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The John Norwich Riders CornerIn honour of our fellow moderator: John Norwich R.I.P. September 17th, 2014
Buy, sell, trade bikes and gear, set up bike rallies, meet discussions. #revscenebikes
21' 718 Cayman GTS 4.0
23' VW MK8 GTI 40th Anniversary
18' Tesla Model 3 LR RWD
21' Ducati Streetfighter V4 S
-- 16' Mineral Grey F80 BMW M3 6MT SOLD -11/22
22' Halo Toyota GR86 6MT SOLD -11/22
12' Phantom Black - B8 Audi S4 - SOLD 04/19
07' WDP Acura TL Type-S - A-Spec/ATLP/H&R - SOLD 12/17
18' Matte Silver Ice - Triumph 765 Street Triple RS - SOLD 4/21
Having pioneered the use of winglets in MotoGP over the last few years, Ducati’s engineers will be understandably miffed to see their work go to nothing this year as that technology is banned. But far from crying into their espressos the firm’s boffins have come up with something even more ingenious.
At the moment, only a lone patent document reveals any details of what might turn out to be the firm’s secret weapon when it comes to maximising performance on the track. The tech hasn’t been seen on the 2017 Desmosedici GP17 yet, but on paper the design appears to show a lot of promise.
It’s an exhaust that works like a jet engine to add thrust and help minimise the loss of winglets by helping keep the front wheel on the ground during acceleration. It sounds crazy, but bear with us because the line between genius and madness is so fine as to be invisible. If it works as hoped, this idea will fall on the genius side.
The system is actually quite simple. It works like the tailpipe of a fighter jet engine. If you’ve ever seen Top Gun you’ll be familiar with the way that military jet exhausts have variable geometry. An array of interlocking petals surrounding the jet pipe’s exit allows it to be widened or narrowed, altering the thrust coming out.
Ducati’s patent reveals identical sets of petals, operated via electric motors, inside the exhaust tailpipes of a Desmosedici. Just as on a fighter plane, the petals allow the size of the hole in the end of the exhaust to be made larger or smaller.
The idea is that when the hole is smaller, it will create more thrust. Just as you would purse your lips to blow out a candle, the smaller exhaust exit increases the speed and thrust of the gas coming out of it.
There’s a downside to that, of course. Bike exhausts are usually as unrestrictive as possible to ensure they don’t sap the engine’s power. This system would definitely harm the bike’s overall output if the exhaust outlet remained small all the time. But by having a variable-sized exit, Ducati gets the best of both worlds.
It makes a lot of sense. For much of the time, a GP bike simply can’t put down all of its power. Either there isn’t enough grip or the laws of physics mean it would flip over backwards if the engine was unleashed in full. In those situations, normally the only solution is to hold back the engine’s performance.
The jet-style exhaust gives an alternative method of thrust, allowing a bit more fuel to be converted into forward motion. Normally, once the rear tyre is putting down as much power as it can without spinning, you’re at the limit of possible acceleration. With this system there’s an additional way to get even more forward motion without asking the tyre to work any harder.
What’s more, because of the angle and position of the Desmosedici’s exhausts, the thrust tries to rotate the bike forwards around its centre of gravity. That means it’s helping to reduce the bike’s tendency to wheelie, foiling another of the physical laws that usually forms a firm limit as to the potential maximum acceleration on a bike.
The downside? Presumably the bike will burn more fuel in getting this additional performance. But if it gives a race-winning edge, that’s something the team will surely be happy to live with.
At the moment it’s not clear whether Ducati has tested the idea, or when it might appear on a race bike. It’s also not known whether the firm has wider plans for the concept but Ducati rarely patents technologies that it doesn’t hope to use in production at some stage.
There’s a new Ducati superbike expected for 2018. A jet-assisted exhaust could be an interesting selling point to mark it out from the competition…
any of you guys order from a site called https://ca.chromeburner.com/ ? im looking at some gear and they got some competitive prices just wanted to make sure its legit
any of you guys order from a site called https://ca.chromeburner.com/ ? im looking at some gear and they got some competitive prices just wanted to make sure its legit
I havent but it looks legit. Its from the Netherlands like championhelmets amazing prices but they are terrible for customer service and eta on products. I will try chromeburner next time!
Yup, start booking now. No point in waiting. Get everything done ASAP. It sucks when your buddies go riding at night but you cant because of restrictions..
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Cash Rules Everything Around Me!
Current:
2006 Honda Fourtrax Rancher 400cc ATV (Offroad trails + Winter Snow Plow)
1995 Toyota Tacoma (Toy Hauler)
2003 Honda Civic SIR (Daily Beater)
2018 KTM 390 Duke (Gas Saver)
2017 Subaru WRX Sport-Tech + STI 6MT (Weekend Track)
Past:
2014 Honda Grom
1971 MG MGB Tourer
Kayo MR125 Race Bike
2001 Honda Odyssey
2009 Toyota Corolla CE
2007 Honda Ruckus
2007 Husqvarna SM610 SuperMoto
2001 Honda S2000
Yeah I'm looking at registering with 1st gear in Richmond since it's closest to me. Would a pair of Nike High top shoes be considered appropriate footwear that covers the ankles or I need something better?
Yeah I'm looking at registering with 1st gear in Richmond since it's closest to me. Would a pair of Nike High top shoes be considered appropriate footwear that covers the ankles or I need something better?
I wore regular shoes when I went to 1st gear. Not the greatest idea. Lee did mention I should get more protective shoes. I passed the class then bought a pair of astars. Can't ride without them now or it feels weird. My advice is invest in a pair of good riding shoes/boots
Yeah I'm looking at registering with 1st gear in Richmond since it's closest to me. Would a pair of Nike High top shoes be considered appropriate footwear that covers the ankles or I need something better?
Size?
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“The world ain't all sunshine and rainbows. It's a very mean and nasty place... and I don´t care how tough you are, it will beat you to your knees and keep you there permanently, if you let it. You, me or nobody, is gonna hit as hard as life. But ain't about how hard you hit... It's about how hard you can get hit, and keep moving forward... how much you can take, and keep moving forward. That´s how winning is done. Now, if you know what you worth, go out and get what you worth.” - Rocky Balboa
Yeah I'm looking at registering with 1st gear in Richmond since it's closest to me. Would a pair of Nike High top shoes be considered appropriate footwear that covers the ankles or I need something better?
If you dont have any gear at all, hit up Modern motorcycle. You could get a full setup at highly discounted prices when you package items together.
1st gear is a great choice, plus you get to try their RC390, Ducati Scrambler and I believe they will be getting a BMW310.
__________________
Cash Rules Everything Around Me!
Current:
2006 Honda Fourtrax Rancher 400cc ATV (Offroad trails + Winter Snow Plow)
1995 Toyota Tacoma (Toy Hauler)
2003 Honda Civic SIR (Daily Beater)
2018 KTM 390 Duke (Gas Saver)
2017 Subaru WRX Sport-Tech + STI 6MT (Weekend Track)
Past:
2014 Honda Grom
1971 MG MGB Tourer
Kayo MR125 Race Bike
2001 Honda Odyssey
2009 Toyota Corolla CE
2007 Honda Ruckus
2007 Husqvarna SM610 SuperMoto
2001 Honda S2000
I don't know how good those are nowadays, but I remember hearing about a couple people complain (10+ years ago) about having one of the 2 stands giving way and their bikes falling off the stands. It was all over BC Sportbikes at the time, so I never saw any of it in person.
But regardless, i'd rather spend the money on a good read stand (which I did) rather than 2, not so great quality (thin tubing), stands. And that alleviates any doubt in my mind about the bike ever falling over.
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2000 Honda Civic
2002 Honda Accord Coupe
2005 Ford F-150 XLT
2008 Mercedes C300
2012 Ford F-150 XLT
2014 Ford F-150 FX4 - Current
1999 Chevy Trailblazer
2008 Range Rover Sport Supercharged
2015 Honda Civic Coupe EX-L
2018 Honda HR-V Touring
2019 Audi A4 Technik - Current
2012 Porsche 911 Targa 4 - Current
10W-40 as per manual but canadian tire only has the motomaster brand and Lordco has one that says do not use with wet clutches
Trying to find amsoil but noone here carries it
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21' 718 Cayman GTS 4.0
23' VW MK8 GTI 40th Anniversary
18' Tesla Model 3 LR RWD
21' Ducati Streetfighter V4 S
-- 16' Mineral Grey F80 BMW M3 6MT SOLD -11/22
22' Halo Toyota GR86 6MT SOLD -11/22
12' Phantom Black - B8 Audi S4 - SOLD 04/19
07' WDP Acura TL Type-S - A-Spec/ATLP/H&R - SOLD 12/17
18' Matte Silver Ice - Triumph 765 Street Triple RS - SOLD 4/21
RS.net, where our google ads make absolutely no sense!
Join Date: Oct 2005
Location: vancouver
Posts: 916
Thanked 56 Times in 21 Posts
I personally like the Motul stuff. I run motul 5100 10w40 in my bike.
Check www.fortnine.ca for the best deal for motul oils. $54.xx for a 4L jug as opposed to anywhere locally they charge $65 and up. Also ONLY 5% tax and free shipping as well.
Fuck ya to only paying 5% tax as opposed to 12% locally.
Quote:
Originally Posted by LP700-4
Whats a good oil for bikes?
10W-40 as per manual but canadian tire only has the motomaster brand and Lordco has one that says do not use with wet clutches
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
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