It is for sure no residue from welding or painting, as it is not standing out, it is definitely going into the material.
There is no visible movement in the "crack" under load, also the paint is not cracked (or damaged) which seems to be a sign that it is not a crack.

But as you say, I will further ride the bike and have an eye on it. Thanks for comforting me 

Hey Guys,

i got a lot of help here while planning my first bike build last spring, so I want to return the favor and tell a bit of my experience of the GR02 frame.

I bought the Tsunami (Seaboard) GR02 frame. I ordered directly over the Tsunami website and it arrived after 3 weeks, was well packaged and looked great. It costed me 526€ with shipping to Germany and taxes pre-paid. I only came to build it recently with a LTWOO 2x11 kit with Zrace BR-005 and 105 Casette and Chain. Build went well, most struggles here came from the inner cable routing handlebars that I chose (Great that my next frame (CFR707) is fully internal routed ).

The frame rides good, and comfortable with my 38mm gravel tires. It is not remarkably stiffand while pushing higher watts, it really flexes at the bottom bracket. I have only discovered recently, with the bike mounted on a indoor trainer, that you can really see the flex. This made me a bit worried.
Then I looked at the BB while just doing regular maintenance and found something which seems like a crack to me. So now I was worried a bit and tried to contact the manufacturer and seller, Tsunami Bicycles. Wrote two mails, did three requests over the support formular on the website: Never got an answer... I am really hoping for a reply.

So I will add some pictures and would like to hear your opinion, please.
I do not have much experience with materials and I am unsure, how to classify this crack. Maybe it is fine, maybe I should not ride it anymore. For me, it looks like the crack was there before painting, as the paint seems to be in good condition.
The Bike has around 500km clocked now, half of them on an indoor trainer, so it is almost new.

Also tell us if you have some experience with the GR02 Frame, good or bad.

Thanks, Steve

Ok I found some pictures and Infos. Looks really nice, but has no mounting points at the rear. I am planning to build a slingfing copy for bikepacking, so I need some mounting points. But still thanks for the heads up!

Now I am unsure if I am going with the CBG02 handlebar, which is a gravel style handlebar and has flare, or with the CHB1036 handlebar, which is a classic road handlebar. Riding profile would be 75% road, 25% gravel. Never tried handlebar with flare... Any recommendations?

Thanks for your help to all!

I just had a look at the CFR505, and it does not have internal cable routing, and max rotor size is 160mm.
Is it the new version of the CFR696?

So I will stick with the CFR707 in 'British racing green' for now, I guess

They look pretty similar, and the Geo also looks comparable.

The Carbonda comes with Seatpost and handlebars + all the accesories to mount these, and I am sure that everything will fit together. Price would be around 900$ with my chosen color.
The BXT comes without these accessories and parts, so I would have to spend at least another 200$ to get the same, and could run into troubles making everthing fit together. So I would end up at atleast 650$ here, which is not that big of a difference.

I will get the Carbonda with chosen color, I think I will be more happy with this, even if it is more expensive.

Does anyone know, if Carbonda ever has something like a sale sometimes? As right now ICAN, Elitewheels etc. are all giving discounts.

Hey Guys,

I need some help for my decision.

I want to build a carbon gravel/road bike. I will use a LTWOO GRT (1×12s) with a Magene P505 Power Meter crank combi.

So: Should I go cheap and buy the BXT 135 on Ali with the sale tomorrow, or should I go for more quality with the Carbonda CFR707. It's like 400$ vs. 800$...

I want fully internal cable routing, so this is a must. Maybe you have some other ideas?

Last build was a Tsunami GR02, but not to happy with it due to heavy frame flex when putting down power. I am 183cm and 90kg.

Thanks in advance!

So I ordered everything I need (hopefully), now the waiting game begins.
I will get the Seaboard GR02 Alu frame, saves me about 250€ for some 100 grams, so I'm fine with that.
For tires I chose the Vittoria Terreno Zero.

I am looking forward to built everything together! Grab a look into the lighterpack list here again: https://lighterpack.com/r/4chhje

Thank you for the help!

I bought some DT Swiss P1800 Wheels new for 200€, and I am looking out for a GRX600 Setup, but I think I will just order the LTWOO R9 2x11 All-in-One Kit, as it has everything incl. Crank, Casette etc. and I will simply use the ZRACE BR-005 Brakes.
Going fully hydraulic is a huge cost factor, as the whole Groupset Kit is like 350 incl. almost everything I need except Bars, Frame and Wheels.

Ok, I will stick to the 50/34 and 11-32/34 Drivetrain setup, didn't thought about the bigger tire diameter. Thanks!
Also not having carbon rims isn't a downer for me, they have the same weight as almost all carbon wheelsets on Ali etc., so I don't really care

I will go for an allround bike as I am a student and don't have much money for a second bike build. I will a lot of Road Cycling, so it should be a Road Bike with gravel capabilities and will get used 2-3 times a year for some bikepacking. Going with a hardtail frame would be a option for an bikepacking-only bike, but as I want to do a lot of road cycling too, that doesn't seem the best option for me.

Thank you for all yout tips! I am still unsure between the Carbonda Carbon frame and the Seaboard Aluminium frame...

Thank you for your kind answer, nice build!

Okei, so for now I am still unsure if i will grab the CFR707 or the CFR696, I dont know which one would suit me better.

Regarding the Wheelset, I will also look around at Ebay and go for something cheaper. I wasn't aware that there are wheelsets for around 200€ when everything at Ali is like 400+ Also Centerlock will be choosen.

I will surely go for the LTWOO Set, but not full hydraulic, as that is just to expensive. This is the reason I will go with the ZRACE BR-005.

Also I got a new Question: Are 36mm Wheels possible with a 18mm (inner) rim width?

Hello,

I've read a lot in the last few weeks and now the time has come. I am planning to build an All-in-One Bike, which suits my weekly Road (training) tours, but also my planned bikepacking tours.

But I still have a lot of questions, as this will be my first build. Also I don't want to spend to much money on this, thought about staying below 1000€, but seems almost impossible so upgraded to a Budget of 1500€.

I want a 2x11 groupset, right now I tend to the LTWOO R9 2x11 with 52/36 and 11-34 (if it fits, if not 11-32) casette. Should fit fine for some tours as well as a quick road tour. I think I will take the Zrace BR-005 with 160mm Rotors, even thought about going 180mm for the front (because of bikepacking).
I will buy the groupset from AliExpress with the Zrace Crank and brakes in set and will ask to exchange the BR-002 for the BR-005.

But I am very unsure about the frame, if I should go with the cheap Seaboard GR02 Alu frame or go for the more expensive Carbonda CFR 696 (or the CFR707, pros & cons?).

Regarding the Wheels, I don't have any clue about this topic.
Centerlock or 6-Bolt?
Your opinion regarding order 6-Bolt and use centerlock adapters?
I will need Shimano HG mounts on the rear hub with the LTWOO R9 set, correct?
Maybe you have some suggestions for a cheap wheelset, as 400€+ are a lot of money.

I made a list at lighterpack (a well known tool in the ultralight trekking scene): [deleted]
All prices are incl. Shipping!

Sadly Carbonda can't ship a frame and a wheelset together, so i would have to pay 300€ for shipping, thats a little downer at this front.

I would love to get some more informations and experiences. Where can I save some money, maybe you know a great but inexpensive wheelset, or have another idea for a frame.