What's this hub off?

[stinkwheel]

A while back, I bought a disc brake front wheel with caliper, bracket and master cylinder on ebay for my Enfield project. It was £140 delivered. Described as "Royal Enfield front wheel"

I just got it out to have a proper look and try it on the bike... It's not Royal Enfield. It has, however, been made to fit a Royal Enfield.

I've tracked down the brake calliper as being a Brembo, 2-pot opposed caliper used on K-series BMWs and some 70s/80's Moto Guzzi Californians and V50s.

It's been fitted with a profiled steel bracket which has been well made, it fitted like a glove and lined the disc up bang in the centre of the caliper.

So that's ok. I can get parts/pads for it.

https://lh3.googleusercontent.com/e0vrvx0Ap0YnzDpeJfIZacb4MR5JXw1lfFIFWLPAQVYED7vLz4exm7V5QX2AjyJtu2iuzFCnB8kzhB5LXBqc4jUx6kBsqkyacD0uWV8MgL0dSICBHUMLGNuGmxFefVwcUozoSBPwQA=w1180-h885-no

The magura master cylinder/throttle assembly looks like it's off a K-series BMW.

https://lh3.googleusercontent.com/tw8WxItWJ5oRXg1MyLGTtQUegQMgPCPdNWSiIf1eAHQTG3ELSHdSjmjg60VxzFFLZ30r1gItx8uc61dbjLPtZKIJEUy4ZC23M0VsyEQcSTc1bIowN0q6UsYpeWaVETN7oCXPuT_ngw=w1180-h885-no

The hub though. I have no idea about. Enfields have the axle built into the wheel hub (a bit like a bicycle) and it bolts into the fork rather than sliding the spindle through a hole in the fork ends and bolting it up. This hub has presumably been modified (bearings, spacers etc) to take an Enfield wheel spindle assembly. This hub also has an Enfield speedo drive attached.

The offset disc carrier is oddball as is the means of attaching it. The carrier bolts onto the disc, not the other way round. The inner circle of drillings in the disc is threaded. I have seen pictures of late 70's Moto Guzzis with a similar setup but on an un-drilled disc.

https://lh3.googleusercontent.com/4zailrcEsgYprtn_GwScmxq-29uHuHHqroKu5-0B2qF_VeL4aEBq8Xbh4H1S-E1yAOictlmLXejzxbvaOE4zfpIROcgxqDh6jzfgVZBHxkXeImJ4h0pMzhiKuG_-uH92BekbzCP_kQ=w1180-h885-no

https://lh3.googleusercontent.com/_ReroqBsblQFXxfgKwVeRR4RlGjzlLaj1THtpm93GPP4k1DQOP_6s97u9yKxylklpjunJgAMOgEhgoOGAtLdGJ1DY5tPlbKo9HA5Z4iEWTkgtrc3pKOrdXXUqVvCxYFJMgukZK-ZMA=w1180-h885-no

https://lh3.googleusercontent.com/QwjZACV9ymJ3pQZc_c4fVHMqxIMpBKT13Ltjb3MH-NbwyXOfQZvONaLbTemwSw9BYOXKQMjNxG1Sl1S48hRO40bW6etrQmvgt04fL5gP9n-uXQKzEgDlITWJWstEI4zDlGD7NR7ouQ=w1180-h885-no

Be nice to know what it's off. If not just for idle curiosity, then so I can get a replacement disc in the unlikely event I ever wear this one out.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[RhynoCZ]

It looks like a 80's BMW K/R series setup.

https://d24b7s7vgwc3p7.cloudfront.net/MDWPYMG9/NNBM22/DQL5-Resized640x480.jpg
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[RhynoCZ]

The rotor carrier still puzzles me. I could not find the combination of your carrier with 4 mounting bolts and bolt-on rotor. But the BMW one seems like the best match, so far at least.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[stinkwheel]

I'm seriously wondering if the rotor is custom made.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[temeluchus]

The master cylinder assembly is Guzzi, doesn’t look anything like K series as they have clear reservoirs and k’s have gear and chain throttles.

https://ricambiepocanewoldstock.altervista.org/IT/_private/ricambi_moto/foto/guzzi_usati_3/Gruppo_manopola_gas_freno_Guzzi_California_III-3.jpg

It does look like someone got creative with guzzi spares.
____________________
Some shite cruiser. Now with guns and FREEDOM!

[RhynoCZ]

We were trying to find the origins of the rotor.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[stinkwheel]

It's the 4-bolt hub that's the odd thing. Can't find a guzzi that uses only 4 bolts to hold the carrier to the hub. BMW do.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[temeluchus]

now I've woken up and had a coffee, it does resemble a Triumph T140 brake disc.

**edit**

I've had a skim, triumphs, some older BMW's and hondas use a similar 4 bolt patter for their discs. The R80 and R100GS had single disc hubs I think, but they don't look like that.
____________________
Some shite cruiser. Now with guns and FREEDOM!