Boardman bike making a sound.

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OP
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lydiaald

Member
Hi thank you very much for that. We thought this was the case. However the right shifter couldn’t be fitted due to it not being compatible with the deore rear drailure so we are going to have to change the rear drailure to one that is compatible. We are also thinking of changing the square taper bottom bracket that it came with to a shimano hollow tech and putting a tegra crank on would this work do you know?
Unfortunately it seems that the bike Halfords supplied has a mixture of parts that probably shouldn’t have been put together. It cost us £120 to change to a trim shifter!




Front Derailleur: Shimano Tiagra FD-4700
Replacement LH shifter: https://bike.shimano.com/products/components/pdp.P-SL-4700.html
Compatibility:
The SL-4700 2x10 speed shifter set is compatible with Shimano Tiagra FD-4700 2X10 speed front derailleur
"Shimano SL-4700 Tiagra (flat handle) 2x front shifter has 4 positions:
  • High
  • High trimmed
  • Low trimmed
  • Low"
Shifter replaced was (best guess) Shimano Deore 2x10 (SL-M5100-L)
Assume this: https://bike.shimano.com/products/components/pdp.P-SL-M5100-L.html

Looks to me that the shifter fitted was not said to be compatible with the FD-4700 fitted (as sold by Halfords).
For flat bars the only option shown is "SL-": the "STs" are all for drop bars.
View attachment 775681
Replacing as you've done seems correct, but expensive given Halfords sold you a set up Shimano doesn't offer as compatible.
 
That drivetrain should work like a dream. I love pulling a bike out of the box and seeing that equipment. ( it’s going away fast now… and don’t ask my opinion of Cues ) Both Deore and Tiagra are really easy to set up well.

anyway, if it didn’t work right from new the set up was done poorly or the hardware is bent ( pretty common right out of the box, I built 6 bikes on Monday and had to straighten the rear derailleurs on two, not the hangers… actual bent derailleurs )
 

Punkawallah

Veteran
Had heard of the expression before and Google confirms ....

Some road bikes will come equipped with a front derailleur that has a “trim” feature. The trim allows you to make small adjustments to the front derailleur that will eliminate chain rub, but not cause a full shift into another chain ring.

Allows minute adjustment of the front changer to stop chain rub. I don't think you can get them for the RD. Might as well go back to friction changers.

What do you mean ‘go back’? :-)
 

Punkawallah

Veteran
Hi, my husband purchased the Boardman MTX 8.8 Mens Hybrid Bike. The gears didn’t all work on the bike so we had trim shifters fitted. Whilst this has sorted the issue for the most part it’s still making a noise when in the highest gear. Is there any solution to this? We thought trimming may solve this but it hasn’t. We did read if you put a grx rear derailleur on this may help? Does anyone have any experience with this bike and found a solution?
Thanks

Is the rear wheel straight in the frame?
Is the chain the right length?
Is the derailleur touching the spokes?
Is the chain rubbing together at the derailleur?
Is the cable end catching on the rider or the frame?
Is the chainring too near the chain?

Bear in mind that ‘cross chaining’ can be noisy.
 

Ajax Bay

Guru
Location
East Devon
Hi thank you very much for that. We thought this was the case. However the right shifter couldn’t be fitted due to it not being compatible with the deore rear drailure so we are going to have to change the rear derailleur to one that is compatible. We are also thinking of changing the square taper bottom bracket that it came with to a shimano hollow tech and putting a tiagra crank on would this work do you know?
Unfortunately it seems that the bike Halfords supplied has a mixture of parts that probably shouldn’t have been put together. It cost us £120 to change to a trim shifter!

From this I counsel replacement of the previous LH shifter and taking the bike straight back to Halfords asserting that it has been built with incompatible parts (not to spec?) and demand a complete refund.
"We sent the bike to an independent bike mechanic who fitted the Shimano Tiagra SL-4700 shifter"
the trim shifters have been a huge help and sorted most of the issues. These were recommended and put on by a bike specialist.
All this expense is just throwing good on a shaky foundation and this chap should have told you this.
"MOST of the issues"! "bike specialist" - as opposed to what sort of specialist?
I would not recommend replacing the ST chainset (and BB) with an HT2 one. It will offer zero performance benefit, and disproportionate to the value of the bike.
This smacks of 'upgraditis' which really should not infect a rider in the first couple of years of a new bike. Mitigation: buy a bike with the spec you want, not OTS and change parts.
 
Last edited:

cyberknight

As long as I breathe, I attack.
something sounds fishy . looking at the specs the bike should come with deore shifters and derailleurs which would all work together perfectly .
was the bike new or second hand ? if it was new then you should have taken it straight back for a refund although i have had numerous boardmans and never heard of or had any issues. The independent bike mechanic doesnt sound like he knows whats hes doing either as he should know what parts are compatible .
 
Last edited:

cyberknight

As long as I breathe, I attack.
Update
just looking at the specs and as far as i can work out the Deore FD doesnt have a trim function in the mech ? if this is true then like my sram 22 on my best bike the mech is designed to work without trim and thats down to initial set up so the angle of the fd is set right is doesnt need a trim function .
 
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C R

Guru
Location
Worcester
Update
just looking at the specs and as far as i can work out the Deore FD doesnt have a trim function in the mech ? if this is true then like my sram 22 on my best bike the mech is designed to work without trim and thats down to initial set up so the angle of the fd is set right is doesnt need a trim function .

ITYM shifter here.
 

cyberknight

As long as I breathe, I attack.
ITYM shifter here.

i had to look that up :smile:
i might be wrong of course but even if the shifter has a trim function if the mech doesnt have one it will not matter .
 

T4tomo

Legendary Member
Shimano drop bar shifter have a trim function for yonks and yonks. Initially on Ultegra and dura ace but its filtered right down to Tiagra now, the mech (as long as compatible with the shifter) doesn't matter, it is literally 4 positions on the cable movement instead of 2, so as the chain moves towards the larger cogs on the rear cassette, you can click to move the FD cage inward by a mm to help with chain alignment / counter chain rub.

from a skim read it sounds like billy the bike mechanic is bodging things by mixing up shifters between Deore and Tiagra right and left. I assume the OP's bike must be flat bar otherwise that would feed very odd on the hands.

if the bike is new and didn't work properly , it should be returned rather than let billy bodger keep charging the OP for stab in the dark changes.
If the OP bought it used then buyer beware.
 
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cyberknight

As long as I breathe, I attack.
Shimano drop bar shifter have a trim function for yonks and yonks. Initially on Ultegra and dura ace but its filtered right down to Tiagra now, the mech (as long as compatible with the shifter) doesn't matter, it is literally 4 positions on the cable movement instead of 2, so as the chain moves towards the larger cogs on the rear cassette, you can click to move the FD cage inward by a mm to help with chain alignment / counter chain rub.

from a skim read it sounds like billy the bike mechanic is bodging things by mixing up shifters between Deore and Tiagra right and left. I assume the OP's bike must be flat bar otherwise that would feed very odd on the hands.

if the bike is new and didn't work properly , it should be returned rather than let billy bodger keep charging the OP for stab in the dark changes.
If the OP bought it used then buyer beware.

trim function has been around for so long even on lower than tiagra on road bikes , my claris has trim but some groupsets dont
 

C R

Guru
Location
Worcester
i had to look that up :smile:
i might be wrong of course but even if the shifter has a trim function if the mech doesnt have one it will not matter .

The mech only has a spring and nothing to define positions, it is the shifter that has defined stops to keep the derailleur in the place that is needed.
 
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