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Seatpack restraint
Posted: Thu Mar 26, 2020 7:45 pm
by ssnowman
My seatpack is an Alpkit one and no matter how I load it or fasten it , it sways all over the place.
I was thinking about trying to make a metal bracket of sorts to make it more stable and happened to come across this:
https://www.carradice.co.uk/bags/bikepa ... pport-rack
Has anyone tried this or something similar!
Re: Seatpack restraint
Posted: Thu Mar 26, 2020 7:51 pm
by PaulB2
Re: Seatpack restraint
Posted: Thu Mar 26, 2020 9:41 pm
by stevenshand
Apparently some seatpacks are much better than others and when fitted securely, hardly sway at all. Thats's what I've heard anyway.
Re: Seatpack restraint
Posted: Thu Mar 26, 2020 9:42 pm
by Richpips
The key with the Alpkit ones is to pack the section nearest the seatpost (that the straps tighten against) rock solid.
Re: Seatpack restraint
Posted: Fri Mar 27, 2020 1:14 pm
by ssnowman
Richpips wrote: ↑Thu Mar 26, 2020 9:42 pm
The key with the Alpkit ones is to pack the section nearest the seatpost (that the straps tighten against) rock solid.
I've tried many times, but it still sways unfortunately.
Has anyone tried one of the restraint bars?
Re: Seatpack restraint
Posted: Fri Mar 27, 2020 1:21 pm
by whitestone
How much stuff are you putting in there? I find once you approach 2kg or so then there's a bit of momentum in any swing so you feel it. It's so long since I've used something like an Alpkit tapered Airlock on its own that I can't remember how it behaved.
As Rich says: heavier, denser stuff towards the seatpost, light and fluffy further back will reduce the forces.
Re: Seatpack restraint
Posted: Fri Mar 27, 2020 1:40 pm
by ssnowman
whitestone wrote: ↑Fri Mar 27, 2020 1:21 pm
How much stuff are you putting in there? I find once you approach 2kg or so then there's a bit of momentum in any swing so you feel it. It's so long since I've used something like an Alpkit tapered Airlock on its own that I can't remember how it behaved.
As Rich says: heavier, denser stuff towards the seatpost, light and fluffy further back will reduce the forces.
That's what I've been doing. Maybe l am expecting to put too much in there.
Re: Seatpack restraint
Posted: Fri Mar 27, 2020 1:43 pm
by whitestone
A kilo to 1500g would be my usual seatpack load and that's when using a Wildcat Tiger harness, not just strapping a bag to the saddle rails.
Let's just say it's physics way of telling you to TLS
Re: Seatpack restraint
Posted: Fri Mar 27, 2020 3:00 pm
by BigRingGrinder
ssnowman wrote: ↑Fri Mar 27, 2020 1:14 pm
Has anyone tried one of the restraint bars?
Yes I've used the Alpikt exo rail with a Koala on a couple of occasions and found it did help to reduce the swaying issue.
But...
My Koala was the older style so didn't have the sleeve to support the rail. When I purchased the rail (probably two years ago now) they sold an additional lumpa harness so that the rail would work with older versions of the Koala. Doesn't look like they sell that now (at least I can't see it on the site) so if you have an older style Koala without the sleeve on top it may not work without a bit of bodging.
Re: Seatpack restraint
Posted: Fri Mar 27, 2020 5:39 pm
by ssnowman
BigRingGrinder wrote: ↑Fri Mar 27, 2020 3:00 pm
ssnowman wrote: ↑Fri Mar 27, 2020 1:14 pm
Has anyone tried one of the restraint bars?
Yes I've used the Alpikt exo rail with a Koala on a couple of occasions and found it did help to reduce the swaying issue.
But...
My Koala was the older style so didn't have the sleeve to support the rail. When I purchased the rail (probably two years ago now) they sold an additional lumpa harness so that the rail would work with older versions of the Koala. Doesn't look like they sell that now (at least I can't see it on the site) so if you have an older style Koala without the sleeve on top it may not work without a bit of bodging.
It's an older one, so probably won't work that well then.