Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: Making a Reverse-Trike Tilt...
scootz

posted on 4/3/12 at 09:51 PM Reply With Quote
Making a Reverse-Trike Tilt...

Yes, I know I should be learning to walk before running, but...

My trike wheelbase is long at around 2.8m, making for a track-width of around 1.75m using the 1:6 formula.

Looks a little awkward (IMHO)...




I've seen a number of production scooters (Piaggio etc) with tilting twin-wheels up front and it struck me that a tilting system would help negate the need for such a wide track.

I understand the general parallelogram 'concept' behind the tilting systems, but could one be designed where the steering input completely controlled the lean angle (and you wouldn't need King Kong arms to turn the thing in!).









It's Evolution Baby!

View User's Profile View All Posts By User U2U Member
designer

posted on 4/3/12 at 10:02 PM Reply With Quote
I don't think that the 'standard' wheelbase/track formula applies to reverse trikes.
View User's Profile E-Mail User Visit User's Homepage View All Posts By User U2U Member
maccmike

posted on 4/3/12 at 10:52 PM Reply With Quote
my trike was made wider due to instability. maybe mount the hubs not as far apart and if you feel you need more width afterwards, wheels spacers and wider wheels..
View User's Profile View All Posts By User U2U Member
plentywahalla

posted on 4/3/12 at 10:55 PM Reply With Quote
On a bike the steering input and lean are not related, sometimes they are opposite.

What would happen when the back end breaks away, you could not opposite lock without unbalancing the whole thing.





Rules are for the guidance of wise men ... and the obedience of fools. (anon)

View User's Profile View All Posts By User U2U Member
matt_gsxr

posted on 4/3/12 at 10:58 PM Reply With Quote


Proportions of T-rex look nice (to me, but I do know nothing about trikes). But it is almost square (2.28m front to back, 1.98m wide)

Any chance of moving your front wheels back?

View User's Profile Visit User's Homepage View All Posts By User U2U Member
plentywahalla

posted on 4/3/12 at 11:03 PM Reply With Quote
If you want to keep to the wheelbase to track ratio, could you not move the front axle back taking the chassis frame over and under the front part of the tub.





Rules are for the guidance of wise men ... and the obedience of fools. (anon)

View User's Profile View All Posts By User U2U Member
scootz

posted on 5/3/12 at 08:28 AM Reply With Quote
quote:
Originally posted by plentywahalla
What would happen when the back end breaks away, you could not opposite lock without unbalancing the whole thing.


This guy has plenty of opposite lock






But yes, I understand what you're saying. Sliding principles in the dirt are very different than on tarmac.





It's Evolution Baby!

View User's Profile View All Posts By User U2U Member
scootz

posted on 5/3/12 at 08:37 AM Reply With Quote
quote:
Originally posted by matt_gsxr
Proportions of T-rex look nice (to me, but I do know nothing about trikes). But it is almost square (2.28m front to back, 1.98m wide)


That's the problem with having it as a single-seater... it's going to be long and narrow.





It's Evolution Baby!

View User's Profile View All Posts By User U2U Member
tony-devon

posted on 5/3/12 at 08:47 AM Reply With Quote
not such an issue for 2 up front trikes, but be aware of different MSVA lighting rules for trikes wider than 1700mm, thats overall width.





heavy is good, heavy is reliable, and if it breaks, hit them with it

View User's Profile E-Mail User Visit User's Homepage View All Posts By User U2U Member
scootz

posted on 5/3/12 at 08:56 AM Reply With Quote
quote:
Originally posted by tony-devon
not such an issue for 2 up front trikes, but be aware of different MSVA lighting rules for trikes wider than 1700mm, thats overall width.


Cheers Tony... it was something I'd already picked up on.





It's Evolution Baby!

View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply


go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.