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Modifications, Accessories, and Appearance / Evotech Frame Sliders
« Last post by BTGendron on Today at 10:22:36 PM »
I’ll be honest, I was suuuppppeeerrrr hesitant on dropping 300 bucks on a set of frame sliders... but got dam these things are nice! Everything fit like a glove, and the overall fit and finish is fantastic. I have zero doubt that these things will take the hit if it ever comes to it, and not budge one bit. I feel as if they look the best and not some dumb looking “swoop” slider, and this ACTUALLY will protect the frame all together, since it connects in 2 of the highest poking out points of the frame. HIGHLY recommend, you’ll see why!





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Modifications, Accessories, and Appearance / Re: Gear ratio reduction
« Last post by BTGendron on Today at 10:15:02 PM »
I remember watching one of Brocks videos where he talked about, I think I’m recalling this right, on the zh2 with the swing-arm extension install, that he does not recommend going 520 on our bikes. I think I recall him even talking about going 530, but I could just be dreaming. I went with the EK gold zvx3 chain in 525 for mine.
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Not every ride but frequently I like to use my phone as my navigation (GPS). I have seen lots of cell phone holders that just looked ugly or had the phone sticking out in mid air or open to direct rain etc.  After a lot of searching I found a pretty good solution (Only 3 rides and 100 miles of testing so still premature) from Amazon B075PJT7NC  its only $10!!  (Leagway motorcycle phone holder)
At $10 you get a lot. I have attached it to the bolt that holds on the bracket for the front break reservoir. You will need to add a small washer but easily done. With the phone bracket and the washer you may want to get a little longer set screw but I didn't need too.  Note: the set screw has Loctite so always use high quality Allen wrench's!





With the long extension neck and my heavy Note 9 it bounces at low frequency over bumps but no blurring with high frequency. Turned at 90 degrees it doesn't touch the tank at full lock. Doesn't obstruct the screen or controls and is tucked away from direct wind forces. Most importantly without the phone it looks ok!
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Modifications, Accessories, and Appearance / Re: Gear ratio reduction
« Last post by AlexItaly on Today at 08:06:46 AM »
@ Bigal, yes it's an idea, but against mass reduction, even if we talk about grams, I know. In addition, the rear sprocket is alreay a big one! But the concept is correct. About eventual interference with other parts, I've checked while counting front sprocket teeth, and I haven't seen any clear problem.
@Wavshrdr: wise words, and I agree on the possibility to go with a lightweght 525 chain. I've checked most of the top class chain manufacturers and our current chain is around 41.000 N as tensile strenght. a 520 chain is around 36.000 N, means 12% less. In both cases there's a safety factor, but I don't how much is it, and anyway it's better to don't count on it and leave it in the safety field. I guess the best would be to ask advise to the manufacturers. I'm going to contact D.I.D. , PBR, Regina and EK. Let's wait for reply.

Any suggestion on the rear sprocket? Is it installed on other bikes? :084:
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Modifications, Accessories, and Appearance / Re: Gear ratio reduction
« Last post by Wavshrdr on Yesterday at 09:15:07 PM »
I understand the entire sprung, vs unsprung mass as well as rotational mass. When it comes to safety, I'll choose the side of being a bit more cautious. The tensile strength is key as you noted for chain strength. My point was there are some lightweight, yet strong, 525 chains. Not to mention WSBK bikes aren't capable of putting down the power the ZH2 is once it is tuned. They only have to survive a relatively short racing life in an almost perfect environment along with great attention paid to every part of the bike as well as meticulous maintenance. If I was looking at a 600/900 sized motor, sure I'd consider a 520 and went that route on another bike. But on something so strong from a power perspective, I'll play it safe.

If you do it, let us know how it goes. Hopefully no issues. Last chain I had fail was riding 2 up, on a cold night coming down from the mountains in New Mexico. Failed 20 miles from nowhere. It broke at about 85 mph and ended up locking the rear wheel. We made it to a stop, my girlfriend was scared to death and the rear tire was flat spotted beyond repair. We had to wait 90 minutes in the cold for a truck to come tow us. I was well below freezing. Never want to repeat that again and that was probably the least scary time I had when one broke. That chain only had 8k on it and I used an auto oiler to keep it lubed up.
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Modifications, Accessories, and Appearance / Re: Gear ratio reduction
« Last post by Bigal on Yesterday at 07:40:04 PM »
I would consider 2up in the back, will also shorten wheelbase a little. Heard changing the front sprocket was not as easy as most bikes. Something about the clutch slave cylinder and water pump hose in the way.
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Modifications, Accessories, and Appearance / Re: Gear ratio reduction
« Last post by AlexItaly on Yesterday at 03:17:26 PM »
For sure my choice should fall on the best on the market: racing types should work ( WSBK and MotoGP use 520 transmissions, even if probably they change them very often ). I'll evaluate the risk by comparing the tensile strength of the available chains with the original 525. Also the advantage in weight has to be evaluated, specially considering the effect of such reduction is applied on the rotating mass, with a ratio of around 1:5. Means 1kg saved on these masses is equal to around 5kg saved elsewhere. But I'm with you: I'll try to stay far from any risck of rupture. It happened only one time to me, it was on my old Yamaha Super Tènèrè: it was scary but I was running at low speed, so just a tremble on the bike and a "black snake" running on the road.
I have contacted some supplier to know their opinion and to have indication on model to buy, but no replies till now.


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Modifications, Accessories, and Appearance / Re: Gear ratio reduction
« Last post by Wavshrdr on Yesterday at 02:44:49 PM »
I follow you with going to a lower sprocket. I would be concerned with going with a 520 chain. Given that you maybe plan to flash, you better be putting on a top tier (strong) 520 chain. Usually a 520 will be weaker. Given the Z's power stock, and how much it can make when flashed, is it worth the risk for the minimal gains? If you want to save weight, just buy a better top tier 525 that does what they can to lighten the weight safely.

Have you have ever had a chain break on a bike? I have had it happen several times, and scary as hell.
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Modifications, Accessories, and Appearance / Gear ratio reduction
« Last post by AlexItaly on Yesterday at 08:35:37 AM »
Hi everybody,
winter is coming, so it's time for modifications! One of the first step I want to take is to reduce the gear ratio: currently our bike has the small sprocket with 18 teeth and the big one with 46 teeth, steel material for both. Chain is a 525 type. I know a lot of guys, in US specially, like to have more top speed, but my case is different: I run my bike around the mountains, so I prefer more torque at low rpm. Thus, I'm going to install a 17 teeth (1 less ) small sprocket...same big sprocket, but in ergal, and a chain 520 ( sprockets also of course ). In one time I'll reduce the ratio, with more torque, and the rotating mass, with benefit ( just a bit...) for handling and overall weight. The ergal sprocket will last less then the steel one, but I accept it. I don't know if the speedometer will be affected, but again, I don't care. Finally, I hope to flash the ecu soon, as most of you guys, so to recover the lost top speed: by -1 sprocket, the engine just need to reach around 550 rpm more to recover the original top speed, shouldn't be a big deal.
Now the question: do you know if our trasmission is installed on other Kawa models? There's not a dedicated kit for our bike, so it would be possibile to use another, one may be the one on Z1000?
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Modifications, Accessories, and Appearance / Re: PAIR block offs
« Last post by tacmedic5211 on Yesterday at 07:21:43 AM »
Im a noob when it comes to modding. What exactly does the block off do for the bike?
Thanks
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