Got my TW FAT front tire conversion ready for test ride this past weekend. I like it so far. Would load a photo but like others not getting desired results putting them on this forum. The insert image icon is ineffective.
post of in work photo.Picture shows the original front brake hub removed from 18" wheel and bolted to rear wheel hub with axle hole drilled to fit rear larger axle. Spoke holes in front brake hub are open as this was unlaced from original front wheel. Test fit mount before Shinko 428 tire installed.
this side has the sprocket flange removed and wheel hub cut to 3" and 1 wheel bearing removed. Rear wheel axle spacers were cut to give proper center of wheel in front forks.
Here is the BW 200 triple tree mounted using TW stem bearings. Fork legs axle holes are drilled out to use 17mm rear axle(front axle is 15mm)
Ready for a test ride with Shinko 428 tire mounted. Still working the headlight mod and turn signals. FATTY!
I also cut 6 inches off the front of the seat pan and removed some seat foam then recovered the seat with new upholstery. Purchased a 45 tooth rear sprocket and installed along with o-ring chain. This vintage 1987 TW 200 is looking pretty fresh and runs excellent. I did this change to my first TW and liked the 45 tooth rear over the 50 and 47. So this being my second TW I went for the 45 right away.
I test rode about 15 miles so far and the steering is a bit different with the Fat front tire but not bad. You can feel the gyro effect of the spinning heavier tire/wheel assembly more. It is totally useable and the stock front brake feels as good as with the 18" front wheel. I had the TW up to 45 mph actual but the speedo is off because of the smaller overall size of the FAT front tire so indicator reads 52 @ 45. And I love how it looks!
Very cool! Nice job. I really like your idea of adapting the front brake hub to the rear wheel that is used up front. Looks much cleaner, requires fewer modifications and provides better braking. As soon as I collect a few more parts I will be starting my fat front wheel mod using your approach. Thanks!
Gotta give mmanddalla the most credit as his pictures put me over the edge for getting it going. If you have the front disc brake model TW you will have to post how you convert it to fit the fatty and keep the disc.