mon-goose to MON-STER

thanks Samd for the cad of 12 x 6s 5ah
file.php

Yeah just like that but the top 2 spaces used for beepers and or dc-dc converter. I like the other idea to with with a triangle frame but COG gets higher.
 
http://endless-sphere.com/forums/viewtopic.php?f=6&t=40120&start=50
Worth a look at batfink's build. Similar watthours.
 
heres a couple of preliminary drawings from google sketch (still havent installed solidworks)
30s monocoque bike1.jpg
30s monocoque bike2.jpg
messurements:
main box
513.5mm long
120mm wide
160mm high
634mm "down tube" (from bottom rear of head tube to front of bottom brack housing)
wheel base 1220mm
26" wheels
 
IS your frame design going to incorporate the bottom bracket and swingarm together? Or will your bottom bracket be attached to the frame?
 
Rix said:
IS your frame design going to incorporate the bottom bracket and swingarm together? Or will your bottom bracket be attached to the frame?
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I want bottom bracket on the frame and swing arm pivot just above the bottom bracket. Why do you ask? I did some research about bike suspension although I had pretty much made up my mind about it.
Dedighning the swing arm will be one of the more challenging tasks. I'll copy the mongoose 1 somewhat because it looks good and is functional.
 
Looking good, would be cool if you could put ca3 near the top of the frame inside. Also, incorporate the exact controller you will use so they don't look like added gadgets. Are you putting a top tube and seat tube or are you going to stand all the time? :D

How much space is needed to be give for swelling of the lipo?

I'd also think about having partitions dividing each cluster of 4. so the all the weight of the top 8 don't add so much pressure to the bottom 4. I think it would be safer. could just pop a few holes in it to pass cables.
 
John Bozi said:
Looking good, would be cool if you could put ca3 near the top of the frame inside. Also, incorporate the exact controller you will use so it doesn't look like an added gadget. Are you putting a top tube and seat tube or are you going to stand all the time? :D
Click to expand...
Lol get out of it bozi! Nah I'm not standing all the time, I'm not sure how to do the seat tube. I'll have to measure a nice stand over height and work from there so I can go as high as possible with the "top tube" for strength and the bottom bit of seat triangle maby finish in front of suspension, or over it to help strengthen the suspension mount on the frame. Also not sure if I'll use square tube or right angle for seat mount. I can buy square/rectangle ready to go so that's an appealing option.

Oh yeah the CA. Well I use it at speed in traffic so I don't mind it being on the handle bar. I may have a window for cell monitors though. That will be fun hear 5 of them turn on. BEEP BEEP BEEP BEEP angry robotic bird style.
 
something like this for swing arm ;) 8)
View attachment 2
View attachment 1
30s monocoque bike sa3.jpg
Yeah, Bozi the divisions is a good iea, i had thought of that, they seem to be ok with some padding at the bottom and some padding as dividers. but yeah definately something to consider. like bulk heads in an aeroplane wing. that would dive alot more strength, but would be a bit more complicated, maby just a single one dividing the bottom 2 or something.

I'm loving the CAD thing incase you guys can't tell :D . all those hours making levels of DOOM (3d shoot 'em up game) when i was 18 is paying off LOL the google sketch up software is prety easy to use though. i made these desighns in less than 24hrs of installing, whatever that means to you all considering my previous computer skills.

oh yeah btw i made the drop out horizontal obviously and 5mm holes to pinch the axle flats. 140mm drop out spacing. need dimension for derailer hanger (yeah im gunna spoil the look of it with derailer) and disc IS mount.

if only i could have it easily made from the desighn. so many edges to bend and weld... I'll be leting the F and C bomb drop big time the day I cut and weld this thing haha, oh well plan as much as possible i guess.

anyone see issues I've missed?
maby chain line.. i guess ill put a chain ring in and see how it lines up.
 
You've picked up sketchup very quickly! Many good plugins for free including dxf exporters, drill functions and 2d file exports for laser cutting.

Nice work.
 
dan974 said:
I'm pretty sure you can find a base file of a bike on sketchup, in case you can find some on grabcad...
medium.jpg

medium.jpg
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Hey is that Hyena's bling bike? (Jokes)

Thanks man, funny how you come through with gems like that and the IS mount.(that was you?)
I scraped the above swing arm. There was theoretically a clear path from large front chain ring to small rear but it was way to tight. I started again with a more simple and open desighn. Kept the horizontal clamping dropouts. I can see why stealth uses a single arm... soooooo much easyer. Just as long as it is really strong material.
 
looking much better now.

I might have to commision something similar. concentric though, because this is looking sweet for single speed. I'd ask for a fraction longer swing arm and wheel base with a smaller motorcycle rim, and a spring shock clean from the seat post area or even a longer mofo motorbike spring shock.

:mrgreen:
 
had a bit more of a play...
30s monocoque bike sa c4.jpg
i like the geometric benifits of the large triangle seat suport, it would definately add support to the frame where the side access pannel cut out weekens it. also generally stronger. although at first i though "man, that looks a bit frocked"... now ive looked at it for a while I don't mind it, especialy from an engernering perspective.
what do you guys think?
I'm kinda dredding stuffing all the lipo and shit in there when the time comes. i guess ill come up with something.
 
I like how your drafts are coming along, how soon before you start putting electrode to metal?

Rick
 
pendragon8000 said:
I'm kinda dredding stuffing all the lipo and shit in there when the time comes. i guess ill come up with something.
Click to expand...

Loading batteries through a small side opening is a pain in the arse. I like samd's open bottom concept
To just be able to slide in a complete battery pack , not seperate cells would be sweet
It also allows you to keep the frame thinner, by keeping wiring on top or bottom not on the side
Would be even better if batteries could stand vertical
Looks neater without side access panel too
Though you have more experince than me on this concept as monstamongoose loads batteries from the bottom

Just my 2 cents :)
 
Rix said:
I like how your drafts are coming along, how soon before you start putting electrode to metal?

Rick
Click to expand...
Thanks. It will be at least a few months.

deffx said:
Loading batteries through a small side opening is a pain in the arse. I like samd's open bottom concept
To just be able to slide in a complete battery pack , not seperate cells would be sweet
It also allows you to keep the frame thinner, by keeping wiring on top or bottom not on the side
Would be even better if batteries could stand vertical
Looks neater without side access panel too
Though you have more experince than me on this concept as monstamongoose loads batteries from the bottom

Just my 2 cents :)
Click to expand...
Yeah its nice looking with the plate underneath. I am sick of the extra time it takes to flip the bike and secure the plate.
But now that you've said it I'll reconsider it because YES it is pretty cool. If I set it up better I cooul have access to balance leads without opening it and a switch to turn on off the beepers.
 
Cheers Bill. That frame looks hella rugged. Did you make it? How much does it weight etc?
I need to design a swing arm I'm happy with, as far as chain line and geometric strength are conserned.
Also maby a wire access panel/s on top of battery box or something.
Just got my Alex rim and Holmes spokes. HUGE NIPPLES! Gunna dremel off the eyelets on the rim a la Dr Bass.
Then single cross lace with drive spokes on outside.
 
pendragon8000 said:
6 beers, 36 spokes and nipples
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That's a boss level of nipple to beer ratio, the likes of which you'd have to travel to summernats to top :lol:

Friday arvo fun the in park hey ? That dove at 2:33 didn't know how close to death he came :p
 
Hyena said:
pendragon8000 said:
6 beers, 36 spokes and nipples
Click to expand...
That's a boss level of nipple to beer ratio, the likes of which you'd have to travel to summernats to top :lol:

Friday arvo fun the in park hey ? That dove at 2:33 didn't know how close to death he came :p
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haha yeah he wouldnt piss off, it was hovering in front of me for ages.
was going to build wheel tonight but had a crazy day:
turned off alarm instead of hitting snooze then was a few mins late to work.
went to my great great auntys funeral this arvo.
got a flat battery out the front of the cassino on m=way to mums house after.
borowed gf's car to charge battery with jumpers
got car home and found the idle was way too low no even close to making the alternator charger the battery(marine trauler lead acid)

so yeah watching red bull channel on YT
should be a sick wheel when im done though. i'll leave it for sunday. still have to make a light for the scott spark and hook all that up.
 
Sweet video, some good woops, life is grand. Thanks for posting. Good to see the 6kw beast in action :twisted:

Rick
 
Hey, that frame design looks interesting, I'll be very impressed when you end up making it.

I have thought about designing my own frame, but there are a lot of technical stuff I don't really understand, especially the suspension. I'm guessing you are going to use a swingarm design similar to an existing downhill bike with a single pivot design and place the pivot in the same effective location on the frame.

All of the articles on mountain bike suspension talk all about the technical details between the different manufacturer designs, but have very little information on actual suspension design, frame geometry and things like pivot location (whether single pivot/virtual pivot (four bar) or otherwise). :(
 
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