Retrobike Forum Index

It is currently Mon Dec 05, 2016 5:28 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 29 posts ]  Go to page 1, 2, 3  Next
Author Message
 Post subject: 46er for MiniKen
PostPosted: Mon May 18, 2009 1:17 pm 
MacRetro rider
MacRetro rider
User avatar

Joined: Fri Mar 09, 2007 2:11 pm
Posts: 8700
Location: DUNDEE
Just thought I'd start a thread for my son's new bike, it is a bit different and would be interested in hearing from anyone who has done this before.

I'm making a 46er - 24inch rear with a 26inch front, it looks like it will work from my first mock up, but I'll need to get a rear wheel and fit the forks properly to be sure.

I spend sunday morning stripping the frame and with the intension of a respray, but it looks great naked.

Image

Ive used a 26inch rim without the tyre to get an idea on how it will sit but the angles are looking ok.
I get the actual forks this week (orange F7s) Image

and will polish the frame and let miniKen Design the decals for it.

Image

The frame is a 2005 Specialized Hotrock 24 and it is pretty light and very well made, the welds are lovely.

My intention is to build a bike that is as light as possible for a reasonable amount of money.

Spec so far....
Orange F7 forks
XT rapidfire+ brakes
Front is an Alivio Parallax on an Alex rim
Fuji 150gm bars with bontrager foam grips
STX derailuers
HG70 Cassette
Tioga Avenger headset.
XT hollowtech BB - if I can find shorter cranks!

He won't be getting the Use post, Turbo seat, or Kooka stem! But he might get hope XC hubs, depending how I feel about wheel building.


Last edited by The Ken on Fri Mar 05, 2010 5:10 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Mon May 18, 2009 1:37 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Wed Aug 22, 2007 12:23 am
Posts: 15608
humour me but what is the thinking on the different size wheels- pro's con's?


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 18, 2009 1:43 pm 
MacRetro rider
MacRetro rider
User avatar

Joined: Fri Mar 09, 2007 2:11 pm
Posts: 8700
Location: DUNDEE
He isn't big enought for a full 26 inch bike yet and the suspension available for 24'' kids bikes is sheng, unless you spend well over £100.

So taking inspiration from late 80's small frame Cannondales and modern 69ers I came up with the 46er :)

I like different as long as it works.


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 18, 2009 4:11 pm 
retrobike rider
retrobike rider
User avatar

Joined: Tue Nov 11, 2008 12:28 pm
Posts: 4179
Location: rutland
i cant find a pic of it without the crap cranks

Image


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 18, 2009 4:25 pm 
MacRetro rider
MacRetro rider
User avatar

Joined: Fri Mar 09, 2007 2:11 pm
Posts: 8700
Location: DUNDEE
Perry is that a frame designed for 26 or 24inch wheels? as those forks look mighty long. At least I'm not doing anything too unusual. I was going for a trials/jump type look for him.


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 18, 2009 5:06 pm 
retrobike rider
retrobike rider
User avatar

Joined: Tue Nov 11, 2008 12:28 pm
Posts: 4179
Location: rutland
has removable v mounts for both

forks are 435mm axle/crown

you get less rotating weight so it accelerates quicker and a stronger wheel as its physically smaller . sometimes you get more mud clearance ( but not always , look at reanimations )

itl slacken all the angles unless you use a large volume tyre . 2.6 or 3.0 that makes the circumference similar to a 26" but weighs a lot and you lose all the benefits except a much smaller chance of bashing the rim

i had a mate who used a 24 on the front and a 26 rear with a big tyre , more cushion for the wrists but looked odd :lol:


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 18, 2009 9:18 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Fri Jan 30, 2009 10:04 pm
Posts: 8771
Location: scotland
whats your plans for a rear brake ? would a u brake fit in there ?

looks alright , i like :D


Top
 Profile  
 
 Post subject:
PostPosted: Fri May 22, 2009 4:10 pm 
retrobike rider
retrobike rider
User avatar

Joined: Mon Apr 30, 2007 12:31 pm
Posts: 2482
Location: ManchestOr
Yeah have a look at my Last Rufus thread, 2 bikes wearing 24's in there.

I was chatting to a chap in bike shop, bit of a downhill nut. Made a lot of sense of running a fatter tyre on the back really as he suggests, but also have a look at MotoX bikes and stuff good enough for them this combo.

I never got on with my 24's but that was more to do with the package of the bike i think.

An inventive solution to a kids bike brief this. perhaps a 2.35 light tyre on the back might not be too much and thinner on front.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Oct 18, 2009 9:16 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Wed Aug 22, 2007 12:23 am
Posts: 15608
Any progress on this wee beastie yet TK?


Top
 Profile  
 
 Post subject:
PostPosted: Tue Oct 20, 2009 8:58 pm 
MacRetro rider
MacRetro rider
User avatar

Joined: Sat Jan 05, 2008 11:58 pm
Posts: 4434
Location: Third stone from the sun.
Look's like a great project ken, that frame should polish up nice 8)

clockworkgazz wrote:
humour me but what is the thinking on the different size wheels- pro's con's?
8)

There was a version of the Specialised Big Hit that used a 24" rear wheel, not sure why though but i was thinking of getting one and using 24's front and rear for more standover height (they tend to be quite tall), seen one like this on E-bay already, with 24"x3" tyres front and rear it looked like a beast :twisted:


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 29 posts ]  Go to page 1, 2, 3  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group