Rear Shock help - MVAgusta.net
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post #1 of 11 (permalink) Old 07-28-2009, 01:46 AM Thread Starter
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Rear Shock help

Hi guys, is there any way to stiffen the rear F4 shock, there is an air valve so can I pump it up?

It's this shock, I'm doing up a classic Kawasai triple and it's a little soft

Last edited by cabbie; 07-28-2009 at 02:01 AM.
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post #2 of 11 (permalink) Old 07-28-2009, 07:00 AM
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Turn the compression way up and crank in some preload.
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post #3 of 11 (permalink) Old 07-28-2009, 07:57 AM
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Wink TZ 750 Chassis is the way to go for a 500/750 triple.

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Hi guys, is there any way to stiffen the rear F4 shock, there is an air valve so can I pump it up?

It's this shock, I'm doing up a classic Kawasai triple and it's a little soft


I raced those MoFu's for years!! H1rs and H2Rs and reckon that shock will bend the frame as its like spaghetti............The way to go is to get a TZ 750 (OW31) Chassis. The kwack engine will fit right in with little to no modification at all, believe me even the engine sprocket and rear sprocket line up exactly.

I raced an H2r here on the IOM a number of times with that configuration and it was wicked!!


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post #4 of 11 (permalink) Old 07-29-2009, 05:19 PM Thread Starter
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This is only a 400 bud, it doesn't have the mental power of the 750's.

I tried winding the spring down with the allen key thing but it only moved like 5mm! is that all it moves?
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post #5 of 11 (permalink) Old 07-29-2009, 05:42 PM
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This is only a 400 bud, it doesn't have the mental power of the 750's.

I tried winding the spring down with the allen key thing but it only moved like 5mm! is that all it moves?
You'll be way oversprung then!! I reckon an 8.5 or a 9.0 kg spring is what you'll need. (Or even an 8.0)


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post #6 of 11 (permalink) Old 07-29-2009, 05:57 PM Thread Starter
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I have the shock attached to a fireblade linkage now and it's just a bit too soft, if the spring adjustment only moves 5 mm is there any spacers I can add to compress the spring more?

Sorry to keep asking questions about a Kawasaki hybrid but you guys have the shock knowledge I need.



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post #7 of 11 (permalink) Old 08-01-2009, 12:41 AM
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Tz-750

the TZ-700 had twin shocks
the TZ-750 and the later OW-31 use a shock that is about 30 inches long and no linkage i used to play with Yvonne Duhammel's H2Rs and wrenched on Roberto Pietri's and Steve Mc Laughlin's OW-31s back in the late '70s
guess who used to tune them on the street? back when cops weren't pricks
~160 in a 25MPH zone and they just smiled and want to look at it
the neighbors never said a word....
now we have crotch sniffing yuppies, and pin heads that want to make sure you have reflectors on the sides of your bike

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post #8 of 11 (permalink) Old 08-02-2009, 03:27 PM
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Arrow MV Rear Shock

Cabbie
Hyperpro makes a spring or two for the MV shock (along with others I'm sure) that will stiffen things up for you. I suggest you look at getting the right spring rate for your project, as the bases for the stock one is surely different then what your hopping to do with it now. This of course is all assuming you have the correct travel to begin with.
PK/MV1
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post #9 of 11 (permalink) Old 08-02-2009, 03:36 PM Thread Starter
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Cabbie
Hyperpro makes a spring or two for the MV shock (along with others I'm sure) that will stiffen things up for you. I suggest you look at getting the right spring rate for your project, as the bases for the stock one is surely different then what your hopping to do with it now. This of course is all assuming you have the correct travel to begin with.
PK/MV1
Travel is the problem here and only having 6mm of rebound adjustment, I need a shock with a fully threaded body so I can wind it down to suit the project, I'm bidding on an RSV 1000 Ohlins now so hopping to win it.

Anyone want to buy this F4 shock?

Thanks for the help too.
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post #10 of 11 (permalink) Old 08-02-2009, 05:16 PM
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Question

Hold on there Cabbie,That is no air valve, most shocks are charged with nitrogen gas, not air.


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