Triumph Rat Motorcycle Forums banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Bike of the Month Challenge!

1 - 6 of 6 Posts

·
Registered
Joined
·
69 Posts
Discussion Starter · #1 ·
Just wondering if anyone out there with an 05-current Sprint has had problems with leaking fork seals. I took a trip this past week back to NEA to see my family and hit an expansion joint at 70mphx2, felt the front end 'whack' but paid no attention cause it always does that, especially over square edge bumps. Now I have a leaking left fork seal. Thing is, I have 9500miles on it and use it as everyday transport. I wish I could hold out till the 12,000mile service and just have Race-Tech springs and valving put in.

The suspension has been the weak link in the chain for me and my Sprint. At 6ft and 240lbs, the stock springs and shock are way too soft.

I have been reading up on the suspension threads...and am wondering if the new springs and valving will firm up the ride enough for me weight and speeds I ride. Plus, I do about 50% of my riding in and around Little Rock and the city streets are not the best...lots of rippled, heaved, and potholed pavement.
 

·
Registered
Joined
·
124 Posts
I'm the same weight as you my friend, and I came to the same conclusions very early in the relationship with the ST. It's not just the springs that are screwy though, the stock damping is way off unlsess you are the Crash Test Dummy that Triumph valved the boingers for.

Have no fear though... the stiffer springs and appropriate damping mods will improve everything to do with the handling. You'll notice that the stiffer suspension is actually much plusher on the smaller ripples and things because it's working at the start of the stroke rather than being 9/10ths compressed before you even hit your first bump.

It's THE best money (apart from tyres) that you'll spend on your bike - if it needs doing and the fork seal is leaking then make what arrangements you need to make. Chances are the 12k service and the suspension work will be done at different places anyway (you DO want a specialist to do the job don't you??).

Cheers & Beers,
Muz
 

·
Registered
Joined
·
69 Posts
Discussion Starter · #3 ·
Yes, I am looking to make the forks (and rear shock) more complient. I had an opportunity to ride a new CBR1000 and that bike made my Sprint feel like riding a wagon with wooden wheels on a cobblestone road...I developed serious suspension envy after that ride. Infact, that was what blew me away about the CBR, not the power.

I am not sure what to do about the suspension. I do not think there are any dedicated suspension shops near Little Rock. There are some guys in town that have modified their Sprints with USD forks and such and I may have to get in touch with them and find out where they had their work done.

I myself do not want to go down the USD route. I would be happy just to get the stock forks tuned and updated.

You know, I often wonder what types of riders these companies use to test their bikes. The Sprint is a sport-touring machine that is quite fast and actually handles great despite the stock suspension, but did they test these bikes with 140lb riders?
 

·
Registered
Joined
·
3,152 Posts
Supposedly the 95th percentile body form the bike OEMs build for is 5'10", and 180 lbs.

At 240, you are WAY over the design. The shock spring is pitifully weak (750lb/in) and the front... well, enough has been said about that.

Your best bet is to send the forks to either Race-Tech or Traxxion, and buy a Penske or Hagon shock that is set up for your weight requirements (you, plus gear, plus bags, maybe a passenger).

HTH!
 

·
Registered
Joined
·
196 Posts
Something to keep your eye on if you have a leaky seal- mine leaked oil all the way down the leg to the caliper, onto the :eek: pads and rotor
 

·
Registered
Joined
·
764 Posts
Spring Rates

Deltablues

You should be looking at 1.1 kg/mm for your fork springs and probably a 1000lb/in spring for the rear shock. This will stiffen up your machine considerably to cope with your weight.
 
1 - 6 of 6 Posts
Top