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socialtalker
12-01-2010, 05:00 PM
hello, i have been meaning to ask this question, but kept putting it off. but its finally time for me to cut my metal, so i cant put it off.
my cargo frame will be 3 by 2 feet instead of 2by2. i would like the move the pillow blocks for the axle to the middle of the cargo frame instead of at the beginning as it is showed in the plans. however in reading about the support tube for the inner bearing support plate requires the tube cut at an 45 degree angle. (pages 57-61)
but if i move my pillow blocks midway to the frame, and keep that 45 degree support tube angle, i dont see how the inner bearing plate could meet it. do i have to keep that 45 degree angle?

Radical Brad
12-01-2010, 08:56 PM
You are going to have to make your best guess on the correct angle and just work backward, cutting a longer tube than you need at first.

Brad

socialtalker
12-01-2010, 09:35 PM
Thanks Brad! i was just worried if i changed the angle i would weaken the structure somehow.
its a relief to know that wont be the case.


You are going to have to make your best guess on the correct angle and just work backward, cutting a longer tube than you need at first.

Brad

SirJoey
12-02-2010, 10:01 AM
i was just worried if i changed the angle i would weaken the structure somehow.Actually, it will, but prolly not significantly.



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socialtalker
12-02-2010, 02:41 PM
really? how does it do that? is there a way to make up for it?
what if i put truss-like thingys on the support tube, will that help?
thanks



Actually, it will, but prolly not significantly.

SirJoey
12-02-2010, 04:37 PM
really? how does it do that? is there a way to make up for it?
what if i put truss-like thingys on the support tube, will that help?Your support tube will be longer (longer = weaker), & it will also be angled slightly closer to a horizontal position (which = weaker).
Additionally, moving your axles farther back means a longer wheelbase (weaker). I'm no engineer, but I seriously doubt it will make
enough of a difference to matter though, unless the weight of the rider & cargo are already pushing the structural integrity of
the frame to the limit. At most, my guess is, your mods may introduce a tiny bit more frame flex. Not a big deal, IMO. :)



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socialtalker
12-03-2010, 02:52 AM
"unless the weight of the rider & cargo are already pushing the structural integrity of the frame to the limit"
thanks for responding sire joey.
i am afraid that might be the case. how about i dont change the angle or the length of the support tube but weld support beams out to the center and weld the tube on that?
i think the wheelbase will be about 5.5 feet.
was your cargo frame 3by2 sir joey? by the way, how well did it turn corners at if it was 3 by 2?



Your support tube will be longer (longer = weaker), & it will also be angled slightly closer to a horizontal position (which = weaker).
Additionally, moving your axles farther back means a longer wheelbase (weaker). I'm no engineer, but I seriously doubt it will make
enough of a difference to matter though, unless the weight of the rider & cargo are already pushing the structural integrity of the frame to the limit. At most, my guess is, your mods may introduce a tiny bit more frame flex. Not a big deal, IMO. :)



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SirJoey
12-03-2010, 08:06 AM
how about i dont change the angle or the length of the support tube but weld support beams out to the center and weld the tube on that?That sounds like a pretty good option to me. Maybe the following pics of how I did mine will give ya some ideas.






i think the wheelbase will be about 5.5 feet.
was your cargo frame 3by2 sir joey? by the way,The cargo box area on mine is a little larger than the plans called for, to accomodate the cargo box I used,
as well as the battery box. I'll get back to ya with the specific size if ya want, after I get a chance to measure it.






how well did it turn corners at if it was 3 by 2?I'm real happy with it!

FWIW, here's a sneak-peek at the underside of mine. I wanted to keep that 150 lbs of batteries directly over the axles.
Also, having the cargo box area hanging out in the back like that, keeps my wheelbase a little shorter, too.

http://img42.imageshack.us/img42/8864/dsc05149o.jpg

http://img42.imageshack.us/img42/9961/dsc05148r.jpg

http://img823.imageshack.us/img823/4775/dsc05146x.jpg

Hope this helps! :)



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socialtalker
12-04-2010, 10:43 AM
thanks very much, sir joey for posting those pics and responding. you dont need to bother measuring anything, it looks like 30 inches. i made a boo boo, starting this topic, asking this question, because i have just read the thread "axle and bearing" and jayray pretty much does the support tube on a center support i asked about? lol. i have to remember to check out this site better. one last question, if you dont mind. i see you carried a 150 lbs worth of batteries, thats what, 3 batteries? how many watts did they carry and what kind did use? i want a battery, but not for a motor. thanks

Radical Brad
12-04-2010, 02:00 PM
That is one nice frame!

Brad

SirJoey
12-04-2010, 05:33 PM
thanks very much... i see you carried a 150 lbs worth of batteries, thats what, 3 batteries? how many watts did they carry and what kind?You're very welcome!

4 batteries, 50 AH each! The biggest, baddest ones they had!
These: http://www.electricrider.com/batteries/eb50-12i2.htm






That is one nice frame!Thanx a bunch, Brad! WHOLE lotta work went into THAT one, dontcha know!
Always nice to get a compliment from THE MASTER! :D




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savarin
12-04-2010, 09:34 PM
how long before "things" are bolted on?
I'm intrigued by all the tabs.
This nosey old fart wants to know.
Looks good.

SirJoey
12-05-2010, 09:24 AM
how long before "things" are bolted on?
I'm intrigued by all the tabs.
This nosey old fart wants to know.
Looks good.Charles, those R just old, pre-assembly pics of my
Bulldog (LodeRunner), taken nearly 2 years ago.
I just posted 'em to show SocialTalker how I did mine, thanx. :)




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BuskerDave
05-11-2013, 02:01 AM
I made my box 4 feet by 2 and added a center tube and welded my angle from it. I also noticed that with a lot of torque that I was pulling the center bearing support out of alignment. I fixed this by adding a second center support and another angle to give a triangular support to compensate for the added torque and this has fixed that problem and now my axle stays straight no matter how much torque I put it under. I did add an axle to the front of the box and made a chain driven differential that works great. I also made my loadrunner with motorcycle wheels.

socialtalker
05-11-2013, 11:19 AM
hello!
do you have pictures of this set up? i can picture your second center support. you said axle as in a singlar axle, do you mean 2 axles? you said you added a axle to the front. do you mean you have 4 wheels? and what is a chain driven differential? thanks for responding


I made my box 4 feet by 2 and added a center tube and welded my angle from it. I also noticed that with a lot of torque that I was pulling the center bearing support out of alignment. I fixed this by adding a second center support and another angle to give a triangular support to compensate for the added torque and this has fixed that problem and now my axle stays straight no matter how much torque I put it under. I did add an axle to the front of the box and made a chain driven differential that works great. I also made my loadrunner with motorcycle wheels.

BuskerDave
05-18-2013, 12:50 PM
This is the chain driven diff. and bearing support. I hope that this helps answer any questions that you may have.http://forum.atomiczombie.com/gallery/files/4/0/2/3/green_machine_1.jpghttp://forum.atomiczombie.com/gallery/files/4/0/2/3/green_machine_2_959286.jpghttp://forum.atomiczombie.com/gallery/files/4/0/2/3/green_machine_3.jpg

SirJoey
05-19-2013, 05:47 AM
Wow, that looks like quite the workhorse, BD! :)



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socialtalker
05-19-2013, 09:41 AM
thanks for taking the trouble to upload the pics, BuskerDave! your info is very important to me as i am using a samagaga differential and have been warned of the importance of keeping the axles in their supports. i had some ideas of how to do this, but yours is the better option because its based on experience and looks doable for me. also what you called the trans axle I heard called a mid drive. good, good. i once was going to use the middrive until i decided on a jackshaft to the samagaga diff. you also put a truss under the main boom, i am going to do that too. i would love to see how it moves. how often to you ride it. you must be a lot of second looks.
let me get out to do some work before it gets too hot and starts raining tonight.

socialtalker
05-19-2013, 02:28 PM
wait a minute, busker dave, where are your brakes??

BuskerDave
05-19-2013, 09:51 PM
I am using the hub brakes from the motorcycle wheels for now but I will be installing hydraulic disc brakes soon.
I am also thinking of installing a 212cc 4-stroke with a torque converter next month. I will be installing hub motors
linked to the trans-axle and then use the 212cc to run to a 350 watt alternator to keep the batts charged for the hub motors.
I am thinking of using Lithium Iron Phosphate or maybe Lithium Manganese Dioxide batteries and about 400 AH for a 72 volt output.
I will be making a full canopy with solar panels to about 370 watts of charging power.
Now this might just be a bit overkill but I just don't know when to quit.

socialtalker
05-22-2013, 12:25 PM
wow, that is a monster bike! or rather motorcycle? if i may ask what kind of load are you using it for?

BuskerDave
05-22-2013, 05:05 PM
Well I was making it so that I can travel the country and carry my tools and music stuff and camping gear and wheelchair.
I am in a wheelchair and am building it to be my home. I want it to be able to go off road and to climb steep inclines.
I am making it so that I can go several miles before I have to recharge the batts or from needing gas.
I can only peddle it for about 1/3 of a block before my legs hurt. I want it for exercise and to leave where I live.
My room mates are trying to control my life and take control of my money. I am just tired of being around people who are stupid.
If I am living on my bike then I can choose who I interact with and where I hang my hat for the night.
Since I get a disability check each month I would like to use it for traveling the country and enjoying life.
So why pay rent when I can go camping and fishing all across the country?

SirJoey
05-23-2013, 12:46 PM
Man, I like the way U think, BD!
I wish U luck in your endeavor! :)

Wot U describe is kinda wot I was hoping for after I lost my home last summer,
but unfortunately, I'm STILL 10 grand in the hole for my truck, & the camper I live in,
so traveling & enjoying life is still outta the question for quite awhile yet to come. :(



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BuskerDave
05-24-2013, 02:01 AM
I am thinking of cutting a 10 gal. air tank and make a BBQ to put on the back of the bike.
I used to live in a motor-home and travel the country but then my health made me get an apartment
but now I have even more bills than before. By living off the bike would lower my mandatory bills to about $120 a month.
With a full canopy, I will have sides that roll down to enclose the entire bike. Motor vehicle codes state
that there is no camping in your car but there is no laws against camping on your bike.