Search found 58 matches

by cromo
5 Sep 2020, 3:11pm
Forum: Bikes & Bits – Technical section
Topic: Seat pin slippage
Replies: 30
Views: 968

Re: Seat pin slippage

I had the same problem and found it very annoying! I did not want to use excessive force on the seatpost bolt. So, I purchased a seatpost clamp (30.0 mm) and a seatpost shim (27.2 to 30.0mm) and cut the shim to fit inside the seatclamp. This extra clamp was then tightened around my existing seatpost...
by cromo
4 May 2020, 3:25pm
Forum: Bikes & Bits – Technical section
Topic: Deore XT T780 hubs
Replies: 22
Views: 672

Re: Deore XT T780 hubs

As mentioned, the non removable oil seal on these freehubs makes lubrication difficult. I used a piece of earth sleeving (the yellow / green stuff) pushed over the end of a old Wesco oil can. Inserting the flexible earth sleeving between the freehub body and the oil seal and giving the oil can a few...
by cromo
25 Apr 2020, 11:59am
Forum: Does anyone know … ?
Topic: how to tell a galvanised spoke from stainless
Replies: 157
Views: 4778

Re: how to tell a galvanised spoke from stainless

Thanks to Alexnharvey for taking those measurements!
It appears that it is possible to quickly tell a galvanised spoke from a stainless steel one if you have a meter that measures millivolts.
by cromo
24 Apr 2020, 9:09am
Forum: Does anyone know … ?
Topic: how to tell a galvanised spoke from stainless
Replies: 157
Views: 4778

Re: how to tell a galvanised spoke from stainless

Assuming that stainless with stainless would give a very small reading of a few millivolts or zero, then the result of 0.73V of stainless with plated would seem to indicate that the method has some merit. The comparison of plated to abraded is possibly less conclusive. I imagine when abrading a plat...
by cromo
23 Apr 2020, 10:27am
Forum: Does anyone know … ?
Topic: how to tell a galvanised spoke from stainless
Replies: 157
Views: 4778

Re: how to tell a galvanised spoke from stainless

I for one would be interested to see the results!
by cromo
23 Apr 2020, 10:18am
Forum: Does anyone know … ?
Topic: how to tell a galvanised spoke from stainless
Replies: 157
Views: 4778

Re: how to tell a galvanised spoke from stainless

I know a lot has been written about this topic but here is a another possible way of telling if a spoke is galvanised or not. You do however need a multimeter set to read millivolts. The advantage is that the results are instant, you do not need to wait to see if rusting occurs. Basically you set up...
by cromo
4 Sep 2019, 4:14pm
Forum: Bikes & Bits – Technical section
Topic: Loose seatpost - Spa Aubisque frameset
Replies: 67
Views: 4327

Re: Loose seatpost - Spa Aubisque frameset

To solve slipping seatposts I have used an extra seatpost clamp fitted around the seatpost. The extra seatpost clamp is fitted with a shim to make it the correct diameter so that it clamps securely. I used a seatpost shim of an appropriate thickness cut to the correct length. This does work! SJS cyc...
by cromo
1 Apr 2019, 9:59am
Forum: Bikes & Bits – Technical section
Topic: Bar end friction shifters
Replies: 33
Views: 2563

Re: Bar end friction shifters

I use Dia-Compe friction BE shifters on a 9 speed bike. It does take time to become familiar with them. As for operating them, I agree with Brucey, I hold my hand around the handlebar and use the third and fourth finger or the palm to pull or push on the levers. This allows a more controlled movemen...
by cromo
10 Sep 2018, 1:10pm
Forum: Bikes & Bits – Technical section
Topic: shimano 105 5600 cones
Replies: 13
Views: 840

Re: shimano 105 5600 cones

If there is play in the freehub then it may be worth dismantling it and removing shims to eliminate play.
by cromo
10 Sep 2018, 12:16pm
Forum: Bikes & Bits – Technical section
Topic: shimano 105 5600 cones
Replies: 13
Views: 840

Re: shimano 105 5600 cones

Have a look at
http://si.shimano.com/pdfs/ev/EV-FH-5600-2458C.pdf
I think it answers your question about freehubs.
by cromo
4 Apr 2018, 8:25am
Forum: Bikes & Bits – Technical section
Topic: Moulton TSR rear pivot
Replies: 392
Views: 19100

Re: Moulton TSR rear pivot

My engineering knowledge is limited, but I thought that oil filled bronze bushes as described above, were mainly intended for use in high speed applications like electric motors where radial loads are low and further lubrication is not necessary. Would a solid bronze or brass bush be better especial...
by cromo
14 Jan 2018, 11:59am
Forum: Bikes & Bits – Technical section
Topic: Moulton TSR rear pivot
Replies: 392
Views: 19100

Re: Moulton TSR rear pivot

I know nothing about Moulton bicycles and I am assuming that the bronze bush is plain inside. So, I was wondering if the bronze bush had grooves in it, running in the same direction as the sleeve, then would those grooves allow grease to reach the bearing surfaces more efficiently. Grooves could be ...
by cromo
31 Oct 2017, 8:42am
Forum: Bikes & Bits – Technical section
Topic: 105 front hub - seals interfering with bearing adjustment
Replies: 12
Views: 2703

Re: 105 front hub - seals interfering with bearing adjustment

I would be tempted to try assembling the bearing with the seal, but leave out one ball bearing per side. Maybe you have already tried this?
by cromo
31 Aug 2017, 11:23am
Forum: Bikes & Bits – Technical section
Topic: Cotter Pin Press/Removal Tool
Replies: 18
Views: 2418

Re: Cotter Pin Press/Removal Tool

I have in the past used a car ball joint separator to remove cotter pins e.g. Clarke CHT222, available from Machine Mart. I am not guaranteeing success with this tool in your case but it may be an option for you.
by cromo
8 Aug 2017, 8:04am
Forum: Bikes & Bits – Technical section
Topic: which Loctite for loose headset cup?
Replies: 21
Views: 1809

Re: which Loctite for loose headset cup?

A long time ago I had a loose headset cup. I measured the headtube and cups with vernier calipers and used steel shim to make up the difference and give the correct interference fit. I did use a headset press for the installation and was expecting the metal shim to crease or tear as the cup was inse...