TSDZ2 Stronger BB Spindle

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
Post Reply
beardydave   10 µW

10 µW
Posts: 6
Joined: Jul 15 2019 1:42pm

TSDZ2 Stronger BB Spindle

Post by beardydave » Jan 23 2020 7:21pm

Hello!

I'm having problems snapping BB spindles at the groove where the circlips locate. I am a heavy and strong cyclist, I've destroyed plenty of BB and pedal spindles and cranks in my time, but I've done three of these in the last year (approx one every 1,000 miles) and I'm a bit fed up of it. So I've asked around and found a couple of companies that are willing to look at producing a stronger version.

I was planning on getting it made identical to the existing one but in hella strong steel and without the circlip grooves, which clearly act as a stress riser exactly where you least want one. I was planning to instead retain the bearings (or locate the spindle, depending how you look at it) using thin sleeves with wavy washers locating against the inside of the crank arms.

Has anyone tried this before?
Any other solutions to this problem?
Any comments / advice on this proposal?
And finally would anyone be interested in buying one of these if I do get them made? 10 of them would be cheaper per unit than 2! No idea on actual cost yet.

Cheers

dameri   100 W

100 W
Posts: 147
Joined: Sep 20 2018 10:57am

Re: TSDZ2 Stronger BB Spindle

Post by dameri » Jan 24 2020 10:14am

beardydave wrote:
Jan 23 2020 7:21pm
Hello!

I'm having problems snapping BB spindles at the groove where the circlips locate. I am a heavy and strong cyclist, I've destroyed plenty of BB and pedal spindles and cranks in my time, but I've done three of these in the last year (approx one every 1,000 miles) and I'm a bit fed up of it. So I've asked around and found a couple of companies that are willing to look at producing a stronger version.

I was planning on getting it made identical to the existing one but in hella strong steel and without the circlip grooves, which clearly act as a stress riser exactly where you least want one. I was planning to instead retain the bearings (or locate the spindle, depending how you look at it) using thin sleeves with wavy washers locating against the inside of the crank arms.

Has anyone tried this before?
Any other solutions to this problem?
Any comments / advice on this proposal?
And finally would anyone be interested in buying one of these if I do get them made? 10 of them would be cheaper per unit than 2! No idea on actual cost yet.

Cheers
Sorry I don't have solution for your problem. But maby you ask this thread, there is lot of discussion of TSDZ2 motors.
https://www.endless-sphere.com/forums/v ... 28&t=79788

Post Reply