731.6 N

You must overcome the force of the object acting down the slope plus friction.

so F = 1178sin30 + 142.6 = 731.6N

or by energy, that used to lift it, plus losses from friction (1 second step)

w.d. = f * d
w.d. = 1178 * 4sin30 + 142.6 * 4
w.d. = 2926.4

4 metres of cable per second

f = w.d. / d
f = 2926.4 / 4 = 731.6N

plus 10% for other losses…

p.s. to hold steady on the hill with no movement would be 1178sin30 – 142.6

A friend lost one of his rear wheel nuts on the first run of a two week holiday in Morzine. None of the shops had a nut with the right thread so out came the zip ties 😀

They're lovely do it all bikes. Also shameless plug that its for sale.

If its really stuck then as a last resort smack the axle out from the drive side with a rubber mallet. Though this will probably result in needing a full rebuild, as it could damage the bearings from putting force on the internal bearing race and the hub bearings will pop out of the hub and off the axle. Probably the outer most bearing has rusted onto the axle. Its what the LBS will do if nothing else works.

2007 P7's had big problems with dropouts sliding forwards. Go into your dealer and ask if they will warranty it. If you haven't had to warranty it before then its likely that you had the thinner MK1 dropouts. The MK2 dropouts are thicker so you can torque them more, and the brake side has 3 bolts to help prevent sliding.

if they wont you can buy here [/url]

Also make sure that the two surfaces, frame and dropout are very clean and grease free before assembling then its shouldn't slip. If that fails then as you say make a spacer, I was using bits of zip tie jammed in the slot for a while which worked well and you can tension the chain as it stretches by adding more.

Uk
http://maps.google.com/maps/ms?msa=0&cd=2&sll=54.71036,-3.581221&sspn=3.96286,16.077075&hl=en&ie=UTF8&ll=54.046489,-2.285156&spn=10.825115,33.815918&z=6&msid=113197499923914357177.00046d462ce1bd8fc458a
then in more detail
England
http://maps.google.com/maps/ms?msa=0&msid=112950966862993097975.00044a23527b33fb83206&ct=docsearch&cd=3&cad=docsearch,cid:11442521990856419997

Scotland
http://maps.google.com/maps/ms?msa=0&msid=112950966862993097975.00044b2bed15b8f994e21&ct=docsearch&cd=4&cad=docsearch,cid:5968407950339748330

Wales
http://maps.google.com/maps/ms?msa=0&msid=112950966862993097975.000454bb3df80efb18652&ct=docsearch&cd=5&cad=docsearch,cid:9110229371343695246

Its short sandy dh tracks with berms, small drops, good sized doubles and a huge road gap.

Here's a couple of vids of my club trips, hope the camera man doesn't mind.

It should be on this map. just park at the side of the road if its not busy. Think that they are soon to be charging for riding but not quite started yet.

http://maps.google.co.uk/maps/ms?hl=en&ie=UTF8&t=p&msa=0&ll=51.028615,-0.861654&spn=0.022618,0.066047&z=15&msid=105068830946226376303.000483185cb6043190592

It should be getting an update from android 1.6 to 2.1 including htc sense very shortly (could be out already, non official ones certainly are). T-mobile are releasing the update on the 16th of april for their G2 touch. Should add some nice functionality such as sat nav and other things that I can't remember right now.

Oh and if you're out and about with it a car charger comes in handy as with most smart phones.

I'm 6', and 32" inside leg and have a 18.5 EX. Though I'm using a lay back seat post to help get the length right, So the 19.5 could have been better for me. Worth giving them a test if you can.

This could be complete rubbish, but iirc if your frame is symmetric in terms of distances, then i think that the center of the rear cog should be 12-13mm from the inside edge of the dropout/end of the axle if using the outside chainring.

I've had this problem a couple of times before, its normally that the outermost bearing has rusted/seized onto the axle.
If its not too bad then as sfb has said try to lever it off, or clamp the freebody carefully into a soft vice and give it a good tug.
If it is really stuck good and proper you will need to drift the axle out from the drive side to disk side with a soft hammer using something to support the wheel while providing space for the axle and one bearing to pop out, which if you have the hope tools its easy to get back in. You will see a rusty deposit on the axle that will just carefully scratch off with a penknife. HTH