake Return Spring Location
« Reply #2 on: March 15, 2021, 04:03:18 PM »
Nurse Julie,

can you get a picture where the small end of the spring sits on the inside of the frame? Thats the bit that is confusing me.

thanks for the other picture, i saw that in another thread

ta
Bikes:
Suzuki Address 110 Scooter
Suzuki TL1000s
BMW R1200GS LC
Honda CB400 F2 1977 (restoration started)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: Rear Brake Return Spring Location
« Reply #3 on: March 15, 2021, 04:42:46 PM »
Nurse Julie,

can you get a picture where the small end of the spring sits on the inside of the frame? Thats the bit that is confusing me.

thanks for the other picture, i saw that in another thread

ta
I'm trying desperately to get a pic for you, problem is the bike is at floor level and I don't have a ramp free to lift it up to get a pic. Has anyone else got their 400 in a raised position to take a photo please?
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline waffey

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Re: Rear Brake Return Spring Location
« Reply #4 on: March 15, 2021, 05:37:39 PM »
O'm thinking the green spring piece highlighted should go where the red line is?
Bikes:
Suzuki Address 110 Scooter
Suzuki TL1000s
BMW R1200GS LC
Honda CB400 F2 1977 (restoration started)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: Rear Brake Return Spring Location
« Reply #5 on: March 15, 2021, 05:53:24 PM »
Yes, I've just had a rummage and I can feel the other tale end going around a bit of tube. If it still doesn't work, I'll try harder tomorrow to take a better pic for you.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline waffey

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Re: Rear Brake Return Spring Location
« Reply #6 on: March 21, 2021, 09:03:09 PM »
Hi, still struggling with this damn spring. Any pictures of where ther inside spring locates pleaseeeeeeeeeeeeeeee...
Bikes:
Suzuki Address 110 Scooter
Suzuki TL1000s
BMW R1200GS LC
Honda CB400 F2 1977 (restoration started)

Offline Oddjob

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Re: Rear Brake Return Spring Location
« Reply #7 on: March 21, 2021, 09:28:06 PM »
Tbh Waffey it looks right in the first set of pics, however I seem to think the spring should be under tension before it’s clipped to the brake rod arm. Are the dots on the brake rod arm pivot and the brake lever in line
Don't play stupid with me, I'm better at it

Offline waffey

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Re: Rear Brake Return Spring Location
« Reply #8 on: March 22, 2021, 09:20:03 AM »
OddJob,

I dont have any tension on the spring, thats my issue i believe. I get the tension when the pedal is pressed but when it returns the pedal is floppy as with the spring. Just thinking.........Do i need the footrest installed for it all to work properly, ie the peday return is stopped by the foot rest......i think this could be a Doh moment?
Bikes:
Suzuki Address 110 Scooter
Suzuki TL1000s
BMW R1200GS LC
Honda CB400 F2 1977 (restoration started)

Online taysidedragon

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Re: Rear Brake Return Spring Location
« Reply #9 on: March 22, 2021, 10:00:56 AM »
OddJob,

I dont have any tension on the spring, thats my issue i believe. I get the tension when the pedal is pressed but when it returns the pedal is floppy as with the spring. Just thinking.........Do i need the footrest installed for it all to work properly, ie the peday return is stopped by the foot rest......i think this could be a Doh moment?

Yes. The footrest bracket has an adjustable bolt on it that acts as a stop for the brake pedal.
Gareth

2010 Street TripleR
1977 CB400F

 

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