The new Peco Bullhead track system is a little bit different than the preceding Code 100 and Code 75 systems. Consequently, working with it will be a bit different.
This post looks at some of the differences on the workbench. No doubt more differences will arise in real layout construction but unfortunately I'm not at that stage yet.
First, here's a quick photo of Bullhead Large points (front) vs. Code 75 Medium (rear) for comparison:
You can see the finer detail, the increased timber spacing, the continuous blades, the less obtrusive over-centre spring, etc.
Bullhead track joiners (front) are smaller and again finer in detail than the old Code75 joiners (rear).
Code75/100 points have voids inside the outermost chairs, to allow the joiners to slide fully onto the rails, and it was traditional to cut away the chairs on the first sleeper of flexitrack to accommodate the joiners. This is no longer necessary with the smaller Bullhead joiners.
(Code 75 Medium points)
Fitting joiners is fiddly but just about do-able without magnification (for a middle-aged, glasses wearer like me).
(As with the larger joiners, the trick seems to be to offer the joiner up at an angle so that the bottom of the rail engages first, then wiggle and push.)
Joining track to points is more difficult because you have to line up two tiny joiners at the same time but I found that by sliding the ends together on a flat surface the joiners engaged surprisingly easily.
(A bit of wiggling to ease the rails into the joiners and then recentre the joiners around the joints. Notice that the joiners don't interfere with the chairs on either side.)
After joining flexi-track to points I found there's a definite step in the track surface at the joint, which you can feel by running your finger over it and by rolling a wagon over it.
(Sorry for the bad photo - that was the best my phone could do!)
Measuring with a micrometer I found that the flexitrack rails were 1.95mm high whereas the rails on the bullhead points were 1.90mm high. 1/20th of a mm difference - probably not really a problem, but interesting.
Sleepers on Bullhead flexi-track are more prone to become out of line than Code75/Code100 - it can easily look like rickety wild-west railroad! This is because bullhead flexi-track webbing only joins each sleeper to the next one on alternate sides of the track whereas Code 75 and Code 100 join sleepers in staggered groups of 4.
This will probably mean a lot of adjusting will be needed before fixing track down on a layout...
Edited by Harlequin, 17 June 2018 - 08:41 .