Has anyone seen Polo mint shaped hub flange adapters with drilled holes, to fit say a 28H hub to a 32H rim? The inner 28H bolted onto the hub flange, the outer 32H spoked.

Edited November 25, 20241 yr by guerney

Entirely at your own comprehensively assessed risk, you could drill four extra holes in the hub, and accept slightly less than perfect symmetry in the spoke pattern. Two each side, 180 degrees apart, midway between existing holes.

 

Or make a complete set of new holes in the rim, aligned to maximise distance between your 28 and the existing 32.

 

Or change to a 32 spoke hub and rim.

Or change to a 32 spoke hub and rim.

 

I would, but unfortunately hubs for 32H are very rare and fabricated from Unobtanium for 74mm wide Dahon fork droputs.

 

 

Entirely at your own comprehensively assessed risk, you could drill four extra holes in the hub, and accept slightly less than perfect symmetry in the spoke pattern. Two each side, 180 degrees apart, midway between existing holes.

 

Or make a complete set of new holes in the rim, aligned to maximise distance between your 28 and the existing 32.

 

I was wondering how bad the outcome of drilling holes could possibly be. I have found three flange spoke hole adapters, for specific hubs. But nothing cheap and mass produced by the Chinese.

 

https://classic-cycle.com/144-hole-flange-adapter-134-mm/RD-FA-134

 

https://classic-cycle.com/All/531/140-spokes-flange-adaptor-for-shimano-3-Speed-Hub

 

https://www.unicycle.co.uk/adaptor-for-schlumpf-hub.html

 

 

 

Seems the maximum width tyres my old Dahon can practically have is 2.125 inch. Was hoping to fit these Ryde Andra rims [mention=38589]Cadence[/mention] brought to my attention on another thread, for up to 69mm wide tyres:

 

https://www.sjscycles.co.uk/rims-tape/ryde-andra-40-20-inch-406-rim-black-32-hole/

I would, but unfortunately hubs for 32H are very rare and fabricated from Unobtanium for 74mm wide Dahon fork droputs.

 

 

 

 

I was wondering how bad the outcome of drilling holes could possibly be. I have found three flange spoke hole adapters, for specific hubs. But nothing cheap and mass produced by the Chinese.

 

https://classic-cycle.com/144-hole-flange-adapter-134-mm/RD-FA-134

 

https://classic-cycle.com/All/531/140-spokes-flange-adaptor-for-shimano-3-Speed-Hub

 

https://www.unicycle.co.uk/adaptor-for-schlumpf-hub.html

 

 

 

Seems the maximum width tyres my old Dahon can practically have is 2.125 inch. Was hoping to fit these Ryde Andra rims [mention=38589]Cadence[/mention] brought to my attention on another thread:

 

https://www.sjscycles.co.uk/rims-tape/ryde-andra-40-20-inch-406-rim-black-32-hole/

What are you trying to achieve? Why don't you buy a new wheel, which would be cheaper? About £35 a pair on Aliexpress for disc ones if you want to convert, or get crappy rim brake ones.

Edited November 25, 20241 yr by saneagle

Or find a CNC workshop that can make them to order. The first example shows the right design idea: the recess sits on the existing flange and is a close fit. Bolted through every old spoke hole for even load distribution.

 

Probably stainless steel rather than aluminium, to reduce fatigue risk.

 

It would be a one time adaptation, so a one off cost.

What are you trying to achieve? Why don't you buy a new wheel, which would be cheaper?

 

The option of fitting fatter tyres more easily on an ongoing basis, in the face of increasing rarity and diminishing range of hub flange hole options, for my Dahon's 130mm and 74mm dropouts. So far, I have found only two 32H hubs for 74mm, and one of them contains a daynamo - they're unicorn stools. These dudes probably don't deliver to the UK thanks to Brexit red tape, but of course I'll ask:

 

https://shop.ginkgo-veloteile.de/en/Wheel-Accessories/Hubs/front-Hubs/Chosen-front-Hub-74-mm-black.html

 

 

https://www.pedalpowerbikes.co.uk/shop/components/sub/wheels/sp-dynamo-sv8-74mm-rim-brake-dyno-hub-ultra-small-dynamo-hub-29024955/option/

 

Just seemed a bit odd if there aren't cheapo Chinese flange spoke hole adapters. Perhaps I was searching wrong, hence my question.

Edited November 25, 20241 yr by guerney

You can ebay ally plate, a ruler compass and sharp pencil should be all you need to draw an outline and hole pattern in card to validate first.. a few files a drill and a hacksaw and a few (lot off) winter evenings later

Or find a CNC workshop that can make them to order. The first example shows the right design idea: the recess sits on the existing flange and is a close fit. Bolted through every old spoke hole for even load distribution.

 

Probably stainless steel rather than aluminium, to reduce fatigue risk.

 

It would be a one time adaptation, so a one off cost.

 

Yes those do look good. With 144H, you've got 18, 24, 36 etc. possible holes, with 140H: 14, 20, 28.

 

I'll get a costing from a CNC outfit. It's just weird there aren't cheapo generic Chinese versions.

Edited November 25, 20241 yr by guerney

You can ebay ally plate, a ruler compass and sharp pencil should be all you need to draw an outline and hole pattern in card to validate first.. a few files a drill and a hacksaw and a few (lot off) winter evenings later

 

Yes it may come to that. Not looking forward to the day it becomes necessary, if it ever does. 2.125" wide should be enough for my Dahon Helios, unless poholes become even larger and deeper, which of course they will.

https://vi.aliexpress.com/item/1005003842886111.html?gatewayAdapt=glo2vnm

 

not sure if this is what you are looking for.........

https://vi.aliexpress.com/item/1005003842886111.html?gatewayAdapt=glo2vnm

 

not sure if this is what you are looking for.........

 

Yes it is! Thanks a lot! I have been searching it wrong! And they have the V-brake 32H version. Will order. Saves all of this larking about with adapter questions.

The option of fitting fatter tyres more easily on an ongoing basis, ......

So what is the inner rim width of your current wheels and what width tyres are you hoping to fit?

 

Sheldon Brown 'says' tyre widths of 1.5 to 2x the inner rim width are fine but I've read in other places of 2.5x being ok too.

https://vi.aliexpress.com/item/1005007195680032.html?src=google&pdp_npi=4%40dis%21GBP%2133.61%2131.99%21%21%21%21%21%40%2112000039764307520%21ppc%21%21%21&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&albagn=888888&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en1005007195680032&ds_e_product_merchant_id=5299122783&ds_e_product_country=GB&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=17859500389&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=CjwKCAiA3ZC6BhBaEiwAeqfvyh8tbbv7S_Ktiq2B27hRZd5ovDqPWota5z_LvLtqFIHLAZr3n7BnjBoC1cEQAvD_BwE&gatewayAdapt=glo2vnm

So what is the inner rim width of your current wheels and what width tyres are you hoping to fit?

 

At the mo, I have 1.75" Schwalbe Marathon Plus safely (according to Schwalbe's chart below) installed in rims of 19mm inner rim width. 2.125" wide is possible. All of the dual walled Chinese rims on AliExpress have 16mm inner rim width or narrower, same or similar to the original Kinetix - my 1.75" wide tyres didn't look at all happy on those. Litepro seem to make good quality stuff, but it's a pity they only offer 16mm inner rim width 406 rims!

 

 

Edited November 25, 20241 yr by guerney

https://vi.aliexpress.com/item/1005007195680032.html?src=google&pdp_npi=4%40dis%21GBP%2133.61%2131.99%21%21%21%21%21%40%2112000039764307520%21ppc%21%21%21&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&albagn=888888&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en1005007195680032&ds_e_product_merchant_id=5299122783&ds_e_product_country=GB&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=17859500389&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=CjwKCAiA3ZC6BhBaEiwAeqfvyh8tbbv7S_Ktiq2B27hRZd5ovDqPWota5z_LvLtqFIHLAZr3n7BnjBoC1cEQAvD_BwE&gatewayAdapt=glo2vnm

 

Thanks for searching Saneagle. It isn't clear from the listing if they have 74mm and 130mm, they mention 100mm and 135mm... but I could buy those just for the 32H rims. I'd prefer dual walled for stability, I couldn't find any dual walled 406 rims on AliExpress with inner rim width wider than 16mm.

The difference in supported tyre width range from 16mm to 17mm rims in that diagram is remarkable!

 

I spent a week in the Alps years ago with 2.5 inch / 65mm tyres on 17mm rims. Survived.

I spent a week in the Alps years ago with 2.5 inch / 65mm tyres on 17mm rims. Survived.

 

All the more death defying because of course your tyres would have become even wider with lower atmospheric air pressure at Alp height. I don't think Schwalbe have a safety chart for that. They'd need one for mars colonisation, after they drop nukes over the poles to melt the ice caps, and make an artificial Van Allen belt.

Edited November 25, 20241 yr by guerney

About £35 a pair on Aliexpress for disc ones if you want to convert, or get crappy rim brake ones.

 

I know [mention=16007]harrys[/mention] converted his Dahon to disc brakes, on a thread somewhere, and now that [mention=23434]esuark[/mention] has magically found 32H hubs for disc brakes on AliExpress (how!?? I can never find anything I'm looking for using AliExpress's unSearch engine!), a fat tyred disc braked Dahon Helios on wide Ryde Andra rims could be a viable option. Might just be the rear wheel, mind you [mention=18796]Sturmey[/mention] converted his front fork to disc brake using an adapter too (or was it the rear? Can't recall. Deffo was a different adapter to [mention=16007]harrys[/mention]).

Edited November 25, 20241 yr by guerney

I know [mention=16007]harrys[/mention] converted his Dahon to disc brakes, on a thread somewhere, and now that [mention=23434]esuark[/mention] has magically found 32H hubs for disc brakes on AliExpress (how!?? I can never find anything I'm looking for using AliExpress's unSearch engine!), a fat tyred disc braked Dahon Helios on wide Ryde Andra rims could be a viable option. Might just be the rear wheel, mind you [mention=18796]Sturmey[/mention] converted his front fork to disc brake using an adapter too (or was it the rear? Can't recall. Deffo was a different adapter to [mention=16007]harrys[/mention]).

use Google to search for them on Aliexpress. It understands what you want and searches for it, unlike the Aliexpress search that used to be good, but somehow they ruined it.

use Google to search for them on Aliexpress. It understands what you want and searches for it, unlike the Aliexpress search that used to be good, but somehow they ruined it.

 

I should have, but a sense of futility got to me. Things is, those bar steward merchants of cheap tat have stuffed every page with so many extraneous keywords, or advertisers have paid for too many keyword listings (sponsored ads are not marked on AliExpress), even Google is discombobulated. With this search just now, I had to trawl to Page four to find the first vaguely useful result! And is it a 32T 74mm hub? Hell no! I wondered if the AliExpress unSearch enine works better in Chinese, doubt it, tried that at one point.

 

https://www.google.com/search?client=firefox-b-e&q=site%3Aaliexpress.com+32T+hub+74mm

 

https://vi.aliexpress.com/item/1005003741495163.html

Thank you everyone for their searching of the hopelessly confounding AliExpress, and advice. Looks like I will be building my first wheels. I've merely been adjusting wheels until now, because they've been cheaper to buy than build. However, cheap new wheels are bloody rare when it becomes suddenly apparent you need new rims. While my existing front rim continues to be worn away, I can reuse my Helios's original 20H Dahon front hub... because by some miracle I found AliExpress's DeSearching Dicombombobulation Engine randomly presented me with this rim . This was so unexpected a happening, I'm still reeling from the shock.

 

According to the listing, these Rockbao rims have 20mm inner rim width. I'll believe it when I measure it. Might even be the same width all the way around. I've never seen Rockbao branded stuff before. Wasn't on AliExpress in January, but how would I know if it was? It's AliExpress.

 

https://vi.aliexpress.com/item/1005005929015035.html

 

 

The above looks very similar in size to the original rim, and as such I'm hoping I'll be able to re-use the old spokes and nipples, but knowing my luck I'll have to buy new ones.

 

Also bought this for the next rear wheel build, using one of the 28H hubs I already have. Bought another for spare 28H front or rear hubs.

 

 

Couldn't stop myself buying this Rockbao 28H front as a spare...

 

 

...all while I look further into the viability of fitting extremely fat tyres on my Dahon Helios (there may not be clearance for wider than 2.125"), with wider mudguards to match, expanding from my present 1.75" wide tyres, as the pothole situation becomes ever more horriffyingly hairy and dicey out on them thar desolate pitiless Mad Max roads.

 

 

Edited November 27, 20241 yr by guerney

The above looks very similar in size to the original rim, and as such I'm hoping I'll be able to re-use the old spokes and nipples, but knowing my luck I'll have to buy new ones.

The rims look well and are like the newer deeper rims fitted to some of the more recent hub motor kits . You may need shorter spokes but using the existing spokes and adding one more cross to the spoke pattern can use up 5 to 7mm and this sometimes works.

The rims look well and are like the newer deeper rims fitted to some of the more recent hub motor kits . You may need shorter spokes but using the existing spokes and adding one more cross to the spoke pattern can use up 5 to 7mm and this sometimes works.

 

Thanks, that's a good idea. According to Pythagoras, there isn't a massive difference in spoke length in 74mm axle vs 100mm axle 20" wheels, the latter are much more numerous, cheaper and available. Any time BankruptBikeParts have dual walled front 20" wheels with 74mm axles and wide rims, at their usual low low prices, they sell out extremely fast - blink and they're gorne. Never available when you need one. Pricey Dahon specialists CH White and his Son also sometimes run out of the wide rimmed ones, and have difficulty sourcing quality for restock. They never have the hub and wide rim combination with the right number of holes needed in stock. I'll build spare wheels using AliExpress sourced bits. I'll have to do some reading about lacing patterns. I'll load a book up on the eReader. Seems perfect reading material to nod off with, perhaps something will be absorbed by my brain overnight. There's also that book [mention=29547]AndyBike[/mention] talked me into buying, which neither of us has actually read.

 

This pattern uses entire extra centimeters, but doesn't look safe:

 

https://www.instructables.com/Twisted-Spoke-Bicycle-Wheel-Lacing---flowers!/

 

Edited November 28, 20241 yr by guerney

I'm using this spoke pattern as an excuse to give an off-topic plug to Tate Modern Lates tomorrow at 18:00 - 21:30.

https://www.tate.org.uk/whats-on/tate-modern/tate-modern-lates

I'm using this spoke pattern as an excuse to give an off-topic plug to Tate Modern Lates tomorrow at 18:00 - 21:30.

[ATTACH=full]61105[/ATTACH]

https://www.tate.org.uk/whats-on/tate-modern/tate-modern-lates

 

Nothing on any of my threads are ever off topic, not even this purple alien octopus with heirloom blue cauliflower leaves for a head containing a cat's face with humming bird for a nose thrashing it's legs about unhelpfully in clockwise fashion after finding itself rudely trapped between dimensions by the tachyon particle streams emitted by radioactive green spokes I bought from some dodgy Ukrainian website I need to build my wheel with. I've only just now put those spokes down. Art is so easy to decrypt. Taint modern morelike.

Edited November 28, 20241 yr by guerney