Shane661
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posted March 02, 2009 10:53 AM
 Edited By: Shane661 on 2 Mar 2009 18:58
Smaller Front Fender/Lost MPH?
I've heard of some reports of lower mph at the track when using a 10R front fender. If anyone has experienced that, please provide some feedback here.
I'm trying to do some reasearch since I am going to be testing a smaller fender. Some feedback I have from elsewhere tells me that the larger fender of the 14 may not make a measurable difference in speed. Aerodynamics can be complex.
Any info appreciated, thanks.
Shane
  
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zxbob
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posted March 02, 2009 11:14 AM
I'd think "maybe" a difference at the Texas mile, but nothing in a 1/4 mile.
Bob
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Shane661
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posted March 02, 2009 11:22 AM
Edited By: Shane661 on 2 Mar 2009 19:33
I am going to try mine at Maxton, depending on what I see in the 1/4.
The fender I'm fitting is very small, from a 1098:
I'm sure a few guys here have run the 10R fender at the track, and I'd love to get their feedback.
Shane
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dubious
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posted March 02, 2009 12:18 PM
I had gotten a report from one of the guys stating that with the zx10r fender they had lost 1-2 mph trap speed in the 1/4 mile.
I can't remember who.
I personally have experienced drop in top end top speed accelleration naturaly... just brocks pipe, and no fly's for power adders.
I would say that you will definately lose some top speed due to the fact the 14 fender is designed to wick the air around the bike, whereas the zx10 fender allows more air to enter the rad, which would increase the aerodynamic drag somewhat.
For top speed, I would definately say the small fender will cause lower speeds.
For 1/4 mile I would agree that a very slight change in trap speed might be seen.
For the 1/8 mile I would suggest the speeds are not high enough to cause any effect,
If anyone has a 10 fender to donate to Lee or Pat, I would donate the brackets for testing purposes.
I would chose Lee, or Pat as thay have proven to be the most consistent with our bike.
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Shane661
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posted March 02, 2009 12:29 PM
Edited By: Shane661 on 2 Mar 2009 20:54
It will be around 6 weeks before I can test anything...
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dubious
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posted March 02, 2009 01:01 PM
Lee and Pat are still riding though, and are very consistent.
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ninjaboy311
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posted March 02, 2009 01:16 PM
Racing every weekend...would be happy to test if anyone wants to send one over....
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Shane661
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posted March 02, 2009 01:27 PM
Pat, how consistent is your mph?
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ninjaboy311
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posted March 02, 2009 01:35 PM
As long as there isn't a head wind....its usually within less than 1 MPH every pass.
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Shane661
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posted March 02, 2009 01:40 PM
I looked on Ebay, but no reasonable prices for 10 fenders right now. Hopefully someone else will donate one for testing...
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ninjaboy311
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posted March 02, 2009 01:47 PM
I will look around too, see what I can find.
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Shane661
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posted March 02, 2009 01:50 PM
The only reason I didn't buy Lyle's brackets is that I need to lower the fender anyway for a 60 series tire...
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Compton
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posted March 02, 2009 04:25 PM
i got a black 07 fender if you want to try it ninjaboy.
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b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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dubious
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posted March 02, 2009 04:36 PM
Great, and I will ship the brackets off Wed morning.
Pat, please email me your mailing address.
eldubois@telus.net
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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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Shane661
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posted March 02, 2009 04:53 PM
This will be a great experiment! My thanks to all involved. 
Shane
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Shane661
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posted March 02, 2009 05:00 PM
Edited By: Shane661 on 3 Mar 2009 01:01
If there is no change in 1/4 mph, I will definitely be able to accurately test my small fender at Maxton with repeatable results.
Here are my runs from October last year
10/25/2008 17:24 189.65925
10/26/2008 8:40 189.19005
10/26/2008 10:45 185.46414 (changed windscreen, headwind)
10/26/2008 13:29 189.39837
10/26/2008 14:47 190.76122 (pulled strap down more, different tuck)
Because you are in top gear for around 10 seconds, you are really tapping out the mph and there is little variance without changes to the bike.
Shane
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smokinZX14
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posted March 02, 2009 05:25 PM
I would think the 10 fender would slow the bike in a mile run ...( More air hitting the Rad ) Everybody says with a zx10 fender the bike runs cooler so more air must be getting to the rad ... I'll be happy to test one in the 1/4 if if you like but i don't think at 154 mph we will see much difference ... I could be wrong ..
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Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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ninjaboy311
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posted March 02, 2009 05:57 PM
quote:
i got a black 07 fender if you want to try it ninjaboy.
Cool, a black ZX-10 fender, correct?
Shoot me an email...
pchabaud@cox.net
Thanks
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Compton
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posted March 02, 2009 06:47 PM
email sent.
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b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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dubious
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posted March 02, 2009 08:40 PM
Hey Lee,
Thanks for the offer.
We already have things set up with Pat.
I would be satisfied with either of you testing, Pat just got the internet holeshot is all.
I may still be interested in a second trial though, and will definately keep you in mind Bro!
Thanks 
Lyle
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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dubious
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posted March 02, 2009 08:43 PM
Edited By: dubious on 3 Mar 2009 04:44
Will ship out on Wednesday morning when I get back home guys!
Will look into the quickest reasonable mode of shipping.
The brackets themselves weigh under 4 oz., and were designed for 1/4" clearance over the stock tire.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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smokinZX14
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posted March 02, 2009 09:07 PM
quote:
Hey Lee,
Thanks for the offer.
We already have things set up with Pat.
I would be satisfied with either of you testing, Pat just got the internet holeshot is all.
I may still be interested in a second trial though, and will definately keep you in mind Bro!
Thanks
Lyle
No problem ... Let me know if you need anything .. ..
____________
Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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ninja12
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posted March 02, 2009 09:24 PM
Edited By: ninja12 on 3 Mar 2009 05:25
I have a green zx6 fender I'd loan for 1/4 mile testing if you want to donate the brackets.
rattle can paint it if needed.
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Ozonkiller
Expert Class
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posted March 03, 2009 03:44 PM
Hmmm.
I gotta ask why do we see land speed bikes with the front wheel almost fully enclosed.
Therefore I gotta believe that the smaller fender would be a bad thing, speedwise.
No proof on my part, mind you... just a thought
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Halvefast
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posted March 03, 2009 08:14 PM
I've used both at the dragstrip, and no difference as far as I can see
except the bike cools down a whole lot faster with the 10 fender.
Now I'm sure it will make a big difference in LSR events.
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