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SOHC.co.uk Forums => CB750 => Topic started by: Rickman Pete on May 07, 2020, 09:46:03 PM

Title: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 07, 2020, 09:46:03 PM
Hi all

I have a weird issue

I have a f1 top yoke fitted to my rickman cr750.

The manual shows the bolt as m8 56mm

The ones i have which fit perfectly  are m8 40mm

56mm will hang out miles

Is there another model or something I'm missing as i need to.replave these bolts as plating is wrecked
Title: Re: F1 top yoke fork clamp bolt
Post by: hairygit on May 07, 2020, 10:01:08 PM
F1 top yoke bolt SHOULD be M7, in an effort to reduce the risk of overstressing and cracking the clamps. If a PO has drilled it to 8mm, look for another yoke to be safe as you cannot tell if it's been overstressed until it lets go, which you do not want while braking hard!

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Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 07, 2020, 10:18:42 PM
The manual says m8? So does david silver parts list
Title: Re: F1 top yoke fork clamp bolt
Post by: Nurse Julie on May 07, 2020, 10:36:34 PM
The manual says m8? So does david silver parts list
Im sure Mr Hairy is correct M7 x54 according to CMS
Title: Re: F1 top yoke fork clamp bolt
Post by: hairygit on May 07, 2020, 10:43:33 PM
Which bolt are you referring to, the one that holds the yoke to the steering stem or the pair that clamp the top of the fork legs?

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Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 07, 2020, 10:58:24 PM
Leg clamp bolts
Title: Re: F1 top yoke fork clamp bolt
Post by: Nurse Julie on May 07, 2020, 11:09:48 PM
7x54 bolt with D washer, washers and nut.
[attachimg=1]
[attachimg=2]
Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 08, 2020, 12:09:43 AM
No 25. But that photo isnt of my set up as mine ate bolts and no nuts theyre threaded i to yoke only 40mm legnth
Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 08, 2020, 12:13:59 AM
** are not ate sorry
Title: Re: F1 top yoke fork clamp bolt
Post by: SteveD CB500K0 on May 08, 2020, 07:00:32 AM
You can edit your posts Pete (just not anybody else’s)

Steve


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Title: Re: F1 top yoke fork clamp bolt
Post by: Nurse Julie on May 08, 2020, 09:14:18 AM
Pete, consider putting the photo you put on FB of the top yoke on here, someone may be able to identify it.
Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 08, 2020, 11:28:09 AM
This may help

Please note the similarity to the f1 yoke but not a through bolt with nut and yoke isn't machined to suggest it should be either.

Might be worth ignoring the light cluster as that may or may not be the right one for yoke as previously suggested on fb

Thanks nurse for the idea of the pic[attachimg=1]
Title: Re: F1 top yoke fork clamp bolt
Post by: Bryanj on May 08, 2020, 11:58:52 AM
What diameter are the forks, that looks like GL1000 but they have bigger dia forks
Title: Re: F1 top yoke fork clamp bolt
Post by: Moorey on May 08, 2020, 01:09:39 PM
The bottom one doesn't look like a f1 either.
Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 08, 2020, 01:27:42 PM
36mm diameter z650 forks k207

Your right i believe the bottom one isn't. Top ones not off a z jason a kh has confirmed that but is identical to f1 except the bolts
Title: Re: F1 top yoke fork clamp bolt
Post by: Bryanj on May 08, 2020, 02:02:57 PM
F1 are only 35mm forks so it cant be an F1 top yoke if its 36mm forks
Trouble is GL are 37mm so is it even a Honda yoke?
Title: Re: F1 top yoke fork clamp bolt
Post by: Moorey on May 08, 2020, 07:55:59 PM
Here#s a few to go at. ;) All 36mm

36 Honda XR-200R (84-02)
36 Kawasaki KX-80 T2-T4 (92-94)
36 Kawasaki KX-85 A1-A4 (01-04)
36 Kawasaki KX-100B5-B7 (95-97),
36 Kawasaki KX-125 A4-A5 (78-79)
36 Kawasaki EL-250B2/B3 (88-89)
36 Kawasaki EX-250F2-F4, F6-F18 "Ninja 250R" (88-90, 92-04)
36 Kawasaki KL-250A3-A5 (80-82)
36 Kawasaki KL-250D2-D21 "KLR250" (85-04)
36 Kawasaki KLX-250A1/A2 (79-80)
36 Kawasaki KX-250 A/A1/A2 (74-76)
36 Kawasaki KX-250 A3 (77)
36 Kawasaki KX-250 A4 (78)
36 Kawasaki KXT-250A1/A2 (84-85)
36 Kawasaki KX-400 A1/A2 (75-76)
36 Kawasaki EN-450A1-A6 "454 Ltd" (85-90)
36 Kawasaki H1-B/D/E/F (72-75)
36 Kawasaki EN-500A1-A7 "Vulcan 500" (90-96)
36 Kawasaki KH-500A8 (76)
36 Kawasaki KZ-550A1-A2 (80-81)
36 Kawasaki KZ-550A3-A4 (82-83)
36 Kawasaki KZ-550C2-C4 "Ltd" (81-83)
36 Kawasaki KZ-550F1/F2 "Spectre/Ltd" (83-84)
36 Kawasaki KZ-650B1-B3 (77-79)
36 Kawasaki KZ-650D1-D2 "SR" (78-79)
36 Kawasaki KZ-650F1 (80)
36 Kawasaki KZ-650H1-H3 "CSR" (81-83)
36 Kawasaki KZ-700A1 (84)
36 Kawasaki KZ-750B1-B4 (76-79)
36 Kawasaki KZ-750F1 "Ltd" (83)
36 Kawasaki KZ-750E1 (80)
36 Kawasaki KZ-750E2-E3 (81-82)
36 Kawasaki KZ-750K1/K2 "Ltd" (83-84)
36 Kawasaki KZ-750M1 "CSR" (82)
36 Kawasaki KZ-750N1/N2 "Spectre" (82-83)
36 Kawasaki Z1/A/B 900 (73-75)
36 Kawasaki KZ-1000A1-A4 (77-80)
36 Kawasaki KZ-1000D1/ D3 "Z1-R" (78, 80)
36 Suzuki RM-100 K3 (03)
36 Suzuki RM-125 B/C (77-78)
36 Suzuki RM-125 B/C (77-78)
36 Suzuki PE-175 C/N/T/X (78-81)
36 Suzuki PE-175 C/N/T/X (78-81)
36 Suzuki RS-175 T/X/Z (80-82)
36 Suzuki RS-175 T/X/Z (80-82)
36 Suzuki DR-250 Z/D/E/F (82-85)
36 Suzuki DR-250 Z/D/E/F (82-85)
36 Suzuki PE-250 B/C (77-78)
36 Suzuki PE-250 B/C (77-78)
36 Suzuki PE-250 N/T/X (79-81)
36 Suzuki PE-250 N/T/X (79-81)
36 Suzuki RS-250 T/X (80-81)
36 Suzuki RS-250 T/X (80-81)
36 Suzuki TS-250 T/X (80-81)
36 Suzuki TS-250 T/X (80-81)
36 Suzuki DR-370 C (78)
36 Suzuki DR-370 C (78)
36 Suzuki DR-370 N (79)
36 Suzuki DR-370 N (79)
36 Suzuki SP-370 C (78)
36 Suzuki SP-370 C (78)
36 Suzuki DR-400 T (80)
36 Suzuki DR-400 T (80)
36 Suzuki PE-400 T/X (80-81)
36 Suzuki PE-400 T/X (80-81)
36 Suzuki SP-400 T (80)
36 Suzuki SP-400 T (80)
36 Suzuki DR-500 X/Z/D (81-83)
36 Suzuki DR-500 X/Z/D (81-83)
36 Suzuki SP-500 X/Z/D (81-83)
36 Suzuki SP-500 X/Z/D (81-83)
36 Yamaha YZ-80 E1/F1/G1/H1/J1/K1/L1/M1/N1 (93-01)
36 Yamaha YZ-85P-S (02-04)
36 Yamaha YZ-100 J/K (82-83)
36 Yamaha YZ-125 D/E/F/G (77-80)
36 Yamaha IT-175 D/E/F (77-79)
36 Yamaha IT-175 G/H (80-81)
36 Yamaha TT-225 S/T (86-87)
36 Yamaha TTR-225 L/LC, N/NC/P/PC/R/RC/S/SC (99, 01-04)
36 Yamaha XT-225 D/DC-S/SC (92-04)
36 Yamaha DT-250 F (79)
36 Yamaha IT-250 D/E/F (77-79)
36 Yamaha IT-250 G (80)
36 Yamaha XT-250 L/LC (84)
36 Yamaha TT-250 G/H/J (80-82)
36 Yamaha TZ-250 G/H/J (80-82)
36 Yamaha TY-350 N/S (85-86)
36 Yamaha XT-350 L/LC/N/NC/S/SC/T/TC/U/UC/W/WC/A/AC/B/BC (84-91)
36 Yamaha XT-350 D/DC/E/EC/F/FC/G/GC/H/HC/J/JC/K/KC (92-98)
36 Yamaha XT-350 L/LC/M/MC (99-00)
36 Yamaha IT-400 C/D/E/F (76-79)
36 Yamaha IT-425 G (80)
36 Yamaha TT-500 C/D/E (76-78)
36 Yamaha TT-500 F/G/H (79-81)
36 Yamaha XT-500 C/D/E/F/G/H (76-81)
36 Yamaha XV-500K "Virago" (83)
36 Yamaha XV-535 T/TC/U "Virago" (87-88)
36 Yamaha XV-535 E/EC/F/FC/SF/SFC/G/GC/SG/SGC "Virago" (93-95)
36 Yamaha XV-535 H/HC/SH/SHC/J/JC/SJ/SJC "Virago" (96-97)
36 Yamaha XV-535 K/KC/L/LC "Virago" (98-99)
36 Yamaha XJ-550 H/J/K "Maxim" (81-83)
36 Yamaha FJ-600 L/LC/N/NC (84-85)
36 Yamaha FZ-600 S/SC/T/TC/U/UC (86-88)
36 Yamaha SRX-600 S/SC (86)
36 Yamaha YX-600 S/SC/T/TC/U/UC/W/WC/A/AC "Radian" (86-90)
36 Yamaha XJ-650 G/H "Maxim" (80-81)
36 Yamaha XJ-650 J/K "Maxim" (82-83)
36 Yamaha XJ-650 RJ "Seca" (82)
36 Yamaha XJ-750J/K "Maxim" (82-83)
36 Yamaha XJ-750RH/RJ/RK "Seca" (81-83)
36 Yamaha XS-750 2D (77)
36 Yamaha XS-750 E/F (78-79)
36 Yamaha XV-750 H "Virago" (81)
36 Yamaha XV-750 J/K "Virago" (82-83)
36 Yamaha XV-750 MK "Virago" (83),
36 Yamaha XS-850 G/H (80-81)
36 Yamaha XS-850 LG/LH/SG/SH (80-81)
36 Yamaha XV-920 J "Virago" (82)
36 Yamaha XV-920 K "Virago" (83)
36 Yamaha XV-920 MK "Midnight Virago" (83)
_____________
Title: Re: F1 top yoke fork clamp bolt
Post by: Bryanj on May 08, 2020, 08:05:47 PM
Put up a picture of the sliders and we will see if anybody recognises them!!
Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 08, 2020, 08:32:45 PM
The slider and leg are z650 so they wont give you any clues unfortunately. 

Ill have a look at then suzi stuff as kwaks been ruled out alreadythanks
Title: Re: F1 top yoke fork clamp bolt
Post by: Rickman Pete on May 11, 2020, 10:21:09 AM
Anyone????


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