35028, "Clan Line"

Thanks guys! Nothing like drawing the attention of my daughters to it. (wink)

Do they have Internet in "Homes"?

Anyway, Clan Line. Only one more booked trip before summer maintenance. Just hope they go into that maintenance period having sorted the problem. Good luck guys.

 

Regarding the item where a MN slipped at 85mph in wet conditions - surely this would imply an implausibly high torque being applied, which at that speed would mean a power output of well over 5000hp?! I have never heard of a significant slip at anything like that speed, as the tractive effort output drops off so dramatically at higher speeds. Happy to be put in my place here!

 

On the Top Gear Tornado episode they had wheelslip at around 70 mph at one point. Clarkson seemed shocked that it was possible to "wheelspin" a loco at that speed!

 

Never seen the 60532 incident then?

 

60532 was only travelling slowly when it slipped. Still disasterous though. I recall comment that whilst it was slipping it was at the equivalent of some 120 mph. Anyone remember ?

 

Interesting post. Do you have the calc as an XL file - I'd like a copy if you're OK with that? How do you arrive at the coeffiecent of friction? Thanks, Iain

 

140 mph I heard. There's a video on youtube from somebody near the rear of the train if anyone can find it

 

http://www.youtube.com/watch?v=YjsNbzg1UaI

 

I'm not sure this is relevant to the original point? This was not a slip which started at high speed - quite the opposite in fact?

 

The TE required to keep a train on the move at 85mph isn't different from that required at 10 mph, all other things being equal. The critical thing in whether the wheels will slip or not is the coefficient of friction and that can vary from about 0.3 on a polished rail to virtually nothing under 'leaves on the line' conditions.

 

Hi doe's anyone know how the lads are getting on with brining this great loco back to mainline running please;
wishing you all the best and look forward to seeing her real soon;

jane

 

Please Mr. Moderator-if others want to start a new thread on polished rails and leaves on the line,it's OK by me...and Im sure by others as well.
The main title here is:35028 "CLAN LINE" all I want to know is,how is the old dear getting on.

If I needed a history lesson on the railway,I'll pop into the library.

 

But all other things are not equal; air resistance increases with speed (as do other resistances but to a lesser degree) and at 85 mph is a significant component of the total resistance. If the train is travelling at constant speed on level track, the actual tractive effort (not the nominal tractive effort) is equal to the total resistance.

 

I agree any news on her yet?

Regards

Mike M. (70c)

 

Does anyone know anything about Clan Line moving to Crewe on the 21st of November 2010 or something of that sort?
Apollogies if I'm out of touch with the engines goings on

 

It is at Crewe already. It may do a test run in the area before heading south for home.

Paul

 

LNWR dont do "on a wing and a prayer"...... Britannia was on a "TEST" run, to iron out minor problems like the one that was found.

As far as i know Clan Line is due a Nortbound test run from Crewe Next Monday.......but as usual that could change.

 

What exactly is your basis for that salacious comment - presumably you have inside access the LNWR and can substantiate it? Because to the rest of us it looks like the sort of failure that test runs are designed to highlight before any loco r-enters service. A gland packing is unlikely to fail just sat on shed is it? Iain