Some nice part selections, I especially like that Specialized crank, don't see those often enough
1991 Lightning Flash Restoration JB0090
- Thread starter HuskyDinoBomber
- Start date
HuskyDinoBomber
BoTM Winner
Thanks those cranks are for sale, just saying
HuskyDinoBomber
BoTM Winner
My first time ever doing a freewheel swap has exposed my lack of bike specific tools. Purchases need be made to continue.
HuskyDinoBomber
BoTM Winner
I offered this guys substantially more than his ask as I was second in line but he would honour his word to the first buyer admirable but a big miss for me. Stem and fork gone
HuskyDinoBomber
BoTM Winner
Well i managed to find a proper fork for the bike but it needed some work. Think it going to be just perfect when done. Fresh fork decals on the way
HuskyDinoBomber
BoTM Winner
So I decided to assemble some parts and do a fit up. With this headset the steerer is 1/4” -3/8”short and with the logic crankset the 111mm bottom bracket axle is likely 10mm short. Any help or suggestions at this point would be appreciated. I will definitely need a new bottom bracket and am unsure if a change of headset will help or not.
I’d be looking for the lowest stack height, era appropriate headset you can find. That looks like a Shimano 600, pretty sure there are lower stack height units out there that would help, whether you get back a 1/4“ is hard to say. Others may be able to comment on steel steerer lengthening options.
If you have calipers measure all the exposed bits in mm to find your current stack height and start googling to see about options 5-10mm less
If you have calipers measure all the exposed bits in mm to find your current stack height and start googling to see about options 5-10mm less
That 600 unit may measure 37.6mm according to the interweb, XT & DX units may be around 33mm. I noticed a 1” version of a Tange Seiki Passage is around 30mm, is you bike 1” or 1-1/8”?
With these measurements I doubt you can make it work with a smaller stack headset. If you don´t want to go through the hassle of finding a fork with a longer steerer tube you could try to find a framebuilder who lengthens the existing one.
HuskyDinoBomber
BoTM Winner
Yes my initial thoughts are to lengthen the steerer as I work in an office with a large custom metal fabrication shop and getting it done should not pose an issue. i had intentions of switching to a 1” threaded Ritchey headset but I believe this one may be original and higher quality. As for the bottom bracket I see that they are available in a 123mm length
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