Anyone removed the Trek Rail Battery Lock?

Dave_B

E*POWAH Elite World Champion
Subscriber
Aug 29, 2020
1,420
1,542
Newquay
It’s on the move…..

80D8E5F0-9E89-4537-A54C-542B20A27CB8.jpeg
 

Arron M

Member
Oct 14, 2021
67
45
Australia
[mention]Rob Rides EMTB [/mention] would you mind confirming these fit the 750wh bikes once you get yours as I’ve had a few people ask
 

EuanS2

Well-known member
Subscriber
Jan 10, 2021
90
126
Edinburgh
That’s mines fitted now, I didn’t have to bother about step 9 on the instructions as the fitment is perfect on my bike..

Big thanks to Arron for making them and shipping to the other side of the world and Dave for organising the group buy…. Thanks guys 😃
 


Zimmerframe

MUPPET
Subscriber
Jun 12, 2019
13,805
20,498
Brittany, France
Are you going to make one that does fit the bigger battery?
Will the 750 not mount with just two screws ? or Do we think this puts too much strain ?

I guess if an alternative version was made it looks like it could have two holes in the third position to accommodate different screw positions for the 625/750 ? Presumably the other two would mount the battery in the correct position ?

Or a 1mm thick triangular drilled plate which sits on top of that like a giant "washer" and lets the third screw be engaged spreading the load over the whole bracket (without the side loading you'd put on the top screw if you just used a big washer)
 
Last edited:

Dave_B

E*POWAH Elite World Champion
Subscriber
Aug 29, 2020
1,420
1,542
Newquay
Will the 750 not mount with just two screws ? or Do we think this puts too much strain ?

I guess if an alternative version was made it looks like it could have two holes in the third position to accommodate different screw positions for the 625/750 ? Presumably the other two would mount the battery in the correct position ?

Or a 1mm thick triangular drilled plate which sits on top of that like a giant "washer" and lets the third screw be engaged spreading the load over the whole bracket (without the side loading you'd put on the top screw if you just used a big washer)

I think the main problem is the mounting of the 750 OEM bracket uses M2 or M3 screws (I didn’t measure them but they are way thinner than the bolts that Aaron supplied for the 625) so the holes in a 750 angle bracket will need to be smaller to match.

I’m not sure I would trust just using two thin bolts to hold a 5kg battery in place, especially with holes that are way too big for the thinner bolts
 
Last edited:

Dave_B

E*POWAH Elite World Champion
Subscriber
Aug 29, 2020
1,420
1,542
Newquay
How strong are M2 bots?

Washers on the two holes that are already in the correct place would allow the bracket to be fitted.

A third hole drilled for the lower bolt would be easy to do.

But how strong would 3 M2 bolts be?
 

Dave_B

E*POWAH Elite World Champion
Subscriber
Aug 29, 2020
1,420
1,542
Newquay
Could anything be used to pack out the two holes that are in the correct position but are too wide?
 

Arron M

Member
Oct 14, 2021
67
45
Australia
Could anything be used to pack out the two holes that are in the correct position but are too wide?

Yes, you could use a shoulder washer or a shoulder screw, IMO even just a normal screw with a penny washer would hold, but I’d want the 3rd screw in place for peace of mind.
 

Dave_B

E*POWAH Elite World Champion
Subscriber
Aug 29, 2020
1,420
1,542
Newquay
The 4 screws that hold the handle on to the 750wh battery are M3.

Do we thing three of these will be secure enough given the weight of the battery? I guess it’s only lateral load they will be taking.(?)

B5BB39ED-B0F2-4949-AA09-39A9E3DDA02F.jpeg


0E19E80D-32D6-4147-A395-5AC9D2B94E8C.jpeg
 

Paulquattro

E*POWAH Elite
May 7, 2020
1,863
1,008
The Darkside
I personally would do it
The forces at work are minimal you would have to effectively shear off 3 x m3 bolts
All the weight is on the bottom mount,
The top as you said is just lateral force and not a lot at that.
 

EMTB Forums

Since 2018

The World's largest electric mountain bike community.

523K
Messages
25,846
Members
Join Our Community

Latest articles


Top