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steff_dk
Joined: 14 Jun 2015 Posts: 88 Location: Denmark
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Posted: Sat Jun 11, 2016 3:31 pm Post subject: Cornering a two-stroke |
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Did my first trackday on the V-due yesterday.
The bike is a completely different beast from the Duc 748 I had.
On the Ducati I would go down through the gears and let the engine brake, before hitting the brakes and turn in.
On the V-due I found myself wanting to grab some brake before going down the gears, and then brake again and turn in.
I think it is because there was no mentionable engine braking going on, and I am a bit unsure of the lubrication of the pistons when I am off the throttle ...
It revs pretty high especially when coming down the straight and into a corner.
How do you guys go about this?
Obviously the lack of engine braking caught me by surprise a couple of times and I came in much too hot and ran wide - but I am learning
On the other hand I could see that even when I got it right, the V-due preferred turning in much later than the rest of the gang.
I was happy to see that it had no problem hanging onto bigger bikes on the straight.
What an amazing bike it is!
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steff_dk
Joined: 14 Jun 2015 Posts: 88 Location: Denmark
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Bud977
Joined: 03 Mar 2013 Posts: 525 Location: Sydney
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Posted: Sat Jun 11, 2016 10:18 pm Post subject: |
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Yes, you want to get rid of that habit of changing down gears first. Brakes are for stopping, gears are for matching the engine RPM to the road speed.
When approaching a corner, pick your braking marker and apply the brakes. Always use the front brake. The rear brake is optional.
As you approach the apex, change down gears so that you end up in the right gear to drive out of the corner. You should be in the correct gear before you hit the apex.
I use a fair bit of engine braking, even on a two stroke. As you brake, change down to keep the revs in the desired RPM range. I'd imagine on a VDue that would be 6000-9000 RPM.
As you improve, you can move your braking marker further down the track.
Good luck and I'm very envious of you getting to ride a VDue on the track. |
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trev45
Joined: 15 Jun 2011 Posts: 449 Location: Sydney Australia
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Posted: Sat Jun 11, 2016 11:58 pm Post subject: |
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They are great on the track
Trev |
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Matty82
Joined: 10 Jul 2014 Posts: 155
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Posted: Sun Jun 12, 2016 11:55 am Post subject: |
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Trev, I'm building a track only vdue, in your opinion carb or injection?
Cheers _________________ 2SMOKE |
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trev45
Joined: 15 Jun 2011 Posts: 449 Location: Sydney Australia
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Posted: Mon Jun 13, 2016 1:23 am Post subject: |
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Carb is easy , simple and works
EFI can work fine but with some up grades
or with a new system as the standed Bimota
set is a little ruff for racing it hard and fast
Get out on the track you will love it
Trev |
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redrobin911
Joined: 11 Mar 2016 Posts: 9
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Posted: Wed Jun 15, 2016 11:13 pm Post subject: |
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I agree - i used to race a TZ250 and now race Porsche 911's (vintage 65 911) and in all forms of motorsport the engine is not used for braking unless - a, your brakes run that hot that they fade and you need the engine braking to assist braking/prolong the time to brake fade or use the engine braking to help setup the direction of the car/bike at turn in - or both. This engine braking is widly seen in bike racing when trying "back up" into a corner - same thing can be achieved in a car and helps throw the rear out to get the correct turn in angle. |
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