Ducati TT1 Replica - 88HP, Track Ready (1986)
With 88 rear wheel horsepower in a sub-300lb package, this example is arguably the quickest and best handling old-school TT1 in North America.
I built this TT1 using period components as a relatively faithful replica of the TT1s that ran in the AMA BOTT GP class back in the day. The only deviation being the modern (90s) calipers and pumps, ignition coils and the non standard crankcase breather box in the seat. However, it differs from most TT1 replicas in that it was built to be a fast and reliable track bike. Over the years I’ve found that the only TT1 frame that seems to work well with modern 17” wheels & slicks is the final series Verlicchi large diameter, thin wall. Back in the day, Reno Leoni had his brother-in-law (DM Frames) make a copy of the Verlicchi and DM has since modified the jig to allow for the use of a big block motor. The DM version was checked digitally last year against the Verlicchi and they are geometrically identical, however the DM is 12mm longer between the upper cross brace and the steering head. I countered this somewhat with the offset on my triple clamps, but the small difference in trail gives the DM a bit more stability with a very small decrease in agility.
The specs are:
CHASSIS
DM TT1 Frame
Marvic 3-spoke magnesium wheels with floating 280mm Brembo rotors front and 260mm rear
Brembo P3034 calipers with authentic Brembo racing caliper adapters
Brembo 996 series pumps
Authentic TT1 Brembo rear master
Marzocchi M1R forks substantially modified by Lindeman engineering back in the day (they work like no M1R I’ve ever experienced)
Authentic TT1 Marzocchi 195mm triple clamps
TZ replica throttle
Scitsu electronic tachometer
Ducati early 851 clip-ons (Verlicchi)
Authentic NCR electrics plate
Bosch ignition (rewired pick-ups) with Dyna 3 ohm coils
Custom-built Stadium shock (rebound plus Hi & Lo speed compression adjustment)
Ducati 750 F1 aluminum swing arm
Leoncinni TT1 Replica floating rear brake caliper mount
Leoncinni TT1 Replica rear sets
Old Racing Spares endurance tank and TT1 seat with custom, integrated breather box
Bimota DB1R fender & mount
Romanelli TT1 fairing
loudbike open NCR replica exhaust
loudbike 85db Weber exhaust
ENGINE:
750 Sport-based bottom end built by Gary Palmer
800SS rods
Lightened clutch basket, clutch housing, primaries and flywheel
JPrecision heads with new valves, guides & seats and NCR #7 cams with STM adjustable pulleys
Modified F1B pistons (12.5:1 compression)
Mikuni TM Pro-series 41mm flat slides
Mikuni vacuum fuel pump
Modified Old Racing Spares cam end covers
Oil cooler with Starlite hoses, Earls fittings and top-end lubrication via cam end cover feed
Magnesium rocker covers
Dyno-tuned to 88hp, 56ftlbs torque
The whole kit is held together with over $900 in titanium and aluminum fasteners. Every bearing and seal in the motor and on the machine is new.
The bike is a highly-developed example of an old-school TT1 – works brilliantly on the track and handles better than any TT1 I’ve ridden. The bike and motor were built with care and a high level of attention to detail over an 18 month period. It was broken in correctly on the dyno and then saw six horsepower/tuning pulls and roughly 4.5 hours of track time. I’ve run the bike at Calabogie and Mosport – and came away delighted with the performance and handling on both occasions.
The fiberglass fairing is a period piece, so there are some minor surface cracks already starting to show. As well, there is some minor paint blistering (two quarter sized areas) from heat off the 95bd exhaust. You can see the dyno runs at:
http://www.youtube.com/watch?v=h6lMRYyqrz4&feature=share&list=UULXdTYwizBnNNHuc_JRjwKw
http://www.youtube.com/watch?v=-mt_-oKAIMs&feature=share&list=UULXdTYwizBnNNHuc_JRjwKw
You can read about the progress of the build on my blog at:
http://loudbike.blogs.com/loud_bike/2013/07/back-in-the-saddle.html
http://loudbike.blogs.com/loud_bike/2012/09/4th-annual-ducati-tt-f1-symposium.html
http://loudbike.blogs.com/loud_bike/2012/05/ducati-750-tt1-and-bimota-db1-sr-builds.html
http://loudbike.blogs.com/loud_bike/2011/12/winter-2011-loudbike-vs-bimota-db1-sr-ducati-tt1.html
And there are hi-resolution photos on my Flickr site: http://www.flickr.com/photos/loudbike/sets/72157635863581524/ To get to the hi-rez images, select one and then click on the icon in the lower right of the page (three white dots) and select view all sizes from the drop-down menu. The bike will be at the 5th Annual TT & F1 Symposium at New Hampshire International Speedway from October 4 – 6th; which presents US buyers with an ideal opportunity to save on shipping.
2013-09-25 22:39:35
500
20,000.00