N55 Spaceframe Vehicle New Style Recumbent Help!!!
Posted: Wed Nov 30, 2011 10:23 pm
N55 SPACEFRAME VEHICLES
I have been bitten by the Bent Bug, I think with all the research I have been doing my wife thinks that I am up to nefarious deeds on the computer.
I love the concept of the N55 Spaceframe and the you tube video is awesome. Upon costing the build and reading the plans it left me with a few questions that I should get answered before I start the project.
(I cannot find a N55 forum) (I have also emailed the N55 group with no luck)
from the web site
Single person trike type dimensions:
Frame length: 1.5 m
Frame weight: 8 kg
Some links so people know what I am talking about....
What they call a manual is actually a series of pictures with a link on the page to the actual manual
http://www.n55.dk/manuals/spaceframeveh ... icles.html
the drawings for the single recumbent type (read pdf plan)
http://www.n55.dk/manuals/spaceframevehicles/DIY.pdf
Video - halfway though he takes it to the streets - It is really cool!
page 4 of the manual has a very inaccurate parts list, In fact I think it might have been the designers shopping list accidentally left on the drawings
The parts list also might have been for the extra long recumbent that they show but do not provide plans for. (it would be easy enough to extrapolate from the photos)
Adding up all the lengths of 25mm x 2mm aluminum tubing I get 11 meters not 20
Also I get the following bolt numbers... (way less than they are suggesting)
12x (6mm x 90mm)
38x (6mm x 60mm)
12x (6mm x 40mm)
8x (6mm x 30mm)
70 nuts and 140 washers
Disclaimer (my bolt numbers might be wrong as it is hard to tell late at night counting dots on a plan)
My questions fall into a few categories and any help would be awesome!!!
The front crank hub?
I can see how it is bolted in but there is no mention of what the hub is called, where you can get one etc. It does not look like a standard part that you can buy and bolt in.
There is a mention of a crank box but google does not help. I am thinking of cutting out a bottom Crank from a normal bike and fitting this in. Do you think this would work?
Also how many teeth does the crank wheel have? I might be able to count the teeth from the photo...
Wheels
600mm and 700mm wheels - I am familiar with inches and 700c but when it comes to straight 600mm and 700mm I don't know what they are talking about. To make matters worse looking at the photos it looks like the front and back wheels are the same size. AaaaaHhhhhh!!!
Larger BMX bike = 24inches = 60.96 cm - front wheels?
The standard Road bike is 27 inch = 68.58 cm - Rear Wheel?
Does anyone think these are the correct dimensions they were referring to?
I am wondering if I can get standard rear mountain bike wheels and center the hub or should I buy some new purpose build hubs and build them into an existing wheel. Any suggestions and links?
(I used to build bike wheels as a kid, I could hardly afford clothes let alone a new bike and the panniers for the paper round were hell on the rear wheel of any bike. So rebuilding a wheel is no biggie for me and I still have the spoke tools and the wheel vice) 25 years later I have only just now heard of courier wheels - A wheel that does not buckle under heavy loads sounds like cheating to me.
Steering
In one place they are referred to as self-greasing plastic washers, on the part sheet you refer to them as just 23.50 mm Ø plastic washer.
Do you think they mean nylon washers? and if so what is the thickness do you think is needed? Anyone know a good web site on this type of bushed steering?
It looks like a bolt straight through the aluminum. This cannot be too good for wear and tear. 1 long ride and the bolts would break and the holes would get routed out to a bigger size and get sloppy.
I found a aluminum place in Dandenong that sells the 25mm x 2mm tubing for $45 including gst for 6.5meters. This makes the build quite cheap and allot of fun!
(spell checker wants to change Dandenong to dandelion. (ok so its late and I think thats funny)
Thanks in advance for any help or advice!!!
Ps anybody had success with unicycle wheels on the front of a tadpole trike?
PPs I have hard rubbish in my area at the moment so a quick reply would help scavenging parts. Smile...
Kind Regards
Wayne
I have been bitten by the Bent Bug, I think with all the research I have been doing my wife thinks that I am up to nefarious deeds on the computer.
I love the concept of the N55 Spaceframe and the you tube video is awesome. Upon costing the build and reading the plans it left me with a few questions that I should get answered before I start the project.
(I cannot find a N55 forum) (I have also emailed the N55 group with no luck)
from the web site
Single person trike type dimensions:
Frame length: 1.5 m
Frame weight: 8 kg
Some links so people know what I am talking about....
What they call a manual is actually a series of pictures with a link on the page to the actual manual
http://www.n55.dk/manuals/spaceframeveh ... icles.html
the drawings for the single recumbent type (read pdf plan)
http://www.n55.dk/manuals/spaceframevehicles/DIY.pdf
Video - halfway though he takes it to the streets - It is really cool!
page 4 of the manual has a very inaccurate parts list, In fact I think it might have been the designers shopping list accidentally left on the drawings
The parts list also might have been for the extra long recumbent that they show but do not provide plans for. (it would be easy enough to extrapolate from the photos)
Adding up all the lengths of 25mm x 2mm aluminum tubing I get 11 meters not 20
Also I get the following bolt numbers... (way less than they are suggesting)
12x (6mm x 90mm)
38x (6mm x 60mm)
12x (6mm x 40mm)
8x (6mm x 30mm)
70 nuts and 140 washers
Disclaimer (my bolt numbers might be wrong as it is hard to tell late at night counting dots on a plan)
My questions fall into a few categories and any help would be awesome!!!
The front crank hub?
I can see how it is bolted in but there is no mention of what the hub is called, where you can get one etc. It does not look like a standard part that you can buy and bolt in.
There is a mention of a crank box but google does not help. I am thinking of cutting out a bottom Crank from a normal bike and fitting this in. Do you think this would work?
Also how many teeth does the crank wheel have? I might be able to count the teeth from the photo...
Wheels
600mm and 700mm wheels - I am familiar with inches and 700c but when it comes to straight 600mm and 700mm I don't know what they are talking about. To make matters worse looking at the photos it looks like the front and back wheels are the same size. AaaaaHhhhhh!!!
Larger BMX bike = 24inches = 60.96 cm - front wheels?
The standard Road bike is 27 inch = 68.58 cm - Rear Wheel?
Does anyone think these are the correct dimensions they were referring to?
I am wondering if I can get standard rear mountain bike wheels and center the hub or should I buy some new purpose build hubs and build them into an existing wheel. Any suggestions and links?
(I used to build bike wheels as a kid, I could hardly afford clothes let alone a new bike and the panniers for the paper round were hell on the rear wheel of any bike. So rebuilding a wheel is no biggie for me and I still have the spoke tools and the wheel vice) 25 years later I have only just now heard of courier wheels - A wheel that does not buckle under heavy loads sounds like cheating to me.
Steering
In one place they are referred to as self-greasing plastic washers, on the part sheet you refer to them as just 23.50 mm Ø plastic washer.
Do you think they mean nylon washers? and if so what is the thickness do you think is needed? Anyone know a good web site on this type of bushed steering?
It looks like a bolt straight through the aluminum. This cannot be too good for wear and tear. 1 long ride and the bolts would break and the holes would get routed out to a bigger size and get sloppy.
I found a aluminum place in Dandenong that sells the 25mm x 2mm tubing for $45 including gst for 6.5meters. This makes the build quite cheap and allot of fun!
(spell checker wants to change Dandenong to dandelion. (ok so its late and I think thats funny)
Thanks in advance for any help or advice!!!
Ps anybody had success with unicycle wheels on the front of a tadpole trike?
PPs I have hard rubbish in my area at the moment so a quick reply would help scavenging parts. Smile...
Kind Regards
Wayne