Search found 18 matches

by halfpenny
27 Sep 2020, 6:26pm
Forum: Bikes & Bits – Technical section
Topic: GT 85 What is it good for?
Replies: 31
Views: 1743

Re: GT 85 What is it good for?

Not everyone on this forum is an engineer or scientist, or indeed bothered. 'Waxy' is in my opinion a good description for a layman of the residue when the solvent has flashed off - anyone can try this for themselves and decide if the coating is 'oily' or 'waxy' . I'm sure you would not advocate WD40 as a bike oil.
by halfpenny
27 Sep 2020, 4:07pm
Forum: Bikes & Bits – Technical section
Topic: GT 85 What is it good for?
Replies: 31
Views: 1743

Re: GT 85 What is it good for?

I didn't say that WD40 was a wax, and still contend that a waxy finish is what is left after the solvent has flashed off, not an oily one. Petroleum products can have many states. But I think we are agreed that it is not a good lubricant, as such. I use it occasionally because the best feature is the spray aspect, which works at any orientation. For penetration, use diesel or a special product like Plus Gas
by halfpenny
27 Sep 2020, 10:42am
Forum: Bikes & Bits – Technical section
Topic: GT 85 What is it good for?
Replies: 31
Views: 1743

Re: GT 85 What is it good for?

WD40 is absolutely not a penetrating oil. It is a waxy water dispersant, and not a very good lubricant at that. One of the most common misconceptions.
by halfpenny
26 Sep 2020, 7:35pm
Forum: Does anyone know … ?
Topic: Navy ships off Plymouth
Replies: 80
Views: 3656

Re: Navy ships off Plymouth

Gas turbines seldom are fuelled by gas - think avgas (paraffin) for planes, diesel for gensets
by halfpenny
24 Sep 2020, 4:15pm
Forum: Does anyone know … ?
Topic: List of British name manufacturers bicycles
Replies: 23
Views: 1517

Re: List of British name manufacturers bicycles

How about one letter a week, to keep the topic active. Don't know any As myself.
by halfpenny
15 Sep 2020, 10:18pm
Forum: Does anyone know … ?
Topic: Hills near Coventry
Replies: 13
Views: 1273

Re: Hills near Coventry

Go out through Baginton to Bubbenhall, or out through Finham and Stoneleigh to Kenilworth golf club, or (further) to Burton Dassett, Avon Dassett and Edge Hill
by halfpenny
3 Sep 2020, 7:29pm
Forum: Bikes & Bits – Technical section
Topic: Will I be wasting money?
Replies: 60
Views: 4090

Re: Will I be wasting money?

And the gearing??[/quote]

Not very different, but I'm talking about comfort, cycling along in an appropriate gear at my usual cadence on familiar roads. Just my impression - not looking for a reason, and in fact it doesn't matter. OP might try a modern bike for comparison -I'd certainly recommend it.
by halfpenny
3 Sep 2020, 4:04pm
Forum: Bikes & Bits – Technical section
Topic: Will I be wasting money?
Replies: 60
Views: 4090

Re: Will I be wasting money?

I would bet money on three things;

1) that you have much nicer tyres on the Boardman and
2) that the Viscount could do with some additional fettling
3) that the riding position, gearing etc between the two machines isn't

You would lose your money! Tyres are virtually identical; Viscount is in A1 order; and I made sure that the saddle hieght and reach are identical. My point is that the unseen technology improvements are significant.
by halfpenny
2 Sep 2020, 8:41pm
Forum: Bikes & Bits – Technical section
Topic: Will I be wasting money?
Replies: 60
Views: 4090

Re: Will I be wasting money?

I happily rode my steel framed Viscount for 35 years - then bought a secondhand full carbon Boardman, and was taken aback, but perhaps not surprised, by the noticeable speed improvement. More importantly, now at 66, I took the Viscount out last week for the first time in four years, and was amazed at how comparatively comfortable and smooth is the Boardman. I could hardly believe what hard work was the Viscount. So there have been improvements over the years.
by halfpenny
27 Aug 2020, 12:44pm
Forum: Bikes & Bits – Technical section
Topic: Can I cut this bit off my rack?
Replies: 22
Views: 1682

Re: Can I cut this bit off my rack?

Do the job properly - just trim off 3mm and add a spot of paint.
by halfpenny
26 Aug 2020, 7:32pm
Forum: Bikes & Bits – Technical section
Topic: Can I cut this bit off my rack?
Replies: 22
Views: 1682

Re: Can I cut this bit off my rack?

The protrusion has no strength implications. You can cut off the end at an angle, and still leave enough to hook a strap.
by halfpenny
26 Aug 2020, 2:50pm
Forum: Does anyone know … ?
Topic: Viscount bicycles!!
Replies: 2801
Views: 492076

Re: Viscount bicycles!!

20200826_112836.jpg


My newly repainted/stickered aerospace sport, bought new by me in 1978 or 1979 with steel forks. Updated 25 years ago with 700c wheels from Ribble, 6 speed rear hub and new brake levers. Otherwise original Shimano 600 front and rear mech; Shimano centrepulls; SR stem, seat post and cranks; and my B17 saddle.
by halfpenny
13 Aug 2020, 4:49pm
Forum: The Tea Shop
Topic: New house - what green solution would you do?
Replies: 34
Views: 1450

Re: New house - what green solution would you do?

Grey and rain water use is a popular armchair suggestion. Having tried, I would say it is very impractical for in-house use, because of the difficulties of adequately filtering organic matter, and dealing with residues from household chemicals. Rainwater for toilet cisterns reduced our water consumption by 70+%, but was too problematic from the smell and biological soup aspects - we abandoned after 5 years.
by halfpenny
13 Aug 2020, 4:11pm
Forum: The Tea Shop
Topic: Air Source Heat Pumps
Replies: 61
Views: 6606

Re: Air Source Heat Pumps

We have 10 years with a Mitsubishi air source heat pump in a well insulated new build. Noise is low, and only when fan is running -can't hear it indoors. Electricity costs are fine with low temp. underfloor heating, and maintenance cost is zero, much lower overall than gas or oil. Wouldn't switch back
by halfpenny
13 Aug 2020, 1:08pm
Forum: The Tea Shop
Topic: New house - what green solution would you do?
Replies: 34
Views: 1450

Re: New house - what green solution would you do?

You have to distinguish between grey water and rain water. Even the latter has problems in the house, as I know from pratical experience, though we do collect for garden use. What do you define as 'grey'?. Sink waste?, dishwasher waste?, washing machine waste? Would you use this on the garden?