Not to bad of a job, get wheels for a late model 750 and front and rear with rotors. Lots of tire choice... or you can by forged wheels for a 750.The bike I did ran a 165 dunlop 209, front was a 120/70 front rotors were from a mid 90 tz same bolt pattern and offset was perfect.
Good Luck,
paul
The front is much less difficult because the actual overall tire dimensions (from a 120/80-16 to a 120/70-17) will be almost identical. Finding a wheel to use the older original (280mm) rotor-bolt pattern is getting more difficult. Newer axles are no longer the 20mm as on the front (remember the speedo drive), or the 17mm on the rear. Those, and spacers, can be dealt with though.
The major problem is that a modern 17-inch rear tire will not fit the stock swingarm, and the rear sprocket will not line up with the stock F1 front sprocket; so, you need a new wide (Verlicchi?) swingarm, new sprockets, etc. etc. Go to the Loudbike site and you can search a lot of photos of variants on the F1, and links to other sites with a lot of photos. Just start looking on line for F1 racers. A good Ducati book collection does not hurt either. All can be done, it just takes time and money.
I got a photo of the front on, but had trouble with a rear. Maybe I will try again.
I aquired a 1990 750 Sport swing arm in the hope of using it on the F1 and it will have the correct offset. If it works correctly, I was planning to take it off again and have it reinforced as I understand they cracked understress.
Has anyone compared the 750 Sport swingarm to one from a Montjuich / Laguna Seca or TT1?
Here are some photos of the rear. The 750 sport arms are close enough to use, but you are right to inspect it. You will need a Montjuich or Laguna Seca (offset to the outside) front sprocket and, then, a 520 chain.
I'm working on the same project as I have 18" and 16" wheels on my TT2.
I picked up this wheel set through a friend of mine in Japan. The are sized for the Montjuich and came with disk carriers to fit the disks from the Oscam wheels or you can use the brembo disks. The front is 3.50x17 and the rear is 5.00x17. You can run a 155 dunlop slick or a 150 dunlop 208 tire on the back. They are forged AZ80 magnesium and then machined. What I like is that they are made to the Campagnolo pattern but have a modern cush drive and 520 sprocket.
If you have a big block motor I think it is an easier change. If you have a small block motor like me you need to swap the swing arm and modify the counter shaft sprocket. I am working on a new swing arm in aluminum with the 28mm swing arm axle.
I have a lot of dimensions if you want to collaborate.
Here's my bike with the 16/18 wheel set. I ran a set of Avon race tires on the bike last month at Mosport and they are really excellent. The motor is a small block 650.
The 17" wheels are impossible to get without a contact in Japan. They are made by bito r+d and they make mag wheels for some well know companies. They are extremely light and very well made.
I aquired a 1990 750 Sport swing arm in the hope of using it on the F1 and it will have the correct offset. If it works correctly, I was planning to take it off again and have it reinforced as I understand they cracked understress.
Has anyone compared the 750 Sport swingarm to one from a Montjuich / Laguna Seca or TT1?
So Greg, do you have the dimensions for the 750 sport swing arm? I'd like to know what it measures between the cases at the swing arm bushing (should be something like 155 mm) and between the wheel bearings at the axle.
Also, is the swing arm symmetrical or is it offset on the chain side?
Once we figured out the chain and spockets we were on our way.
The 750 Sport swingarm as expected fits perfectly onto the 750F1 motor.
The issue was due to the widening of the swingarm and wider 17" wheel the chain was now aligning with the rear sprocket and not the front. The chain alignment was fixed by using an offset front sprocket (do not ask where I got it, because it came with a Laguna Seca and I have no idea where to get one ... if you find a source, please post it).
So we are using a 750 Sport swingarm with a 1991 851 5.5" wheel and the issue we are having is the alignment of the brake caliper. What we are looking for this week is the caliper carrier and rod to mount the 900SS rear brake in the hope this will align everything as it is meant to be.
Keep your fingers crossed, we will have 17" wheels rolling on the F1 ... very very soon.
is 13.5 inches on the F1 with aluminum swingarm. The back ends of the swingarm on the F1 and even the 900SS aluminum arm are virtually the same width. 750 sport arem the same I would bet. The axle is only 12.5 inches on the 900 because of the recess areas where the nuts and sliders go.
Not to bad of a job, get wheels for a late model 750 and front and rear with rotors. Lots of tire choice... or you can by forged wheels for a 750.The bike I did ran a 165 dunlop 209, front was a 120/70 front rotors were from a mid 90 tz same bolt pattern and offset was perfect.
Good Luck,
paul
Hey partner, is the mid '90s TZ you're talking about a TZ250 racebike?
I ask because I'm contemplating making a switch this winter.
.
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Live to Ride, Ride to Lunch!
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I have been trying to reach you but lost your phone number, I have a few question about your TT. I am getting a project F1 in a few days and will convert it to a TT racer. I have all the engine parts left over from my F1A build, so I need to source body swing arm and other bits. I have questions about the wheels. Has anyone considered using Aprilia RS250 wheels, if so how about some feed back. You bike is top shelf, I still have the 250, it's on the floor of my show room and gets lots of attention.
Ducati 750F1 - Wheel swap to 17"
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