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So I had (1) a 29er rim, a load of random spokes and a hub (2) a desire to try 650B+ (3) the tight-fistedness only surpassed by a Yorkshireman and (4) lots of free time alone like all Big Hitters.
So I cut the rim down, re joined it with araldite, laced it in a ****ed up pattern, and it's come out OK.
*no rolling actually occurred. Just waiting on druidh lending me a tyre
https://www.flickr.com/photos/7693620@N05/albums/72157665382193185
You don't need us to tell you why this is a bad idea do you? 😐
Go on...
EDIT actually if all you're going to say is it won't work then don't bother 🙂
What size are your boots?
[quote=scotroutes ]How much of an experiment Al? I have a FatBNimble sitting in the garage at the moment as I'm running a Nobby Nic up front until things dry out a bit. You could borrow it for the cost of postage (unless we can sort something out by mlehmail). The FBN is labelled as a 3.5 but is the same width as my NN 3.0.
Email/message me
Top bodgery. Well done!
Did you use a spoon?
Please film the first rocky descent...
Actually interested in how long it manages to avoid catastrophic failure.
Woah. Impressive. There is no way in hell you could induce me to ride a bike with that thing stuck in the frame. Sir, I salute your total disregard for your personal safety and life in pursuit of intergalactically terrifying bodgery, truly you are pushing the boundaries of what's possible in pursuit of that Darwin Award...
How many of you know anything about building wheels and how rims are held together?
Wire beaded tyres?
Built loads of wheels, thanks, understand the theory well enough. Rather you than me is all. 🙂
in awe 🙂 bestest bodge ever
...until the next one of course
did Keith Brontrager not used to do that?
No rationale then, mint?
Kind of makes your words meaningless.
It's an experiment anyway, not expecting a long life from it
Sorry, I didn't really mean my comment as a criticism! Well, bit of fun poking maybe, but no more, I'm honestly impressed, really. You're obviously doing this to see how much of a bodge you can get away with. And that's great! I was only being a little bit sarcastic for effect, sorry, mostly I think this is just very impressive dedication to shed-based nutter-engineering - it is a bit nuts, you have to admit.
I'd still not ride it though, I have a kid to pay and a mortgage to worry about. The spoking pattern is the main problem I have with it, it's uneven and will lead to stress in weird places followed by (possibly sudden unnanounced) collapse.
Cool, but I disagree 🙂 I'll report back.
I understand little - can I ask about spoke spacing, where you cut the chunk out?
Those FBNimbles are slack beaded, so hope you cut out less rather than more.
The cut was almost exactly 2 spoke holes worth. Tried a folding sbc tyre on, it was neat.
Lacing started off followings a pattern but a 32h hub into a 30h rim got random quickly.
Lacing started off followings a pattern but a 32h hub into a 30h rim got random quickly.had me giggling over my breakfast 🙂
The actual spoking is the only issue there.
Cutting and gluing a wedge in is how rims have been made for decades.
Some don't even both with the glue, just knurled and wedged in lump (wouldn't think you'll find anything like that on a bike over 50 quid!)
And it's got no braking surface to worry about either.
32 to 30. Did you get stoned first?
I find your lack of spoon disturbing.
not expecting a long life
No; really?
awesome !
pinned as well, by the looks - booo, that's not fair 🙁
did you close your eyes and pull your shitting face while you were tensioning it up ?
Ha, good bodging!
You should have drilled 2 more holes...or redrilled for 32 spokes?. Surely quite a few existing holes would have lined up. Top bodge though 😯
What you really need - and I covet this device - is a rim drilling machine:
[img] 
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Fair play cynic-al, top job. Hope it works out for you.
Just a thought, but weren't a lot of the old Klunker rims cut & re-joined by Tom Ritchey, as they wanted lightweight rims which were only available to roadies? They seemed to get a proper hammering...
If I'm correct then it's also the reason we ended up with silly narrow rims for fat tyres all those years ago.
Would you prefer flowers our a donation to your favourite charity?
rim drilling machine:
Torture machine or bicycle tool?! Bet now!
You can't tell from the name or the picture! 😉
I can't see the picture but if the rim is pinned rather then just a dab of araldite on the cut ends I'd expect it to be fine.
best thread in ages - I salute your engineering prowess. chemical metal up the hub holes and redrill in correct placement for bonus points
I applaud you Sir.
I have no idea why this wouldn't work.
Interested to hear how you get on.
I am disappointed though regarding the lack o spoon. Couldn't you just of said one or part of one was is there somewhere?
Just a thought, but weren't a lot of the old Klunker rims cut & re-joined by Tom Ritchey, as they wanted lightweight rims which were only available to roadies?
I think you're thinking of Bontrager cutting down ally road rims to 26" as alluded to earlier.
Top bodgery, and I bet it will take a lot of abuse before the funny spoking becomes a major issue assuming a half decent build. Wheels are not the mysterious magic some people seem to think!
Top bodgery, and I bet it will take a lot of abuse before the funny spoking becomes a major issue assuming a half decent build. Wheels are not the mysterious magic some people seem to think!
Probably has better tension than most factory wheels all the scaredy cats above run.
impressive bodgery cynic-al. reminds me of the time you built your own disc mount on a fork. where you made the cut on the rim i presume you crossed the spokes form the hub so the spokes help hold the join together?
if you die....i want first dibs on your bikes!! 😆
More likely they'll be held for the inquest and then destroyed.
how will/have you tested the wheel?
Brilliant.
Front or rear wheel?
Footage of you riding it off-road or it didn't happen. And proper off-road where you'd actually ride a 275+ bike, not just a dull fire road otherwise what's the point?
Well done for experimenting and trying stuff out. I'm sure you're confident in how it works otherwise you'd not have done it.
Tom KP
Ps - don't let the naysayers put you off.
The 30h would concern me far more than the cut and shut.
That said, the worst that's likely is you'll break a few spokes or rip the hub flangesup.
Out of interest, when you cut and joined it, was the "new" rim perfectly round before it was laced and trued, or did you have to make it round when tensioning?
Sooo cool! Let us know how it goes.
My first reaction was oooer, then when you think about how the strength of the wheel is in the build of the wheel it should be alright.
Is there tension (dunno if that's the right word) in the rim trying to uncurl to its previous size, or did you shape it?
Didn't the wheelsmith fella build wheels with cut rims? Assuming you've got good tension I guess it should be OK for a while (I'm a crap wheel builder but none of my shonky wheels have failed) but getting "good" tension with dodgy lacing could be the issue.
Top bodging...
So, assuming that the join has been pinned as well as glued together, why do people assume this would not be okay? Isn't this just how rims have been made for a very long time?
Probably something to do with taking aluminium... and re-bending it... cutting it.. pinning it (again)... and building it up into a wheel with miss-matched spoke holes..
Impressed at the commitment though.
Would probably only risk 'riding' it on the rear, for me.
Thanks all. The rim wasn't re bent (I tried but don't have the strength/heft). It's glued and pinned.
Initially spoke tension was all over the place but the tension is pretty even.
Good to see some folk posting that have a clue!
Did you keep the off cut so you can make a 27.5" rim out of a 26" rim for the other wheel?
Lol, yes!
Im trying to work out a way of sticking a 2nd diy 650B rim onto it to run 3"+ tyre.
Wouldn't attempt it myself - but looks good and well done.
Confused.
If you take a circle and cut a part of its circumference out, then join the two ends to make a smaller circle, you end up bending the bits of the original circle. Unless you mange to bend non-Euclidian space-time instead. Just an observation. Not being obtuse 😉
Yeah, but you could re-bend (roll) the rim so that the ends lined up without the pins, or rely on the strength of the pinned joint (and spokes) keeping it together. I think Al is suggesting he only did the latter.
Not bent meaning not permanently deformed into holding its own shape.
Yes you are 😉
Jobst speculates/calculates in his book that the compressive force on a rim joint like that, when the wheel is built is about a 4 ton compressive force.
So long as the joint is cut square and properly angled, stuff pulls together fine. I did some 40h ma2's to 36h 26in ones back in the day.
Did you manage to cut the correct amount out of the middle of each spoke to make them fit? I'm imprezzled.
FAIL-A-GEDDON
Bodgezilla! 😛
I salute you, but am slightly disappointed at how un-bodgy it looks. Ride it like you cut-and-shut it!
does anyone if the OP is still alive??
Brilliant bodgery.
What will you charge to make me a 32er or a 36er.
The op is alive and well and [url= http://singletrackmag.com/forum/topic/cheap-sh-car-musings ]looking for a deathtrap to claim his life instead[/url].