Build for Heavy Rider

Hi guys,

I am helping someone building a strong bike, my friend is around 115kg/18 stone. He has been riding a Carbon Bike for ages and has experienced a lot of issues, either in the BB, crankset, or wheels.

I got him a steel frame which he is very happy about, now after a month of riding he needs to look at a solid BB as he manage to completely destroy a Tage Square taper (more specifically the cups), otherwise the bike is alright.

What do you guys recommend in terms of BB/Crankset for abuse? - I was thinking maybe a sugino 75 BB?

wheelset wise, currently has Halo AeroRage
I suggested to him the Velocity Chukkers+BLB King Hubs maybe with straight spokes 2mm or something like that?

Also any other tips are very welcome!

Thanks

Does he have any problems with the wheels?
115kg is not too bad, I guess most track parts will be strong enough, I would replace the bb with a Shimano bb-un55 and if that also breaks get some external bb track cranks.
Also double butted spokes are less likely to break than straight ones, because they almost always break at the head of the spoke and the double butted ones can stretch a bit more

Second vote for a UN55.

115kg is not too bad, I guess most track parts will be strong enough,

Second this. A lot of the big sprinters must be getting on for that kind of weight.

I'm about in that range, I prefer external bb cranksets for this reason. Have had less issues with them personally. As for wheels generally 36h double wall whatever and I have been fine. But also ride silly carbon front wheels a fair bit without issues. Just running a bigger tire helps a lot. I try to stay with 28c or higher.

He is using 38C atm, on a 32H rims that he will upgrade later - suggested him 36H or more, like a Velocity Chukker per example.

in terms of BB/crankset
I think the UN55 has been suggested quite a lot around the web and if it breaks, it's a cheapo to replace.

Thanks a lot everyone for the input of your experience, very helpful!