Search found 739 matches

by UpWrong
4 Jan 2020, 1:06pm
Forum: Non-standard, Human Powered Vehicles
Topic: Rear suspension forces analysis
Replies: 10
Views: 252

Re: Rear suspension forces analysis

Thanks Brucey. That's a concise description of suspension squat and rise with a single pivot point (force number 1 in my list). Sounds like tyre to ground reaction force will have no effect of suspension compression or extension in itself. I'm still trying to work out if the deflection force on the ...
by UpWrong
4 Jan 2020, 12:14pm
Forum: Non-standard, Human Powered Vehicles
Topic: Rear suspension forces analysis
Replies: 10
Views: 252

Re: Rear suspension forces analysis

There will be negligible tension between the hub and the idler (unless your idler is on the power side?) The primary chain tension is forward from the sprockets, which is designed to create a torque in the rear wheel. It will also pull the whole wheel forward, but that is resisted by the compressio...
by UpWrong
4 Jan 2020, 11:06am
Forum: Non-standard, Human Powered Vehicles
Topic: Rear suspension forces analysis
Replies: 10
Views: 252

Rear suspension forces analysis

I posted this on a rather old Bentrideronline thread, but would be interested in any comments here. Assuming single pivot design and a single idler, I think these are the 3 main forces at work: ⋅ chain pulling the rear hub towards the idler ⋅ reaction force of tyre on the road &s...
by UpWrong
29 Dec 2019, 4:06pm
Forum: Non-standard, Human Powered Vehicles
Topic: 1x11 gearing on a bent
Replies: 50
Views: 16843

Re: 1x11 gearing on a bent

I have made up a 13-40T 10 speed cassette with XT RD mounted on a Wolf tooth goat link and XT shifter. Cabling and gear adjustment was very easy.
IMG_20191229_123539.jpg
IMG_20191229_150408.jpg
IMG_20191229_150717.jpg
by UpWrong
27 Dec 2019, 12:04pm
Forum: Non-standard, Human Powered Vehicles
Topic: In for a penny - trike vs velomobile
Replies: 30
Views: 1469

Re: In for a penny - trike vs velomobile

The Quattrovelo uses a double freewheel design rather than a differential.
by UpWrong
8 Dec 2019, 10:47am
Forum: Non-standard, Human Powered Vehicles
Topic: In for a penny - trike vs velomobile
Replies: 30
Views: 1469

Re: In for a penny - trike vs velomobile

I've been considering a trike with full suspension, and I love the weather protection of a full fairing so likewise the thought is, why not go the whole hog and buy a velomobile. It could possibly sit on the driveway or in the front garden with a ground anchor to secure it. OTOH there's the cost and...
by UpWrong
3 Nov 2019, 11:16am
Forum: Bikes & Bits – Technical section
Topic: Recumbent trike, 20” tyre suggestions please
Replies: 6
Views: 298

Re: Recumbent trike, 20” tyre suggestions please

If you want good punct*re protection and a good width at a reasonable price then 40mm Marathon greenguard is hard to beat. Perhaps, but if the design of the 20" (406?) tyre is like the 622 then the best compromise for on-road use is probably the 37mm See:- https://www.bicyclerollingresistance....
by UpWrong
3 Nov 2019, 8:13am
Forum: Bikes & Bits – Technical section
Topic: Recumbent trike, 20” tyre suggestions please
Replies: 6
Views: 298

Re: Recumbent trike, 20” tyre suggestions please

If you want good punct*re protection and a good width at a reasonable price then 40mm Marathon greenguard is hard to beat.
by UpWrong
2 Nov 2019, 1:23pm
Forum: The Tea Shop
Topic: ** The Brexit Thread ** - 'Brexit Means Brexit'
Replies: 21542
Views: 530967

Re: ** The Brexit Thread ** - 'Brexit Means Brexit'

....... The EU is an inward looking protectionist club with a political price for membership. Protectionist I'll agree without question it's the whole idea of a 'club' Inward looking and with political price for membership needs explaining. Inward looking and protectionist are tautological. Politic...
by UpWrong
2 Nov 2019, 7:40am
Forum: The Tea Shop
Topic: ** The Brexit Thread ** - 'Brexit Means Brexit'
Replies: 21542
Views: 530967

Re: ** The Brexit Thread ** - 'Brexit Means Brexit'

I just love the way so many Remainers characterise Leavers. In reality that and the ludicrous assertions of Jo Swinson says shedloads about them. Al The Remainers didn't, it was the LSE. It also won't characterise individual Leavers. And it doesn't make you a "settler", necessarily. What ...
by UpWrong
15 Oct 2019, 7:36pm
Forum: Non-standard, Human Powered Vehicles
Topic: Tyres for trike
Replies: 16
Views: 788

Re: Tyres for trike

I prefer Marathon GG to M+ because they are a lot easier to fit and remove,

Maxxis DTH is a high spec tyre which I find to be light and comfortable. I found a bit difference in feel between the 38mm and 49mm versions. The narrower felt much quicker with less lateral scrub.
by UpWrong
30 Sep 2019, 8:47pm
Forum: Non-standard, Human Powered Vehicles
Topic: Anyone selling a 2-wheel recumbent?
Replies: 19
Views: 1038

Re: Anyone selling a 2-wheel recumbent?

If you are 6'1" then a Metabikes should be straight forward to ride. There's a very wide range of adjustment on the seat. But it's a very rigid frame with no suspension but will take wider tyres. It's one of the top climbers. I had the 20/26 version,
by UpWrong
26 Sep 2019, 10:18pm
Forum: Non-standard, Human Powered Vehicles
Topic: Pictures of your recumbent
Replies: 520
Views: 232689

Re: Pictures of your recumbent

Gotta love a LWB! Why did you change to the 20" front wheel? When you said they no longer make them I had to take a look at the Rans site to see what they do still make and I see two Stratus models still listed, the XP and the LE. Are they set for the chop? Having the 20" wheel reduces tr...