BBSHD not fitting on Giant Talon 2 2022

[jthoni]

I have a new Giant Talon 2 (2022) and a BBSHD motor. I have seen many posts of people putting this motor on the Talon 2 (though pre-2022) and other similar Talons. I am finding it is only fitting when hanging straight down. Am I missing something? The diagonal tube extends slightly past the bottom bracket to allow for internal cable routing (and I think I see this in pictures of others who have installed this motor).

This is blocking the motor from being able to rotate up.

Did they maybe make a change in 2022 (though when I looked in the store, the 2021 seemed the same), or am I doing something wrong? I can't rotate it before putting through the bracket as the mounting tab would hit the frame.

 

[bram.biesiekierski]

Get your grinder out and start modifications

 

[jthoni]

I was almost sold on griding this down, but I am worried that it is more than just the lip of the tube. I wonder if the fact that the entire down tube hangs lower than the bb will mean that I won't have clearance to rotate the motor. I don't want to grind this and then find it still won't work. I do see that there is clearance for the cables, but I can't quite get an accurate mental picture of where the motor will finally sit.

A couple more pictures to help illustrate:

The thin red line is where the bottom of the tube would be if it didn't bottom out right to the bb.

Here is another angle:

And another video just for giggles:

 

[bram.biesiekierski]

You could guestimate how much you could adjust the motor using some basic geometry.

Central Angle Calculator

Calculate the central angle of a circle with ease using the central angle calculator. Enter arc length and radius to get accurate results instantly.

www.omnicalculator.com

A simple online calculator like this can help gauge how far you could rotate the motor, per MM you grind from the down tube.

Measure the radius from the center of the BB, to the spot where the motor fouls the tube. Then use the arc length for how much you would potentially grind off the tube. EG 2mm, 3mm, 4mm etc. (In the direction of the arc of rotation.) When you plug that into the calculator, it will give you a calculated angle for any given arc length/radius.

This is how much angle of rotation of the motor you will be able to gain. You can use the calculator to work out if simply grinding the edge down, and how much, would be needed to get the desired angle change.

 

[jthoni]

I realize even in the worst case, it would just be hanging low. It would still work (it fits, just does not rotate up). It actually ends up being a bit like this guys: 52V BBSHD on Giant Trance 2 LTD 2017 - EMTB Forums

 

[lseefried12]

Hey man I was looking to do same conversion as you, just had a couple questions if you don't mind?
1.)Did you end up having to grind off that lip for the motor to fit? Or did you just leave the motor facing downwards?
2.)What BBSHD bracket size did you buy? It comes in three sizes, 68-73mm, 74-100mm, and 101-120mm. I would assume its the 74-100mm that fits the pressfit92 bottom bracket but just wanted to double check
3.)Did your pressfit 41 adapter fit without any modifications?

 

[ethin]

Did you end up grinding the lips so you can rotate the motor? I am about to start a conversion on a bran new Talon 2/ BBSHD this weekend. I am afraid to grind but if someone else was successful I would love to hear from them. I still think it is a great bike for putting a BBSHD

 

[ethin]

This is what I have done with my Giant Talon 2. You only need to grind a few millimeters to get a much better angle for the motor and ground clearance.

I believe most of newest mountain bike like Giant, Trek, Specialized etc.. have these lips under the down tube for routing the cable.

You can take an angle saw but I took a Dremel tool and a meal file to be on the safe side.

The wires/cable fit perfectly under the motor, and I painted the frame.