After that quick vid there's the posting of multiple other vids...check the 52 minute one on EBR in the upper right hand corner! First of three parts apparently.
The only "octane booster" worth its salt is high-end race gas. The crap at the Harley shop is like "synthetic weed"...
Most larger cities will have a bulk station that carries or can order the "good stuff" Ask for Sunoco race gas. I used to feed my Sporty in San Diego a quart of 118 and 2 gal of 93 octane pump premium. I did a very basic flow to the heads and ran 12:1 pop-tops. eeeeh-haaaa!
Another source is small airports. Avgas 100 lo-lead(about 3X the lead in premium in 1971) works great in old hi-comp motors.
I used to run a '63 split-window on 1/2 tank pump premium(91) and 1/2 tank 100LL. 12:1 comp, solid lifters - OEM 340/327 (37 gal touring tank) The guys in the fuel truck at the airport used my license plate # for the fuselage #.
When I took it to Texas to show it off, I started looking for small airplanes about 1/2 tank.
Not all airports will let you fill a car with 100LL. Fact is most won't because it is illegal. Now if the car is on a trailer you can say it is a race car more will fill it. Better yet bring gas cans and tell them it is for your airplane that is at some airport that has no gas be prepared to give them an N#.
I do not recommend using airplane fuel or octane boosters on our bikes, as they usually contain lead, which will damage the O2 sensors. In addition to that, you won't see any advantage to using higher octane fuel if your bike is not tuned to take advantage of it.
Have agree with Zac about octane boosters. I tried using some in my Fantic 300 trials bike since they're well known to detonate. It made no difference at all. When I blagged some Sunoco race fuel (mixed with oil at 85:1) the problem ceased to exist
when you say 'boosted', exactly what do you mean? turbo? cause that it is not better specs than normal - that is true, but I think the mods are pretty limited in DSB on these.
> that bike is boosted and only puts 150 to the rear wheel? sad.
It's a high-compression motor, that's really the only mod. It is super-stock legal in most race sanctions. The Jap bikes do this, too, using race gasket to set the squish.
Blueprinted, upgraded rod bolts, and a competition gasket along with careful assembly. Mine is producing 155hp on Cambora's dyno here in Texas, which can be a titch generous. I'd say it's probably right at 150 and small change at the wheel.
Not bad for a motor with nearly the same reliability as bone stock.
The DSB does NOT have a turbo or a supercharger. It puts 150HP to the rear wheel, so its making like 170HP at the crank.
The reason it is so fast is because its lightened, re-geared, tuned, etc. etc.
Remember its not always about how much power you have, but how you use it.
According to Jamie in this clip the DSB is slightly quicker than a stock BMW S1000RR. Which make sense because the DSB is a dedicated track bike. Of course a track prepped S1000RR will mop the floor with the DSB.
Well I'm talking about quarter mile and 0-60. If you listen to the times Jamie states in the video clip you will see that those numbers are slightly faster than what the S1000RR can do (in stock trim):
Of course after about 120mph the S1000RR would begin to run away.
Of course I have to assume Jamie isn't exagerrating either, but I don't think there are any officially verified numbers on a DSB because of the rarity of the bike.
I WISH I could say my DSB is quicker than the S1000RR (a lot of that has to do with the equipment located above the seat and behind the handlebars). Me thinks Jamie might be speaking out his arse...
IDK its hard to say but I think it would be pretty close. Especially if you think about the torque. A 1125R in stock trim is rated at 82lb-ft of torque vs the S1000RR with 83lb-ft.
Then if you consider how much more HP the DSB has than the stock 1125, the torque HAS to be up around 90 lb-ft on the DSB. And we all know in 0-60 and 1/4 mile torque makes a big difference.
But I am confident in saying that we will never know. But if I were a betting man, I'd say they would cross the 1/4 mile marker within 5-10 bike lengths of each other. (Not factoring in the riders of course.)
> But I am confident in saying that we will never know
The 1125r-DSB starts really well, so perhaps there's something to your drag/bench race, but I'm here to tell you in a head's-up on any real race course with the DSB vs BMW, it's a non-contest. The BMW is a crazy-fast bike for being bone stock.
EVERY BMW but one that races in the CMRA has blown a motor within two seasons, btw. It makes me think the bikes come stock already pretty high strung.
BMW is going to mop the track with the Buell. You are comparing such completely different motorcycles, and I'm not convinced Jamie is expert enough to reliably make this comparison.
I've seen two BMWs with rods through the cases, one at the track and one on the road. I sold a Paul Smart rep Ducati to a BMW Dealer for his personal collection, and while have a chat when he collected the bike, I mentioned this and he replied that plenty had been through his workshop with blown motors. He mentioned something about a 'secret' recall too, but didn't go into detail.
I was chatting to a guy from a local BMW dealer last year and they had also had to repair a couple with broken rods ...there was a recall to replace the rod bolts that had been incorrectly torqued on assembly ..... something to do with the bolts supplier pre locktiting the bolts and so needing a higher torque setting because the setting they were using was for clean threads.
Well, I was talking about the bikes being equally matched to test the myth in this video clip. So the speed most important would be the bike accelerating from a stand still as quickly as possible in a drag race type scenario. So in that sense the DSB is just as quick as the S1000RR. On a track, I guess depending on the track, the DSB would be outgunned. Sorry, I should have been clearer.
BMW issued a recall for bikes built between Sept. 1, 2011, through April 10, 2012 to address an issue with bolts that secure the connecting rods to the crankshaft that could loosen when the bike is driven at high speed.
From what I understand this was not a small issue. I watched videos of techs fixing the problem and there was extensive disassembly involved. People were reluctant to have the bike fixed like that b/c they were worried that the tech at the local BMW dealer doing the job wasn't really qualified to do such extensive work. I think most people demanded and received a new bike. But they had to wait several months for the 2013 models to come out.
JD - I'm jumpin in on this one. My XB12 (not an R, but Scg) tops out at 125 - that is, banging off rev limiter in 5th. Maybe you can get a jump on a R6, but it'll start pulling away pretty soon after.