Author Topic: Cost Effective Suspension Mod's  (Read 1527 times)

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#10

Offline dave_a

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Re: Cost Effective Suspension Mod's
Reply #10 on: 03 June, 2021, 12:58:09 AM
What did he do to your forks, Tom?
CD doesn't have a clicky for Tigers, just the twins. But I can guess the cost for a custom Ohlins.
Strangely, I had fewer issues with the rear, but no doubt they interact. I can imagine a guy your size could overwhelm both ends of the bike.

#11

Offline dave_a

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Re: Cost Effective Suspension Mod's
Reply #11 on: 10 June, 2021, 01:08:58 AM
Can anyone else report what rate springs they put in their 1050's & talk about the results?
Racetech suggests 1.2kg for a lowered tiger (lowered 35mm in the rear) stock OE rate is .6kg. Seems a pretty dramatic change.
That's why I'm asking...

#12

Offline TimboLeMatelot

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Re: Cost Effective Suspension Mod's
Reply #12 on: 10 June, 2021, 09:15:07 AM
*Originally Posted by dave_a [+]
Can anyone else report what rate springs they put in their 1050's & talk about the results?
Racetech suggests 1.2kg for a lowered tiger (lowered 35mm in the rear) stock OE rate is .6kg. Seems a pretty dramatic change.
That's why I'm asking...

Only my opinion but whether lowered or not the spring rate should not change. If you have lowered the rear, you would need to make a corresponding adjustment of the forks in the yokes and the weight distribution will then be restored to near design state.




#13

Offline Paul2bikes

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Re: Cost Effective Suspension Mod's
Reply #13 on: 10 June, 2021, 09:48:12 AM
*Originally Posted by dave_a [+]
Can anyone else report what rate springs they put in their 1050's & talk about the results?
Racetech suggests 1.2kg for a lowered tiger (lowered 35mm in the rear) stock OE rate is .6kg. Seems a pretty dramatic change.
That's why I'm asking...

I lowered mine 25mm, it is ok with just me on it. Before lowering it was ok two up, now big sag at rear. Can only think it's the change in leverage. The T800 has gone similar.
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

#14

Offline dave_a

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Re: Cost Effective Suspension Mod's
Reply #14 on: 11 June, 2021, 01:07:12 AM
I am going to try Racetec .9kg/mm springs (up from OE .6kg/mm).
I also will try 5wt oil in the compression fork & 15W in the rebound fork.
Perhaps raise the oil level 10cm to limit brake dive.

I've read a LOT of old posts, spoke with HAMLIN on the phone, and gotten some great advice from forum members on this post.
Thanks for the help guys, by the way.

We'll see if she tosses me off into the buckwheat, or loosens my fillings.
BTW, I was riding a BMW Telelever front end oil-head prior. Even older than the Tiger.
Much more stable in the corners on and off the gas & brakes.
But the engine in the Tiger is so superior....damn, I like it. Worth fixing the front pogos for sure.
It'll be a month or so before I get it together, but I will report back.





#15

Offline leighz

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Re: Cost Effective Suspension Mod's
Reply #15 on: 14 June, 2021, 06:06:58 PM
I'd be curious to see how you get on - I was going to try something similar

fwiw I have a theory the front pogo-ing is down to the lack of control from the shock so it see-saws

#16

Offline dave_a

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Re: Cost Effective Suspension Mod's
Reply #16 on: 14 June, 2021, 08:03:11 PM
leighz
I'm 30 days out on putting the spring & oil in. I'll report back in with results. I'm going with the softest Race Tech spring at .85kg, an increase of 37% over O.E.

One almost comical occurrence. On a 4 lane, I'm 3rd bike back going 20 over the speed limit. Cop in the median! I hit the front brake hard 3 or four times so the boys behind me will know to slow. I swear it went to full compression each time. Reminded me of a 70's Honda CL scrambler in the woods. Yeah, I'm that old.
(I think I'll raise the oil level by 10cm also.) Don't think the rear spring had anything to do with that. One change at a time for me.
But that Hyperpro Street box with F&R springs makes some sense to me too.
D

#17

Offline Puccio

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Re: Cost Effective Suspension Mod's
Reply #17 on: 14 June, 2021, 08:10:18 PM
*Originally Posted by leighz [+]
fwiw I have a theory the front pogo-ing is down to the lack of control from the shock so it see-saws

This is true, particularly considering how poorly adjusted these Tigers 1050/Sport have been released over the years: way too little rear preload, paired to loose rebound damping. Hopeless rocking horses banging and bouncing onto bump stops.

#18

Online seangee

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Re: Cost Effective Suspension Mod's
Reply #18 on: 14 June, 2021, 09:44:13 PM
Damping valves (at least on the sport) are hopeless. Options are on and off with nothing in between. Off is like a pogo stick and on turns the fork into a block of wood that rattles your teeth on every bump.
Replacing the valves was the most significant difference I made to mine.
Nothing is foolproof to a sufficiently talented fool.

#19

Offline dave_a

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Re: Cost Effective Suspension Mod's
Reply #19 on: 14 June, 2021, 10:27:37 PM
After reading 10 years of suspension posts I can say...probably true. Some guys were happy with a spring, some guys also put different oil in the L&R tubes.
Most everybody who put gold valves AND springs was happy, but some guys weren't pleased until they got a rear (Ohlins?) shock too.

What did you do to your fork spring rate Sean?