just to give an end to this,it was indeed the expansion of the technyl material.i took the layshaft gear out and using a friends milling machine and dividing head I shaved the gear down using a flycutter,a bit slow but it appears to have done the trick,so far it been working fine.i did have to shave...

the problem is definetley caused by by the technyl distorting over the years.only this can account for the expanded o. d. i have found on both gears.i have reduced both and this has helped will probably need to make new ones though

many thanks for the diagrams.i think i am going to make one

this bvs 100/105 for the lay gear where is it.i have trawled through the sites but cant find it

i agree with what you say as i have got my old gear cutting books out and using the formulae provided the drawing sizes appear to be correct.i can only suspect that the plastic [delrin] has distorted over time to create a more elongated gear tooth or some previos owner made there own gear causing th...

[ have removed the gear and have shaved some about 10 thou of the od and taken asmall amount of each side asi found it was alittle tight in the selector locator.i then put the put lay shaft back in to find that this has definetley free the gear changing mechanism somewhat.i dont know wether to remov...

hi i am the one with tight gears.i have stripped headstock.the plastic gear i have has an outside dia of 5.699 as oppossed to what u quoted 5.563 so my od is 100 thou bigger can u check ur drawing again or is my lathe completley differerent.my serial number is 30857/syn/m.i was hoping to just shave ...

my machine has nov 82 on manufacturing tag.i used to be a machine tool fitter in my youth.i have had the machine about 5years.have been aware of it being a meshing prpoblem fro early.origanilly i put a 1 hp single phase motor but found it was causing the capacitor to burn out when in heaven use.i ev...

is it possible to get a new gear and how do i know that new gear will have suffiecnt clearance.you are right the old gear has some damage where effort has been made to engage it but it is obviously heat during running which is causing the the binding.i cant move the centre distance of gear.i have fr...

thank you for these posts this is just as i suspected wheni remove this gear of its spigot mountings it appears to tirn over more freely.thank you again as i do have problems engaging the low ranne.i have passsed silver paper between said gears and it destrys it.i need to take gear out and shave it ...

Hi folks. I have this lathe and it works very well except for it gets hot when used at high speed. I had cause to use it at high speed for extended time the other day and noticed the following problems. First symptom is the high/low gear lever becomes difficult to move, then as it gets hotter I fin...

i would be interested in a 30 tooth gear if anyone has a spare one to sell