Fork Springs issue

[funone97]

have a 2007 gl1800 trike , have a dft trike kit on it, problem is if you hit a 1 inch pot hole the front end bottoms out. tried all types of springs. adv by passed , no help. has anybody had that problem. at whits end , it hits solid ,

 

[pwhoever]

have a 2007 gl1800 trike , have a dft trike kit on it, problem is if you hit a 1 inch pot hole the front end bottoms out. tried all types of springs. adv by passed , no help. has anybody had that problem. at whits end , it hits solid ,

The easiest solution is to just avoid the 1 inch potholes Sorry, kind of a smartazz response...

What would help is to elaborate more on which springs exactly you have tried. I know that with stock springs, they will eventually get permanently compressed and then not give a decent rebound.

Also what weight fork oil have you been using? That too has an effect on rude comfort.

Also I find that running the tires at the "recommended" pressure results in a bit of a rough ride. I usually run my front tire in the 36-38 psi range and rear tires in the 20-22psu range.

 

[funone97]

sorry forget tried stock springs, progressive, traxxion took off fork brace 15w oil, played with air pressure in tires afraid some thing is going to brake . hits hard. 1 inch extension on 4.6 trees . .

 

[funone97]

my weight is 182 lbs one up

 

[pwhoever]

sorry forget tried stock springs , progressive, traxxion took off fork brace 15w oil, played with air pressure in tires afraid some thing is going to brake . hits hard.1 inch extation on 4.6 trees . .

I wonder if it might be a problem with the forks and fork tubes themselves. If not installed and oriented correctly, they can get stuck and then won't move properly. Also if there is damage to one of the tubes and they get slightly bent or deformed, they won't be able to freely move up and down and you will get a harsh ride. The forks themselves may need to be looked at closer. Since you've tried all different combinations of springs and fork oil weights, that's what I would be looking at next.

 

[Papa Zook]

I know you said it was disabled, but it sounds like the anti-dive to me...

 

[pwhoever]

I know you said it was disabled but it sounds like the anti-dive to me...

This is a good point. How exactly did you bypass your ADV? In my case, I have always been using a specific shim purchased off eBay that separates the top and bottom half of the housing by maybe a 1/4".

 

[pwhoever]

And @Papa Zook might be onto something. It might not be an issue with the top part of ADV housing but might also be the plunger in bottom half being stuck down too. I found this old thread that covers not only the top half but bottom half as well. Starting with the linked post and continuing through the thread, it gives a lot of great info and 1 has link to Fred Harmon phase site which has multiple photos that help. Also one of the last posts gives an easy way to check the lower half.

Harsh ride, leaking seals & anti-dive

I apologize first for the length of this post, but wanted to make sure that all the info was there. I have an 06 GL1800, non-ABS, with a new Hannigan kit, 6 degree rake with a 2” riser. We bought the trike right after it had been kitted at 19,400 miles. Within 1,000 miles we noticed that the...

triketalk.com

 

[Papa Zook]

Good find Mike..

 

[funone97]

thanks all , when it gets a little warner out i will go in the garage and ckeck a little more '

 

[pwhoever]

thanks all , when it gets a little warner out i will go in the garage and ckeck a little more '

Sounds like a plan. Please do come back after you take another look and let us know what you find. It may be helpful to some else that comes along.