my proposed front mount

Originally Posted by Tcams_Zonie

Ok so im going to use to steel plate/U-bolt mounting technique(thanks venice and bill) because the front tube on my bike is to big. Question: The two rods that come out of the motor, do they need to be cut to the right length so that they can bolt to the steel plate or do they come out some how. Sorry this might be a dumb Q but Im learnin here.

Originally Posted by impression

yes, i had thought of using bolts instead of welds but at the moment i hate bolts as i've had upwards of 20 shear on me....

my bike's downtube is aluminum so drilling through is out
it's also 50mm diameter which means if i go the plate + U bolt/clamp the heads of the stock bolts into the holed will be on the downtube and i feel will cause slipping or torquing on the bolts causing more shearings :/

i was thinking something like this, but the original mounting bolts as seen in this pic will still protude onto my downtube :/

http://motorbicycling.com/attachment...d-img_1040.jpg

this is the bike it's going on, the rear bolts sheared because the front mount wasn't gripping enough and as it vibrated there was extra torque on the rear bolts which inherantly snapped like glass.