Road Unicycle Set-Up and T7 Handle Modification

OK, I will do that…

i agree with you on the point that bolted frames are less stiff although i dont think it will become a problem its designd in such way that i get optimal stiffness

looking forward to see your 2 kh 29 frames togheter

question for jeremy R
what is your plan just a handlebar setup or a v-frame

Sander, looks nice! The bottom part of the frame (below the V) looks rather rigid. Are you sure that the slot, and the width of the parts next to the slot, allow enough movement to clamp around the bearings?

And, to place the wheel, you have to bend the two V-shapes (left and right) outwards, right? Does the stiffness allow that, or would you have to loosen some bolts at the top (which I couldn’t see but I presume they are there)?

Wow, that’s really nice.

I’ve been thinking a little about the adjustment aspect of the V-frame. I’ve found that I’m not needing the height adjustment as much as the reach adjustment. Have you thought using the top tube as the stem/handlebar clamp instead? Similar to what I did with 7-shift?

Ken

just a little bit of dutch for klaas i can explean it than a little bether for him:

hey klaas, het lagerhuis in inderdaad 1 geheel
door de gleuf die er in zit kan ik het lager klemmen.
dit rondje word door de cnc freesbank precies op 42mm gefreesd en moet dus al een goede passing zijn op het lager

for to place the wheel:
its an al bolted design so although you can not see it on the picture everything gets bolted on
part list:
2 bearing house
4 frame legs
2 connectors of the legs

i started today on milling out the legs
while i’am typing its still milling out:D
just made a fast picture of how it was lookinh when i left:

as of the question gizmoduck
i dont plan to use the top tube as stem/ handlebar

with a shifable stem i can ajust the distance plenty i think

Wow! I can’t wait to see how it turns out. Would a manufacturing process like that be more or less expensive than the traditional welded tube frames? Have you ever machined out a unicycle frame before?

i too cannot wait to see this finished product!!

if it turns out well i am sure you would have no problem finding people who would be willing to purchase some of those :wink:

although the manufacturing process of tube frames is alsow expensive to set up mostly because you need a good mall to weld the frames in (to make it straight not bend)

this kind of machining is alsow way to expensive for production
i’am just lucky to have acces to this machine

i have not machined out a unicycle frame like this before but i do have much experince with handlebar setups
almost 2 year of riding and adjusting my ‘‘large’’ handlebar
alsow i modified some other frames that i own

i’am not looking for people to sell this type of frame at the moment
although if this first frame comes out good there is already a plan to make the second for a test if the bearing holders work good on a schlumpf hub
that test will be done by Dustin Schaap because he is lucky to have a schlumpf hub and is living in the Netherlands as well :roll_eyes:

alsow i only have 3 weeks of acces to this machine and then it will become harder to find time to make a frame

my excuse for bad englich its not my first:o

update on v-frame

just a little update on the procces of my v-frame

first the bad news
the main engine brook down yesterday of the cnc mill
so the engine was taken of today and shipped to the factory to be made
i dont expect it to be back before friday or monday

this puts my deadline sharper for making the frame and even more for a second frame

some ‘‘good’’ news
made today my tube where the seatpost goes into and the tube where the handlebars come in to.

pictures:

the inside diameter is for a 27.2 seatpost

http://www.unicyclist.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=587190&g2_serialNumber=2&g2_GALLERYSID=89a91826f1e50b89e23a0853c67f73a8

the inside diameter for the handlebar is 22.2 (normal stem diameter)
the outer diameter is smaller than off the seatpost tube only not at the bottem just to safe weight

hoping to be able to finish this frame at the end of next week

edit:
seems like i can only put one picture in a post?

Where are the pics of Turtle’s frame? :wink:

Booooom:

(my kh/schlumpf wheelset ist not ready yet, thats why it is just an ordinary kh wheel)

Thats nice, it just needs a powdercoating now and this thing is ready for the road (and dirt)

Looking good there Turtle. Aluminum welding has always been a bit of a mystery to me . . . I have heard that if one wants to bring the frame back up to its original strength, you would need to heat-treat the entire frame after welding on it as you did. Curious if you are going to heat-treat the frame again or ride it as it is??
Brycer1968

thats looking good;)

only the top pice that goes around the tire looks fat to me
already thought of drilling holes?:smiley:

it will be stiff enouf and you can safe some good weight

even more stimulatian to finsih my frame soon;)

Good stuff turtle but I would be a bit concerned with the bridge part being flat and curved like that. Seems to me like if you put enough spreading force between the saddle and handlebars it could flatten out that bridge ever so slightly putting stress on your join at the bearing housing. I would not be so concerned with a steel frame but aluminum does not like going through stress cycles as much.

I would be tempted to add a tensioned cable just above the bridge so it only really has to deal with compression forces.

That thing does have awesome stand over clearance, I wonder what it would be like to mount it from inside the frame.

Wow, now that’s a pretty sweet looking V frame. Have you had a chance to ride it yet? How does it feel? how stiff is it?

ARgh!!! You beat me to it.

This is almost what I’m doing next week. I have spare KH36 frameset. I’m modifying it into a V-frame. but it won’t be by welding it to another KH frame. I’d prefer the length adjustment, so won’t be using a second seat-tube…just a long top-tube to bolt the stem onto. Like my 7-shift.

Ken

@gizmo: that was why i was rushing…:wink: about adjustments: i’ve got 7cm with the saddle (forwards or back) on the rail and with different stems there are lots of possibilities. i think for road riding that’s enough, if you use a brake. for XC we’ll need something different.

here is my X-version with a “kh” handle :wink: i’ll try it tommorrow on a real XC track (uphill and downhill offroad)

i messed around today a little with this setup, for xc it’s pretty hard, because i’m not used to the bike seat.
so i made a saddle out of a cf base and foam and cover from a freeride saddle.
when i tried that, it was much better but i felt that it’s to wide in the front, my legs rub on it.
so i want a almost flat saddle which is not that wide in the front, but which has a handle in the front, so i dont need an other one…

anyway, tomorrow i’ll test the setup (in XC as i said)with this cf-base-freeride saddle with the normal handle

i really liked your race setup
clean no things stiking out

then your xc setup
the front part i like but that extra handle no thats just to much:p
i know your alsow just experimenting things;)

hope to see some more creations from people around here