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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Jul 22, 2014 7:12 am 
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auburn wrote:
A guy close to me has some 17 inch astralite wheels not my favourite but I recon I can save around 5 or 6 kg per wheel , I will go and take a look at them this weekend.


you might find a sudden liking for them once they're in.


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Jul 22, 2014 8:09 am 
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They are now being remanufactured just a few miles from where I live but good used ones will do .
At the moment they only supply for race bikes from around £1100 a pair.


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Jul 22, 2014 12:05 pm 
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Joined: Fri Oct 15, 2010 12:20 pm
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Location: Vermont, USA
I've always thought Astralites were about as cool as wheels could get. Last time new ones were discussed they were only making 18's and not particularly Ducati/Pantah friendly. That may not be the case now.
Bill
http://www.ducatittandf1.com/viewtopic.php?f=10&t=3937&hilit=astralite&start=0


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Jul 22, 2014 3:03 pm 
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2013 TPCS rear Dymag(2).jpg
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Astralite wheels are not.

They are very strong though.


Dymag H - section are light and strong

So are the new Marvics , and it's positive to reduce unsprung weight : acceleration and steering .



(Got to say that I'm slightly biased towards Dymags having used them for over twenty years and have no reason to change )


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Jul 22, 2014 4:15 pm 
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Have to agree about the dymags they are my first choice but dont often come up for sale in the sizes I need.


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Jul 22, 2014 4:24 pm 
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auburn wrote:
dont often come up for sale in the sizes I need.


I need a size to suit a very small wallet :?

:lol:

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Mike, Sydney Australia
https://www.facebook.com/groups/HandHeldDyno


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Thu Jul 24, 2014 1:58 pm 
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Joined: Wed Sep 11, 2013 7:13 am
Posts: 268
about the faster turning in and gyroscopic effect :
When You pull hard on the handlebars and steer left, the gyroscopic effect will try to tilt your bike to the right, in the meanwhile You're steering your frontwheel from under your bike to the left, making it go right and ergo : faster turn-in.
The heavier the wheel, the more the gyroscopic effect but the heavier the wheel :-)
I didn't find (didn't look for it either) of real mathematical proof about the forces and the best weight/effect ratio.
Another way to go is increase the distance between forkstem and forks, making the trail less.
Then the force to turn the fork/wheel becomes less, making it easier.
Reducing the trail minimizes the force that tries to get the bike back upright while leaning over, so this helps also.
BUT it has a BIG impact on straightline stability, making tankslappers a real treat (or threat, whatever fits You).

To stop this gyro-turn-effect-proces, reverse steps.
Practice and a wheelie through the chicane becomes easy, no need for 100+ hp.
A word of caution : just like drifting, it becomes an addiction :-) and just like drifting You WILL overdo it sometime but unlike drifting, the damage of sever case of understeer is usually hurting like hell.

have fun
ducadini

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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Aug 05, 2014 4:16 am 
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Hi, I am still looking for different wheel s, but takeing a look at my tire sizes
I think I have over done it with the front tire its a 110x90x18 thats a big tire it dosent look right. The rear is 130x90x18.
I am thinking of dropping to 100x90x18 , or even 90x90x 18
The front realy dose need to be lower I have more space to drop the forks
But the tire issue realy stands out to me.
When compare ing sizes it will lower the front narrow the tire and be a little lighter all of which are good .
What do you think?
What sizes do you run?


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 Post subject: Re: what will help the bike turn in better ?
PostPosted: Tue Aug 05, 2014 7:38 am 
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Joined: Tue Feb 21, 2012 4:38 pm
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we were advised 90x90x18,but we didn,t get round to trying so can not advize,but it sounds that it would ease your steering,it should work well for you.


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