well,an update on my Reads sewing machine,i got it and did a bit of googling to find its not the 'sail maker' as advertised,i knew it only had a 50w motor too,but intended to make a hand crank for it,well i did a few experimental runs with bits of off cuts of sails,it performed well even up to 8 layers dacron/mono mix,but did have to help it now and then,it was fine as long as you had some speed comming into thicker stuff (max 9 layers). and then the inevitable............... the motor gave up working.
an ebay search and ?42 later, i recieve my new motor 150w! rated same rpm (nearly same,think mine was 5-6000rpm).
WOW! its got some punch now! yesterday it did 17 layers mixed dacron/mono/webbing, 17 layers! mighty impressed with it

i bought 10 needles of size 16 (100) and ten in size 18 (110), the 18's work well in real heavy stuff but do have to be carefull not to push/pull sail through the machine as ive broken a few! lol, its hard to control the sail being so large and not so manoverable without pulling/pushing,all part of the learning curve i suppose. the thread im using is v69 bonded,i tried lots of other real strong threads but nothing else would work,i think its the mono film slices the thread on the sharp edges when it goes through. 1st sail nearly done,pics to come....... chassis later this week/next week when my steel arrives