front hub on the back wheel

[ido rosen]

masonmar thanks a lot for your help! I will take that into consideration.

in the meanwhile I managed to cold-set the dropouts (force them closer), and now I need to make them
parallel again, after I will finish I think that the outer width of them will be 119mm. it used to be 126mm so it's a significant change. I may still need a hub with a longer axle.

Thanks.

[ido rosen]

I calculated that I will have 9.5mm of threads inside the axle nuts (with pegs), is that enough?

Thanks.

[DaddyCool]

The spacing for BMX rear hubs is 110 mm, isn't it?
120 mm might be for single speed bike, I am not sure. Road racing bikes use 130 mm and mountainbikes 135 mm as far as I know.
So you need 5 mm on each side, that is not so much. I could imagine that it works with a femal hub (especially with longer bolts) and it should also work with male hubs with long axles.
But I never tried, so I am not sure.

[ido rosen]

Thanks DaddyCool.
yes, modern bmx frames are 110mm. mine is a Hoffman strowler from 2008, so maybe it's before the 110mm trend took over, i'm not sure.
anyway I will try different options, part of which you mentioned.

Thanks.

[DaddyCool]

Hm, strange... I have got frames from 1993 until now and all have 110 mm spacing. Not that I have measured all of them, but I used many hubs in several of these frames and besides of tolerances it worked in any combination.
Are you sure about your Strowler? Maybe it is bent.

[ido rosen]

I don't think it's bent because the dropouts were always 100% parallel. If it got bent then the dropouts
won't be parallel. besides, I never rode street with it.

But because you mentioned your frames I went to check two other frames I got and this is what I found:
Quamen delta 2004 (first generation with the 73 ht angle): dropouts 120.2mm
Hoffamn Sugar Baby 1997: dropouts 110mm.

Maybe i'm wrong but I think that there's some flatland frames which were made wider for easier adjustment for wider Freecoaster hubs. I'm not sure.

[DaddyCool]

The older Quamen frames are an exception because they were designed to run chain tensioners on the inside of the dropout. That is why they had a wider spacing.
I do not know about freecoaster hubs which are wider than 110 mm.
In the end it does not matter for your concern. You want something for a frame that is wider, that counts.
I think the idea with longer bolts for a female hub is the best.

[ido rosen]

your right DaddyCool, it doesn't matter.
and I did not knew that about the quamen frames, good to know.
but like you said earlier, I only need 5mm more.
tomorrow I will try to get the dropouts even closer.

By the way, how much mm of threads inside the locknut you think is enough?

Thank you 

[MICHELE]

i use a front wheel on the back on my intrikat frame, the one i have now has a male axle that is long enought to put two pegs on it's a cheap crc wheel the one i had before had a shorter axle and i could put the peg only on one side,


anyway i think that 5 mm of thread is enought.

[out~riding]

out~riding, I found the "formula flip flop hub" on some store not far away. couldn't find on google if people are using it with pegs or bmx. what do you think?

The Formula hubs are cheaper than the Origin8 but they don't come in 48 holes.

[ido rosen]

Thanks out~riding.

MICHELE, nice to meet another rear hub less rider 
Thanks on the 5mm tip.
I got a question for you, I used to put the cranks in certain positions for certain tricks, but now since there won't be a chain I guess the cranks will move (I have not rode chainless yet since my bike is not ready yet).
what do you do to keep them from moving?

Thanks.

[MICHELE]

i find that even if the cranks move it get less in the way because without a chain in moves very easily and you don't get stuck on it but,
 if you want them to stop moving you can remove one crank arm and put a o-ring or a handgrip flange on the spindle and then put the arm back.
 

[ido rosen]

Wow Thanks! that's a really good idea.

[ido rosen]

Quick update.

I managed to get the frame dropouts a bit closer, now the spacing is 105mm and the width including dropouts thickness is 115mm.

I think that I can use a front hub as long as its axle is at least 160mm long.

[a08]

has someone suggested running a rear whee with two piece driver, but with no cog? or is the symmetrical look the point?