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Author: Subject: homemade Crabbuggy
jantie


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[*] posted on 11-8-2019 at 09:59 AM
homemade Crabbuggy


inspired by many buggyers who build this kind of buggy for many years now,
i took an old Libre V-Max and started cutting, grinding and welding.
and this is where i'm now..



pic 1: axle behind the seat modified
pic 2: just dropped to see how it could be.
pic 3: got some iron from the local store
pic 4: broader and longer is better for stability
pic 5: made some progress today
pic 6: slowly getting there...

already found a second-hand skateboard to be used as a steering-board.
feel free to comment






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Randy


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[*] posted on 11-8-2019 at 10:04 AM


Thanks for posting the pictures. Keep up the good work and keep us posted!



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Windstruck


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[*] posted on 11-8-2019 at 10:08 AM


Love seeing this! Please keep us posted as this great looking buggy continues to progress.



Born-Kites:
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Randy


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[*] posted on 11-8-2019 at 05:05 PM


BTW - a youtube search of "Crab kite buggy" shows a lot of crab type designs. I had no idea this was such a popular buggy type. All were DIY from what I could tell. There was even one at Wildwood.



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Chook


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[*] posted on 11-9-2019 at 01:36 AM


Very well done.
Gotta love a bloke that thinks outside the square and repurposes what he has.

Look forward to the rest of the build.




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jantie


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[*] posted on 11-9-2019 at 03:29 AM


I knew this existed but cruising @ the internet on many forums around the globe and youtubless ofcourse got me inspired.
And having an old V-max and 3 bigfoot full size laying around for years helps a lot.

i hope to finish before the end of this year including a test-drive.


:cool::cool:






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[*] posted on 11-9-2019 at 07:33 PM


Great work! Looking forward to seeing the finished project.:thumbup::thumbup:
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jantie


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[*] posted on 11-14-2019 at 07:48 AM


made some serious progress this week:

pic 7: making the buggy seperable.
pic 8: just have to drill 2 holes M10 for the nuts and bolds
pic 9: alignment of the frontaxle
pic 10: made a shelter to stay dry and making sure that the dog's can't see the light from welding
pic 11: alignment of the hubs
pic 12: alignment of the frame before welding
pic 13:just looking how it's gonna look..
pic 14: found a used skateboard that will do just fine
pic 15: looks very nice with the seat put in.
pic 16: a happy hobbyman.

next week: steering and attachment of the frontwheels.

the gold and grey are spray-can leftovers.
when i'm done with grinding and welding it's gonna be painted black with anti-rust Hammerite

have a great (buggy) weekend

:cool::cool:






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[*] posted on 11-14-2019 at 07:11 PM


Wow you are really moving ahead rapidly. Must have put in some long hours.



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jantie


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[*] posted on 11-26-2019 at 12:53 PM


made a little progress:

pic 17
pic 18
pic 19
pic 20

being an outdoor-builder i'm hoping for more sun and less rain next week..







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[*] posted on 12-5-2019 at 09:54 AM


I must have missed this thread. Interesting project! Can't wait for the complete build and first run. Keep us up to date :thumbup:
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jantie


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[*] posted on 12-7-2019 at 07:11 AM


the story continu's..... :cool::cool:

contruction of the right wheelhub.
the left one is gonna be easier and take less time
because i just have to copy instead of desiging and measuring it 100 times
before cutting and welding..
the upright bar with al the holes is just for measurment and later on
used for the adjustable rail wich will hold the footplate.

pic 21
pic 22
pic 23
pic 24
pic 25


still hoping to test this Mad-Max Crab-creation before 2020,
but that's gonna be close.






crab design.png - 217kB






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[*] posted on 12-7-2019 at 03:09 PM


Thanks for posting the update. Looking forward to seeing it in action!



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[*] posted on 12-7-2019 at 03:59 PM


Coming along nicely:thumbup:
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[*] posted on 12-8-2019 at 11:41 AM


I hope to see you and your crabbuggy at Maasvlakte one time;)
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jantie


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[*] posted on 12-8-2019 at 01:37 PM


MV2 is fantastic indeed.

CU there ASAP.







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jantie


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[*] posted on 12-10-2019 at 09:25 AM



Made good progress today..
Produced the second wheelhub wich is a mirror-copy of the right-one.
The Crab is now all grown up to stand on it's own feet.. uhhh tires.

i'm really pleased with the outcome so far... :cool::cool:

pic 26
pic 27
pic 28
pic 29
pic 30
pic 31
pic 32
pic 33




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[*] posted on 12-10-2019 at 03:33 PM


It is really coming together. BTW - the links you have in your sig line show some pretty cool stuff.



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jantie


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[*] posted on 12-12-2019 at 09:14 AM



not being satisfied with the rear-wheel attachment i decided even before testing to change it,
this was also necessary for a better weight-ratio on each wheel.

before:
pic 1

after:
pic 34
pic 35
pic 36
pic 37
pic 38

next week the steering-axle's


@Randy: thanks






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[*] posted on 12-13-2019 at 06:31 AM


It looks like you changed wheels as well - the original was red.



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jantie


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[*] posted on 12-13-2019 at 10:58 AM


Quote: Originally posted by Randy  
It looks like you changed wheels as well - the original was red.


nope, those are the wheels of the kitebuggy and was just to see how it looked.






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jantie


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[*] posted on 12-18-2019 at 12:33 AM


next step for testrun complete: the foothboard

pic 38
pic 39
pic 40
pic 41
pic 42

it looks like i'll be ready for testing before 2020

angry-crab.jpg - 35kB






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[*] posted on 12-18-2019 at 06:07 AM


Your dog seems to think it is already perfect.

:)




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jantie


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[*] posted on 12-19-2019 at 09:39 AM


a little closer to the testride:
made 2 steering-axle's and reinforced the frame.

unfortunatly had to stop early because of the rain.
luckely my porch is big enough for parking and taking picture's


pic 43
pic 44
pic 45
pic 46
pic 47

testing in 2019 is likely..!! :cool:






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[*] posted on 12-20-2019 at 05:59 AM


This chariot is truly taking form. I've been loving seeing the progression through pictures. BTW, I agree with Randy, the seat appears to be perfectly "right sized". No need to continue beta testing the seat; go straight to production!

I have two nagging questions: first, how does the crab disassemble for transport and is that quite a labor of love; and, second, do the steering linkages do anything to aid or deter from the buggy rolling straight without input on the footplate?

I guess I'm wondering if the tendency is for the buggy to roll straight or will it turn one way or the other when left to its own devices. I see advantages and disadvantages to either occurrence. While riding I think I'd like a system that wants to go straight, but it sure would be nice if the buggy turned upwind if left unattended in high winds.




Born-Kites:
RaceStar+ (3.0m, 5.0m, 7.0m, 9.0m, 11.0m, 14.0m)
RaceStar (5.0m, 9.0m, 11.0m)
NasaStar-4 (2.5m, 4.0m, 5.5m, 7.0m)
NasaStar-3 (custom 3.2m)

Buggy:
Peter Lynn BigFoot+ nose & tail; midsection VTT rail & seat kit; home-brewed AQR

NAPKA Member US2815
SWATK Member UT0003
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jantie


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Mood: In a windy race mood.

[*] posted on 12-20-2019 at 10:58 AM


@ Windstruck: on pics 7 and 8 you can see where i can 'split' the crab.

and as for the handling and wether or not the buggy goes in a straight line when i lift my foot of the board and if the buggy will turn when i want to...
i've looked up every video and photo about a crab buggy and been reading on several forums
building-story's from people who build a crab and hope i didn't forget anything.

guess i'll have to wait and see @ the test.. :cool:






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[*] posted on 12-20-2019 at 11:30 AM


Please video the test if possible. I'm anxious to see it and think others are as well. I'm pretty impressed with what you have done. How did you design it? That must have been a job in itself.



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jantie


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[*] posted on 12-20-2019 at 01:13 PM


like i wrote:
Searched for as many footage of other builders, mix it up and add my own flavour and knowledge of 15 years of
buggying to the recepy and pray for a perfect outcome...








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jantie


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[*] posted on 12-24-2019 at 09:04 AM


the stage of trying my creaction has come, it was crappy wheater but
i am ready for testing the Crab.

it has become a little obese-crab since the scale gave a number slightly over 62 kg.
but my regular buggy with side-ride weighs 74 kg and that's without a passenger.. :cool:


finished the steering today and tryed if it would fit on my Fiat Seiccento.
i allready made and imperial for the kitebuggy but this one fits even easier.

and to make some nice footage i bought a new actioncam.

20191224_100537.jpg - 175kB


20191224_144259.jpg - 210kB


20191224_153508.jpg - 199kB


20191224_153517.jpg - 222kB

20191224_155200.jpg - 190kB

nikkei-extreme-x6s-action-cam-zwart-8712837875387.jpg - 149kB






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jantie


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[*] posted on 12-27-2019 at 05:24 PM


and the first testrun is a fact:
handles perfectly, goes straight in a line when i lift my feet
of the board but also corners if i want it to.. :D
it was a little getting used to since the many km-ers i made in a 'normal' kitebuggy but i adjusted quite easely.
the only thing i am going to adjust is the setting of the board so the steering wil be a little less progressive, but not much...

and ofcourse i recorded the try-out:



upcoming monday the second run with other footboard setting.






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