Cool deal. My first bike was a GT RTS-3, same basic design. Man, I loved that bike; I might have to blow the dust off it and enjoy the sweet 2" of 1994 travel.
should i build this frame?
- Thread starter dirtdigger
- Start date
does your chain rub on the chainstays?
No. 8 all the way! Nice ride Kiwi!
yeah i hear you man, i was going to run a brace from the pivot to the down tube but it looked a bit wrong in the way it went around the shock so put it in lower than what i wanted, i guess time will tell?
the load from the pivot pushes into the frame so yeah?
by the way i look at it is that distance from the swing arm pivot and cahin stay pivot is about half the lenth of the swing arm so the load at the pivot will be double whats at the hub, about 340kgs of load at the pivot from me 85kgs and a 4G gout .....blah blah....
and yes the chian dose rub the chain stay just a little in the last gear,
it dose make a nice ting, tingtttting sound comming down the track tho! haha
ok have had it powdercoated and all built back up.
and so far the thing is going very well!
and so far the thing is going very well!
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I have a question:
Do you find that the chainstay pivot is absolutely necessary? I remember the old Sunn's had a very similar setup, but the swingarm is triangulated, rather that split like that. I'm just curious, because it may add a little bit of stiffness if it's not.
Do you find that the chainstay pivot is absolutely necessary? I remember the old Sunn's had a very similar setup, but the swingarm is triangulated, rather that split like that. I'm just curious, because it may add a little bit of stiffness if it's not.
on second thought, you do need the lower link. The Sunn had a scissor linkage instead of the solid link. You could go either way. Great design.
yeah i have been thinking of just letting it flex as it dose move bugger all untill the last bit of travel
maybe change the rocker setup to suite?
maybe change the rocker setup to suite?
what is with the crafty-ness of you new zealanders? i've seen so many cool homebuilt bikes (among other contraptions) come out of that country.
nice work, btw. specs & configuration are nearly spot on for my personal wish list. looks like a fun ride.
nice work, btw. specs & configuration are nearly spot on for my personal wish list. looks like a fun ride.
clap clap! that's really good, how did it come in weights? and how is it holding up? did you use steel to build it? or was it Alu? what's inside your boxxers, cause it defenitly doesn't look like your typical boxxer, and last... have you thought about putting a bigger roller wheel on the frame in order for it not to rub on the last gear?
Thats hot.
While it sure is close, I think the problem was on the lower chain hitting the chainstay. (I could be wrong)
That said, a slightly larger idler cog would do a lot to help drivechain efficiency. Small cogs used like this gobble up efficiency.
the frame weight with idler and idler guide and with out shock is 9.25lbs, made from 4130n.
the fork is an 04 race with u-turn spring in one side and stratos id in other side.
and yeah will play around with idler size later on, had no idea what size to run so just took a stab in the dark , seems good as is
that's sweet, nice job.
so MS paint really is a decent app for designing bikes!
Congratulation - bike looks great.
The bike is pretty BA. Even moreso since it was designed in MS paint. 
There is no matter where you make your first idea of the frame. You can even draw it on the sand with you finger. But after that you have to draw it on a paper with all dimensions and consider where to put the pivots for the best performance. If the pivots are in an incidental places I don't think they are in the good places. IMHO even 1 mm make a difference if you are looking for the best performance. But the frames looks good and great job.
That is freakin awesome! I can't believe you drew it in Paint and then went and made it!
If i'm ever out that way, Brews on me
If i'm ever out that way, Brews on me
That is soooo hawt dude
haha i thought i was being quite innovative using a computer to help with my designs
yeah i could make it lighter but not at the expense of stiffness.
if i had the resources and gear i could do much more to improve it thats for sure.
working on making some changes to the design, not too much tho just some tweeking.
yeah i could make it lighter but not at the expense of stiffness.
if i had the resources and gear i could do much more to improve it thats for sure.
working on making some changes to the design, not too much tho just some tweeking.
how is the lateral stiffness? does it flex? should bigger bearings hold more force? have you though about bushings? this is a sweet proyect, if they come out good, maybe you should make some!
Wait till you see the next one...
Great job bro,Keep it up.
Good thing we never took a picture....Wait till you see the next one...
I can't wait.
Dirtdigger - any plans to get that thing out there? You obviously have some talent.
throw us a bone!Good thing we never took a picture....
I can't wait.
That frame looks very fast and fun to ride!
May I ask what wall thickness you used on the top and down tube?
Thanks
May I ask what wall thickness you used on the top and down tube?
Thanks
me? got talent? haha well i guess so.Good thing we never took a picture....
I can't wait.
Dirtdigger - any plans to get that thing out there? You obviously have some talent.
yes i do have plans to get "that thing" out there.
just working on getting set up to make a limited number of frames.
i kinda knew when i started to build this frame it was going to be good, but it has come out really dam good, people are realy impressed when they see it,bikers and thoes non biker types as well.
That is freakin' unbelievable!
How long did it take to build?
How long did it take to build?
from when i had some kinda design to having someting to ride was 1 month.
i mitre the tubes by hand with a electric file (grinder), search on youtube you might find something?
i'm super stoked with peoples comments, thanks loads!