bobb Posted August 9, 2021 Report Share Posted August 9, 2021 Hello, I broke the hub on my beta last week. The 4 mounting points for the sproket broke off. Anyone else had these issues? I bought it of a mate in the UK and used it not that much. I ride the level under expert in Belgium club trials. UK importer will put a new hub in my wheel so no complaints there ! Is there anything i could do to make sure it doesnt happen again ? Kind regards Bob Quote Link to comment Share on other sites More sharing options...
mcman56 Posted August 9, 2021 Report Share Posted August 9, 2021 I know someone who had the same kind of failure. He suspects that the sprocket bolts got loose and led to the failure so was extra careful with reassembly using good, bolts, washer, thread locker, etc. It sounds like lacing those rims is no easy task. Quote Link to comment Share on other sites More sharing options...
reggie Posted August 9, 2021 Report Share Posted August 9, 2021 There are no superfluous fasteners on a modern day trials motorcycle ( all brands ) Modern day trials motorcycles need all of their nuts and bolts to be tight, so that everything works properly. The ONLY way to be sure that the nuts and bolts are tight is to check them. Particular attention should be given to brake disc bolts and rear sprocket bolts. Quote Link to comment Share on other sites More sharing options...
johnnyboxer Posted August 10, 2021 Report Share Posted August 10, 2021 (edited) 19 hours ago, mcman56 said: I know someone who had the same kind of failure. He suspects that the sprocket bolts got loose and led to the failure so was extra careful with reassembly using good, bolts, washer, thread locker, etc. It sounds like lacing those rims is no easy task. I expect the cause is something to do with a 'lighter' design of rear sprocket that is 'open' between the sprocket fixings, unlike a continuous ring of metal, around all of the 4 sprocket bolts, that features on older bikes Edited August 10, 2021 by johnnyboxer 1 Quote Link to comment Share on other sites More sharing options...
bobb Posted August 10, 2021 Author Report Share Posted August 10, 2021 21 minutes ago, johnnyboxer said: I expect the cause is something to do with a 'lighter' design of rear sprocket that is 'open' between the sprocket fixings, unlike a continuous ring of metal, around all of the 4 sprocket bolts, that features on older bikes That may well be the case here, i had one of those sprockets on my bike. My bolts were tight, i got the bolts replaced by better quality ones and locknuts when i got the bike. on the new hub i will fit an older style sprocket Quote Link to comment Share on other sites More sharing options...
lineaway Posted August 10, 2021 Report Share Posted August 10, 2021 Also runnimg your chaIn too tight can do it. Quote Link to comment Share on other sites More sharing options...
reggie Posted August 10, 2021 Report Share Posted August 10, 2021 4 hours ago, lineaway said: Also runnimg your chaIn too tight can do it. Good info ! Quote Link to comment Share on other sites More sharing options...
portman Posted August 10, 2021 Report Share Posted August 10, 2021 Excellent customer care by Lampkins. One hears anecdotal stories from time to time but here's some confirmation that the stories must be true! Quote Link to comment Share on other sites More sharing options...
bobb Posted August 13, 2021 Author Report Share Posted August 13, 2021 a mate is on his 3th rear hub now, every time replaced in warranty. So there must be something wrong with those hubs, nothing wrong with beta service. Does enyone know if an other brand rear wheel would fit into a beta ? Quote Link to comment Share on other sites More sharing options...
Neil Livewire Posted August 13, 2021 Report Share Posted August 13, 2021 16 minutes ago, bobb said: a mate is on his 3th rear hub now, every time replaced in warranty. So there must be something wrong with those hubs, nothing wrong with beta service. Does enyone know if an other brand rear wheel would fit into a beta ? This will be one of the reasons Jitsie supply solid rear sprockets https://www.jitsie.com/en/rear-sprockets/46364-closed-rear-sprocket-bt2806.html Quote Link to comment Share on other sites More sharing options...
b40rt Posted August 13, 2021 Report Share Posted August 13, 2021 1 hour ago, Neil Livewire said: This will be one of the reasons Jitsie supply solid rear sprockets https://www.jitsie.com/en/rear-sprockets/46364-closed-rear-sprocket-bt2806.htm You would think Beta would inform customers to only use solid sprockets ? Quote Link to comment Share on other sites More sharing options...
ChrisCH Posted August 14, 2021 Report Share Posted August 14, 2021 OK - I am a bit thick here. What difference does the sprocket make? The forces on the hub are the same irrespective of the format of the sprocket surely? 1 Quote Link to comment Share on other sites More sharing options...
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