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Author: Subject: Sprint Trike
richstorm

posted on 2/2/14 at 01:00 PM Reply With Quote
Sprint Trike

Hi all

I am new to the forum. First a bit about myself. I live in Warwickshire and have done a lot of building and restoration work over the years. I presently have a Triumph Spitfire, Fiat X1/9 and a 1100 Yamaha trike. I have just got another Yamaha 1100 and would like to build a sprint/hill climb trike.




This is the sort of thing I have in mind. I would also like to make it in a way that it can be made road legal. Anyone out there know of anything similar or got experience with racing sidecars. Also any other thoughts or comments.

Regards

Rich

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minitici

posted on 2/2/14 at 02:23 PM Reply With Quote
Don't think MSA events permit 3 wheeled vehicles - possible exception for period defined vehicles.

I have seen 3 wheeled Morgans at 'Historic' hillclimbs.
They may be permitted to run at events where there is an ACU permit.

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deeceee09

posted on 2/2/14 at 03:00 PM Reply With Quote
Ask your questions here, I'm sure someone will help.

http://www.uphillracers.com/forum.php

or here

http://www.hillclimbandsprint.co.uk/forum/default.asp





Treachery and old age will always triumph over youthful enthusiasm.

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Minicooper

posted on 2/2/14 at 03:47 PM Reply With Quote
quote:
Originally posted by minitici
Don't think MSA events permit 3 wheeled vehicles - possible exception for period defined vehicles.

I have seen 3 wheeled Morgans at 'Historic' hillclimbs.
They may be permitted to run at events where there is an ACU permit.


I seen these types of trikes at Gurston Down Hillclimb

David

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JimSpencer

posted on 5/2/14 at 03:29 PM Reply With Quote
Hi

Yup we see the bikes at Hillclimbs a few times a year, the classes for them (inc Trikes) are run by the National Hill Climb Association - www.nhca.co.uk, make for good meetings IMHO as the mix of cars and bikes makes a very nice change.

Good luck with the project

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drt

posted on 5/2/14 at 09:16 PM Reply With Quote
Are you looking for a more common outfit (Monkey next to you, 2wheels inline)?
Or something out of the box ?
like;

http://www.rjegraphics.com/ENG_MOD_no_graphics/Projects/IMAG012A.JPG

http://thumbsnap.com/s/8hivufM7.jpg

(see thread)
http://www.locostbuilders.co.uk/viewthread.php?tid=18690






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motorcycle_mayhem

posted on 5/2/14 at 09:49 PM Reply With Quote
The picture of the trike you posted looks interesting.

Definitely quite a bit of a Jedi rear end in there (uprights, trailing links, etc., etc.). I wouldn't be suprised to see the whole rear end of the chassis in there as well if you had a side view of the beast.

Nice lightweight way of doing it, simple too.

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Jimmy-boy

posted on 6/2/14 at 09:00 PM Reply With Quote
nice!!
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richstorm

posted on 6/2/14 at 09:29 PM Reply With Quote
Hi all

Thanks for your comments.




This is a photo showing the front end steering on the trike above. Does anyone have any knowledge, ideas or sugestions on this setup.

Rich

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drt

posted on 7/2/14 at 12:19 PM Reply With Quote
The Cog of this machine looks like it is very far from the 'wide' axle.
In sidecars (or any 3wheeled) vehicle the goal is to get the mass as close as possible
to the widest axle.
Look at F1 outfits, moste people argue that a reverse trike is the best option.
I agree, as you have maximum stability and most grip is towards the steered axle.






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scootz

posted on 7/2/14 at 01:31 PM Reply With Quote
quote:
Originally posted by drt
The Cog of this machine looks like it is very far from the 'wide' axle.


Not really.

The front only has one wheel, one tyre, one upright, and minimal suspension / framework.
Immediately behind that is 60-ish kg of engine.
Immediately in front of the rear axle is 80-ish kg of rider and the exhaust primaries.
On top of the rear axle is the bulk of the framework, a differential, 2 driveshafts, 2-wheels, 2 uprights, 2 tyres, exghaust silencer and a fuel tank.
Then behind the rear axle is another 80-ish kg of wing-man!

I'd say the weight is very much rear-biased.

As for the debate of front or rear wheel drive on a reverse-trike? I can't really say. Min you, I've only ever seen a front wheel drive reverse trike in hillclimb action and it was VERY quick.





It's Evolution Baby!

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richstorm

posted on 7/2/14 at 03:21 PM Reply With Quote
Hi all


How about





or





at least the 2 wheels are at the back. I must admit this one makes me smile.





My present trike






regards

Rich

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