Farrnus Posted March 11, 2020 Share Gone and paid for! Link to comment Share on other sites More sharing options...
Jonesy Posted March 12, 2020 Share Hi all. This build has been rather frustrating for me...So I have an Ultegra R8020 drivetrain that i want to pair with a 50-34 crank. Apparently this frame can only take a top pull FD! An MTB FD will work BUT that wont handle the 50t chainring size neither will it be compatible with the shifter!#@%#$$ Can somebody please advise how I can get this crank and front shifter to work on this frame? Pleeeez.... andreas17777 1 Link to comment Share on other sites More sharing options...
Monark Posted March 12, 2020 Share Any news on when the wide drop bars will land? Link to comment Share on other sites More sharing options...
andreas17777 Posted March 12, 2020 Share Hi all. This build has been rather frustrating for me...So I have an Ultegra R8020 drivetrain that i want to pair with a 50-34 crank. Apparently this frame can only take a top pull FD! An MTB FD will work BUT that wont handle the 50t chainring size neither will it be compatible with the shifter!#@%#$$ Can somebody please advise how I can get this crank and front shifter to work on this frame? Pleeeez....Hi, I used a bottom pull fd, My cable just comes from the bottom with my rd cable. Will send a poc tomorrow Link to comment Share on other sites More sharing options...
Farrnus Posted March 13, 2020 Share Hi all. This build has been rather frustrating for me...So I have an Ultegra R8020 drivetrain that i want to pair with a 50-34 crank. Apparently this frame can only take a top pull FD! An MTB FD will work BUT that wont handle the 50t chainring size neither will it be compatible with the shifter!#@%#$$ Can somebody please advise how I can get this crank and front shifter to work on this frame? Pleeeez.... hi, this bike was designed as a gravel / tourer / bike packing model. See attached the frame drawing showing spec parameters. it is for FD top-pull and then a choice of either a 1x or a 2x setup. 1x is 50T max. the 2x setup suggested is Shimano 46/36T which is in line with gravel trends at the time. This is a rather old model - designed in 2017 now. Since 2017 Shimano has added a Gravel Specific range of parts - the GRX ,below from their Media Pack about FD options : GRX Front derailleurs (FD): Complementing the cranksets, the Di2 or Mechanical front derailleurs are built with 2.5mm more outbound clearance for wider tires (up to 42mm) to cope with riding on rough roads. This means GRX front derailleurs must be combined with Shimano GRX +2.5mm cranksets. Both RX800-series mechanical and Di2 front derailleurs are built to accommodate Shimano’s widest 17T front chainring 48-31T gear ratio whilst the FD-RX400 10-speed derailleur accommodates the 16T chainrings found on the RX600 46-30T 10-speed cranksets. Shimano Di2 FD’s can be perfectly adjusted using Shimano’s simple and integrated controls whilst mechanical FD’s bring an extremely light front shifting feeling with an ergonomic power curve, toggle link construction for more cable routing options and an integrated cable tension bolt for precise and easy adjustments.Probably you should be looking at GRX-810 or 815 FD for this build - will allow you to run the 48-31T option they recommend. Link to comment Share on other sites More sharing options...
Jonesy Posted March 13, 2020 Share Hi, I used a bottom pull fd, My cable just comes from the bottom with my rd cable. Will send a poc tomorrowReally? Please if you can let me know the details of your drivetrain. You can WhatsApp pics to me on 0844551212. Much appreciate the input. Sean Link to comment Share on other sites More sharing options...
Jonesy Posted March 13, 2020 Share hi, this bike was designed as a gravel / tourer / bike packing model. See attached the frame drawing showing spec parameters. it is for FD top-pull and then a choice of either a 1x or a 2x setup. 1x is 50T max. the 2x setup suggested is Shimano 46/36T which is in line with gravel trends at the time. This is a rather old model - designed in 2017 now. Since 2017 Shimano has added a Gravel Specific range of parts - the GRX ,below from their Media Pack about FD options :GRX Front derailleurs (FD): Complementing the cranksets, the Di2 or Mechanical front derailleurs are built with 2.5mm more outbound clearance for wider tires (up to 42mm) to cope with riding on rough roads. This means GRX front derailleurs must be combined with Shimano GRX +2.5mm cranksets.Both RX800-series mechanical and Di2 front derailleurs are built to accommodate Shimano’s widest 17T front chainring 48-31T gear ratio whilst the FD-RX400 10-speed derailleur accommodates the 16T chainrings found on the RX600 46-30T 10-speed cranksets. Shimano Di2 FD’s can be perfectly adjusted using Shimano’s simple and integrated controls whilst mechanical FD’s bring an extremely light front shifting feeling with an ergonomic power curve, toggle link construction for more cable routing options and an integrated cable tension bolt for precise and easy adjustments.Probably you should be looking at GRX-810 or 815 FD for this build - will allow you to run the 48-31T option they recommend. Ok.... thanks for the reply. Will those GRX fd's be compatible with my Ultegra shifter? Also,(and i know I'm pushing it), do you think they might work with my 50-34 crank? Link to comment Share on other sites More sharing options...
Farrnus Posted March 13, 2020 Share Ok.... thanks for the reply. Will those GRX fd's be compatible with my Ultegra shifter? Also,(and i know I'm pushing it), do you think they might work with my 50-34 crank? that is a question for Shimano - I am not an expert on their compatibility and range in total - suggest you checking with your local bike shop - they can ask Coolheat ( the importers of Shimano in SA ) those kinda of questions if they don't have the info or know. there usually is some "cross-polination" allowed but again - best to check with them directly. Link to comment Share on other sites More sharing options...
Karman de Lange Posted March 13, 2020 Share Ok.... thanks for the reply. Will those GRX fd's be compatible with my Ultegra shifter? Also,(and i know I'm pushing it), do you think they might work with my 50-34 crank? FD is not so full of @#$ .. you can get away with alot. If you have one at moment, try it. See: https://bike.bikegremlin.com/1297/bicycle-front-derailleur-compatibility/ Shimano road and MTB FDs have different cable pull ratio – that is the amount of FD movement for each mm of cable movement. This means that MTB FDs might not work well with indexed road shifters and vice versa. With double chainrings, this issue can be fixed with adjusting limit screws and it could be made to work. With triple chainrings, it is harder to get it to work properly. However, FD cage is a lot wider than the chain and triple FDs have just 3 positions, so depending on particular shifter – FD combination, even that can sometimes be made to work OK. Link to comment Share on other sites More sharing options...
Jonesy Posted March 13, 2020 Share that is a question for Shimano - I am not an expert on their compatibility and range in total - suggest you checking with your local bike shop - they can ask Coolheat ( the importers of Shimano in SA ) those kinda of questions if they don't have the info or know. there usually is some "cross-polination" allowed but again - best to check with them directly.Thanks... will do so. Link to comment Share on other sites More sharing options...
Jonesy Posted March 13, 2020 Share FD is not so full of @#$ .. you can get away with alot. If you have one at moment, try it. See: https://bike.bikegremlin.com/1297/bicycle-front-derailleur-compatibility/ Shimano road and MTB FDs have different cable pull ratio – that is the amount of FD movement for each mm of cable movement. This means that MTB FDs might not work well with indexed road shifters and vice versa. With double chainrings, this issue can be fixed with adjusting limit screws and it could be made to work. With triple chainrings, it is harder to get it to work properly. However, FD cage is a lot wider than the chain and triple FDs have just 3 positions, so depending on particular shifter – FD combination, even that can sometimes be made to work OK.Thanks for the reply.... my main dilema is that the frame takes a top-pull fd and the one in my groupo is bottom pull. Andreas17777 has gotten in touch and says he's managed to get a bottom-pull to work with his setup! So I'm getting details from him.... and keeping my fingers crossed. Edited March 13, 2020 by Jonesy Karman de Lange 1 Link to comment Share on other sites More sharing options...
PhilipV Posted March 13, 2020 Share Thanks for the reply.... my main dilema is that the frame takes a top-pull fd and the one in my groupo is bottom pull. Andreas17777 has gotten in touch and says he's managed to get a bottom-pull to work with his setup! So I'm getting details from him.... and keeping my fingers crossed.You can always try this. Farrnus 1 Link to comment Share on other sites More sharing options...
PhilipV Posted March 13, 2020 Share You can always try this. And if the zip ties doesn't look lekker, then get one of these stick on cable guides to hold the cable.https://bikemob.co.za/products/jagwirestickoncableguide Edited March 13, 2020 by PhilipV Link to comment Share on other sites More sharing options...
Prince Albert Cycles Posted March 13, 2020 Share Thanks for the reply.... my main dilema is that the frame takes a top-pull fd and the one in my groupo is bottom pull. Andreas17777 has gotten in touch and says he's managed to get a bottom-pull to work with his setup! So I'm getting details from him.... and keeping my fingers crossed.Drill a small hole at the back of the seat tube , fit threaded plug ( with a pop rivet like tool) and thread a cable stop for a down pull Fd. Link to comment Share on other sites More sharing options...
Jonesy Posted March 15, 2020 Share And if the zip ties doesn't look lekker, then get one of these stick on cable guides to hold the cable.https://bikemob.co.za/products/jagwirestickoncableguideThanks for this..... will definitely look at this option. ???? Farrnus 1 Link to comment Share on other sites More sharing options...
Jonesy Posted March 15, 2020 Share Drill a small hole at the back of the seat tube , fit threaded plug ( with a pop rivet like tool) and thread a cable stop for a down pull Fd. Interesting.... will look at this optionThank you very much!???? Link to comment Share on other sites More sharing options...
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