SuzukiSavage.com - Ducati....112 mph, 350cc single?

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Ducati....112 mph, 350cc single?
03/30/15 at 09:35:30

OK....mpescatori is going to have to set me straight on this one.

I was reading an article about a fellow who restored one of these 350cc Ducati bikes....and the article listed the top speed at 112mph. I first just figured the guy was bragging - but then it appears that this is the mph figure that Ducati had posted for this bike with a megaphone installed - but they also claim only 22 HP?

http://www.topspeed.com/motorcycles/motorcycle-reviews/ducati/1970-ducati-350...

My 30 HP 650cc single Savage and 30 HP 250cc Ninja can just barely break 100 mph. When I was at the last measured mile speed run, a fellow on a road racing BSA Gold Star 500cc single was hoping to get up to 100mph but fell a tad short.

How can a 22 HP single cylinder 350cc motorcycle go 112 mph?

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Ducati....112 mph, 350cc single? Reply #1 - 03/30/15 at 10:18:52 Duuude,it's a Do Kah Tee, Hellooo,, AND it's Yellow,, Arguably the fastest color,, Jeeeze Louise, I gotta essplain everything?
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Oldfeller--FSO Serious Thumper ModSquad Offline Hobby is now "concentrated neuropany" Posts: 12671 Fayetteville, NC Gender:	Re: Ducati....112 mph, 350cc single? Reply #2 - 03/30/15 at 13:56:24 112 kph? That would be about right for a CB350 Honda .....
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Re: Ducati....112 mph, 350cc single?
Reply #3 - 03/30/15 at 16:57:51

Oldfeller--FSO wrote on 03/30/15 at 13:56:24:

112 kph? That would be about right for a CB350 Honda .....

I had a red 1970 CB350, demo with some miles, bought new, no mods. Ran premium gas. I routinely rode 70mph on I70 in Ohio, and once on an empty back road, twisted it up to 105mph feet on the passenger pegs, laying flat on the tank. It had more to go, but started squirming (pavement?) I got scared and shut down I only wish somebody still made bikes like that. Before that, I had a Suzuki X6 hustler 250cc, easily hit 90mph. This was all before gas got weird. And how about that Kawasaki 500cc 3 cyl 2 stroke rocket sled? A buddy claimed to have cracked 120mph!

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Re: Ducati....112 mph, 350cc single?
Reply #4 - 03/30/15 at 17:23:47

It's not a Honda twin or a Kawasaki triple....it is a single. I understand that adding cylinders can make it easier to go faster. Honda even made a 6 cylinder 250cc racing bike in the search for speed.

That is what has me baffled (or megaphoned)?

Singles are not supposed to be good at making high mph speeds. And 112 mph for a single cylinder road bike is incredible. Even if it does say Ducati and is yellow.

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Re: Ducati....112 mph, 350cc single?
Reply #5 - 03/30/15 at 19:17:10

Part of the secret of the Ducati claim is that this was the desmo single. A desmodromic (sp?) head has two sets of rockers. One opens the valve. The other closes the valve. There are no slow-acting valve springs to cause valve float at high RPM. Those 350's would spin up to 10k RPM.

I had a Ducati 250 (non-desmo) scrambler in high school. A 350 desmo was the holy grail.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Ducati....112 mph, 350cc single? Reply #6 - 03/30/15 at 19:24:48 justin_o_guy2 wrote on 03/30/15 at 10:18:52: Duuude,it's a Do Kah Tee, Hellooo,, AND it's Yellow,, Arguably the fastest color,, Jeeeze Louise, I gotta essplain everything? SEE? Whadi tell you? I was Right, for all the wrong reasons... I never thought about that Dezmo angle
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Ducati....112 mph, 350cc single? Reply #7 - 03/30/15 at 20:29:49 Pretty cool, huh?
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Re: Ducati....112 mph, 350cc single?
Reply #8 - 03/30/15 at 21:59:39

The little 250cc Mk3D could get up to 100mph as well...and could rev to 8000rpm all day or until the bottom end collapsed, whichever came first. Awesome little motorbikes and sound so good....Have ridden a couple and I can vouch for the fact that they go hard. Not as quick off the line as a Savage but wind out further. Bear in mind t that the factory test riders were 5', 50kg Italian fellows. I doubt a 350 would get near that top speed with a full size American on board. Less than 100 for a 500cc Goldie is disappointing.

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Re: Ducati....112 mph, 350cc single?
Reply #9 - 03/30/15 at 22:39:28

Had me one o' them 3 cylinder Kawasaki's back in the early 80's.... sold it after about 4 months.... scared the heck outta me!
Well that and I had wired a pair of vice grips to the clutch handle to hold the clutch cable.... sometimes I just had to shut it off and let it die while sliding around......cause the grips would let loose of the cable.....
Yeah... I had gonads back then... well and my brain wasn't fully developed yet Cheesy

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Re: Ducati....112 mph, 350cc single?
Reply #10 - 03/31/15 at 04:14:24

Well Cycle Magazine in their 1967 test article wrote:

“The 350 was more highly tuned and had a narrower powerband; the power came in at about 6,500rpm. The 350 is tuned as a street dragster; the 250 and the 450 are over-the-road bikes.”

So...maybe this little Ducati single is more of a race bike than we are used to with our mildly tuned Savage single. Most single cylinder bikes made today are built for the novice or dual sport rider - where a narrow power band is not all that helpful.

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Re: Ducati....112 mph, 350cc single?
Reply #11 - 03/31/15 at 12:25:42

Just had to sell my little 1969 Ducati 250 Monza after owning it for over 10 years. It had a Scrambler cam (better top end) and the smaller valves in the head but still could top 85mph even with my big 200 lb butt on it. 112 mph for a 350cc Ducati is what they were rated at, I believe it, the Desmo heads with twin plugs and big valves made any of the bevel head singles screamers. Even my 250cc Monza was rated over at 20hp and that was with a 9.5:1 piston. If I remember correctly Ducati offered pistons up to 11:1 compression for thier singles, was lookig into a hi compression piston for a rebuild of the Monza but didn't want to have to deal with kick starting it.
Sweden copied or used the Ducati 450 Wide case single made in the early 70's for thier military. Saw one at an reenactment a few years ago all dressed up in military drab, real nice. Think it was called a Falcon or Zephyr can't remember Sad

. Another lost single to lust for

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gizzo Serious Thumper Offline SuzukiCabbage. It's Savage. Posts: 1318 Australia	Re: Ducati....112 mph, 350cc single? Reply #12 - 03/31/15 at 13:00:01 That would be the swiss Condor. Moto Trans in Spain made Ducati singles under license as well, nice bikes by all accounts. The condors are becoming sought after as a less expensive way to build a shotgun replica.
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zipidachimp Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1411 surrey, b.c. Gender:	Re: Ducati....112 mph, 350cc single? Reply #13 - 03/31/15 at 13:11:01 cheap at half the price! http://vancouver.craigslist.ca/van/mcy/4957930847.html ducati singles were lightweight bikes with strong engines, engines were part of the frame. raced a 250 mark 3 back in '70s, non-desmo. sold it after I got married for $350.00
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Ed L. Serious Thumper Alliance Member Offline "We All go a Little Crazy Sometimes" Norman Bates Posts: 2808 Sunny Florida Gender:	Re: Ducati....112 mph, 350cc single? Reply #14 - 03/31/15 at 16:25:43 Condor, yeah that's it, nice 450 single, thanks.
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