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Old 01-30-19, 03:11 PM
mstateglfr's Avatar
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Location: Des Moines, IA
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Bikes: '87 Miyata 912, '87 Schwinn Prelude, '90 Fuji Saratoga, Black Mountain Cycles Monstercross V4, '89 Novara/Centurion Ironman, '18 Diamondback Syncr, '18 handmade steel roadbike

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Originally Posted by BirdsBikeBinocs View Post
Thanks for that. How do you describe the big balls on the older 105 that are now present on the 4700 Tiagra.?? The hoods have that "hump" on the inside just like the old 105. They look identical in person.

Oh ya... And here is the 505 that I've mentioned. Which references a 105 groupset. Copied from an online dealer. How do you explain this.??

Front Brake: Shimano BR-RS505 hydraulic disc brakes, 160mm
Rear Brake: Shimano BR-RS505 hydraulic disc brakes, 160mm
Oh, i got ya now- the hydraulic STIs. Yeah, they look similar. And they all look fugly to me.
Still- the 10sp Tiagra drivetrain, all of it, is different from 5700. 10sp 4700 shifts differently than 5700.

This really confuses things though as now that you clarified you mean Tiagra hydraulic(i saw that in your Trek link), it for sure isnt a clone of 5700 which is a mechanical brake system. It seems you are claiming Tiagra hydraulic and 5700 are identical.

I hope you can see why the other poster was also confused.

In the end- yes there is trickle down technology. No, not all current generations of a lower level product are identical to the previous generation of a higher level product.
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