My custom bike rack .:Updated:.

[-Elliot-]

For my design and technology project I decided to make a custom bike rack for a 6x4 trailer. After much research I decided to use the same design principles as a Gripsport bike rack.

*EDIT* I took some better photos and attached a plan I made.

http://forums.farkin.net/attachment.php?attachmentid=45632&stc=1&d=1157872949

http://forums.farkin.net/attachment.php?attachmentid=45631&stc=1&d=1157873021

http://forums.farkin.net/attachment.php?attachmentid=45643&stc=1&d=1157873159

Disclaimer: Check that the measurements in the plan work for you Before you build it.

[trouble]

YAh first post...

did u see if gripsport are copywrited because that looks EXACTLY like a gripsport, but great work it looks pro.

[dh skunk]

Nice work you should get some plastic dip to go on the crank holder's

[-Elliot-]

Nice work you should get some plastic dip to go on the crank holder's

I’m going to do that as soon as I have some spare time

[MATTY TYLER]

thats mint, how long did that take you and how much did it cost if you dont mind me asking, does it just bolt onto the top of the trailer? or sit inside? i would buy one for sure.

[leitch]

did u see if gripsport are copywrited because that looks EXACTLY like a gripsportsame design principle, not design... wheel well and crank holder isnt exactly a revolutionary thought, grip just makes damn good ones... this has subtle differences.. goes in a trailer, not tow bar mount. 4 bikes, not 2. racks are held together differently (metal grate thing underneath)...

looks like a damn good job..

[Hamer]

how did you cut out the slots for the cranks? i found a mill was the best thing for the job 'cause i dont have access to a laser cutter..

[Binaural]

Why not try to do something a little more innovative? It's fine to use established designs as a benchmark, but good design should be about more than just copying existing stuff. Perhaps you could try and work out a crank holder that automatically adjusts to a range of cranks, from Saint to Profiles? Or come up with a fixing that attaches to the seat?

[rhyno]

YAh first post...

did u see if gripsport are copywrited because that looks EXACTLY like a gripsport, but great work it looks pro.

It's nothing like it, just cos it holds the bike by the cranks doesn't mean he copied grip.

You might want to brace the crank holders too otherwise they'll bend.

[-Elliot-]

thats mint, how long did that take you and how much did it cost if you dont mind me asking, does it just bolt onto the top of the trailer? or sit inside? i would buy one for sure.

Ok... All Up the project cost about $250-300 but that was using premium heavy gauged galvanized materials, that price also includes 4X Gripsport Crank holders.
Its Designed to slot into the trailer so it can be removed when the trailer is needed for other purposes, but it can also be bolted in. Build time took about 5 weeks but that was with plenty of interruptions at school.

how did you cut out the slots for the cranks? i found a mill was the best thing for the job 'cause i dont have access to a laser cutter..

I actually purchased the crank holders from Gripsport Because I wanted something with a good finish and didn’t really have the equipment to mill it out.


You might want to brace the crank holders too otherwise they'll bend.

The crank holders need no bracing… they have withheld someone weighing 100kg standing on them sideways. :eek:

[Ingeniator]

mmm, that thing is nice. Might look into making one up for myself.

[julianwisbey]

i have made one its like a gripsport dual carrier
(im sorry for copying you grip :o )

in total i cost me 24 dollars and its sick but its nothing compared to a gripsport one !!! ;)

[hubbie]

nice mate. quite similar to my project.

post yours up:
http://forums.farkin.net/showthread.php?p=738201

[Grip]

The crank holders need no bracing… they have withheld someone weighing 100kg standing on them sideways. :eek:

Quality looking piece of work there, Maxxis... Good on you. But if I were you I'd keep an eye on where the holders are welded to the frame because regardless of how strong the weld seems now, with use and over time and without bracing there will be a considerable amount of vibration etc trying to tear them loose. Just a thought;)

[andy73]

anyone know where to get plastic dip?

[Customjimmy]

anyone know where to get plastic dip?

next to the plastic cheese and crackers, fnarr fnarr.

[steve66]

thats a very nice bike rack man well done i would love to try and make something like that. good work buddy

[Ingeniator]

anyone know where to get plastic dip?

Sailing/ Watersports shops are a likely option, i think i remember reading that someone on here got some red stuff from one.

[-Elliot-]

Added New Pictures and attached a design plan for those who are interested.

[MATTY TYLER]

sweet, good work getting the plan up cheerz. how does it fit the longer wheel based dh bike? do they fit ok??

cheerz matty

[-Elliot-]

sweet, good work getting the plan up cheerz. how does it fit the longer wheel based dh bike? do they fit ok??

cheerz matty

I haven’t actually tried a proper DH bike on the rack. It fits XC bikes with room so I assume a DH rig would fit.

[MATTY TYLER]

i suppose to fit inside the trailer it couldnt be much longer hey. do you think it could be bolted to the top of a trailer?

[-Elliot-]

i suppose to fit inside the trailer it couldnt be much longer hey. do you think it could be bolted to the top of a trailer?

I made this rack to fit inside a 6x4 box trailer, but it can easily be bolted to a flat top trailer or bolted to a larger diameter trailer. The only reason a bike wouldn’t fit is if it was longer than the internal length of a 6x4 box trailer.

[MATTY TYLER]

cheerz mate, ill try make one up if we can find a decent box trailer, how long did it take to ship the crank holders? would you recomend plastic dipping them?

cheerz matty

[-Elliot-]

cheerz mate, ill try make one up if we can find a decent box trailer, how long did it take to ship the crank holders? would you recomend plastic dipping them?

cheerz matty


It doesn’t take long for grip to mail the cranks holders, I got mine in 3 days. (Thanks for the good service grip). I would definitely put plastic dip on the crank holders, without it the cranks will get really scratched.

[MATTY TYLER]

hey man, 1 more question, how much does it weight and how many people it take to move? cheerz matty

[-Elliot-]

hey man, 1 more question, how much does it weight and how many people it take to move? cheerz matty

Mine would be 30-40kg because it’s made of extra heavy gage materials, but it only requires 2 people to move.

[plutly]

If you put it on top of the trailer walls, then you can still use the trailer to store stuff while your travelling and you have more room for the bikes.
Just my 2c.

[MATTY TYLER]

hey maxxis,
where did you get the steel gutter? did you just buy plate/strip and bent it?
cheerz matty

hey plutly,
thats what im planing to do with mine, and raise it 250mm above the trailer to fit all the gear and eskys in so it can be used to take the bikes on a road trip. when i get around to buying all the steel and finding a cheap trailer ill make it up and post pics, anyone selling a 7x4 box trailer cheap?

cheerz matty

[MrPlow]

Nice rack mate.
Want it to last forever and not scratch your cranks? http://www.rhinolinings.com.au/rhino/default.asp

[-Elliot-]

If you put it on top of the trailer walls, then you can still use the trailer to store stuff while your travelling and you have more room for the bikes.
Just my 2c.

That’s a good idea... but i preferred to have the bikes sitting right in the trailer.

hey maxxis,
where did you get the steel gutter? did you just buy plate/strip and bent it?
cheerz matty

cheerz matty

I ordered it from the local steel shop… It’s not actually guttering its some heavy gage open channelling that cost an arm and a leg.

Nice rack mate.
Want it to last forever and not scratch your cranks? http://www.rhinolinings.com.au/rhino/default.asp

I might give that a try.

[::RideSiK::]

how did you cut out the slots for the cranks? i found a mill was the best thing for the job 'cause i dont have access to a laser cutter..

angle grinder...

im going to mess around and press some next time i think...

[::RideSiK::]

I ordered it from the local steel shop… It’s not actually guttering its some heavy gage open channelling that cost an arm and a leg.



.


any sheetmetal shop should be able to press it up pretty easy out of an off cut...

going rate at our place for something like that would be a carton... if there wasnt a decent sized peice of scrap around then the price of the material as well...

use zinc or galv sheet so it dosent rust... paint will stick better to the zinc sheeting...

[Grip]

angle grinder...

im going to mess around and press some next time i think...

Sorry if I've misunderstood something here, but why is RideSik answering a question put to Maxxis?

Maxxis didn't use an angle grinder at all. His crank holders are laser cut.

Also, RideSik, you mentioned pressing the crank holders. The only problem with that is the difficulty of getting the closed angles right (it's pretty tight in there) PLUS with a pressed piece there's no support for the open side and the slot can spread open quite easily.

Cheers

[3SK1]

Just an idea, as you said the steel channeling coast an arm and a leg, i just asked the chippies at a Construction site for some steel housing studs, sot was free, edges are already rolled and smooth for you, perfect width for even the widest Minion. Try Industrial sites, like tilt panel factories cause they are more likely to use steel, than timber.

[Big_Al]

What is the distance between the cranks holder and the sheet metal flatforms
Nice project...
Is it copywrite??:confused:

That will make life easy

[::RideSiK::]

Sorry if I've misunderstood something here, but why is RideSik answering a question put to Maxxis?

Maxxis didn't use an angle grinder at all. His crank holders are laser cut.

Also, RideSik, you mentioned pressing the crank holders. The only problem with that is the difficulty of getting the closed angles right (it's pretty tight in there) PLUS with a pressed piece there's no support for the open side and the slot can spread open quite easily.

Cheers

im just putting other options out there, sorry for not being clearer...


dunno, i havent had any problems pressing them yet its tight but it works, im using 2 mm galv sheet. the width of mine are 45mm (13,30,45,30,13).... strength / durability issues are yet to raise its head but ive seen it happen on thinner walled stuff on the bike club trailers and stuff

[dirtjump4life101]

if you dont mind me asking how much did it cost u to make?

[mtb_champ]

wow big gravedig.... i think the crank holders are like $60 each or somthing and there are 4 there so thats ~$250 already + other metal... i wouldn't be suprised if this cost him $300+.... but you might as well wait for his answer considering you dug this from 2 yrs ago.

[sam705]

if you dont mind me asking how much did it cost u to make?

Ok... All Up the project cost about $250-300 but that was using premium heavy gauged galvanized materials, that price also includes 4X Gripsport Crank holders.


Wouldn't hurt to open your eye's a little wider next time champ.

[dirtjump4life101]

Wouldn't hurt to open your eye's a little wider next time champ.

yes i admit to not reading some of the posts