Search found 191 matches

by iandusud
28 Dec 2018, 1:03pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

What did you have in mind re modifying the rim?
by iandusud
28 Dec 2018, 12:34pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

Yes,I suppose the tube was acting as a spring. What are your thoughts on the wheel build. I like to keep the spokes as near to a tangent as poss with the drum brake but don't like the look of the bend near the nipples.
by iandusud
28 Dec 2018, 8:59am
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

Update: I welded I fillet on the major bend of the steering tube and the wobble has gone. So it would appear that my suspicion was correct. https://lh3.googleusercontent.com/QQkHpgdsRnup5cePeElxYzfeWme07LVvna3bWr93hQhBitkT7-1FHsdDB3JzUKnPtT5W10slh3LFTLbv2HHlRRO91nDyZoAxhBltyP7jTC4_wqKmhJ_o2j8hkZ8_j2...
by iandusud
27 Dec 2018, 10:42am
Forum: Bikes & Bits – Technical section
Topic: Removing BB woes.
Replies: 15
Views: 752

Re: Removing BB woes.

If you have access to welding equipment the easiest way might be to weld an old 1/2" drive socket to the bb cup and get a breaker bar on it.
by iandusud
27 Dec 2018, 9:11am
Forum: Bikes & Bits – Technical section
Topic: The strange case of the Continental Grand Prix 5000 TL
Replies: 15
Views: 1470

Re: The strange case of the Continental Grand Prix 5000 TL

Nobody on here will pay that much for a tyre! I had 2 of the 4000s fail on the sidewalls, I'll stick to my Gatorskins at £23 from the wiggle thanks. I've used GP4000s tyres exclusively on my road bikes for the last 5 years with no problems whatsoever. I ride all year round often on some rough track...
by iandusud
24 Dec 2018, 6:34am
Forum: Bikes & Bits – Technical section
Topic: Removing stuck crank: best method
Replies: 14
Views: 707

Re: Removing stuck crank: best method

Heat. As the cranks are alloy on a steel bb axle they will expand at a higher rate. Carefully with a blow torch or better still a hot air gun. Brucey's method with a kettle of boiling water would be a good option as well. Once hot if they don't come off easily with the puller then tighten the puller...
by iandusud
21 Dec 2018, 7:00am
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

I agree that fitting a motorcycle steering damper is probably the easiest way though. That's what I said :D Seriously, thanks for all your thoughts. I really appreciate your lateral thinking as I'm always looking for alternative ways of doing things, particularly ones which recycle stuff I have lyi...
by iandusud
20 Dec 2018, 4:50pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

I do like your thinking but I think any friction damping system needs to be adjustable to compensate for wear etc. I'm still thinking about DIY/salvage options eg using gas struts; if of the type with ball joints at the end, they need not be mounted exactly orthogonal to the fork; they could (for ex...
by iandusud
20 Dec 2018, 4:44pm
Forum: Bikes & Bits – Technical section
Topic: Plus Ca Change...
Replies: 95
Views: 3343

Re: Plus Ca Change...

Personally I think the threadless headset is an abomination. The idea that you have to preload the bearing to get the play out of it is IMO bad engineering practice. The only situations where bearings are preloaded as a normal procedure is where the assembly is going to heat and expand to remove th...
by iandusud
20 Dec 2018, 9:27am
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

Funnily enough I had the same idea about putting an old inner tube over the headset but came to the conclusion that over small oscillations it would act more like a spring than a damper.
by iandusud
20 Dec 2018, 9:06am
Forum: Electric bikes
Topic: Opinions on this motor drive on tyre itself
Replies: 19
Views: 1420

Re: Opinions on this motor drive on tyre itself

Due to the low battery capacity the appeal of this unit, as I see it, is for extra help up the hills. However as I see it the drive is permanently engaged with the tyre so will induce drag when not being used as pedalassist. Also there is little information on the power characteristics of the motor....
by iandusud
20 Dec 2018, 8:55am
Forum: Electric bikes
Topic: Opinions on this motor drive on tyre itself
Replies: 19
Views: 1420

Re: Opinions on this motor drive on tyre itself

Solex mopeds with tyre drive used a very heavy tyre due to the tyre wear incurred from the drive.
by iandusud
20 Dec 2018, 8:16am
Forum: Bikes & Bits – Technical section
Topic: Plus Ca Change...
Replies: 95
Views: 3343

Re: Plus Ca Change...

Personally I think the threadless headset is an abomination. The idea that you have to preload the bearing to get the play out of it is IMO bad engineering practice. The only situations where bearings are preloaded as a normal procedure is where the assembly is going to heat and expand to remove the...
by iandusud
20 Dec 2018, 7:50am
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

Brucey, I like your thinking as I'm always looking for good cheap DIY solutions to problems, especially ones that recycle otherwise redundant bits . The damper needs to be mounted high on the fork to clear the mudguard, giving a limited length for the strut. It probably needs to around 13cm when ful...
by iandusud
19 Dec 2018, 5:58pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer Hub Brakes
Replies: 51
Views: 2090

Re: Sturmey Archer Hub Brakes

Hi Bruce, Thanks again for your input and interesting idea re gas struts. However the big advantages of the motorcycle steering damper is that is the damping is adjustable and doesn't have fixed centres which makes life a lot easier. In fact I have little room to play with and have found what looks ...