Lotusmark2
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| posted on 7/12/05 at 04:17 PM |
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Cornering
How do you overcome the cornering issues with 3 wheelers (2 front 1 rear) as I am toying with an idea (Formula ford conversion)
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Surrey Dave
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| posted on 7/12/05 at 04:56 PM |
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Great idea , I have a soft spot for 3 wheelers, my 1st car at 16 was an BMW Isetta .
I would guess keeping the C of G low helps a lot , and wide track at the front, I imagine 2 at the front 1 at the rear is the most stable
configuration.
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donut
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| posted on 7/12/05 at 05:14 PM |
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As cheeko says, wide track at front and i would suggest a wide tyre at the rear. Should be fun!
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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Lotusmark2
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| posted on 7/12/05 at 05:24 PM |
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the whole idea of no diff to suck power and a much lighter setup at the rear really appeals.....
the research continues, if anyone can point me at good info please feel free.
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donut
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| posted on 7/12/05 at 05:28 PM |
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Those JZR (or whatever) V-twin bike powered trikes are pretty quick, plus theres the other trike that uses superbike engines and the Avon which now
uses VW beetle power.
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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Ben Smith
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| posted on 7/12/05 at 05:46 PM |
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Do a search for a car called the Malone Skunk. They seem to have it pretty well sorted. They use a wide car tyre on the back and motorbike tyres on
the front. Got very good reviews when it was launched and believe it is still about.
Ben.
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andres
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| posted on 7/12/05 at 06:12 PM |
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how about the Grinnall scorpion 3, the one on http://www.rbracing-rsr.com/grinnall.html is 350 kg and 300 bhp
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Micke Fredriksson
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| posted on 11/12/05 at 09:45 AM |
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The cornering issues with a 3-wheeler with 2 front ,1 rear wheel is really simpel.
You need very low CG (center of gravity), wide front track- And the most important: As much weight in the front as possible!!
The balance (over/under steer) is decided of the weight distribution (front/rear).
Front heavy: Understeering (but you can easy power oversteer  ) = easy to control!!
Rear heavy: Oversteering everywhere - Not good!!
Take a look at my website. There is very much interresing to read!
MRIDE.SE
[Edited on 11/12/05 by Micke Fredriksson]
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joolsmi16
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| posted on 20/12/05 at 01:06 AM |
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cornering
Hi Micke is well founding in his comments in that he has buillt a trike/tri-car and its performance is visable on his web page.
A trike/tricar will always trip or roll over but as Micke as stated keeping the C of G lower and a large % of weight over the front wheels with as
little upspring mass as possble will limit the possibility of roll or lift.
But again its all a compromise with performance a tricar weighing 350kg with 160bhp and geared correctly will definetly match the high end track cars
begin 0-100 mph sub 5 sec and with my software 0-100 in 4 secs is possible but no doubt a tricar would not be able to match the cornering capabilites
as the same as a bike can, but a tricar can accelerate and brake much effectively than a bike.
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akumabito
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| posted on 20/12/05 at 01:19 AM |
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I wonder how the tilt-steering of the Aprillia Magnet works? That could be interesting as well 
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iank
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| posted on 20/12/05 at 02:09 AM |
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There is some discussion of 3 wheeler handling here:
http://www.rqriley.com/3-wheel.htm
The guy claims that correctly designed a 3 wheeler can corner better than a 4 wheeler due to a superior yaw response rate. No idea if it's
true/practical/complete bobbins, but interesting stuff. There is also some discussion of how leaning designs handle.
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russbost
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| posted on 21/12/05 at 11:56 PM |
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3 wheelers can be made to handle very well indeed. A low CofG helps but the essential thing is that there is no high weight over the single wheel -
hence why Reliants fall over. I drove a 1100 Mini engined 3 wheeler years ago which would have knocked spots off many modern "performance
" cars for both handling & speed - the big problem with high power outputs & only 1 wheel driving is the lack of traction.
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