Doctorbass
100 GW
There is still something that i need to solve about full suspension bike rack.
Most of them are rated 10 kg and some are 15kg (I mean the seat post model)
Butthey are generally made of aluminium. and when we put let say a 48V 15Ah lifepo4 battery on it that weight around 17lbs + the charger 4 lbs + the bag 2 lbs that weight become more like 23lbs load
I still think this is borderline eventhough it is rated 30lbs.
The movement of the bike with every shock due to many crack or put holes on the road often create violent movemebnt on the seatpost and the battery mass may add stress because it just can't follow that fast movement of the bike frame via the seatpost.
I broked 3 rack tube rack from now and i NEVER overloaded them
(never carried more than the max recommended load).
R.I.P. seatpost rack:
-Topeak 25 lbs rated price 49$ …..load was 22lbs
-Voyager 25lbs rated… load was 15lbs
-Canadian tire 20lbs rated.. load was 20lbs
Every time the rack broke at the same place: just after the clamp on the seatpost where the rack tube is soldered on.
Aluminum can’t be bended and I think that it’s the multiple shock that created the stress and weaked the rack tube.
Now.. I’m searching for a STRONG seatpost rack.. the best would be to get it made of steel !
Any idea or recommendation?
Thanks for any of your recommandations
Doc
Most of them are rated 10 kg and some are 15kg (I mean the seat post model)
Butthey are generally made of aluminium. and when we put let say a 48V 15Ah lifepo4 battery on it that weight around 17lbs + the charger 4 lbs + the bag 2 lbs that weight become more like 23lbs load
I still think this is borderline eventhough it is rated 30lbs.
The movement of the bike with every shock due to many crack or put holes on the road often create violent movemebnt on the seatpost and the battery mass may add stress because it just can't follow that fast movement of the bike frame via the seatpost.
I broked 3 rack tube rack from now and i NEVER overloaded them
(never carried more than the max recommended load).
R.I.P. seatpost rack:
-Topeak 25 lbs rated price 49$ …..load was 22lbs
-Voyager 25lbs rated… load was 15lbs
-Canadian tire 20lbs rated.. load was 20lbs
Every time the rack broke at the same place: just after the clamp on the seatpost where the rack tube is soldered on.
Aluminum can’t be bended and I think that it’s the multiple shock that created the stress and weaked the rack tube.
Now.. I’m searching for a STRONG seatpost rack.. the best would be to get it made of steel !
Any idea or recommendation?
Thanks for any of your recommandations
Doc