Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: Ewan 500 K1 on May 09, 2014, 06:47:51 PM

Title: which model 750 has a 295mm front disc
Post by: Ewan 500 K1 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
Title: Re: which model 750 has a 295mm front disc
Post by: MarkCR750 on May 09, 2014, 07:19:27 PM: CB750K7 does, not sure about the earlier ones, I just converted mine to twin disc and had to pay £30 for one of those arms from a breaker.
Title: Re: which model 750 has a 295mm front disc
Post by: Trigger on May 09, 2014, 07:32:13 PM: Mark, you kept that quite. Are you 100% sure that it is 50mm between the holes?
Title: Re: which model 750 has a 295mm front disc
Post by: Green1 on May 09, 2014, 07:49:21 PM: Both my 750's have a disk size of 295mm and both have a distance of 50mm between the holes.
One bike has the original k1 front end and one has a k2 front end with the same caliper&mount as your pic.

Mick
Title: Re: which model 750 has a 295mm front disc
Post by: Trigger on May 09, 2014, 07:59:34 PM: Mick, your calipers bolt from the back? On what Mark said and a quick look at the microfiche the arm and caliper in the picture are of the 750K7, K8 and F1. Not sure if the arm is used for all the 750k's
Title: Re: which model 750 has a 295mm front disc
Post by: Green1 on May 09, 2014, 08:02:37 PM: My k1 one bolts from the back the other from the front
Both arms are different but the holes are the same

Mick
Title: Re: which model 750 has a 295mm front disc
Post by: Ewan 500 K1 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
Title: Re: which model 750 has a 295mm front disc
Post by: Ewan 500 K1 on May 09, 2014, 08:33:28 PM: one here sitting at a tenner

http://www.ebay.co.uk/itm/HONDA-CB750-4-K6-BRAKE-CALIPER-MOUNT-PIVOT-FOR-REFURB-/321396697633?pt=UK_Motorcycle_Parts_13&hash=item4ad4bc6a21
Title: Re: which model 750 has a 295mm front disc
Post by: Trigger on May 09, 2014, 08:38:59 PM: Well i have one that has been overhauled for a bit more than a tenner ;)
Title: Re: which model 750 has a 295mm front disc
Post by: Ewan 500 K1 on May 09, 2014, 09:01:31 PM: .. and me. .. better not flood the market all at once though eh ?
Title: Re: which model 750 has a 295mm front disc
Post by: Trigger on May 09, 2014, 09:09:19 PM: Ewan, i can sell you one. Then your have a matching pair ;)
Title: Re: which model 750 has a 295mm front disc
Post by: Ewan 500 K1 on May 09, 2014, 09:17:07 PM: match yer fiver Trig ?
Title: Re: which model 750 has a 295mm front disc
Post by: MarkCR750 on May 09, 2014, 11:35:22 PM: Quote from: trigger6969 on May 09, 2014, 07:32:13 PM
Mark, you kept that quite. Are you 100% sure that it is 50mm between the holes?
I will check in the morning trigger.
Title: Re: which model 750 has a 295mm front disc
Post by: Bitsa (Ralph Wright - RIP) on May 10, 2014, 02:44:13 PM: Mines the same as Micks 295 and 50
Cheers
Bitsa
Title: Re: which model 750 has a 295mm front disc
Post by: MarkCR750 on May 10, 2014, 03:38:59 PM: Yes 50mm trigger.