ADVrider - Leading Link Designs

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Leading Link Designs - Post Pics

Well this should create some responses . . . .

I am in the process of designing a set of Leading Links for a R series frame.
I have so many pics which I have collected for inspiration.

Lots of Different solutions to the problems that can arise.
Attachment 150636
I like this design from an offroad DRZ400 from South Australia.

Things to consider is what type of tube to use.
Seamless Steam Pipe or Crome Moly?
Then tube dimensions and wall thickness.
The leading swingarm can be either straight or bent as above?

I will keep posting images and if you have any please post and details and thoughts.

Cant forget HogWilds front end
Attachment 150646

Pezz wrote:
Things to consider is what type of tube to use.
Seamless Steam Pipe or Crome Moly?
Then tube dimensions and wall thickness.

Reply:
Heavy wall moly

Pezz wrote:
The leading swingarm can be either straight or bent as above?

Reply:
Bent swingarm allows use of a longer shock while maintaining the relationship between axle height and swingarm pivot point to be what you want.

Other things to consider:
Do you want floating calipers or not?
How much trail do you desire?
Do you want the trail to be adjustable?
What to use for pivot bearings?
Which method to mount shocks on fork tubes?
At what point on swingarm to provide pivot?

What is that top bike up there, please?

OT, but how do thises sub-titled sobriquets appear under our names?
I never thought of myself as the adventerous type. Gnarly perhaps ~

And Mr Pez can't ride?

Just curious

Quote:

Originally Posted by Uncle Ernie

What is that top bike up there, please?

Ernie

Its from a DRZ400 outfit in South Australia
Attachment 150716

Quote:

Originally Posted by claude

Pezz wrote:

Reply:
Heavy wall moly
Looking at the Racetech Catalogue 38.1mm X 6.35mm (1 1/2" x .250") Racetech 650. Should be sufficient.

Other things to consider:
Do you want floating calipers or not?
Floating - My plan is to run Monobloc R1 Callipers. 2 on the 1 disc
How much trail do you desire?
40mm +/- 2mm
Do you want the trail to be adjustable?
Hadnt really thought about adjustable Trail? Do you have any Pics?
What to use for pivot bearings?
Havent decided as yet? Suggestions??
Which method to mount shocks on fork tubes?
Welded Brackets, with the weld on the outside of the tube, even If I have to make a larger top mount to accomodate.
Picture below from Tony Foale's 'Motorcycle Handling and Chassis Design'
Attachment 150718
At what point on swingarm to provide pivot? This is interesting question. and this is where I would like to hear any advice. I have seen many different variations. Anywhere from behind the tyre to close to the axel. With shock mounted in as many various locations in between, I have seen one that was in front of the axle and a linkiage type that was behind the swingarm pivot.

Also to be considered is how much travel is required, and can that be adjustable. We have some great roads in the outback and I want to travel them as well. This will dictate what shocks to use and where to locate the bottom mount