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Messages - Ewan 500 K1
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76
« on: May 15, 2014, 05:42:37 PM »
Picked up chroming job from Cumbria Metal Finshers, proper triple coating. Seems like a decent job , despite previous comment, nd reasonably priced at £120 inc VAT. Im happy with what they've done http://cumbriametalfinishingltd.co.uk/
77
« on: May 14, 2014, 12:33:10 AM »
ditto to Bitsa's comments from me Steve
78
« on: May 09, 2014, 09:17:07 PM »
match yer fiver Trig ?
79
« on: May 09, 2014, 09:01:31 PM »
.. and me. .. better not flood the market all at once though eh ?
80
« on: May 09, 2014, 08:33:28 PM »
82
« on: May 09, 2014, 08:17:51 PM »
so ... one in the piture is part 45115-392-003. £205 from CMSNL or theres a german one on eabay for £100. According to OEM it fits all of:
CB750A A (76) MOTORCYCLE, JPN, VIN# CB750A-7000001 TO CB750A-7007331
CB750A A (77) MOTORCYCLE, JPN, VIN# CB750A-7100001 TO CB750A-7110560
CB750A A (78) MOTORCYCLE, JPN, VIN# CB750A-7200001
CB750F A MOTORCYCLE, JPN, VIN# CB750F-1000002 TO CB750F-1015054
CB750F A (76) MOTORCYCLE, JPN, VIN# CB750F-2000003 TO CB750F-2022317
CB750K A (77) MOTORCYCLE, JPN, VIN# CB750-2700009 TO CB750-2729534
CB750K A (78) MOTORCYCLE, JPN, VIN# CB750-2800001
Top Bracket is 45104-405-000. No sign of any for sale anywhere
Fits : CB750A A (77) MOTORCYCLE, JPN, VIN# CB750A-7100001 TO CB750A-7110560
CB750A A (78) MOTORCYCLE, JPN, VIN# CB750A-7200001
CB750K A (77) MOTORCYCLE, JPN, VIN# CB750-2700009 TO CB750-2729534
CB750K A (78) MOTORCYCLE, JPN, VIN# CB750-2800001
Pin is 45116-367-690, £46 from CMSNL
So about £300 for new ! ... bloody hell. Think I'll frame mine
83
« on: May 09, 2014, 06:55:50 PM »
The next question is what 750?. Most of the 750K had a caliper that bolted from the back, until the K8 which had a front bolted caliper. The K8 shared the same caliper as the 750 F1. The 750 F2 had a totally different set up, shared with the 750KZ and KB. I have never seen this arm with the 50mm space on any 750's. There must be someone who has this 50mm/wide body caliper fitted. Come on now, don't be shy.
I've asked the over on the 750 page trig.. using pptom's photo
84
« on: May 09, 2014, 06:47:51 PM »
.. and a caliper arm with a 50mm distance between the caliper mounting holes ... like the one in attached picture. Note how the lower edge of the pivot arm sweeps up toward the caliper position and that there is the raised up bit of the casting between the adjuster bolt hole and the bottom edge of the braket .. which are the easily visible differnces with the 500 one in addition to the fact that the caliper mounting holdes are 50mm apart rather than 42mm found on 500/550 s Theres at least 3 forum members with caliper arms for sale if we can find out which model its for  We all have 500/550's and aquired these by mishtake
86
« on: May 08, 2014, 10:17:13 PM »
I've mentioned this before and I still don't understand the physics.
Surely your tyre is going to break loose long before enough stress is put on those bolts.
repeated stress = fatigue = decreasing strength = potential for sudden and catastrophic failure . .... better safe than sorry in any case for the sake of a fiver ?
87
« on: May 08, 2014, 09:33:21 PM »
He might be along soon....
.. think I just saw him passing the window with a package under his arm 
88
« on: May 08, 2014, 09:17:27 PM »
Very interested to know the answer to this too. The second disc setup I recently sold also has the same problem.
I removed it from a mates non running '77 550, so it either had a front end swap at some point or it was a model change.
I believe the disc is the correct 550 size, but caliper and bracket do not match with the new owners forks.
yep, that looks like the same 50mm bolt hole centres caliper arm ... which then seems odd that it came off a 500, unless the disc was also a larger 295mm non standard disc
Did the disc also come off the 500 ?
Does the purchaser mean that the caliper arm bracket holes dont line up with the holes on the fork case ?
What bike is he trying to fit it to ?
.. and he might not want to use the stainless bolts ... was told their low tensile strenth makes them a bit dodgy as disc bolts
http://www.sohc.co.uk/index.php?topic=6550.msg35809#msg35809
.. and given what bryan says re pistons .. if the piston and seal are standard 500 ones , they might not fit that caliper if the caliper fits the caliper arm 
89
« on: May 08, 2014, 09:03:36 PM »
Very interested to know the answer to this too. The second disc setup I recently sold also has the same problem.
I removed it from a mates non running '77 550, so it either had a front end swap at some point or it was a model change.
I believe the disc is the correct 550 size, but caliper and bracket do not match with the new owners forks.
yep, that looks like the same 50mm bolt hole centres caliper arm ... which then seems odd that it came off a 500, unless the disc was also a larger 295mm non standard disc Did the disc also come off the 500 ? Does the purchaser mean that the caliper arm bracket holes dont line up with the holes on the fork case ? What bike is he trying to fit it to ? .. and he might not want to use the stainless bolts ... was told their low tensile strenth makes them a bit dodgy as disc bolts http://www.sohc.co.uk/index.php?topic=6550.msg35809#msg35809
90
« on: May 08, 2014, 07:28:01 PM »
Ewan, now that is another question. Anyone out there have a CB750 F1 or F2 that could clear this up. Ewan and I may have some parts for you
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