Search found 32 matches

by igauk
2 Apr 2019, 3:48pm
Forum: Bikes & Bits – Technical section
Topic: Tyre Pressure for Small Wheel Tyres
Replies: 19
Views: 1563

Re: Tyre Pressure for Small Wheel Tyres

Thank you Brucey, I think I understand!
by igauk
1 Apr 2019, 11:43pm
Forum: Bikes & Bits – Technical section
Topic: Tyre Pressure for Small Wheel Tyres
Replies: 19
Views: 1563

Re: Tyre Pressure for Small Wheel Tyres

volume is a complete red herring; doesn't change anything much. cheers Why is that? Genuinely interested. Surely a smaller volume tyre will need a higher pressure to support the same weight than a larger one? (all other things being equal). Is it that the variation in bike tyre volume isn't big eno...
by igauk
1 Apr 2019, 11:13pm
Forum: Bikes & Bits – Technical section
Topic: Tyre Pressure for Small Wheel Tyres
Replies: 19
Views: 1563

Re: Tyre Pressure for Small Wheel Tyres

I was contemplating this just the other day. Running 32mm Panaracer Minits on my Moulton. With an all up weight of about 90kg (say 40 front 50 rear) according to Frank Berto’s tire pressure chart I should be running 50psi front and 65psi rear. I tried these pressures briefly but they felt in danger ...
by igauk
10 Mar 2019, 10:12pm
Forum: Does anyone know … ?
Topic: Brompton equivalent
Replies: 22
Views: 4465

Re: Brompton equivalent

These have had a protracted gestation but now seem to be shipping: https://www.helix.ca/ Quality and innovation, but at about £1700 I don't think Brompton will be losing much sleep. According to https://www.bikeforums.net/folding-bikes/1051531-helix-update-80.html - they've shipped five bikes, are ...
by igauk
10 Mar 2019, 10:07pm
Forum: Bikes & Bits – Technical section
Topic: Moulton SST -- reasons (not) to buy?
Replies: 167
Views: 7392

Re: Moulton SST -- reasons (not) to buy?

To bring this thread back from off, off topic to just off topic this is an interesting article ( https://journals.sagepub.com/doi/abs/10.1243/09576509A01305 if you can find a paper copy or have deep pockets. Much of this is focused on the fully enclosed Moulton for speed records. But, according to T...
by igauk
7 Mar 2019, 9:49pm
Forum: Does anyone know … ?
Topic: Brompton equivalent
Replies: 22
Views: 4465

Re: Brompton equivalent

These have had a protracted gestation but now seem to be shipping: https://www.helix.ca/ Quality and innovation, but at about £1700 I don't think Brompton will be losing much sleep.
by igauk
7 Mar 2019, 9:30pm
Forum: Bikes & Bits – Technical section
Topic: Moulton SST -- reasons (not) to buy?
Replies: 167
Views: 7392

Re: Moulton SST -- reasons (not) to buy?

Big wheels go faster than small wheels. Nowt to do with rolling resistance or tyres or tyre pressure ................ though they do affect stuff in the real world on a bicycle. Agreed, and I think back in the day Alex Moulton only got close to rolling resistance of larger wheels becasue of his spe...
by igauk
7 Mar 2019, 4:29pm
Forum: Bikes & Bits – Technical section
Topic: Moulton SST -- reasons (not) to buy?
Replies: 167
Views: 7392

Re: Moulton SST -- reasons (not) to buy?

All other things being equal larger diameter wheels/tyres have less rolling resistance than small ones. So in MickF's mecanno experiment above the large wheels would be faster provided the slope was long enough to overcome the lower inertia advantage of the smaller wheels (and for the inertia advant...
by igauk
7 Mar 2019, 12:41am
Forum: Bikes & Bits – Technical section
Topic: Moulton SST -- reasons (not) to buy?
Replies: 167
Views: 7392

Re: Moulton SST -- reasons (not) to buy?

I don't have a great deal to add to the comments posted already but FWIW I've been riding a second hand (but very little used) TSR 30 for the past 12 months. This replaced a traditional Reynolds 653 tubed, 700cc wheeled, Aravis Audax. Moulton is Campag Centaur/Chorus 10 speed triple, Aravis was Shim...
by igauk
12 Oct 2018, 1:41am
Forum: Bikes & Bits – Technical section
Topic: Moulton TSR rear tyre wear.
Replies: 27
Views: 833

Re: Moulton TSR rear tyre wear.

Interesting discussion. I've got Panaracer Minits Light PT on my TSR, but they've only done about 600 miles. I'll update as and when they wear.
by igauk
11 Aug 2018, 12:35am
Forum: Bikes & Bits – Technical section
Topic: are small-wheeled tyres always a tight fit?
Replies: 23
Views: 604

Re: are small-wheeled tyres always a tight fit?

FWIW on my Alex DA16 20" (406) rims Schwalbe Pro 1's (installed tubed) were a complete nightmare irrespective of what method was used, including VAR levers and hands and straps. I think they'd be great on a tubeless compatible rim but the thought of trying to fit them out on the road means they...
by igauk
15 Jul 2018, 2:25am
Forum: Bikes & Bits – Technical section
Topic: Wahoo speed sensor mounting
Replies: 4
Views: 661

Re: Wahoo speed sensor mounting

On my Miche hub the Wahoo sensor just sits a bit off centre towards the non-drive side to to avoid the drive side bulge. Secure and works fine.
by igauk
6 Jul 2018, 1:43am
Forum: Bikes & Bits – Technical section
Topic: Moulton Front Derailleur Adjustment
Replies: 31
Views: 582

Re: Moulton Front Derailleur Adjustment

I got just about acceptable shifting with the FD as low as possible, literally a hair's breadth clearance on the outer chain ring, parallel alignment. Still not entirely happy with it but it'll do for now. I take it a TA outer chain ring can be reversed and fitted to the middle if I go down the 48 t...
by igauk
4 Jul 2018, 7:50pm
Forum: Bikes & Bits – Technical section
Topic: Moulton Front Derailleur Adjustment
Replies: 31
Views: 582

Re: Moulton Front Derailleur Adjustment

Thanks all, I'll tinker tonight and update. A 48 middle ring wouldn't be bad idea.
by igauk
4 Jul 2018, 5:22pm
Forum: Bikes & Bits – Technical section
Topic: Moulton Front Derailleur Adjustment
Replies: 31
Views: 582

Re: Moulton Front Derailleur Adjustment

Thanks Mick F. I've a spare 58 ring, so maybe going even bigger with a high set FD will do the trick! I noticed the SST version has a re-designed front mech mount, good of them to fix the problem - 10 years later! I like a fettle but this Moulton is straying dangerously close to complete PITA territ...