So what's so bad about the 919 stock rear shock? - Wrist Twisters
 
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post #1 of 7 Old 03-31-2013, 02:55 PM Thread Starter
Pilus Posterior
 
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So what's so bad about the 919 stock rear shock?

The 919 comes stock with a short travel, remote reservoir, adjustable shock.

1st, is it rebuildable / revalveable

Would rebuilding it make it much better? I've heard before that's some shocks just don't last very long, after 10K miles, they just don't perform as they should.

Is it an issue of not being adjustable enough? Does it adjust preload and rebound?

Is it an issue of it being setup for a certain weight/riding style whereas the aftermarket would be custom for your needs?

I see where people are suggesting the Ohlins, but that's a pretty big investment. I saw where they had electronic control, is that so you can go up to the twisties and change the settings, then change them back for the ride home?

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post #2 of 7 Old 03-31-2013, 03:29 PM
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In short, the 919 rear shock is uber crap and is not worth rebuilding. the reservoir serves more for looks than anything else since the valving is all wrong, internals are all wrong and is just an overall bad design for the short wheelbase of the 919. Then you have the spring rate which is just god awful.

By the time you get done rebuilding a stock rear shock to work properly (i.e. somewhat similar to an Ohlins or Penske), you end up paying close to the base model rear shock of the Ohlins/Penske while still not being on the same level. You also run the risk of someone building the rear shock without knowledge of the 919 and it's inherent rear end issues.

While buying a new rear shock may be an expensive investment, it really is an investment in your riding pleasure. Not to mention they hold their resale value really well. Typically selling really fast (usually before they're even posted on the forum) for only a hundred or two less than retail so you really get your money's worth out of them.

Electronic rear shocks are far too advanced for the 919 not usable for us sadly.

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post #3 of 7 Old 03-31-2013, 03:42 PM Thread Starter
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I read one of the threads here, it didn't seem to be concluded about how this would compare to the Ohlins: https://www.wristtwisters.com/forums/...ity-23562.html

Did this end up being a good deal?

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post #4 of 7 Old 03-31-2013, 04:12 PM Thread Starter
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So when you say "without knowledge of the 919 and it's inherent rear end issues." ... is that the 'wagging like a dog' coming out of a turn I've heard about?

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post #5 of 7 Old 03-31-2013, 04:33 PM
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Quote:
Originally Posted by KarlJay View Post
So when you say "without knowledge of the 919 and it's inherent rear end issues." ... is that the 'wagging like a dog' coming out of a turn I've heard about?
Yes, although the words are misleading, and "yo-yoing" is much more descriptive and accurate.
The 919 is very torquey to begin with, is geared short because of its inherently low aero limited top speed, has a very flat swing arm angle when stock length shocks with later model soft springs are used, and has no link.
This makes the 919 a candidate for being The Ultimate Squatmeister.
Which is why the bike responds so well on the track when fitted with a stiffer sprung longer length shock that has lots of low speed compression damping force.
And comments you read about 919 frame flex or swingarm flex are, um, misinformed, unless coming from a serious high level road racer who has set of serious race stickies mounted to the wheels.

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post #6 of 7 Old 03-31-2013, 07:17 PM
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02-03 is a pogo stick. Launches me off the seat & I am not light, far from it. 04 up is at least tolerable.

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post #7 of 7 Old 03-31-2013, 07:37 PM
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Quote:
Originally Posted by Bryce919er View Post
02-03 is a pogo stick. Launches me off the seat & I am not light, far from it. 04 up is at least tolerable.
Pushed on a track it's not.
On the street, yes.

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