GSX1400 Owners .org

Technically Speaking => Suspension => Topic started by: mlivkovich on Sunday, 12 November 2017, 12:54 AM

Title: Homemade jack up kit
Post by: mlivkovich on Sunday, 12 November 2017, 12:54 AM
Always loved rear end higher on bikes but 150€ for jack up kit for my 14 is too much! Decided to make one!
Started with 20 mm thick steel...  Drilling  :jack:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Sunday, 12 November 2017, 12:59 AM
 :stir:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Sunday, 12 November 2017, 01:01 AM
 :stir:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Sunday, 12 November 2017, 01:08 AM
Finally!  :boogie:
Ended with cca 35 mm rear end lifted.
Satisfied with the look, can't wait to try it!
Title: Re: Homemade jack up kit
Post by: T 24 on Sunday, 12 November 2017, 02:11 AM
It is highly respected when someone makes things with his own hands, not just buying things.
Title: Re: Homemade jack up kit
Post by: owen426 on Sunday, 12 November 2017, 10:49 AM
As a metal worker by trade I must compliment you're creative use of the drill  :onya:
Title: Re: Homemade jack up kit
Post by: gsxbarmy on Sunday, 12 November 2017, 03:36 PM
Absolutely top job - be interested though to see if handling is affected as I see you have (effectively) moved the bottom mounting forward from standard.

Do check your chain slack though, in some instances a jack up kit can cause the chain to get a bit tighter than normal on full travel
Title: Re: Homemade jack up kit
Post by: Tony Nitrous on Sunday, 12 November 2017, 03:56 PM
Well done! I don't have the skill, patience or tools to do work like that.
You made a real good Job there.

Yours is a little further forward where mine is further back and up.
Both will give a similar lift but there may be a fraction difference in leverage
due to the shock angle.

Mine is a little less stable at licence losing speeds, but a damper will fix that.
I love the extra cornering clearance and the different feel from the front end.
I was a bit fussy about mine and spent time untill I got the suspension right.
Seat initially felt odd but I got used to it before I got around to changing it.
(I also went from 190/55 and 200/50 tyres back to a 190/50 now its lifted)

If I ever get another 14 it will certainly be on my to-do list.
A 14 needs a full system, PC111, PAIR's and a jack up to suit me.

(https://gsx1400owners.org/forum/proxy.php?request=http%3A%2F%2Fi68.tinypic.com%2F2i71rmr.jpg&hash=a745c2eb576a3bb841ad2fc1ba043cc774aec027)

Title: Re: Homemade jack up kit
Post by: mlivkovich on Sunday, 12 November 2017, 10:49 PM
"Yours is a little further forward where mine is further back and up.
Both will give a similar lift but there may be a fraction difference in leverage
due to the shock angle."


Tried to copy this type of jack up kit, so I think there will be no problem. Standard shock angle is 60° angle, mine is now at about 52°angle.  I moved bottom shock mount  48 mm forward and 5 mm up, that gave me cca 35 mm lift at rear wheel axle. Putting bolt in secong hole (60 mm) causes raer end lift for 50 mm.
Title: Re: Homemade jack up kit
Post by: mlivkovich on Sunday, 12 November 2017, 11:16 PM
I said I love the look of lifted rear end, but the main reason I made this mod is to have enough clearance for pegs. My plan is to make rearset plates that will allow move them about 4 cm down and 5 cm back. I know it seems too much but I am tall guy (202 cm) and I need more legroom! Still have to figure how to do it with standard exhaust. Noticed that only akrapovic pipes give enough clearance for pegs to move that much down but my budget is low...
Will figure out something.... :stir:
I already modified seat to be 3 cm higher but still not enough.  Reaching floor was never the issue...
Title: Re: Homemade jack up kit
Post by: Tony Nitrous on Monday, 13 November 2017, 04:23 AM
I wouldn't expect any issues at all with using either design,
Its only a very small effect of the leverage applied to the shock.

This group has a love / hate relationship with raising the rear.
I look forward to your road test.
Title: Re: Homemade jack up kit
Post by: Kiwifruit on Monday, 13 November 2017, 06:44 AM
Love the poor mans laser cutter.
Top job.  :clapping:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Monday, 13 November 2017, 07:49 AM
Quote from: Kiwifruit on Monday, 13 November  2017, 06:44 AM
Love the poor mans laser cutter.
Top job.  :clapping:

Thanx! My CNC laser cutter broke  :happy1: :whistling: :imrgreen: :coffeescreen:
Title: Re: Homemade jack up kit
Post by: gsxbarmy on Monday, 13 November 2017, 07:58 AM
Quote from: mlivkovich on Sunday, 12 November  2017, 11:16 PM
My plan is to make rearset plates that will allow move them about 4 cm down and 5 cm back. I know it seems too much but I am tall guy (202 cm) and I need more legroom! Still have to figure how to do it with standard exhaust. Noticed that only akrapovic pipes give enough clearance for pegs to move that much down but my budget is low...
Will figure out something.... :stir:
I already modified seat to be 3 cm higher but still not enough.  Reaching floor was never the issue...

You may want to think about footrest riser plates similar to these http://www.justbandits.com/footrest-riser-plates.html

A man of your skills I'm sure can make them to suit  :onya:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Monday, 13 November 2017, 08:51 AM
Quote from: gsxbarmy on Monday, 13 November  2017, 07:58 AM
Quote from: mlivkovich on Sunday, 12 November  2017, 11:16 PM
My plan is to make rearset plates that will allow move them about 4 cm down and 5 cm back. I know it seems too much but I am tall guy (202 cm) and I need more legroom! Still have to figure how to do it with standard exhaust. Noticed that only akrapovic pipes give enough clearance for pegs to move that much down but my budget is low...
Will figure out something.... :stir:
I already modified seat to be 3 cm higher but still not enough.  Reaching floor was never the issue...

You may want to think about footrest riser plates similar to these http://www.justbandits.com/footrest-riser-plates.html

A man of your skills I'm sure can make them to suit  :onya:

Making these plates will be peace of cake...BUT I have to figure out how lower standard exhaust to get room for footrests go down. There is only 1 to 1.5 cm clearance under pegs. Moving them back is easy. Thank you for advice anyway! :cheers:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Wednesday, 15 November 2017, 01:24 AM
Came back from a short ride. Bike turns quicker  :smitten:
Didn't ride too fast and stability is as it was. I hope it will not change at licence losing speed. Happy with project!  :imrgreen:
Title: Re: Homemade jack up kit
Post by: mlivkovich on Friday, 24 November 2017, 02:12 AM
The purpose of installing jack up kit was to make room for pegs go down for more legroom, so rearsets plates made. More legroom! Not as much as I wanted but better than nothing.