Jeffsy 29er Thread

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Jeffsy 29er Thread
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Posted: Apr 9, 2022 at 19:26 Quote
Tommy-P87 wrote:
I'm 6' 4" on an XXL and I love it. I changed the 50mm stem to a 35 because we have some very tight, steep switchbacks here and I definitely prefer it now. Pedals really well even with the super deluxe coil I've put on it. Frame bearings still feel good and I will have had it 2 years in June. Email YT and they will send you the very detailed exploded drawing

Thanks a lot for your reply! 2 years on original bearings is great life. Sounds like a solid bike from what I’m hearing. I will email YT for the diagram, thanks for the tip Smile

Posted: Apr 16, 2022 at 15:54 Quote
I got a -1 degree angleset for the Jeffsy 29er, so I am at 65 HTA. I wanted to maintain the climbing ability of the bike so I did not go with a 160mm fork increase. In fact, I believe the angleset makes the seat tube steeper! So far so good and the BB height isn’t standing out as a pedal strike issue as of yet.

Posted: Apr 26, 2022 at 6:31 Quote
StumpHumper45 wrote:
I got a -1 degree angleset for the Jeffsy 29er, so I am at 65 HTA

As in the Cane Creek version? Or do you more generically mean an offsetting headset?

Posted: Apr 26, 2022 at 10:50 Quote
dgsmith15 wrote:
StumpHumper45 wrote:
I got a -1 degree angleset for the Jeffsy 29er, so I am at 65 HTA

As in the Cane Creek version? Or do you more generically mean an offsetting headset?


Its the -1 Wolftooth Angleset!

Posted: May 27, 2022 at 9:44 Quote
Hi everyone!

Today I noticed that I have to change some bearings in the pivot/backend on my 2020 AL Jeffsy Base. Insteed of ordering full kit from YT.
Does anyone know the sizeing of them so I can pick em up at some "bearingshop"?
They usully have som name/code, right?

Thanks!

Posted: May 27, 2022 at 13:00 Quote
davveno1 wrote:
Hi everyone!

Today I noticed that I have to change some bearings in the pivot/backend on my 2020 AL Jeffsy Base. Insteed of ordering full kit from YT.
Does anyone know the sizeing of them so I can pick em up at some "bearingshop"?
They usully have som name/code, right?

Thanks!
Bearing sizes are on the technical drawing. There should not be a difference on frame material…

Posted: May 28, 2022 at 0:59 Quote
Hi!

The link dosent work for me :/
Anyone saved the document and can mail it to me?

Posted: May 28, 2022 at 2:49 Quote
davveno1 wrote:
Hi!

The link dosent work for me :/
Anyone saved the document and can mail it to me?

Davidhult@gmail.com
Try it now

Also on YT site
JEFFSY_MK2_CF_TECHNICAL_INFORMATION_CUSTOMER

Posted: May 28, 2022 at 5:54 Quote
[Quote="davveno1"]Hi everyone!

Today I noticed that I have to change some bearings in the pivot/backend on my 2020 AL Jeffsy Base. Insteed of ordering full kit from YT.
Does anyone know the sizeing of them so I can pick em up at some "bearingshop"?
They usully have som name/code, right?
63802....2of... rear pivot
3903....2of...front end of same part(chainstay)
61802....4of... on horstlink

Posted: May 28, 2022 at 10:34 Quote
Got it, thanks all!

Posted: Jun 2, 2022 at 1:05 Quote
undescended wrote:
davveno1 wrote:
Hi everyone!

Today I noticed that I have to change some bearings in the pivot/backend on my 2020 AL Jeffsy Base. Insteed of ordering full kit from YT.
Does anyone know the sizeing of them so I can pick em up at some "bearingshop"?
They usully have som name/code, right?

Thanks!
Bearing sizes are on the technical drawing. There should not be a difference on frame material…
JEFFSY_MK2_CF_TECHNICAL_INFORMATION_CUSTOMER

hello everyone, my bike is 2019 Jeffsy CF Pro Race 29,my bottom bracket was broken ,i don't know what's type bottom bracket of my Jeffsy,need help

Posted: Jun 10, 2022 at 11:44 Quote
Hey, I noticed some discussion here about rear tire rub. I have 2019 Jeffsy 29 (MK2) in size M. Wheel not have equal gap on chainstays (it`s closer to drivetrain side). On seatstays is not that noticeable, but wheel is close to right side as well. I have tried different wheel and new RD hanger with same result. How about yours, it`s this normal? Thanks folks.

Tire is Rock Razor 2.35" on 25mm inner width rims.


Posted: Jun 12, 2022 at 19:22 Quote
plazzer wrote:
Hey, I noticed some discussion here about rear tire rub. I have 2019 Jeffsy 29 (MK2) in size M. Wheel not have equal gap on chainstays (it`s closer to drivetrain side). On seatstays is not that noticeable, but wheel is close to right side as well. I have tried different wheel and new RD hanger with same result. How about yours, it`s this normal? Thanks folks.

Tire is Rock Razor 2.35" on 25mm inner width rims.
Could easily be the dish of your wheel. Might want to have a wheel builder look at it.

Posted: Jun 12, 2022 at 19:51 Quote
plazzer wrote:
Hey, I noticed some discussion here about rear tire rub. I have 2019 Jeffsy 29 (MK2) in size M. Wheel not have equal gap on chainstays (it`s closer to drivetrain side). On seatstays is not that noticeable, but wheel is close to right side as well. I have tried different wheel and new RD hanger with same result. How about yours, it`s this normal? Thanks folks.

Tire is Rock Razor 2.35" on 25mm inner width rims.

That is completely normal. Our rear triangle and chainstays are NOT symmetrical to account for today's larger cassettes and single chainrings. If you put your bike upside-down like in your photo, stand behind it and line that blue stripe (center of tire) up with the screws that hold the down tube protector on, you will see that the center of your tire is completely centered on the down tube.

It is the drivetrain side chainstay that limits your rear tire size, i.e, too large a tire on the back will rub on the drive-side chainstay first, while appearing to have clearance on the other side chainstay and both seatstays.

Posted: Jun 14, 2022 at 5:50 Quote
I have a Jeffsy Core 2 on the way, and I'm pretty OCD and like to make sure everything is solid and done right.
Any recommendations of things to make sure and check while I am putting it together?
I've read a few things about ungreased areas and improper torque specs on stuff.

Also anybody have a link to complete torque specs?


 
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