Author Topic: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?  (Read 277098 times)

glepore

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1275 on: June 10, 2025, 06:59:14 AM »
thanks guys for the answers, so if I understood correctly sl8-x68 front has proprietary 68mm holes, proprietary adapter 68----34mm, standard is 70mm---34mm, LTWoo has 70mm adapter-----no 34mm holes.
can wheeltop calipers be mounted?
and when will the new magene group be marketed in the old continent? will it have the same problem?

Yes. Wheeltop calipers are standard 34mm and mount fine.

humbling9430

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1276 on: June 10, 2025, 10:14:14 AM »
Just read through this entire thread - I'm looking to get a new bike, and might roll the dice on this one.

Currently ride a Canyon Ultimate in size small, any recommendations on size for the X68? I'm 174cm, 78.5cm inseam, running 90mm stem on the Canyon. I did get a bike fit for the Canyon, but wanting something a bit more aggressive now - my saddle is pushed as far forward as possible on the Canyon. Size 54 still the way to go with 90mm stem? Or size down to 52 and increase stem length?


This would be my first bike build, so somewhat nervous about that too. Guess I could always take it to a local mechanic if/when I get stuck. Will be installing full Ultegra Di2 on it to start.

jonathanf2

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1277 on: June 10, 2025, 11:01:23 AM »
Ordered now a pair of ZRACE XG lets see…
TanTan and Ltwoo confirmed all the Shared comments of you all..

Those should work in terms of fitment, but I actually found the LTwoo calipers were better performers.  ;D

The battery assembly part turned out a mess… in a few words basically the battery is being on the bottom part of the tube and fortunately connected with the cables. I will think about how to take it out when the maintenance is needed…

Definitely go through the R088 thread. I think I was the first one to pioneer the LTwoo ER9/X battery solution in the SL8 knock-off frames!  ;D

Use two pieces of ribbon string on both ends of the battery holder. I recommend two as contingency if the first ribbon slips off. Ribbon is important because it stays buoyant in the seat tube. A long piece of ribbon can just float inside the seat post and ties easily to the holder. Also for a stuck battery, you'll have to remove the bottom bracket and use a metal hanger wire to push it out. I spent about 3-4 days figuring this out and it's fully documented on the R088 thread!

jonathanf2

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1278 on: June 10, 2025, 11:06:04 AM »
This happened to me as well — the holes in the seatpost were just slightly too high, so I had to file them down a little to get the Di2 battery clip to engage properly. I had the same issue with the Darimo seatpost I bought for my SL8.

Once that was sorted and the battery clipped in securely, I also wrapped some electrical tape around the top of the clip it to hold the battery  it firmly in place.

Unfortunately the SL8/X68/R088 battery clip doesn't work with the LTwoo battery, since it's a bit wider. For LTwoo ER9/X users, you have to slide the battery inside the seat tube all the way down and tie string to it in order to fish it out for maintenance. Luckily it's so snug, it doesn't move while riding.

glepore

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1279 on: June 10, 2025, 11:06:36 AM »
Just read through this entire thread - I'm looking to get a new bike, and might roll the dice on this one.

Currently ride a Canyon Ultimate in size small, any recommendations on size for the X68? I'm 174cm, 78.5cm inseam, running 90mm stem on the Canyon. I did get a bike fit for the Canyon, but wanting something a bit more aggressive now - my saddle is pushed as far forward as possible on the Canyon. Size 54 still the way to go with 90mm stem? Or size down to 52 and increase stem length?


This would be my first bike build, so somewhat nervous about that too. Guess I could always take it to a local mechanic if/when I get stuck. Will be installing full Ultegra Di2 on it to start.

I think I'd go 52 with a 115 stem. I'm 10 cm shorter and very comfortable on a 49 with a 115 and a couple spacers.

gbrnole

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1280 on: June 10, 2025, 12:09:54 PM »

Looks good
The clips is not great but the battery sort of clips in that why unsecured the top with tape.
to be honest the real  clips for the SL8 isn’t that great either.

agreed. when i built my actual SL8 it was literally a case of what is this janky clip? then i moved on to feeding the Di2 wire through the seat tube and reattaching the FD mount. that was definitely a FML moment for a few mins! 

i have a Seraph X68 coming for my kid. It's going to be fun comparing it the real thing.

gbrnole

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1281 on: June 10, 2025, 12:20:50 PM »
Just read through this entire thread - I'm looking to get a new bike, and might roll the dice on this one.

Currently ride a Canyon Ultimate in size small, any recommendations on size for the X68? I'm 174cm, 78.5cm inseam, running 90mm stem on the Canyon. I did get a bike fit for the Canyon, but wanting something a bit more aggressive now - my saddle is pushed as far forward as possible on the Canyon. Size 54 still the way to go with 90mm stem? Or size down to 52 and increase stem length?


This would be my first bike build, so somewhat nervous about that too. Guess I could always take it to a local mechanic if/when I get stuck. Will be installing full Ultegra Di2 on it to start.

how old are you and how flexible? i'm 175 cm with an 80cm inseam. I ride a 54cm frame with a 400x110 cockpit. standard SL8 offset seat post with the saddle positioned mid rails. My SL8 fits me like a glove. my prior bike, a Gen 6 Madone SLR was also in 54 with a 100mm stem (the handlebars are a longer reach on the Madone) and the seatmast cap with a 5mm layback. saddle also positioned mid rails. The SL8 actually less stretched out than the Madone despite the bikes being very similar in size.

If you have the ability to check out an SL8 at a local bike store you should. as noted above a 52 with a 110 stem might be the ticket for you.

voidptr

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1282 on: June 10, 2025, 12:28:43 PM »
Why isn't TanTan/Seraph releasing this frame with UDH?
I've been considering it as a backup, but every time I think they're surely about to add UDH support.
It's such an obvious update, especially since they're are releasing so many other frames with UDH.
I don't get it.

jonathanf2

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1283 on: June 10, 2025, 12:57:04 PM »
Why isn't TanTan/Seraph releasing this frame with UDH?
I've been considering it as a backup, but every time I think they're surely about to add UDH support.
It's such an obvious update, especially since they're are releasing so many other frames with UDH.
I don't get it.

There's the TanTan X70 which is the exact same frame as the SPCycle R088. Both are SL8 clones with slight modifications. It has UDH, mechanical cable routing, 52mm headset bearings and doesn't require an adapter for the front fork brake calipers (compatible with LTwoo's proprietary caliper design). The only thing they omit is the aero sniffer, in exchange for a more user friendly head tube design (for both integrated bars or separate stem/bars).

Sander2177

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1284 on: June 10, 2025, 02:07:55 PM »
Why isn't TanTan/Seraph releasing this frame with UDH?
I've been considering it as a backup, but every time I think they're surely about to add UDH support.
It's such an obvious update, especially since they're are releasing so many other frames with UDH.
I don't get it.


If you got instagram
And your Italian is good DM this Italian bike shop.

https://www.instagram.com/cicl1talia?igsh=MXVtYmEwb2d5dTd5NA==

I commented on a post they put up where they have UDH groupset fitted to a genuine SL8

SL8 Custom Green Over Naked Carbon 54CM 6.11KGS RhinosWorkShop Build (5.9kgs Est with upgrades on way)

X68 UD Gloss Bare Carbon 54cm 6.45kgs

IG @sanderson7721

Sander2177

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1285 on: June 10, 2025, 02:09:09 PM »
I think I'd go 52 with a 115 stem. I'm 10 cm shorter and very comfortable on a 49 with a 115 and a couple spacers.


I would agree
I’m 178cm and ride a 54cm with a 380x110cm stem.
Saddle height is about 745cm
SL8 Custom Green Over Naked Carbon 54CM 6.11KGS RhinosWorkShop Build (5.9kgs Est with upgrades on way)

X68 UD Gloss Bare Carbon 54cm 6.45kgs

IG @sanderson7721

humbling9430

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1286 on: June 10, 2025, 08:57:41 PM »
how old are you and how flexible? i'm 175 cm with an 80cm inseam. I ride a 54cm frame with a 400x110 cockpit. standard SL8 offset seat post with the saddle positioned mid rails. My SL8 fits me like a glove. my prior bike, a Gen 6 Madone SLR was also in 54 with a 100mm stem (the handlebars are a longer reach on the Madone) and the seatmast cap with a 5mm layback. saddle also positioned mid rails. The SL8 actually less stretched out than the Madone despite the bikes being very similar in size.

If you have the ability to check out an SL8 at a local bike store you should. as noted above a 52 with a 110 stem might be the ticket for you.

Early 30s, fairly flexible - I can touch my toes easily if that counts for anything. The SL8 offset look to be 15mm? The Ultimate is 8mm. Unfortunately there's no shop near me that has it in stock.

At least the geo doesn't seem too different between 52 and 54, so could compensate with the stem + spacers.

Thanks!

Will need to pull together a shopping list. Were there any "must-replace" items? Saw the Garmin mount for the handlebars, was there also the seatpost wedge?

gbrnole

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1287 on: June 10, 2025, 11:08:26 PM »
Early 30s, fairly flexible - I can touch my toes easily if that counts for anything. The SL8 offset look to be 15mm? The Ultimate is 8mm. Unfortunately there's no shop near me that has it in stock.

At least the geo doesn't seem too different between 52 and 54, so could compensate with the stem + spacers.

Thanks!

Will need to pull together a shopping list. Were there any "must-replace" items? Saw the Garmin mount for the handlebars, was there also the seatpost wedge?

yeah you should be fine on a 52. i rode a 52 for years until age caught up!

glepore

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1288 on: June 11, 2025, 07:01:30 AM »

Will need to pull together a shopping list. Were there any "must-replace" items? Saw the Garmin mount for the handlebars, was there also the seatpost wedge?
The wedge is fine. If you're a weight weenie you could modify the saddle clamp as Sander and I have done using yokes. Actually, find them easier to get the saddle on with. Otherwise all the parts work. The stem cap is a bit oversized, I don't mind, but an actual specialized one would fit more flush and is under $10.

planet_sammy

Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes?
« Reply #1289 on: June 11, 2025, 07:53:59 AM »
Early 30s, fairly flexible - I can touch my toes easily if that counts for anything. The SL8 offset look to be 15mm? The Ultimate is 8mm. Unfortunately there's no shop near me that has it in stock.

At least the geo doesn't seem too different between 52 and 54, so could compensate with the stem + spacers.

Thanks!

Will need to pull together a shopping list. Were there any "must-replace" items? Saw the Garmin mount for the handlebars, was there also the seatpost wedge?

I'd be very interested in your experience comparing it to your current bike if you buy the frame!

I also ride the Canyon Ultimate in size S (2018) and find that the frameset somehow sucks up the "performance"... so I'm really not happy with it!