Register    Login    Forum    Search    FAQ

Board index » Hornet 600/599 » Mechanical & Electrical




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post Posted: Wed May 09, 2018 1:36 pm 
Offline
Hornet Warrior
User avatar

Joined: Sun Sep 04, 2016 11:28 am
Posts: 108
Hi guys,

I have one interesting thing to solve. It’s about Hornet 600 ’99. This season I’ve noticed that when I am riding straight the handlebar is turned to the right a bit. I cannot say the numbers but it just feels like my left hand is further from me than my right hand and the top yoke’s water guide under the stem nut (the little groove) also doesn’t go straight with the frame (twisted clockwise by 5 degrees or something).
The most interesting thing, is that when I take my hands of the bar, the bike goes perfectly straight.
I’ve done steering stem bearings replacement, forks complete overhaul, front and rear wheel bearings replacement, chain and sprockets replacement this winter and noticed this only on this season. I am not sure if this only happened recently or am I just starting to notice the things that I had no time for last season because I was only keen to drive it. The rear wheel seems to be aligned good according to the factory grooves and my approximate measurements from the axle to the swing arm bolt. I will be spending some time in the garage this evening and I want to ask you what should I be looking for to solve this. What could be the reason behind this?

Thanks in advance for any kind of your input. :)

_________________
Honda Hornet CB600F 1999


Top 
 Profile  
 
 Post Posted: Wed May 09, 2018 4:57 pm 
Offline
Darwin Award winner 2016
User avatar

Joined: Tue Jan 28, 2014 8:26 pm
Posts: 1063
Have you measured both your arms... what makes you think the bike is at fault?!

Seriously though, it sounds as though the triple trees are slightly twisted. You' may have reassembled it that way or they've received a knock. The triples can be knocked out of alignment if you drop the bike or hit a pot hole or two.

Resolved by loosening the relevant bolts... steering head nut, lower triple tree nuts (leave the top tree pinch bolts done up) the axle main nut and four pinch bolts then bounce the front end (easily done if you sit on the bike and roll it forwards using the brakes hard to pump the forks.

Here watch or 8o

The bike would still track straight though it would slightly 'crab' and like guy explains... the bike would turn easier one way than the other.

_________________
60th cog in the Gear Driven Cam Appreciation Society.


Top 
 Profile  
 
 Post Posted: Thu May 10, 2018 8:57 am 
Offline
Needs to get out more!
User avatar

Joined: Mon Jul 13, 2015 8:08 am
Posts: 1437
Location: In The Garage
Great info Biggabit - will help me when reassembling my front end :clap


Top 
 Profile  
 
 Post Posted: Wed Jul 11, 2018 10:51 am 
Offline
Hornet Warrior
User avatar

Joined: Sun Sep 04, 2016 11:28 am
Posts: 108
Ok, guys. So after using your tips and redoing the front end alignment it still feels like I have to compensate the bike by keeping the steering bar a bit to the right. Like 2-3 degrees. Can you guide me to the next steps in finding the problem? Back wheel is aligned straight (measuring from pivot bolts to axle bolt). It is now not only the handlebars that don't feel straight forward. It's like the bike wanta to go right and i have to compensate by countersteering to the same right. Any ideas?

_________________
Honda Hornet CB600F 1999


Top 
 Profile  
 
 Post Posted: Thu Jul 12, 2018 10:36 am 
Offline
Needs to get out more!
User avatar

Joined: Mon Jul 13, 2015 8:08 am
Posts: 1437
Location: In The Garage
Yeah this is perplexing - I'm not going to ask you a lot of basic questions because I know that you will have already considered them but I'm going to anyway because I can't think of anything else . . . :(

All nuts and bolts tightened properly around swingarm, yokes etc and engine stud spacers in place?
Frame bent (probably not)
Wheels out of alignment (you checked this so no)
Swingarm bent (probably not)
Steering stem bent (probably not)
Fork tube bent (probably not)
fork oil level uneven (possibly?)


Top 
 Profile  
 
 Post Posted: Thu Jul 12, 2018 10:43 am 
Offline
Needs to get out more!
User avatar

Joined: Mon Jul 13, 2015 8:08 am
Posts: 1437
Location: In The Garage
p.s. I'm making final adjustments to the alignment of my forks/steering stem etc today after putting the bike back together yesterday - if anything useful occurs to me while I'm doing it I'll get back to you :D


Top 
 Profile  
 
 Post Posted: Thu Jul 12, 2018 12:38 pm 
Offline
Hornet Warrior

Joined: Mon Sep 12, 2016 4:26 pm
Posts: 103
Just a thought....

I had noticed this on my Hornet as well, and thought that it might be a fork alignment issue, but I think it's the same on my new Guzzi V7.

This isn't due to the fact that we ride on the left hand side of the road and there is the road camber to contend with...?

Might just require a couple of degrees shift in the steering to compensate?

Jim


Top 
 Profile  
 
 Post Posted: Thu Jul 12, 2018 2:26 pm 
Offline
Hornet Warrior
User avatar

Joined: Sun Sep 04, 2016 11:28 am
Posts: 108
Hoon,

Answering all the questions of yours.

All nuts and bolts tightened properly around swingarm, yokes etc and engine stud spacers in place? - Yes, spacers are in place and all nuts and bolt are tightened with a torque wrench as manual suggests.
Frame bent (probably not) - no visual bends under the tank or anywhere else what can be seen withiut taking the engine out. Can not clearly inspect the area where swing arm connects to the engine. I doubt the bend will be there though - there are two connections with the engine - the engine block would have snapped together with the bending i guess.
Wheels out of alignment (you checked this so no) - rear wheel is aligned to swing arm bolts, i didnt check the wheel to wheel alignment. Rope method you suggest?
Swingarm bent (probably not) - no visual bends.
Steering stem bent (probably not) - didn't notice anything unusual when reassembling with new bearings. The forks come into holes without any effort.
Fork tube bent (probably not) - looked straight (eye sight), when reassembling them.
fork oil level uneven (possibly?) - filled in as required and meassured the level which is within 1mm tollerance between each fork.

Jim,

Thats a good thought. However, i ride on a right hand side of the road. :)

I am realy out of ides. I would say the last resort would be to take everything apart and get the frame checked at specialists...

_________________
Honda Hornet CB600F 1999


Top 
 Profile  
 
 Post Posted: Thu Jul 12, 2018 5:42 pm 
Offline
Darwin Award winner 2016
User avatar

Joined: Tue Jan 28, 2014 8:26 pm
Posts: 1063
When the rear wheel to swinging arm alignment is set...

For absolute accuracy you need to check the 'front to rear alignment' with the string method or better still two straight edges. (Two pieces or wood.) Forks twisted in the triple clamps will throw out the reading by placing the fronts foot print to the right or left slightly.


You should also check for vertical alignment.

With the rear wheel set to vertical check that the front is also vertical.. other wise something is bent. frame/swing-arm/triples/forks ect. Use a paddock or Abba stand and a 'plumb line' or other devise.

Other checks.

Bent handle bars.
Bent triple trees.
Worn fork internals (slop)
Worn swinging arm bearings.
Bent axle/s
Worn wheel bearings.

_________________
60th cog in the Gear Driven Cam Appreciation Society.


Top 
 Profile  
 
Display posts from previous:  Sort by  
 
Post new topic Reply to topic  [ 9 posts ] 

Board index » Hornet 600/599 » Mechanical & Electrical


Who is online

Users browsing this forum: No registered users and 2 guests

 
 

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: