not crazyman hes crazy! here is one of mine with a nc30 in it 125 size bike
http://images.trademe.co.nz/photoser...27862_full.jpg
I'm pretty sure the Westoby's in timaru had a waddon/EMC/rotax similar to that one.
They built a yamaha 100 powered bucket with a copy frame too - a friend of mine bought it a few years back but had to wait to pick it up until they'd made a new seat/tank unit as they'd simply switched the 125 unit between bikes.
They had access to a mould for that unit.
I do spine frames for the aermacchi replicas - not surprised that what was felt as front end chatter came from the rear...they are "different " to set up.
I do spine frames for the aermacchi replicas - not surprised that what was felt as front end chatter came from the rear...they are "different " to set up.[/QUOTE]
It took me and the builder ages to figure that out but it was a nice bike to ride after
Go soothingly on the grease mud, as there lurks the skid demon
what kind of things did you do to remove the chatter from what was thought to be the front end to the rear?
The Macchis - both original and replica frames are noted for front end patter if the rear spring rate is too high or the compression damping is too stiff. It's aggravated by the motors rotating "backwards"...to get them to put the (limited) power down we run a lot of swingarm droop.
It's not frame flex - OE frames spines are 65mm OD X 6 mm wall ---yes, six millimeters.... My replicas are 3 inch OD 2 mm wall.
Either are plenty stiff enough.
frame weight is not bad either...one of mine was weighed at a Post Classic meet at Manfield a few years back - 215 lb with a gallon or so of fuel on board....not bad for a 350 pushrod single.
I can't post pics here - my internet is very basic. a number of the ChCh bucket guys know who i am. Could be interested in frames, maybe.
Materials - i use seamless MS same as Ray breingan and others in NZ - reynolds tube aint easy to get - or cheap.
[QUOTE=Ocean1;1130221521]I'm all ears, dude. If there's a chance to build 3 or 4 you'd jig up for it, the cost to build wouldn't be too bad at all.
I have sent off a couple of e mails and if I hear anything will let you know. One was to Keith and I gave him the forum details so watch this space
thanks guys pays to have a open mind on these matters. this case it chatters when you back of around fast corners. l know this it a diffient type of frame but worth a look
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