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Author [ES] [MY] [PL] [PT] [IT] [DE] [FR] [NL] [DK] [NO] [GR] [TR] Topic: Gearing - Z900 - version 2.0  (Read 17764 times)

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Offline Led Zed 70

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  • Bike: 2017 Z900ABS
  • Town / City: Round Rock
  • Country: us
Re: Gearing - Z900 - version 2.0
Reply #60 on: June 01, 2021, 11:00:41 PM
Agree getting that nut off was a bitch! Made me go out and by a HD impact wrench! I just loosened my back wheel and had plenty slack to get new sprocket on without breaking chain. Dont know why you would have to break chain? I only went up to 16 in front back stock 44. Good luck.

Offline CapAce

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Re: Gearing - Z900 - version 2.0
Reply #61 on: June 21, 2021, 07:03:08 PM
OK, I installed the new JT sprockets (17/41), and yes, the front drive sprocket nut was very difficult to loosen. I tried first with a long breaker bar and 27 mm socket but it was on rock solid, so I gave up. Like LED ZED did, I used an electric impact driver, and it spun off in 3 seconds. I did this while  the tranny was in neutral, and without using the rear brake, and without blocking tire with a piece of wood. This tells me that that it was more the impact hammering that loosened the nut, not the amount of force I put on it. Note that in second YouTube video below, the guy regularly uses an impact driver on track bikes to change sprockets.

The following YouTube videos on sprocket replacement were a great help, search:
- Dellboy's Garage motorcycle front sprocket change
- How to install a motorcycle chain and sprocket kit (Sport Bike Track and Gear)

I used  the original drive chain, without breaking it.
BTW, love the new gearing. Feels less like a dirt bike. It's great for passing quickly on the highway. Thanks to everyone on this discussion who helped inform me on this decision, and on how to making changes with confidence.
 :152:
Last Edit: June 21, 2021, 07:07:45 PM by CapAce
George: "All that you represent to them is freedom"

Offline RobZ900

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Re: Gearing - Z900 - version 2.0
Reply #62 on: June 21, 2021, 08:34:56 PM
Glad you like the gearing. On a different note, be very wary about following Del Boys garage videos, the guy is a twat who passes on wrong and sometimes dangerous information.
Motorcyclist - noun (moh-ter-sahy-klist)
: a person willing to take a container full of flammable liquid, place it on top of a hot, moving engine and then put the whole lot between their legs!

Offline CapAce

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Re: Gearing - Z900 - version 2.0
Reply #63 on: June 21, 2021, 10:03:37 PM
OK, thanks for the heads up!
George: "All that you represent to them is freedom"

Offline Its about speed

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Re: Gearing - Z900 - version 2.0
Reply #64 on: June 22, 2021, 02:59:21 AM
There's 2 minor benefits to the 17/41 gearing I've learned.
My avg fuel mileage, by the dash, increased by 10%. That saves me 45 cents a gallon.
My rear tire is producing more mileage too. It's hard to measure because hot weather eats rubber faster than cool weather. If the 10% holds true then, I save $12.20 per tire.

You guys would crack-up if I videoed the way I break-loose the countershaft nut.   :745:
Jack the rear 2-3 inches.
I use an 8' Doug Fir 2x4 strapped to the rear wheel and tire. "With a long enough lever I could move the world."
27mm shallow socket and long breaker bar against the top of the left footpeg.
wd-40 on the threads, several light taps on the socket.
Crude but never fails.
 
Last Edit: June 22, 2021, 03:04:39 AM by Its about speed

Offline CapAce

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Re: Gearing - Z900 - version 2.0
Reply #65 on: June 22, 2021, 04:50:27 PM
I'm glad I wasn't the only one contorted around my bike (holding a racket in one hand and pressing on the brake with the other hand) trying to get that damn nut off, without any results. Success is in the results, so your method worked!  :062:

I think that it was Jasper that mentioned he he got 50+ mpg (imperial gal.) on his tours in Europe with his 15/41 sprocket setup. With the rising costs of high octane gas, that is significant. Less tire wear is an added bonus.

I continue to tweak my bike to my liking, almost as rewarding as riding the Z900.
Last Edit: June 22, 2021, 04:51:15 PM by CapAce
George: "All that you represent to them is freedom"