Go Back   EcoModder Forum > EcoModding > Motorcycles / Scooters
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-29-2011, 07:58 AM   #31 (permalink)
Coasting Down the Peak
 
skyl4rk's Avatar
 
Join Date: Jun 2008
Location: M I C H I G A N
Posts: 514

Toyauto Pickup - '94 Toyota Pickup 2WD
90 day: 36.32 mpg (US)

Versa Base - '09 Versa Sedan 1.6 Base
Team Nissan
90 day: 41.69 mpg (US)
Thanks: 27
Thanked 41 Times in 34 Posts
Quote:
Originally Posted by Christ View Post
Anyone have any comments on the possible use of a belt-driven set of cvt pulleys instead of a transmission?
A chain/sprocket or chain/gear system will have less power losses than a belt/pulley system, especially a cvt belt/pulley system.

__________________
Nissan Versa Aeromods
  Reply With Quote
The Following User Says Thank You to skyl4rk For This Useful Post:
Christ (03-29-2011)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-29-2011, 11:23 AM   #32 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
I think to speed things up (lol) while I'm debating on eventualities of a driveline, I just might chain it direct drive with a centrifugal clutch (go-kart) and gear it to a good max speed Of ~50 mph, at around 2800-3000 rpm.

Later on, I'll figure something out from the available transmissions I have, or just see about a2 speed or 3 speed gearbox. All in how I feel as the project progresses.

First steps are just to get it rolling, anyway. (pun)
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 03-29-2011, 11:29 AM   #33 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
On the high side of centrifugal clutches, it's REALLY simple to adjust engagement RPM. Since the recommended idle speed for the motor is ~1200 RPM free, andit's torque line (lol) starts at 1500 RPM loaded, I'll adjust the clutch to engage at 1350, approx, which should be a flick of the throttle, really.

And driving less than 500 lbs total, it should be fully engaged almost immediately, as long a the gearing isn't too high on the direct drive.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 03-29-2011, 11:51 AM   #34 (permalink)
dcb
needs more cowbell
 
dcb's Avatar
 
Join Date: Feb 2008
Location: ÿ
Posts: 5,038

pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
Thanks: 158
Thanked 267 Times in 210 Posts
you don't really want a centrifugal clutch. You want something you can bumpstart and coast in neutral I think.
__________________
WINDMILLS DO NOT WORK THAT WAY!!!
  Reply With Quote
The Following User Says Thank You to dcb For This Useful Post:
Christ (03-29-2011)
Old 03-29-2011, 12:14 PM   #35 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
Eventually, maybe, but for the sake of getting things started (lol), I can handle using neutral throttle and sac'ing the FE boost of coasting. I really don't have too many opportunities to safely coast, either, as I've found in my car.

The master cylinder bleeds pressure except at the very bottom of the pedal, so I just learned to drive with almost no use of the brake pedal at all until I can get it fixed. I find that, since I am seldom anywhere that coasting would be of much benefit, either because of having to speed up later, or slow down with the brakes, I can just pick when to bleed off speed by letting the engine pull the car down, even so that I can decelerate from 50mph to 15mph for a certain bridge I need to cross on my commute.

Realistically, if I can direct drive it and get even 80 mpg, its still almost double the mileage in the Golf, and I can figure outthe technical stuff while I'm saving.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 04-03-2011, 08:52 PM   #36 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
I got the engine the other day. Put it right in storage for the moment, while I work on getting the CM185T chassis over here to start moving up the engine brace and remove the muffler and attached fuel tank from the engine. I'm going to try to mount it as far forward as possible, since the twinstar its such a small chassis, to leave room for the transmission eventually.

Once I get the chassis here, I'll get a pix of everything I've gotten so far and start updating.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 04-04-2011, 03:17 AM   #37 (permalink)
EcoModding Lurker
 
Join Date: May 2009
Location: Gresham, Or
Posts: 23
Thanks: 2
Thanked 2 Times in 2 Posts
Cost of engine?

Quote:
Originally Posted by Christ View Post
I got the engine the other day. Put it right in storage for the moment, while I work on getting the CM185T chassis over here to start moving up the engine brace and remove the muffler and attached fuel tank from the engine. I'm going to try to mount it as far forward as possible, since the twinstar its such a small chassis, to leave room for the transmission eventually.

Once I get the chassis here, I'll get a pix of everything I've gotten so far and start updating.
So Christ,
Mind me asking how much you paid for your engine including shipping and where you got it? I've been dreaming about a light diesel-powered 3-wheeler for a long time but priorities keep getting in the way
Will, the tinkerer
  Reply With Quote
Old 04-04-2011, 09:31 AM   #38 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
$600 for the motor, shipped. Ebay, my friend. Its a launtop, yanmar clone.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 04-08-2011, 03:43 PM   #39 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
Found a pretty cheap supply of CVT transmissions from X-2 2 stroke pocket bikes. I'm probably gonna get one for the time being, and if it holds up, it might stay.

Those bikes have up to 125cc engines on them...it might hold.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 04-08-2011, 04:34 PM   #40 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 913

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 59
Thanked 166 Times in 104 Posts
Those torque converters from x2 are likely to be for engines that turn upward of 10,000 rpm and have minimal torque.
Check this out
A BSA transmission.

There are a lot of motorcycle transmissions on ebay.
Look for BSA, Norton, matchless, triumph, enfield, AJS
They shift on right side and need a clutch which mounts external to the chain drive. Top gear is always 1:1

__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand

Last edited by Varn; 04-08-2011 at 04:46 PM..
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com