Search found 180 matches

by dbrunner
26 Sep 2013, 12:45pm
Forum: Bikes & Bits – Technical section
Topic: Grease coming out only on one side?
Replies: 124
Views: 7112

Re: Grease coming out only on one side?

I think the best test now will be to run the bearings with loose balls and observe the result.

Mind you, may require a truss....

Dave
by dbrunner
25 Sep 2013, 5:45pm
Forum: Bikes & Bits – Technical section
Topic: Grease coming out only on one side?
Replies: 124
Views: 7112

Re: Grease coming out only on one side?

Mick, The problem of grease purge or grease migration is the subject of many studies, here is an example where grease is demonstrated to purge (exit) from one side only of a bearing through rotation. http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0CEAQFj...
by dbrunner
16 Sep 2012, 5:41pm
Forum: Bikes & Bits – Technical section
Topic: Creaking BB - Brand Spanking New
Replies: 12
Views: 1354

Re: Creaking BB - Brand Spanking New

The solution to this may be to put 2 or 3 turns of PTFE (plumbers tape) around the unthreaded end of the cartridge. I have always done that when working on BB's - never had one creak yet. Wrap in a clockwise direction as you look at the end. I also apply Alumslip (anti-corrode, anti-seize, anti-gall...
by dbrunner
20 Nov 2010, 4:06pm
Forum: On the road
Topic: Stupid 4x4 drivers
Replies: 420
Views: 15306

Use of Bull Bars - nothing more than fashion accessories.

From a 4x4 off-roading web site http://www.kent4x4offroading.co.uk/safety_of_bull_bars_4x4_suv.htm Quote: RosPA also has strong feelings on the safety aspects of bull bars fitted to SUV's. The European Safety Council has estimated that 2,000 people (pedestrians) die, and 18,000 serious injuries are ...
by dbrunner
16 Nov 2010, 3:26pm
Forum: On the road
Topic: Stupid 4x4 drivers
Replies: 420
Views: 15306

Re: Stupid 4x4 drivers

This directly from a 'Street Racing' SUV site.... G-POWER is proud to announce the debut of the most powerful BMW SUV – G-POWER TYPHOON Based on BMW X5. The new vehicle comes with an eight-cylinder supercharged V8 Engine that can generate 525 hp / 386 KW at 6,100 rpm and boosts peak torque to 600 Nm...
by dbrunner
16 Nov 2010, 2:37pm
Forum: On the road
Topic: Stupid 4x4 drivers
Replies: 420
Views: 15306

Re: Stupid 4x4 drivers

Kinetic Energy is given by: KE=1/2 x Mass x V^2 in other words double the mass and you double the Energy, which is pretty obvious. What is less obvious is that the deceleration of the smaller vehicle is given by: A(small) = A(big) * Mass(Big) / Mass(Small) where A=Acceleration, M=Mass More stats at ...
by dbrunner
16 Nov 2010, 8:47am
Forum: On the road
Topic: Stupid 4x4 drivers
Replies: 420
Views: 15306

Re: Stupid 4x4 drivers

The fact that you are less likely to be injured in a 4x4 is borne out by the results in my earlier post that your survival rates go up... while the other vehicle's goes down...

db
by dbrunner
16 Nov 2010, 8:16am
Forum: On the road
Topic: Stupid 4x4 drivers
Replies: 420
Views: 15306

Re: Stupid 4x4 drivers

Here is an interesting study from the Australian Parliamentary Research Notes: http://www.aph.gov.au/library/pubs/rn/2003-04/04rn27.htm I would just like to highlight these paragraphs: In general, 4WDs reduce injury risk for their occupants but raise the risk facing everyone else, according to a Mon...
by dbrunner
15 Nov 2010, 5:14pm
Forum: On the road
Topic: Stupid 4x4 drivers
Replies: 420
Views: 15306

Re: Stupid 4x4 drivers

Some interesting findings here...

http://www.safermotoring.co.uk/AreSUVsSafe.html

Dave
by dbrunner
15 Oct 2010, 4:53pm
Forum: On the road
Topic: Smelly cyclists ejected from pub
Replies: 46
Views: 5030

Re: Smelly cyclists ejected from pub

Have to say that I have lived in Nomansland for 20 years and The Lamb is my local and is very cyclist friendly. On this occasion it appears that the 'cyclists' in question were from a Southampton running club. They are not regular cyclists and I can well imagine that kit (especially waterproof/top l...
by dbrunner
31 Aug 2009, 7:23am
Forum: Bikes & Bits – Technical section
Topic: Caliper brakes on kids bike - Centring problems
Replies: 5
Views: 1390

Re: Caliper brakes on kids bike - Centring problems

Err... how about another spanner on the two front nuts... always works for me.

Dave
by dbrunner
8 Jul 2009, 7:16am
Forum: Bikes & Bits – Technical section
Topic: Fixing a damaged derilleur
Replies: 11
Views: 507

Re: Fixing a damaged derilleur

I have a collection of rear mech hangers, if you post a picture I'll see if I have one.

Dave
by dbrunner
1 Jul 2009, 5:54pm
Forum: Bikes & Bits – Technical section
Topic: removing / moving grips
Replies: 9
Views: 491

Re: removing / moving grips

I use an old spoke to slide under the grip, thinner than screwdriver and long enough to get to the end.

+1 for any spray lubricant to remove, use washing up liquid to lubricate the replacement

Dave
by dbrunner
1 Jul 2009, 5:51pm
Forum: Bikes & Bits – Technical section
Topic: Why do my mudguard bridges break?
Replies: 8
Views: 1185

Re: Why do my mudguard bridges break?

Wild assed guess is that you need a couple of flat washers either side to spread the load onto the metal at the bottom of the hole. Looks like the load is being transferred through the thin sides of the bridge and they will soon fail from metal fatigue. Never broken one of these in 40 years (OK, I o...
by dbrunner
19 Jun 2009, 1:48pm
Forum: Using the Forum - request help : report difficulties
Topic: How to post a photo on here.
Replies: 21
Views: 2069

Re: How to post a photo on here.

Braz, the picture frame is not the problem. You are constrained by the 256kb limit, I like the fact that pictures of different sizes all get re-scaled on screen, but you can see them 'full size' by clicking on the image. In my opinion, this system is way easier than the old one. Just learn to re-siz...