Search found 1344 matches

by garygkn
5 Jan 2024, 3:49pm
Forum: Bikes & Bits – Technical section
Topic: Rear vertical drop out thicker on the drive side
Replies: 31
Views: 2975

Re: Rear vertical drop out thicker on the drive side

Hi, I had a frame builder remove the extra material so that regular standard wheels could go in. It was totally unnecessary to my mind to keep the extra material. I still can't get my head around why it's a useful thing to have. Thanks for posting the Campag picture. It looks like a rare component.
by garygkn
25 Apr 2023, 8:56am
Forum: Bikes & Bits – Technical section
Topic: Uniglide 5 speed compatibility with Uniglide 6 speed
Replies: 6
Views: 579

Re: Uniglide 5 speed compatibility with Uniglide 6 speed

Sorry if that was unclear.
I have a 5 speed Uniglide cassette hub.
Spaced at 120mm. None of this is an issue as my frame is spaced at 120mm.
What I need to know is will a 6 speed Uniglide cassette fit the 5 speed Uniglide hub. I understand that the freehub body is too short but if I omit one cog so that I’m only using 5 cogs including the screw in cog will it work?
I see more 6 speed cassettes available than 5.
by garygkn
24 Apr 2023, 10:28pm
Forum: Bikes & Bits – Technical section
Topic: Uniglide 5 speed compatibility with Uniglide 6 speed
Replies: 6
Views: 579

Uniglide 5 speed compatibility with Uniglide 6 speed

I have a frame that I am not going to re-space.
It's 120mm rear spacing.
I have a Shimano Uniglide 5 speed freehub.
Does anyone know if a Uniglide 6 speed cassette would fit if I removed one cog?

Looking at Sheldon Brown's site 5 speed and 6 speed have the same spacing at 5.5mm.
The stack height for 5 speed is 24mm.
The stack height for 6 speed is 29.5mm.
So I thought removing 1 cog would work but I maybe wrong or missing something?

I have been looking for the Grand Bois 120mm freehub and also the SUNXCD version but I can't find any.

Any feedback is much appreciated.

Thanks,
Gary
by garygkn
19 Feb 2022, 12:01am
Forum: Bikes & Bits – Technical section
Topic: BL-R400 compatibility with 4600 brake calipers
Replies: 7
Views: 475

Re: BL-R400 compatibility with 4600 brake calipers

Even with all the threads engaged would it be safe enough?
by garygkn
18 Feb 2022, 5:53pm
Forum: Bikes & Bits – Technical section
Topic: BL-R400 compatibility with 4600 brake calipers
Replies: 7
Views: 475

Re: BL-R400 compatibility with 4600 brake calipers

Thanks. I am going to stick with Super SLR. Adjuster barrel seized this is now my new nightmare.
by garygkn
17 Feb 2022, 11:11pm
Forum: Bikes & Bits – Technical section
Topic: BL-R400 compatibility with 4600 brake calipers
Replies: 7
Views: 475

Re: BL-R400 compatibility with 4600 brake calipers

Thanks for that information it was very useful.
I also have some BL 6403 but these are also not compatible - Super SLR.
Luckily I found some Super SLR calipers that I'd bought but never used however I do seem to have bought mainly rears. Looking back I think I may have confused these with fronts or I just lost the fronts.
by garygkn
17 Feb 2022, 4:04pm
Forum: Bikes & Bits – Technical section
Topic: BL-R400 compatibility with 4600 brake calipers
Replies: 7
Views: 475

BL-R400 compatibility with 4600 brake calipers

Hi,
I have some levers they are new BL-R400 and I was planning on using them with some new Shimano Tiagra 4600 brake calipers.
However I read the instructions and there's a warning:

Must be used in conjunction with ST-4600, ST-4603, ST-5700, ST-5703, ST-6700 or ST-7900 STIs for correct leverage ratio

How can I find out if the BL-R400 is at the correct pull ratio?

I am not using any STI levers this is an older bike using down tube shifters.

Thanks for any feedback.
by garygkn
17 Feb 2022, 3:51pm
Forum: Bikes & Bits – Technical section
Topic: Dawes MTBs from the 1980s
Replies: 71
Views: 9367

Re: Dawes MTBs from the 1980s

Good thread. Nice to see these MTBs still in use.
That last green one looks fantastic. Very inspiring.
by garygkn
8 Feb 2022, 1:23am
Forum: Bikes & Bits – Technical section
Topic: Down tube shifters for a triple
Replies: 9
Views: 868

Re: Down tube shifters for a triple

Thanks for the feedback that was very useful. Hopefully it will work well. The bike is more useful with the wider range.
by garygkn
7 Feb 2022, 11:53pm
Forum: Bikes & Bits – Technical section
Topic: Down tube shifters for a triple
Replies: 9
Views: 868

Re: Down tube shifters for a triple

Many thanks for that. there was a panic re the Claris not working it wasn't even tried.
Also I just read over at SJSC that 30t was the lowest you could go.
I am glad you answered. 46/36/26 seemed to be in no mans land with nothing road based officially catering for that size.
by garygkn
7 Feb 2022, 11:36pm
Forum: Bikes & Bits – Technical section
Topic: Down tube shifters for a triple
Replies: 9
Views: 868

Re: Down tube shifters for a triple

Thanks he has a nos Shimano Exage mountain front mech FD-M450.
You are correct it looks incompatible.
Rings are 46/36/26 and he has a Claris triple front mech but the spec says 48 is the smallest. Not sure what he can use if not the Claris?
Product Description:
This is a new-old-stock (NOS) Shimano Exage Mountain triple front derailleur from the late 80's (model FD-M450). Some of it's more prominent design features include...

Capacity: triple chainring with 20T (max) difference and 48T (max) large chainring (shop catalog specs)

Compatibility: marketed as a mountain bike model during the 6-speed cassette/freewheel era (although I believe this unit would also function well with a slightly newer 7-speed drivetrain)

Mounting bracket: clamp-on (31.8 mm)...so should be compatible with mountain bikes having an oversized seat tube that require a clamp-on unit. Additionally, this clamp is an EC (Endless Clamp) type, which means the clamp is essentially a clip that wraps around a seat tube and "clips" into the derailleur body where a clamp bolt is used to tighten the clip/clamp around the seat tube.

Cable pull: bottom (so cable routing must enter from below the unit)

Design: conventional/bottom swing

Weight: 114 grams (per our digital postal scale)

The Shimano Exage group of this generation was considered one of Shimano's better mountain bike sport/fitness group set, and one step below their higher-end mountain bike product lines (i.e., Deore LX, XT, etc.). This groupset retains many of the features of Shimano's better mountain bike components...so they will perform very well...but should still only be considered for drivetrains that will not be subject to the duress brought about by competitive cycling.

Please also note that Shimano designs their road and mountain bike front derailleurs to different index shifting specifications. In other words, an equivalent amount of cable pull on a Shimano road and mountain bike front derailleur will yield different cage movement of each unit. As a result, it is not recommended to mix-n-match Shimano road and mountain bike front derailleurs between road and mountain bikes when index shifting drivetrains are in use. Having said this, if the drivetrain is friction-based as it relates to the shifting over the front chainrings, then this problem is mitigated (but still keep in mind other derailleur specs before considering such mix-n-match combinations).

In terms of condition, all of these front derailleurs are new and unused, but they were bulk packed, so expect some scratches/scuffs in the silver finish. They still show fairly well overall, but upon closer inspection, these offerings will have some cosmetic blemishes. Additionally, all the hardware pieces (i.e., the chromoly steel screws, allen bolts, etc.) are very nice and show no signs of rust or corrosion...and those parts that are chromed, still shine bright.
by garygkn
7 Feb 2022, 10:30pm
Forum: Bikes & Bits – Technical section
Topic: Down tube shifters for a triple
Replies: 9
Views: 868

Down tube shifters for a triple

Hi,
A friend has just upgraded a Peugeot road bike from a double to a triple. He bought some NOS Shimano 105 SC 8 speed sis levers. The 8 speed worked and indexed perfectly. The front mech however is friction which is great however it appears that it was made for only with enough pull for a double. I haven't had a down tube triple for a while my Galaxy came new with down tube shifters This is getting on for 3 decades ago now and I can't remember anything special about them apart from they were reliable and worked.

Does anyone know of a down tube front lever that works with a triple mech?
The more options the better.

Much appreciated and many thanks in advance.
by garygkn
12 Nov 2021, 5:00pm
Forum: Bikes & Bits – Technical section
Topic: Double front mech for 44/32 road bike
Replies: 14
Views: 730

Re: Double front mech for 44/32 road bike

Thanks everyone. Hopefully I will get time this weekend to fit the 44/32 and try the Cyclone front mech first. I have sourced a few alternatives. I'm feeling more confident that something will. I'll report back my findings.