BMW K bikes (Bricks)

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1Back to top Go down   Front wheel bearing query Empty Front wheel bearing query Thu Feb 04, 2021 2:02 pm

Suzi Q

Suzi Q
Life time member
Life time member
Aha, I think I might be able to sneak a non-bmw query past the mods.....on a ridiculous pretext!

Maybe a question for Dai and Dai alone,  but just supposing you wanted to to replace the bearing fitted inside the rear sprocket/brake drum on a Enfield Bullet 500, would you consider using one of your spare 25x47x12 bearings from your stock of K100 fronts? Is it the same bearing?

See, it's a K-series query!


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Sometimes I'm not really Suzi Quatro.
    

2Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Thu Feb 04, 2021 5:23 pm

Dai

Dai
Life time member
Life time member
You know what? I think Stu can answer that one better Very Happy You said the magic words 'brake drum'. Mine's got discs all round but Stu's a drummer boy.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Thu Feb 04, 2021 11:57 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
chris846 wrote:Aha, I think I might be able to sneak a non-bmw query past the mods.....on a ridiculous pretext!

Maybe a question for Dai and Dai alone,  but just supposing you wanted to to replace the bearing fitted inside the rear sprocket/brake drum on a Enfield Bullet 500, would you consider using one of your spare 25x47x12 bearings from your stock of K100 fronts? Is it the same bearing?

See, it's a K-series query!
Ha! If you'd started the thread in the General Discussion or Off Topic sections no one would've been the wiser, or have given it a care. Otherwise, I reckon a whole heap of us have 'other' brands in our garage or shed that we are just cryin' to talk about here.
Front wheel bearing query 652573


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1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

1977. It was a very good year. Somewhere.
    

4Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Sat Feb 06, 2021 4:00 am

tinyspuds

tinyspuds
Life time member
Life time member
chris846 wrote:Aha, I think I might be able to sneak a non-bmw query past the mods.....on a ridiculous pretext!

Maybe a question for Dai and Dai alone,  but just supposing you wanted to to replace the bearing fitted inside the rear sprocket/brake drum on a Enfield Bullet 500, would you consider using one of your spare 25x47x12 bearings from your stock of K100 fronts? Is it the same bearing?

See, it's a K-series query!
Chris,
The oem item on mine is 
[size=40]5/8 x 1.9/16 x 7/16" [/size]
so doesn’t look like a match. That said, mine is a ‘54 350cc. Hitchcocks has a decent interactive parts manual which may say different for yours.
Stu


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

5Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Sat Feb 06, 2021 4:15 am

Suzi Q

Suzi Q
Life time member
Life time member
Cheers Stu. I really appreciate your help.
The bike (generous term, it's a few boxes of bits plus some ambition) is one of the 1970s Enfield exports that appeared from a time warp back on the UK market. Plus, it's not mine - a friend asked me to look at a replacement pattern rear hub that arrived from Indian India.
I thought (wrongly, happens often) that I'd be looking for an imperial bearing. Turns out it's metric. Second mistake; it measures at 25x47x12, and this seemed a familiar size to me, which it was, but only because I've been in the habit of fitting front wheels from a oilhead boxer onto KTM forks, for some reason.
Total wild goose chase, plus early onset dementia on my part. Dragged the forum down again. Can only apologise.  Front wheel bearing query 610153


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

6Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Sat Feb 06, 2021 6:50 am

tinyspuds

tinyspuds
Life time member
Life time member
Chris, No apols needed, gotta keep all this old kit going or lose it forever. That said, as a UK vintage owner, the 70s is quite a rabbit hole where the Indian models are concerned. Theoretically they were using the 1960 engine patterns and tools with metric bearings. I’m not so sure about the cycle parts. Good luck.


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

7Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Sat Feb 06, 2021 7:21 am

Dai

Dai
Life time member
Life time member
Half and half. Measure first, cuss later Very Happy


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

8Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Sat Feb 06, 2021 10:24 am

Suzi Q

Suzi Q
Life time member
Life time member
Been watching youtube videos of guys fixing these things with the most rudimentary tools, puts me to shame. Love the pattern parts industry too - even though the quality might be varied, the low cost means that these things can expect to keep running for ever which is brilliant given that they are essential transport for a sub-continent.
I think the guy who gave me the rear hub to look at, knew that this bit had fallen apart:
Front wheel bearing query Img_3512

But a bit of brass later...
Front wheel bearing query Img_3513  Love the 'Heavy Duty' & 'New Model' stickers  Very Happy

Question for Stu (not Disc Brake Dai): do the originals have O-ring or seals in there - seems like monsoon season would wash away the grease/eucalyptus oil on the cam?


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

9Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Sat Feb 06, 2021 2:19 pm

Dai

Dai
Life time member
Life time member
You do NOT want to go riding in the monsoon...



One day of it was enough.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

10Back to top Go down   Front wheel bearing query Empty Re: Front wheel bearing query Tue Feb 09, 2021 11:05 pm

tinyspuds

tinyspuds
Life time member
Life time member
Chris, I don’t believe there are seals. Maintenance regime is to grease the cams.

Front wheel bearing query F0aead10


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

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