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Technical & Reference Section => Tech and Restoration => Topic started by: Gal on February 24, 2013, 10:37 PM

Title: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 10:37 PM

Hi ya. I'm hoping you know more than me about different BMX frames etc. Building mine up which is 90's Mongoose but want a mix of new school gearing along with old school bits. Just bought some forks off my mate, but now am home realised I had forks for the A heaset system, where as these are for the screw in type, with a shorter head tube ( guessing because it hasn't got to fit past the bar clamp ) PLUS its smaller in diameter. Could I get this to fit at all? Different fitting etc?, Plus will need a bar clamp too. How do they fit?

Should have checked before hand I DUH!
As to the crank and smaller new school gearing I guess I will have to change the rear wheel as you cannot get an adapter to put on the smaller sprocket?

Also with the older solid 1 piece cranks they had the bearing in cages ( well mine did once, took it apart and it had rusted away to nothing!! ) Newer 3 piece ones have sealed bearing now? Easy to switch over?

I sound thick ( ok...I am  :buck2: but I used to have a great Mountain bike I built myself back in the 90's with some 1 off components, like titanium suspension forks ) but once I get the hang of it I can do most things
Gary

Title: Re: Mid school to old school plus new school! Differences???
Post by: bobbbbsy on February 24, 2013, 10:45 PM

so you wanna use old `1 inch threaded forks on a frame that takes 1 1/8 unthreaded forks ? got some adapter cups i can flog u for a few quid but you ll need a new headset to !

how many teeth on your chainwheel ?

Title: Re: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 10:47 PM

Cool how much?

Yep I know I'll need a new headset, but what am I looking for?

Title: Re: Mid school to old school plus new school! Differences???
Post by: bobbbbsy on February 24, 2013, 10:51 PM

i dunno if it ll look right with your build. tell us more !

Title: Re: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 11:09 PM

Its this one

Trying to find out what model it is on bmxmuseum

Title: Re: Mid school to old school plus new school! Differences???
Post by: bobbbbsy on February 24, 2013, 11:22 PM

 :LolLolLolLol:

what one ?

Title: Re: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 11:28 PM

Not awake

This
Erm..ok its a 2000  :LolLolLolLol:  http://bmxmuseum.com/bikes/mongoose/39221

Mine at mo has crap 3 spoke black wheels but will change them to either same as in pic OR as I want newer gearing...nick wheels off my sons spoked rims  :daumenhoch:

Title: Re: Mid school to old school plus new school! Differences???
Post by: bobbbbsy on February 24, 2013, 11:34 PM

you could prob get away with that looks wise but i dunno if it would work with the gyro if u have one , wanna keep it ??

you mean a 9 - 12 tooth cassette rear wheel ?

Title: Re: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 11:37 PM

The gyro can gyro off the planet. Don't like them!
No stickers on my frame plus the chrome has gone too scabby in places. Seat post bloody stuck too.

Yep 9 tooth rear cassette

Title: Re: Mid school to old school plus new school! Differences???
Post by: bobbbbsy on February 24, 2013, 11:47 PM

gonna look a bit odd with a 1 inch headset, one piece crank, 40 t wheel and a cassette rear + wont be great to ride !!  :LolLolLolLol:

back to the drawing board maybe !

Title: Re: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 11:51 PM

Changing front chainring ;) and crank
Want 3 piece

Title: Re: Mid school to old school plus new school! Differences???
Post by: Gal on February 24, 2013, 11:56 PM

Anyway... price for that adapter?

Title: Re: Mid school to old school plus new school! Differences???
Post by: bobbbbsy on February 25, 2013, 10:08 AM

bluey  :daumenhoch:

Title: Re: Mid school to old school plus new school! Differences???
Post by: Rodgy1970 on February 25, 2013, 11:19 AM

This fella used a burner frame to do something similar to what you want to do.

(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn1/11147_10151490806127813_703472655_n.jpg)

"despite the colour of those cranks being HIDEOUS im poor and this is what i can afford :P

i just fancied some input, the frame has had no mods so completely reversible

threadless forks and mid BB + Cranks

im gunna paint the cranks any ideas?
otherwise default black takes over :P"

http://www.raleighburner.com/phpBB2/viewtopic.php?p=326785&highlight=#326785