Model Railway Forum

Go Back   Model Railway Forum > Specific Gauge Topics > OO Scale

OO Scale OO model railway topics


Reply
 
Thread Tools Display Modes
Old 08-05-2018, 02:24 PM   #21
Bunkerbarge
Senior Member
 

Join Date: May 2018
Location: Mid Lincolnshire in a field
Posts: 110
Bunkerbarge is on a distinguished road
Default

Quote:
Originally Posted by cadman View Post
@BB........Just checked my L1 which is still in new condition and find that the front pony truck is very loose and easily rattles from side to side, as yours is s/h is there any dirt preventing this looseness?......also regarding back to back measure, mine shows 14.26 for the pony truck wheels and 14.42 for the drivers.........have run mine at speed over Hornby points with no derailing......HB
I actually think it is this excessive looseness that works against it and precesely why the loco can actually travel with the front pony truck at an angle to the track. Most on line sources seem to suggest replacing the two pins in the slots with a single pivot point.

I'm going to get a back to back gauge as suggested above and see if taking a bit of the clearance out of it might help align it.

The problem is not just going through a point, it is going through a point after it has gone round a corner, which puts the truck out when it goes into the point. If I stop after a curve, go backwards to straighten up the truck and then go forwards again over the point it is fine, if not a bit unrealistic!!
Bunkerbarge is offline   Reply With Quote
Old 08-05-2018, 03:35 PM   #22
Walkingthedog
Part time idiot
 
Walkingthedog's Avatar
 

Join Date: Aug 2013
Location: HAZLEMERE, Bucks
Posts: 10,035
Walkingthedog is on a distinguished road
Default

I think the best thing to do if not converting to a single pivot is a spring bearing down on the pony truck. Locos entering point straight off a curve can be prone to derailments. I have always thought it best to lead in to points with a straight, of course this is not always feasible.
__________________
NURSE,the screens!
Walkingthedog is online now   Reply With Quote
Old 08-05-2018, 04:28 PM   #23
Bunkerbarge
Senior Member
 

Join Date: May 2018
Location: Mid Lincolnshire in a field
Posts: 110
Bunkerbarge is on a distinguished road
Default

Quote:
Originally Posted by Walkingthedog View Post
I think the best thing to do if not converting to a single pivot is a spring bearing down on the pony truck. Locos entering point straight off a curve can be prone to derailments. I have always thought it best to lead in to points with a straight, of course this is not always feasible.

Agreed, I'll let you know how it goes. I've just bought two back to back gauges as well!
Bunkerbarge is offline   Reply With Quote
Old 08-05-2018, 04:33 PM   #24
cadman
Senior Member
 
cadman's Avatar
 

Join Date: Mar 2016
Location: Leighton Buzzard
Posts: 430
cadman is on a distinguished road
Default

I don't use a fixed B to B gauge, I prefer the Vernier Caliper, It's more versatile........HB

ps.......Bb, just a thought, are you running the L1 with a coupling hook in the front socket?.....if so, that could have a bearing on the instability on the pony truck......HB
cadman is offline   Reply With Quote
Old 08-05-2018, 05:27 PM   #25
Walkingthedog
Part time idiot
 
Walkingthedog's Avatar
 

Join Date: Aug 2013
Location: HAZLEMERE, Bucks
Posts: 10,035
Walkingthedog is on a distinguished road
Default

I have Vernier calipers as well but you can push the wheels onto a fixed gauge to set them. No measuring required.
__________________
NURSE,the screens!
Walkingthedog is online now   Reply With Quote
Old 08-05-2018, 08:12 PM   #26
Bunkerbarge
Senior Member
 

Join Date: May 2018
Location: Mid Lincolnshire in a field
Posts: 110
Bunkerbarge is on a distinguished road
Default

Quote:
Originally Posted by cadman View Post
I don't use a fixed B to B gauge, I prefer the Vernier Caliper, It's more versatile........HB

ps.......Bb, just a thought, are you running the L1 with a coupling hook in the front socket?.....if so, that could have a bearing on the instability on the pony truck......HB
No I have not fitted a coupling to the front as I prefer the detail to be fitted.
Bunkerbarge is offline   Reply With Quote
Old 08-05-2018, 08:26 PM   #27
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 3,887
Steve M is on a distinguished road
Default

Quote:
Originally Posted by Bunkerbarge View Post
No I have not fitted a coupling to the front as I prefer the detail to be fitted.
Could the bogie be snagged by any detail below the buffer beam?
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is online now   Reply With Quote
Old 08-05-2018, 10:59 PM   #28
Bunkerbarge
Senior Member
 

Join Date: May 2018
Location: Mid Lincolnshire in a field
Posts: 110
Bunkerbarge is on a distinguished road
Default

Quote:
Originally Posted by Steve M View Post
Could the bogie be snagged by any detail below the buffer beam?
Actually you are quite right. It was resting against the bottom edge of the three loop coupling, which was rigid and actually restricting free movement of the pony truck. I did notice this though and cleared the loop away so not nothing touches it.

Thanks for the thought though.
Bunkerbarge is offline   Reply With Quote
Reply

Bookmarks



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 12:01 PM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.