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My mom's new bike is faulty?

Old 06-18-22, 06:58 AM
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trickybilly
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My mom's new bike is faulty?

I have bought a brand new bike to my mom. There are 3 gears front, 6 gears rear. When we try to shift from 2nd gear front to 3rd gear front the bike struggles and often fails to shift. Why?

Specs:
Front gear: Shimano fd-tz500-ds6, Rear gear: Shimano fd-tz500, tz, gs 6 speed, Gear handle: Sram mrx

Last edited by trickybilly; 06-18-22 at 07:11 AM.
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Old 06-18-22, 06:59 AM
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Take it to a bike shop for adjustment.
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Old 06-18-22, 07:40 AM
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Do you have grip shifters, the kind you twist? If so, the rear will shift one gear with each click but the front might not. Some front grip shifters have several clicks between gears. I've seen at least once cyclist get confused about that.
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Old 06-18-22, 07:41 AM
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Since 3x6 bikes have not been available from most bike mfgís for 30 years, Iím guessing the brand new bike is from Amazon, Walmart, or a similar discount store.

The tough part is deciding if you want to/can spend more to get a fully functioning bike or if the budget is going to remain as low as possible.

If you can take/send the bike back, that is your best course to take.

John
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Old 06-18-22, 07:50 AM
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Originally Posted by 70sSanO View Post

If you can take/send the bike back, that is your best course to take.
Rather drastic for adjusting the FD, donít you think?
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Old 06-18-22, 07:54 AM
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If itís not what andrewclaus said above then itís very likely the high limit adjustment.

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Old 06-18-22, 07:56 AM
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Originally Posted by Darth Lefty View Post
Rather drastic for adjusting the FD, donít you think?
Not if it is a Walmart bike.

Maybe Iíve been out of the loop too long and 3x6 gearing has made a comeback for bikes available at bike shops.

John
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Old 06-18-22, 10:12 AM
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That’s the kind of helpfulness that keeps people out of bike shops.
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Old 06-18-22, 10:35 AM
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Originally Posted by andrewclaus View Post
Do you have grip shifters, the kind you twist? If so, the rear will shift one gear with each click but the front might not. Some front grip shifters have several clicks between gears. I've seen at least once cyclist get confused about that.
I have grip shifters. Thank you for the advice
[QUOTE=70sSanO;22545807] Iím guessing the brand new bike is from Amazon, Walmart, or a similar discount store /QUOTE]

I have bought it from a Serbian bike manufacturer's official store. Although you are right, I should have looked for a better model. However this was the only "ladies bike" in the store that was matching my mom's height.
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Old 06-18-22, 10:46 AM
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[QUOTE=trickybilly;22545948]I have grip shifters. Thank you for the advice.
.
Originally Posted by 70sSanO View Post
However this was the only "ladies bike" in the store that was matching my mom's height.
If by “store” you mean a brick and mortar, take it back and have them fix it to function properly.

If it is an online store, find out what support they offer. If none, then you have to decide if it is worth your effort to keep the bike.

There are a lot of things you can check to determine if this is an isolated issue or just the first one of many. If the hub bearings feel rough, the brakes flimsy, wheels are not true, these are just some of the issues down the the road.

If you are able to fix/adjust everything yourself and have the tools, it might work out if the bike will get limited use. If you can’t fix everything yourself it might be a frustrating, and more costly, experience than getting a better bike.

John

Last edited by 70sSanO; 06-18-22 at 10:50 AM.
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Old 06-18-22, 10:50 AM
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Originally Posted by trickybilly View Post
I have bought a brand new bike to my mom. There are 3 gears front, 6 gears rear. When we try to shift from 2nd gear front to 3rd gear front the bike struggles and often fails to shift. Why?

Specs:
Front gear: Shimano fd-tz500-ds6, Rear gear: Shimano fd-tz500, tz, gs 6 speed, Gear handle: Sram mrx
Do you mean from the middle front chain ring, to the largest chain ring ?
If so, that can be troublesome sometimes because the chain has to go "up hill" from the smaller ring. The largest front ring is for going fast, such as down hill, or with a tailwind. In those situations, ease off the pedal pressure a bit when going to the larger ring until the shift has completed.

There may also be adjustment issues, such as the limit screw in too far, restricting the front derailleur movement.
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Old 06-18-22, 07:08 PM
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Here's one of many good videos on how to setup your derailleur. BikeGremlin is a forum member and lives in Serbia as well.
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Old 06-18-22, 09:25 PM
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Originally Posted by Darth Lefty View Post
If itís not what andrewclaus said above then itís very likely the high limit adjustment.
Lots of similar bikes won't have SIS housing which doesn't help the situation either.

OP, The videos will help get it set up if you follow them, but if when you're done it still does not work you want to check the housing the cable goes through. If you can see lots of little lines under the plastic, the bike came with the wrong kind of housing. Most front derailleurs with you style shifter can work ok with it, but not all and you'll need derailleur specific housing.
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