Bike seat and rack keep slipping

[Vinn109]

Hello, I got a new bike rack and seat from Halford, but they keep slipping as I ride (Seatpost and Selle Royal). I have an apollo phaze e-bike that I installed the on, and I need a secure fit for my commute. Does anyone have any ideas on how to get a good rack and maintain the seat?

Thank you

 

[raleighnut]

Is the seatpost the right size ?

 

[ebikeerwidnes]

If you got it recently from Halfords then you need to take it back to them and show them the problem

you have guarantee and any fiddling beyond simple stuff might invalidate it

 

[fossyant]

What's slipping and where. The seat post slipping down ?

 

[88robb]

Make sure the seatpost clamp is tight enough and that you haven't exceeded the minimum insertion line. For the rack, check that all the bolts are properly tightened to the frame's mounting points. A carbon grip paste on the seatpost can really help stop it from slipping.