Tales from a Workshop.

nicklouse

eg: the kart applied the brakes (hence the lights) and the "cars" emergency braking system sees the lights and applied the brakes! and maybe kits the foam pad.

MacAndCheese

ah, I see - you definitely get up to some interesting stuff!

nicklouse

Well back to the shop in a bit after doing the washing!

here is a bit of fun from the weekend.

The Northern Monkey

could have done with that at uni!

nicklouse

Well the day finished off with a couple of road bikes for service.

Just after doing a frame swap.

this lot:



to

nicklouse

the main time was spent finishing of a GT dirt bike rebuild.

the frame had been sand blasted and painted and the headset cups and fork fitted and came with a few bits to be fitted.





first job remove the tape from the threads.



then chase the threads.



remove the handle to allow the facing tool to be fitted.



Fit the facing cutter.



then face the BB faces.



Not fully done



Done



Other side



remove tool and clean.



more in a bit.

nicklouse

So that was the BB faced and chased.

now fitting.

check the width for the right number of spacers.



insert cup by hand.



and then tighten.



assemble cranks and fit.
(no pic)
next problem the rear disc.



solution. move spacers to between calliper and adaptor as the disc was also catching on the calliper body.
also chain tugs were fitted to help with aligning the wheel as it waqs being run "short" on the drop outs.



Done.

MacAndCheese

This is fast becoming my favourite thread, really interesting seeing how you faced the BB. Good Stuff.

nicklouse

Today started of nice and easy.

BB change and gear set up on a road bike with a Sram groupset.

I like the double tap shifters.

then came a Marin.

A steel framed Marin with problems.



I wont say what was wrong i will just put up the pics.









Sorry have to go back to the rear mech




So the first thing was to see if the frame was savable.

straightening the mech hanger.

next post.

nicklouse

so the hanger straightener is screwed in and the bend removed.



then it is make sure that it is correctly aligned by measuring around the rim.




when it is all the same it is right.

nicklouse

Ok the BB is shot so that need to come out.

it had been in for years and i had already split the cup on the non drive side.





great tool that screws into the BB axle as well



and out it comes.



Lovely.


so how to get the cup out as you can not use a BB tool.

next post.

nicklouse

So how to remove a stuck BB cup.

Insert a Hacksaw.


and make some cuts.




and then knock the pieces of Pie out.



then chase the threads out and clean the BB areaready for the new BB.

redvee

I presume the ND cup was plastic, can't see you cutting a metal one.

nicklouse

redvee wrote:

I presume the ND cup was plastic, can't see you cutting a metal one.

Yes and do the same on any cup the alloy ones may need a few more cuts and a bit more force.

But they tend to not fail as often.

Andy B

That BB tool looks awesome, one hell of a good length on it (oo-er!)

The rear mech is about as gunked up as the ones I usually get to work on too, why oh why do folks let them get so bad :roll:

nicklouse

andy that is the flat bar extension the actual handle is about 8"

will provide images later.

danielsbrewer

Really interesting posts. Thanks.

daniel_owen_uk

What affect will straightening the mech hanger have in terms of strength?

Looked unrecoverable to me, cracking job.

nicklouse

daniel_owen_uk
it varies. in the case this mech hole is slightly Oval now. One more big bend and it will be a failure, Note this was a steel frame.

nicklouse

So Today.

servicing servicing and deciding to do nothing to a road bike as it would be better to let it all wear out rather than changing the chain.

But it will be getting new drivetrain in the spring.


Today's build.

well just the start as we needed to see what we had and what we needed.

and as the BB will be external it started with a chase and face.




then it was decided to face the disc mounts.

Fit the tool axle.



fit the cutter and face.



will continue with this next week.

nicklouse

more service and started a few builds and ordered the parts in.

and a blast from the past.

joshtp

nicklouse wrote:

more service and started a few builds and ordered the parts in.

and a blast from the past.

Judy DH?

MacAndCheese

Judy DH?

Think they're Marzocchi DH3s if I'm not mistaken, from around 95-96ish, when I very first got into MTBs and 80/100mm was considered plush!

nicklouse

MacAndCheese
have a cookie.

Well today was full of surprises.

As known the two bosses were going to be away visiting Shimano.

But they did not tell me that a "practicant" (Student placement) was meant to start this week, Well I sent him home as there was nothing for him to do. They can sort him out on Wednesday.

so a few services and made a start on sorting out the shelves. So much stuff that is scrap but might be useful.

Need a "Yard sale"

supersonic

Not seen one of those Zocchis since 1998 when a shop had a pair on a bike!

nicklouse

As there have been a few topics where people have broken chain whips or bent them.

my brace.



and for really stubborn ones.



Oh and there is also a Park combo big spanner/chain whip.

thelonegroover

nicklouse wrote:

MacAndCheese
have a cookie.

Well today was full of surprises.

As known the two bosses were going to be away visiting Shimano.

But they did not tell me that a "practicant" (Student placement) was meant to start this week, Well I sent him home as there was nothing for him to do. They can sort him out on Wednesday.

so a few services and made a start on sorting out the shelves. So much stuff that is scrap but might be useful.

Need a "Yard sale"

I'd have asked the student to sort out the shelves.

MacAndCheese

Just looked up those old DH3s, they in fact had 77mm of travel! on a DH fork!

nicklouse

Thelonegroover
that will be his job on wednesday when i have had a look.

then there is the 1000s of tyres that need sorting/binning.

MacAndCheese have a look in the Downhill section for a You tube vid of Peaty the UK DH champs winning with no sus.

jairaj

nice thread, really interesting. thanks Nick