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Front Rim Damage
« on: January 21, 2021, 10:11:38 pm »
Guys, is this repairable? If so who /where can it be sorted for me? Jhb or Pretoria preferably



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Offline Mikie

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Re: Front Rim Damage
« Reply #1 on: January 22, 2021, 07:52:20 am »
Thats a nasty ding, unfortunately I dont know of any places up here, but Jughead sorted mine out a few years back when I p[assed through there, he did an amazing job
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Offline Lord Knormoer

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Front Rim Damage
« Reply #2 on: January 22, 2021, 08:06:41 am »
I just replaced mine...cannot even see the damage with the naked eye. Was told by Bavarian that it cannot be repaired.



Apparently itís buckled. Iíd be keen to know of anyone does do repairs, then Iíll keep the old one for backup. At present itís about to become a wall clock.
« Last Edit: January 25, 2021, 05:44:26 pm by Lord Knormoer »
 

Offline BullSmit

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Re: Front Rim Damage
« Reply #3 on: January 22, 2021, 08:16:51 am »
Try Hi-tech Mag Repairs in Alberton - (011) 900-341.

The sorted a rather large ding in the front rim of my NCX.

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Offline IanTheTooth

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Re: Front Rim Damage
« Reply #4 on: January 22, 2021, 08:25:25 am »
Being a BMW it is unrepairable but for other bikes it is quite an easy job. I've just done a few on mine. Aluminium becomes very malleable between 220 and 260C. Most time consuming bit is dismounting the tyre and mounting the tyre. The temperature is quite easy to judge when you are straightening up a lever or handlebars but more tricky with a rim. I found an IR thermometer solves the problem. They are dirt cheap now. Remember Aluminium will be softer and more malleable after heating. Steps are:
Dismount tyre and rubber bits like the valve if it is close;
Find a jack or expanding threaded object that will go between the hub and the rim. I used a trolley jack with the wheels taken off with rubber inner tube on the rim and a piece of aluminium bent to the right sort of circumference on the rim.
Remove the spoke in the way if required
Heat with a gas torch until  mid 200's
expand out with tool. A little bit shy is OK and the bead will sit but if you push it too far the tyre won't seal and you have to push it back in again. Don't ask me how I know.
You HAVE TO RESET THE SPOKE TENSIONS. They will all be loose.
Put the tyre back on with a new valve if required. Remember they pull through, don't push.
Put wheels back on the bike.
Don't bother telling anyone. They won't believe you or they will wonder why you are so f#cking stupid to do such a thing.
« Last Edit: January 22, 2021, 08:25:53 am by IanTheTooth »
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Online DavidMorrisXp

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Re: Front Rim Damage
« Reply #5 on: January 22, 2021, 10:00:07 am »
Is there not an Excel alternative rim?
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Offline Lord Knormoer

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Re: Front Rim Damage
« Reply #6 on: January 22, 2021, 10:27:17 am »
Is there not an Excel alternative rim?
Not for the 1200 unless you want to use tubes. The BMW tubeless rim design is proprietary and may not be copied.
 

Offline Boersoeknbike

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Re: Front Rim Damage
« Reply #7 on: January 24, 2021, 06:05:29 pm »
Theres a Chinese couple close to Conrad OffRoad cycles. They do repair these rims. Yours look repairable. They called BG wheels. I was happy with service
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Offline Welsh

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Re: Front Rim Damage
« Reply #8 on: January 25, 2021, 06:47:51 am »
I would try CYTEC in the south, they know what they are doing.  :sip:
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Offline SlŠinte Mhaith

Re: Front Rim Damage
« Reply #9 on: January 25, 2021, 07:55:25 am »
I just replaced mine...cannot even see the damage with the naked eye. Was told by Bavarian that it cannot be repaired.

Apparently itís buckled. Iíd be keen to know of anyone does do repairs, then Iíll keep the old one for backup. At the present itís about to become a wall clock.

Interesting. Many moons ago Bavarian quoted me for rim repair.  They said they used a guy in Pta North.
 

Offline FrancoisTz

Re: Front Rim Damage
« Reply #10 on: January 25, 2021, 09:06:12 am »
I would try CYTEC in the south, they know what they are doing.  :sip:
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Offline Jughead

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Re: Front Rim Damage
« Reply #11 on: January 25, 2021, 09:26:00 am »
Whether it can be repaired or not depends on where the ding is and whether the ding has actually caused the aluminium to fracture along the spoke hole.  Sometimes it will only fracture on the outside, sometimes both sides. 

If it is fractured both sides, then 1. I would not trust it on my own bike and 2. you will have a perpetually deflating front wheel as the air escapes throught he crack.
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Re: Front Rim Damage
« Reply #12 on: January 25, 2021, 05:07:06 pm »
I would try CYTEC in the south, they know what they are doing.  :sip:

Yes they have a good reputation for fixing BMW wheels really well.
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Re: Front Rim Damage
« Reply #13 on: January 25, 2021, 05:08:55 pm »
I just replaced mine...cannot even see the damage with the naked eye. Was told by Bavarian that it cannot be repaired.



Apparently itís buckled. Iíd be keen to know of anyone does do repairs, then Iíll keep the old one for backup. At the present itís about to become a wall clock.

Who fixed it?
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Re: Front Rim Damage
« Reply #14 on: January 25, 2021, 06:27:34 pm »
Cytech laced my 21" front rim, very reasonable and nicely done.  8)
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Offline Lord Knormoer

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Re: Front Rim Damage
« Reply #15 on: January 25, 2021, 06:58:08 pm »
I just replaced mine...cannot even see the damage with the naked eye. Was told by Bavarian that it cannot be repaired.



Apparently itís buckled. Iíd be keen to know of anyone does do repairs, then Iíll keep the old one for backup. At the present itís about to become a wall clock.

Who fixed it?
Not fixed, replaced. Still have the slightly damaged rim. Might fix and keep/sell.
 

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Re: Front Rim Damage
« Reply #16 on: January 25, 2021, 07:12:11 pm »
Mine was more the Mike GS smiley, plus a bit, couldn't believe it stayed inflated, I hit a lurker in dust chasing a couple of 9XX KTM,s on the old 1150, front end jumped about a foot to the right in the corner when I hit the lurker.  :o
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Re: Front Rim Damage
« Reply #17 on: January 25, 2021, 07:43:58 pm »
Guys, tks for all the advice. Mine holds air 100%. This one happened going up Katberg pass.  It has a nice wobble when I'm doing about 100km/hour but I need it sorted.

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Re: Front Rim Damage
« Reply #18 on: January 25, 2021, 08:02:51 pm »
I would say you are very lucky it is holding air. I would let Cytech give you a quote, and let us know where you go with this. I also have a front that I want trued.
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Re: Front Rim Damage
« Reply #19 on: January 25, 2021, 08:28:58 pm »
I would say you are very lucky it is holding air. I would let Cytech give you a quote, and let us know where you go with this. I also have a front that I want trued.
Having some knowledge of these rims, I would think its a strip, roll/press it and re-lace it, but no expert.  :thumleft:
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