minnescoota.com Forum Index
Author Message
<  Classifieds  ~  lambretta frame
n8murphy
PostPosted: Sat Feb 11, 2006 1:33 am  Reply with quote
Training


Joined: 01 Dec 2005
Posts: 28

lookin for a wicked cheap lambretta frame. i plan on cutting it up and someday hope to have something i can take to the salt flats.
Back to top
View user's profile Send private message  
Corey
PostPosted: Sat Feb 11, 2006 2:48 am  Reply with quote
Noob


Joined: 18 Jan 2006
Posts: 6

Boss.
Back to top
View user's profile Send private message  
some_dude
PostPosted: Sat Feb 11, 2006 5:03 am  Reply with quote
Licensed


Joined: 23 Jan 2005
Posts: 300
Location: NE Minneapolis

n8murphy wrote:
hope to have something i can take to the salt flats.

Worlds Fastest Lambretta?
Back to top
View user's profile Send private message [ Hidden ]
n8murphy
PostPosted: Sat Feb 11, 2006 9:31 am  Reply with quote
Training


Joined: 01 Dec 2005
Posts: 28

i figure it will work better for this purpose thsn a vespa would. there is less to cut off
Back to top
View user's profile Send private message  
n8murphy
PostPosted: Sat Feb 11, 2006 9:33 am  Reply with quote
Training


Joined: 01 Dec 2005
Posts: 28

why you takin my words ya bastard
Back to top
View user's profile Send private message  
Matty
PostPosted: Sat Feb 11, 2006 11:39 am  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 1323
Location: MPLS

The flatest black Lambretta

_________________
-Matt
-++-you can't spell jackass with out JKSC-++-
Back to top
View user's profile Send private message   Visit poster's website
Brooke
PostPosted: Mon Feb 13, 2006 2:20 am  Reply with quote
Licensed


Joined: 06 May 2005
Posts: 215

email creepimpls /at/ hotmail d0t com

His name is carlin and he has an LI frame for sale, I think
Back to top
View user's profile Send private message  
Brad
PostPosted: Mon Feb 13, 2006 8:56 am  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 576
Location: St. Paul

What kind of speed are you looking for, 100 mph plus?

_________________
Brad
Back to top
View user's profile Send private message  
dmarquis
PostPosted: Mon Feb 13, 2006 10:55 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Probably as his ride goes about 80 or so as it is. :-)

Dave
Back to top
View user's profile Send private message   Visit poster's website
Brad
PostPosted: Tue Feb 14, 2006 1:58 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 576
Location: St. Paul

Any math majors here? So how rpms does a 10" wheel turn at 80 mph? : )

_________________
Brad
Back to top
View user's profile Send private message  
Matty
PostPosted: Tue Feb 14, 2006 2:20 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 1323
Location: MPLS

dmarquis wrote:
Probably as his ride goes about 80 or so as it is.


Postal Jeeps can go that fast???

_________________
-Matt
-++-you can't spell jackass with out JKSC-++-
Back to top
View user's profile Send private message   Visit poster's website
dmarquis
PostPosted: Tue Feb 14, 2006 10:28 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Don't know how many RPMS they are spinning at 80 MPH, but he did pretty much show up a guy on a crotch rocket thou on the hennipen bridge. I was doing about 50 or so and they way, way ahead........ Robert was there. Crazy stuff! Nate, must got a nitro setup in there... :-)

Dave
Back to top
View user's profile Send private message   Visit poster's website
nate
PostPosted: Wed Feb 15, 2006 12:09 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 587
Location: Best Saint Paul

3.14 * 10 = 31.4 " around

80 mph in inches per minute is 84400

84400/31.4 = 2690 rpm

I don't know what gearing he's running, so you'd have to deal with that before you could figure out engine RPM.
Back to top
View user's profile Send private message   Visit poster's website AIM Address
Brooke
PostPosted: Wed Feb 15, 2006 1:36 pm  Reply with quote
Licensed


Joined: 06 May 2005
Posts: 215

nate wrote:
3.14 * 10 = 31.4 " around

80 mph in inches per minute is 84400

84400/31.4 = 2690 rpm

I don't know what gearing he's running, so you'd have to deal with that before you could figure out engine RPM.


3.14 * 10? is it running on rims?

80 mph would be about 7.5K assuming stock gearing and no loss at the wheel. To hit 100 a bikes gott have about 35+ ponies (where one can probably hit 80 with about 15-16 hp). Low weight helps but cutting air is a bitch.
Back to top
View user's profile Send private message  
Tom Lindsay
PostPosted: Wed Feb 15, 2006 1:47 pm  Reply with quote
Licensed


Joined: 18 Jun 2005
Posts: 704
Location: Longfellow, Minneapolis

nate wrote:
3.14 * 10 = 31.4 " around

80 mph in inches per minute is 84400

84400/31.4 = 2690 rpm

I don't know what gearing he's running, so you'd have to deal with that before you could figure out engine RPM.


Ummm, no, your math's not quite right. The *wheel* has a 10" diameter, not the outside of the tire. I'm guessing the rolling surface is more like a 16" diameter and 16*3.14 ~= 50 and 84400/50 is a much saner 1688 rpm. The standard Stella's fourth gear has a 5.39:1 final ratio, which means 9100 RPMs for a standard Stella at 80MPH with a 21/68 primaries assuming my estimate of approx. 16" across the tire is correct. A fireball, with a 23/66 primary set would yield a 4.7 final drive in fourth (by my math), which means a still saner 7900 RPMs at 16" across the tire.

So 80MPH, while difficult for a 150, shouldn't be impossible. And since you're talking lammys, you get a few extra ccs to boot.

If anybody knows what the actual outside diameter of a 10" scooter tire is, please provide info!

_________________
Just say hello to dmarquis.
Back to top
View user's profile Send private message  
Display posts from previous:   
All times are GMT - 6 Hours

View next topic
View previous topic
Page 1 of 2
Goto page 1, 2  Next
minnescoota.com Forum Index  ~  Classifieds

Post new topic   Reply to topic


 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum




Powered by phpBB and NoseBleed v1.09