Tony Wilkins wrote:Stick around long enough and see the wheel reinvented.
Ah ... but to what profile I wonder
Mont wrote:Hi Tony,
I am contemplating using white metal chairs on my layout, which glue would you currently recommend?
Tony Wilkins wrote:... and provided you can maintain your top and line you should be OK.
Philip Hall wrote:I am going to have a go at soldered sleepers every inch or so on pointwork, but Tony's warnings of possible expansion problems have worried me a bit.
JFS wrote:Hello Colin,
All looking good - well done.
Just one tip - you need to set the lengths of the rodding so that at each end of the travel, the bellcrank arms are at an equal angle to the rods. Otherwise, there is a lot of lost motion. An easy way to achieve this is to cut the rod somewhere along its length and re-join it with a length of brass tube which is a sliding fit. That way, you can tack it, test it, and tweak it before soldering it all up.
Another small point is that where you have to drive 2 rods from one crank, as here, you can use two clevisisisis / clevi?? off a common pin on the bellcrank, bearing in mind that if you load a soldered joint in bending it can fatigue after a while.
Hope that helps,
Edit:- sorry - meant to add - excellent filing of the FB switches BTW.
Le Corbusier wrote:This reminds me of one of the BBC masterclasses I saw 30 years ago ..... I think it was Julian Bream the classical guitarist. He took a class in front of an audience and his 'pupils' were all concert standard soloists in there own right ... it was riveting watching if I remember rightly.
All of this is a bit above my level, but is avid reading.
Allan Goodwillie wrote:Julian Bream used to come to our art college (Dundee) every year and give a performance for the students, I think he was a friend of Alberto Morocco who was our head of painting. He was a very heavy breather when playing, which was maybe more pronounced for those of us sitting in the front row, but what a wonderful guitarist!
The resulting party afterwards was equally memorable for those who did not get too drunk. Julian could really go off piste and had a huge repertoire playing all sorts of styles that he was not known for, except by his friends.
Colin I am enjoying where this is going - are Howard's bits and pieces readily available, they certainly look strong enough to do the job . I have already bought servos for my new layout, but have another plan for a follow up layout that might be fun to do in this way, just for the experience.
Colin Parks wrote:
That analogy to the televised Julian Bream masterclass is amusing. I definitely feel like a pupil in this case, but having first to build the 'guitar' before receiving lessons in playing it!
Under Howard's tutelage, I have got at least this far with the project. It has to be said that Howard has very kindly offered much advice and encouragement via private messages, so you are spared reading some of the dumber questions that I sometimes ask!
Despite the adjustments that are needed, it is quite fun to see all the parts move (in the right direction) when the crank is moved.
All the best,
Colin Parks wrote:
Thanks for your comments on this humble attempt at the rodding. Your observation about setting the crank arm angle has got me slightly bemused. Is the crank in the picture to be at 90 degrees to the rods when the rods are mid-travel?