speedster239
New Member
Hey guys,
I finished installing my new F80 kit from thatsdax.com on my Trek3700 the other day. It turns out that the down tube and seat tube were both too large for the motor mounts to fit onto.
With the down tube, the bolts wouldn't even extend past the tube itself, so using the three hole adapter the normal way wasn't even an option... I simply placed a nut on the exposed bolts coming from the block, then the three hole adapter, and then nuts to hold the adapter in place right near the end of the bolt. Luckily, I didn't need to drill as there was a hole available for the water bottle holder screw. I unscrewed this screw, lined up this screw with the hole in the frame and the hole in the center of the adapter and tightened! Talk about a perfect fit! After this, I went ahead and mounted on the seat tube.
The mount for the seat tube also didn't fit and the two bolts barely barely squeezed past the frame. Luckily I was able to squish them past the tube and I let the end of the block itself just rest on the tube. I placed both the clamp for this application, and the unused clamp for the down tube onto the two bolts, in addition to 7 washers on each bolt for space (as the threading on the bolt ended before the nut would even reach the clamps) and I tightened...
Snug fit!
Downside is that the carburetor barely squeezed in, even without the air filter on. So, instead of using the air filter assembly, I just placed the piece of cloth in front of the intake. I have no other option, the carburetor is literally right up against the tube. I'm in California, so it doesn't rain much here and this won't be too much of an issue, however I'm wondering how I can at least protect the topside from water.
I finished installing my new F80 kit from thatsdax.com on my Trek3700 the other day. It turns out that the down tube and seat tube were both too large for the motor mounts to fit onto.
With the down tube, the bolts wouldn't even extend past the tube itself, so using the three hole adapter the normal way wasn't even an option... I simply placed a nut on the exposed bolts coming from the block, then the three hole adapter, and then nuts to hold the adapter in place right near the end of the bolt. Luckily, I didn't need to drill as there was a hole available for the water bottle holder screw. I unscrewed this screw, lined up this screw with the hole in the frame and the hole in the center of the adapter and tightened! Talk about a perfect fit! After this, I went ahead and mounted on the seat tube.
The mount for the seat tube also didn't fit and the two bolts barely barely squeezed past the frame. Luckily I was able to squish them past the tube and I let the end of the block itself just rest on the tube. I placed both the clamp for this application, and the unused clamp for the down tube onto the two bolts, in addition to 7 washers on each bolt for space (as the threading on the bolt ended before the nut would even reach the clamps) and I tightened...
Snug fit!
Downside is that the carburetor barely squeezed in, even without the air filter on. So, instead of using the air filter assembly, I just placed the piece of cloth in front of the intake. I have no other option, the carburetor is literally right up against the tube. I'm in California, so it doesn't rain much here and this won't be too much of an issue, however I'm wondering how I can at least protect the topside from water.
