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Message started by Robertomoe on 02/11/08 at 17:38:00

Title: motorcycle street scoop
Post by Robertomoe on 02/11/08 at 17:38:00

anyone ever seen one of these on a motorcycle? I was thinking it would be a great addition to a bobber or chopper Savage.

http://www.hothemiheads.com/Garlits_Scoops/images/SC510/SC510cr/E02.jpg

Title: Re: motorcycle street scoop
Post by verslagen1 on 02/11/08 at 18:05:48

Look up hypercharger

Title: Re: motorcycle street scoop
Post by KwakNut on 02/12/08 at 02:44:29

342730312E2325272C73420 wrote:

Look up hypercharger

A cleverly marketed product by the look of them, but they seem to leave very little room around the filter for good undisturbed flow - while they look nice I wouldn't be surprised if they lose power compared to a standard airbox with K&N replacement.

Title: Re: motorcycle street scoop
Post by Robertomoe on 02/12/08 at 10:57:28

I also looked and saw that the pressure constantly varies in the carb, so to fix that you have to create a tube into the float bowl so the pressure remains equal

Title: Re: motorcycle street scoop
Post by T Mack 1 on 02/12/08 at 11:38:19

http://www.kuryakyn.com/category.asp?bn=metric&cn=Air+Cleaners

Title: Re: motorcycle street scoop
Post by Rockin_John on 02/12/08 at 12:21:59

7D404D4A5D5B4042404A2F0 wrote:

I also looked and saw that the pressure constantly varies in the carb, so to fix that you have to create a tube into the float bowl so the pressure remains equal

I would think that such device could make tuning tricky. A while back I was in a Honda dealer looking at 1100 Sabre and VTX1300. Discussion with a longtime sales drone turned to tuning the single carb and single throw crank 1300, to be as quick as the dual carb and two crank pin 1100.

He claimed that their service manager had found a combination of Hard-Krome (??) pipes and hypercharger that would dyno the 1300 up to 15-20% HP increase with their "expert" ::) tuning; which supposedly involved more than simple re-jetting. I suspect that equalizing the float level; or maybe a Dyna Jet were involved, but he wouldn't give away the whole formula. He did tell me that the mods would run $750-$850 in their service department!

I'm not sure I'd be willing to have the thing sticking out in the way even if it did give the bike a couple more ponies. I thing their main function is "bling" to impress the easily impressed.

Title: Re: motorcycle street scoop
Post by vroom1776 on 02/12/08 at 12:58:45

they don't really increase performance much over stock. On a V* 1100, the effect is about the same as switching the air filter to a KN. people over there say "Pods for go, hypercharger for show." most folks end up completely removing the stock airbox and running 2 kn pod filters, and rejetting accordingly.

Title: Re: motorcycle street scoop
Post by thumperclone on 02/12/08 at 13:00:44

more than bling, dyno proven increase in h.p. air pressure increases as speed increases

Title: Re: motorcycle street scoop
Post by Ed L. on 02/12/08 at 16:34:39

I was thinking about modifing the right side cover on a savage by taking a hammer and pounding the leading lip into a scoop that sits out in the airflow. Pull the air box cover and you should have a cheap functional ram air scoop that flows air into the airbox when riding. The faster you go the more air gets stuffed into the airbox. Kinda low tech but can't see why it wouldn't work.

Title: Re: motorcycle street scoop
Post by Trippah on 02/12/08 at 20:05:08

Legs?

Title: Re: motorcycle street scoop
Post by Educatedredneck on 02/12/08 at 23:25:16

Legs are optional!!!! ;D

Title: Re: motorcycle street scoop
Post by KwakNut on 02/13/08 at 01:03:19

594558405D485F4E414243482D0 wrote:

more than bling, dyno proven increase in h.p. air pressure increases as speed increases

It would be interesting to see how that was proven.
Ram air is nothing new, but it's not a magical source of extra air.
I remember seeing figures for the Ram Air 400 model of the Pontiac Firebird - it had a pair of well-positioned scoops on the leading edge of the hood, which would give about 3% boost at 100mph.

A lot of modern bikes have ram air systems now, but to get any real benefit 2 things are needed:

1. A really big air box to act as a receiver reservoir for the 'charged' air
2. Forward speed over 100mph to see real benefit.

A dyno will tell you just about anything the operator wants you to see, especially when somebody is trying to market a product, and I'm yet to come across a dyno outside of a motor manufacturer's own labs with a powerful enough fan to simulate 100mph forward speed.

For a cruiser bike, that's rarely likely to see over 75mph, ram air is about as much use as tits on a bull.

Title: Re: motorcycle street scoop
Post by T Mack 1 on 02/13/08 at 07:32:38

But it's shiny, looks pretty and is yet another gaget to play with.... ;D

EDIT: some may like the skull filter too:
http://www.kuryakyn.com/products.asp?bn=metric&ci=3712

Title: Re: motorcycle street scoop
Post by Holodeck on 02/13/08 at 15:20:53

A while back the guy from Spain had a picture of one on a Savage, sure did look cool.