fatboyonabike
Captain oblivious
surely that paint is structural enough? the welding is just there as a formality
BIKE RACKS AND CARRIERS FOR CARS MEGATHREAD - all questions asked and answered here
- Thread starter THE Manik Man
- Start date
moorey
call me Mia
You bought an Orange!
PJO
in me vL comy
I saw those kits and in the photos it looks like the hoops that hold the front wheel make it sit almost upright. Most of the vert. racks have the wheels on an angle so that you minimise handlebar interference and can put your bikes closer together...
Huh? The structural standard dissuades welding across a tension member for temporary attachments though that is for other reasons. How pray tell do you join something? Butt welds are fine and a joggle weld with the horizontal section (in this case) on the neutral axis is fine. That weld is the cap over a root run. Both sides single vee prepped and the undercut where it appeared filled... not to mention that is an unbraked box trailer with a gvm of 750kg. I did the calcs when I first built it, stress was just about...
...
fuck all.
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PJO
in me vL comy
Yep, look fine there, maybe just the angle of the photo that I saw on FB.Seem ok here -
I haven't yet seen a photo looking directly at the rear of the car.
moorey
call me Mia
I don't think there's a 5-6 bike upright on the market that doesn't at least need placement considered to stop potential rubbing. Too angled, bars can touch TT, not enough, bars can touch bars. On the singletrail, if you have all identical bikes, you could have issues. They work best if you load biggest/stackest to smallest/steepest.
nathanm
Eats Squid
flamesuit on
Why does no-one use Tailgate pads anymore? The amount of utes I see these days with $1500+ bike racks hanging off the back is astounding. So many of them need additional strapping and padding to prevent movement and damage and not to mention the failures. So many stories about bikes hitting the bitumen at Highway speeds.
I'm finally in a position to purchase a ute again and have been looking at racks, but just can't see a reason why I would need one? For many, many years I never had a problem with piling up 5 bikes, blokes and a weekends worth of gear into the back of the triton with the bikes hanging over the tailgate. A camping family holiday would be a different story obviously.
Why does no-one use Tailgate pads anymore? The amount of utes I see these days with $1500+ bike racks hanging off the back is astounding. So many of them need additional strapping and padding to prevent movement and damage and not to mention the failures. So many stories about bikes hitting the bitumen at Highway speeds.
I'm finally in a position to purchase a ute again and have been looking at racks, but just can't see a reason why I would need one? For many, many years I never had a problem with piling up 5 bikes, blokes and a weekends worth of gear into the back of the triton with the bikes hanging over the tailgate. A camping family holiday would be a different story obviously.
ozzybmx
taking a shit with my boobs out
XL's or DH bikes to the left
DougalStrachan
Likes Dirt
I see plenty of tailgate pads, but if you want to carry anything else they are a bit of a pain.
As a person who has; Roof Racks, Tailgate pad (OK a bit of cardboard) and vertical rack and uses all three fairly often I'd say it's due to what the hell your doing and what state your car is currently. I'd use the vertical rack all the time as it's the easiest, but I use the ute for other stuff that makes me take the rack off. If no rack and I'm just doing 2-3 bike without other stuff I chuck a bit of cardboard over the tailgate and off I go. If I'm doing full trip with camper then they go on the roof.
moorey
call me Mia
Tailgate pad rubbed the cuss out of my bikes, nothing touches on my upright rack.
nathanm
Eats Squid
Your experience (and many like yours) is a bigger deterrent than "rubbing" which I personally never had an issue with. Each to their own I know but hearing this sought of thing, constantly, has put me off.
moorey
call me Mia
Probably also dependant on the amount of time in there and the terrain being driven on. Was always the crown that lost its paint after a while.
Stredda
Runs naked through virgin scrub
This is what I am talking about. any part of the draw bar should not have welds that run across the frame member, they should run inline with the beam. This goes for up near the tow hitch as well.
Attachments
Where is that applicable in what I have done? That doesn't mention the coupling and there are plenty on the roads with welded on couplings on the top of the drawbar. My weld across is at the neutral axis. The structural standard AS.... allows for permanent weld across structural members. The standard recommends not welding temporary attachments across the tension side of a flange because temporary attachments are usually not welded to the same quality as permanent welds and can introduce undercut and craters which are stress raisers and can lead to cracking. We had a P91 header that the guys in the yard welded carbon steel transport frames to because they didn't know any better. Those welds cost about $100k to make good by the time they were ground out, tested, filled, tested, linished flush and tested.
That pic you posted is bullshit anyway and comes down to the welding and joint design. They are concerned about flexing and undercut or poor weld at that joint allowing flexural fatigue. Not applicable. The load at the coupling end is shear of 75kg. There is no flex.
That pic you posted is bullshit anyway and comes down to the welding and joint design. They are concerned about flexing and undercut or poor weld at that joint allowing flexural fatigue. Not applicable. The load at the coupling end is shear of 75kg. There is no flex.
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Staunch
Eats Squid
Tailgate pads are the best thing for DH bikes with dual crowns. The upper stanchion contacts the frame via bumpstop and wedges the tyre against the pad. Only points of contact are the tyre and downtube. Bikes are locked in, no worries.
With everyone (including me) moving to single crown bikes, there is nothing to stop the fork rotation. This means that instead of the tyre being the contact point, it's now the whole side of the fork leg. It's bad enough on sealed roads doing 100km/h down the freeway, but if you're driving rough shuttle tracks the bikes want to swing side to side more. If you have a muddy day, this is pretty much just like wet-sanding your lowers. It also allows the rear wheels to slip around as the frame rotates back and forth in the strap, so you're more likely to end up with a pedal in your frame/chain/spokes
wkkie
It's Not Easy Being Green
The failure @moorey was talking about wasn't a vehicle rack though and as I understand was a rarity with that brand of rack.
Tailgate pads a rough on the frames, lots of rubbing and very hard to eliminate movement. A vertical rack has minimal bike contact and solves those issues.
moorey
call me Mia
Correct. And that was a total freak also. Never heard of an issue with the brand.
Sheepie
Likes Bikes
That’s interesting, the wheels are jammed into the hoops rather than resting on the top bar…Seem ok here -