Tantan GR030 Gravel Build

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Frisco
Posts: 92
Joined: Sat May 09, 2009 6:23 pm
Location: Bay Area, CA

by Frisco

This gravel bike was not intended to be a weenie build, and I did not weigh components. It's been about 6 weeks since I started building, and I just finished this weekend and got my test ride in. The current weight as ridden with keo pedals, a temporary SSM sadle and sealant is 8.1kg.

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Tantan GR030 Size M Frame
Tantan GR030 Fork
Tantan GR030 Seatpost
Tantan GR030 Headset
Tantan GR030 15x100 Front Axle
Tantan GR030 12x142 Rear Axle
Far Sports 700x30 40mm Front Wheel. DT240S Centerlock Hub and 24 CX-Ray Spoke
Far Sports 700x30 40mm Rear Wheel. DT240S Centerlock Hub and 28 CX-Ray Spoke
Easton EA90 SL Direct Mount Cinch Gravel Shifting Chainrings
Easton EC90 SL Carbon 172.5mm Crank Arms
Easton Cinch Power Meter
Easton BB86 Bottom Bracket, Black, One Size
Shimano XT M8000 11 Speed 11-42t Cassette
Shimano Ultegra RX805 Di2 Rear Derailleur 2018
Shimano Ultegra Di2 ST-R8070 Shifters & Disc Brake Caliper Set
Shimano Ultegra Di2 FD-R8050 Front Derailleur
Shimano Ultegra SM-RT800 Disc Rotor 160mm
Shimano BT-DN110 Di2 Internal Battery
Shimano E-Tube Di2 Internal Junction-A - EW-RS910
Shimano SM-EWWU111 Di2 Bluetooth Unit
Shimano EW-JC130 Y-connecter Cable
Panaracer Gravelking GravelkingSK 700x38 Brown
Orange Endurance Sealant
PRO Vibe Stem, 110mm, Black, -10deg
3T Superghiaia Handlebars 40mm
Berk Dila Saddle
KMC X11 SL TI-N 11 SPEED CHAIN - Gold
Xpedo M Force 8 Pedals
Supacaz Coffee Tape
Wahoo Elemnt

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LeDuke
Posts: 1544
Joined: Sun Oct 07, 2012 2:39 am
Location: Front Range, CO

by LeDuke

If you want to drop some cheap and easy weight, get some J & L thru axles on eBay. Probably lose most of 50 grams for $40.


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by Weenie


spdntrxi
Posts: 3258
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

i like it... alot

I got the hardlites from ebay (thur axles) dirt cheap and lite as well.

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onemanpeloton
Posts: 288
Joined: Wed Jul 12, 2017 11:30 am
Location: Edinburgh, UK

by onemanpeloton

That looks really cool!
2017 Giant TCR Disc
2015 Giant TCX
2016 Cube Stereo 140

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kidrob
Posts: 272
Joined: Mon Apr 10, 2017 9:06 am
Location: Belgium

by kidrob

What a beast! Love it, well done!

Frisco
Posts: 92
Joined: Sat May 09, 2009 6:23 pm
Location: Bay Area, CA

by Frisco

Supplied axles seem to be a bit chubby - I will check the eBay options out. Thanks!

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spdntrxi
Posts: 3258
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

you are gonna lose 130g +.. as long as you dont mind losing the levers.

Atleast for the hardlites pay attentions to the overall length and where the thread start and end... they give drawings on the listings, so you can be sure they ones you are getting fit the bike.

Frisco
Posts: 92
Joined: Sat May 09, 2009 6:23 pm
Location: Bay Area, CA

by Frisco

These axles seem to be oddball sizes and I don’t see anything that fits so far. Hardlite confirmed they don’t have anything that will fit, so for now I stay with these but keep looking.

I went for a ride last weekend and the bike needs some fit adjustments. I’m not used to larger tires or the gearing but felt like I was straining to make power. I did a quick check with a fitment app and the saddle seems to need to come forward because my knee is behind the pedal. My Z4 fit for comparison seemed to be nearly spot on and feels great. Hopefully I don’t need a non offset seat post, because it’s not clear that they are available. I am still using road shoes, pedals and a spare saddle, so I’ll check again after I get those sorted.

Overall no major complaints with the bike but rides are limited to roads so far. The seatpost wedge has been fine so far. I will keep on the lookout for a US made frame if I can find something nice on eBay. Di2 is really nice, and the integration with the Element and power meter is great. I can’t imagine going back to mechanical groups.

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Prosero
Posts: 4
Joined: Sun Nov 11, 2018 12:09 pm

by Prosero

Frisco wrote:
Mon Dec 03, 2018 4:50 am

Shimano BT-DN110 Di2 Internal Battery
Shimano E-Tube Di2 Internal Junction-A - EW-RS910
Great bike. Congratulations.

One question: Does the battery pack fit into the seat post and did you need a special adapter for that?

Frisco
Posts: 92
Joined: Sat May 09, 2009 6:23 pm
Location: Bay Area, CA

by Frisco

Prosero wrote:
Frisco wrote:
Mon Dec 03, 2018 4:50 am

Shimano BT-DN110 Di2 Internal Battery
Shimano E-Tube Di2 Internal Junction-A - EW-RS910
Great bike. Congratulations.

One question: Does the battery pack fit into the seat post and did you need a special adapter for that?
Yes it fits. I am using a small piece of foam plus electrical tape to keep it in place.


dtwolfen
Posts: 38
Joined: Wed Feb 15, 2017 9:05 pm

by dtwolfen

That is a beautiful bike. I keep looking at it and hope you can help answer a few questions. Does it come with a zero setback seatpost? Could I use a 3t Charlie zero setback seatpost on it? Could a 27.2 seatpost fit into the seattube with some custom spacers made? Thanks for any information. Excited to hear how you like it long term.

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Frisco
Posts: 92
Joined: Sat May 09, 2009 6:23 pm
Location: Bay Area, CA

by Frisco

dtwolfen wrote:That is a beautiful bike. I keep looking at it and hope you can help answer a few questions. Does it come with a zero setback seatpost? Could I use a 3t Charlie zero setback seatpost on it? Could a 27.2 seatpost fit into the seattube with some custom spacers made? Thanks for any information. Excited to hear how you like it long term.

Sent from my LG-H700 using Tapatalk
Unfortunately their setback seatpost is the only option as of the last time I spoke with them. I could use one also actually because my knee is a bit behind the pedal. You might want to ask in case more requests trigger them to offer a non setback version. I don’t think you can use a round post but will double check the diameter later.


Frisco
Posts: 92
Joined: Sat May 09, 2009 6:23 pm
Location: Bay Area, CA

by Frisco

dtwolfen wrote:Could a 27.2 seatpost fit into the seattube with some custom spacers made?

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Just measured it: 24.5mm

by Weenie


luisito
Posts: 2
Joined: Wed Jan 30, 2019 9:59 pm

by luisito

Frisco wrote:
Thu Jan 03, 2019 1:42 am
dtwolfen wrote:Could a 27.2 seatpost fit into the seattube with some custom spacers made?

Sent from my LG-H700 using Tapatalk
Just measured it: 24.5mm
Hi,
could you tell me, please, how long the seatpost is?
Thanks.

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