Author Topic: New frame: Longteng RD301-D  (Read 41021 times)

kwantani

Re: New frame: Longteng RD301-D
« Reply #225 on: January 08, 2025, 11:37:39 PM »
GOOD NEWS!
As soon as I replaced the TA with the one from my other Java Fuoco bike, the rear wheel wobble/play disappeared!

Looks like LongTeng sourced the wrong size TA.



It is only 3mm shorter than the supplied thru axle with 2mm spacer. This Java TA should fit and fix the play issue. Please try and report! I'm getting ready to make an order on this frame once this issue is sorted out.

kwantani

Re: New frame: Longteng RD301-D
« Reply #226 on: January 10, 2025, 06:36:05 PM »
I understand Chinese bike in general has no serial number. Is this the case for LT as well? maybe they've some hidden serial # etched in some where. I looked, but so far can't find them.

Hillhater

Re: New frame: Longteng RD301-D
« Reply #227 on: January 11, 2025, 05:34:46 AM »
I understand Chinese bike in general has no serial number. Is this the case for LT as well? maybe they've some hidden serial # etched in some where. I looked, but so far can't find them.

I asked to LT bike to print serical number(or code) on the frame when I order, the reply was that there is no serial number.

I think they have batch number at least for the manufacture, but it seems they don't like to disclose it.

Alexander

Re: New frame: Longteng RD301-D
« Reply #228 on: January 17, 2025, 02:31:27 AM »
Super. Let us know when it arrives if I may ask.

Will do! However, I got an email from Vivian saying that they did not have the fork in matt black which I have ordered. They could send me a raw carbon fork and I could paint it but I don't want that so I rather wait until after their holidays for me to get the fork and frame in the same color. Still snow here in Sweden anyways. They will send the frame + fork in February instead.


Alexander

Re: New frame: Longteng RD301-D
« Reply #229 on: January 17, 2025, 02:32:18 AM »
Has anybody put a powermeter on this frame?

I am trying to figure out if the Magene 505 would work or something else.

Crucial97

Re: New frame: Longteng RD301-D
« Reply #230 on: January 28, 2025, 09:11:16 AM »
I was curious if we could get any ride reports from the members who built up the frame?
I'm heavily considering getting this frame in the near future and was just wondering how it felt ok the road and if anyone could compare it to any other mainstream bikes they've ridden?

Also how offset is the seatpost that it comes with. I've been trying to figure out what size frame to buy. With the offset post I'm leaning towards 50/52. I am 170cm tall with a 79cm inseam?

Ahodesu05

Re: New frame: Longteng RD301-D
« Reply #231 on: January 29, 2025, 07:18:54 AM »
I was curious if we could get any ride reports from the members who built up the frame?
I'm heavily considering getting this frame in the near future and was just wondering how it felt ok the road and if anyone could compare it to any other mainstream bikes they've ridden?

Also how offset is the seatpost that it comes with. I've been trying to figure out what size frame to buy. With the offset post I'm leaning towards 50/52. I am 170cm tall with a 79cm inseam?

I'll share some impressions. I'm only at around 500km logged on the bike and I'm comparing this to my previous bike, which is an older 2013 Scott CR1 Pro, so take this FWIW.

- Handling is neutral, as you'd expect from its geometry. It's not a twitchy race or crit bike, but it's responsive enough and confident through corners and on twisty descents. This is something I appreciate, coming from my jittery Scott.

- Ride quality is pretty compliant. I can feel the road but much less of the impact vs. my Scott, if that makes any sense. I have 32mm tires (on wheels with steel - not carbon - spokes) so I'm sure that contributes to the ride quality.

- It's pretty fast. Compared to my Scott, I average 1 - 1.5 km/h faster on my endurance rides. I haven't done too many high intensity efforts but I expect the aero qualities to shine through even more when I do.  I don't know if this is just about the frame from an aero perspective: I put on narrower 38cm bars and 45mm wheels, so it's probably the overall package.

- I took the bike on a local climb that averages ~7.5%, where aerodynamics don't come into play, and set a PB (even though I've done mostly base miles recently). This bike is pretty close in weight to my Scott, so it wasn't about weight savings. On steeper climbs, it's more about power and rolling resistance. Frame stiffness (and that ginormous T47 BB) probably helps with more efficient power application, and my new-ish GP5000 with TPU tubes contribute on the rolling resistance front. So the whole bike probably contributes to added speed on climbs, not just the frame.

- Acceleration is pretty good. I mentioned before that on my first few rides through traffic, I had to soft pedal a few times when I found myself getting up to speed a bit quicker than what I was used to.

So, overall, I think the ride is pretty much the all-arounder that it's billed as. I've been pretty happy with it. I haven't ridden other Chinese frames or more modern big brand frames to make those comparisons, but I think what Peak Torque said in one of his videos is probably right: once you get these Chinese frames built up, it's hard to tell them apart.

The seat post offset is around 20mm but you can ask LT to confirm.

I'm 174cm with 78cm inseam and got the 52, which fits me pretty well. I almost got the 50 because I was also a bit worried about the seat post offset impact on reach, but the 52 worked out well for me with the narrower bars helping to reduce the reach a bit to fit me.

Hope this helps!
« Last Edit: January 29, 2025, 04:06:48 PM by Ahodesu05 »

Ahodesu05

Re: New frame: Longteng RD301-D
« Reply #232 on: January 29, 2025, 07:31:42 AM »
Has anybody put a powermeter on this frame?

I am trying to figure out if the Magene 505 would work or something else.

I don't think the Magene works with the T47 bottom bracket - I asked Magene previously and they said no. I have a 4iiii 3+ on mine.

Crucial97

Re: New frame: Longteng RD301-D
« Reply #233 on: January 29, 2025, 08:06:07 PM »
I'll share some impressions. I'm only at around 500km logged on the bike and I'm comparing this to my previous bike, which is an older 2013 Scott CR1 Pro, so take this FWIW.

- Handling is neutral, as you'd expect from its geometry. It's not a twitchy race or crit bike, but it's responsive enough and confident through corners and on twisty descents. This is something I appreciate, coming from my jittery Scott.

- Ride quality is pretty compliant. I can feel the road but much less of the impact vs. my Scott, if that makes any sense. I have 32mm tires (on wheels with steel - not carbon - spokes) so I'm sure that contributes to the ride quality.

- It's pretty fast. Compared to my Scott, I average 1 - 1.5 km/h faster on my endurance rides. I haven't done too many high intensity efforts but I expect the aero qualities to shine through even more when I do.  I don't know if this is just about the frame from an aero perspective: I put on narrower 38cm bars and 45mm wheels, so it's probably the overall package.

- I took the bike on a local climb that averages ~7.5%, where aerodynamics don't come into play, and set a PB (even though I've done mostly base miles recently). This bike is pretty close in weight to my Scott, so it wasn't about weight savings. On steeper climbs, it's more about power and rolling resistance. Frame stiffness (and that ginormous T47 BB) probably helps with more efficient power application, and my new-ish GP5000 with TPU tubes contribute on the rolling resistance front. So the whole bike probably contributes to added speed on climbs, not just the frame.

- Acceleration is pretty good. I mentioned before that on my first few rides through traffic, I had to soft pedal a few times when I found myself getting up to speed a bit quicker than what I was used to.

So, overall, I think the ride is pretty much the all-arounder that it's billed as. I've been pretty happy with it. I haven't ridden other Chinese frames or more modern big brand frames to make those comparisons, but I think what Peak Torque said in one of his videos is probably right: once you get these Chinese frames built up, it's hard to tell them apart.

The seat post offset is around 20mm but you can ask LT to confirm.

I'm 174cm with 78cm inseam and got the 52, which fits me pretty well. I almost got the 50 because I was also a bit worried about the seat post offset impact on reach, but the 52 worked out well for me with the narrower bars helping to reduce the reach a bit to fit me.

Hope this helps!

Thanks,
That's exactly the kind of info I was looking for. It seems like I'll probably be okay with the 52 then. What length of stem did you go with?

This frame seems to fit the bill for what I'm looking for. Also Alisa said that the thru axle issue has been completely solved as soon as someone brought it up.

Ahodesu05

Re: New frame: Longteng RD301-D
« Reply #234 on: January 29, 2025, 08:39:07 PM »
Thanks,
That's exactly the kind of info I was looking for. It seems like I'll probably be okay with the 52 then. What length of stem did you go with?

This frame seems to fit the bill for what I'm looking for. Also Alisa said that the thru axle issue has been completely solved as soon as someone brought it up.

I don’t have a slammed cockpit (just thinking about that makes my back and shoulders ache…), with about 4mm drop from my saddle to stem. I have a 100mm stem, 110mm would have been fine too. I think with my size, the 52 is just right. With a 50, I suspect I might be a bit too far forward in terms of weight distribution.

I should ask Alisa to send me the right through axle!

Crucial97

Re: New frame: Longteng RD301-D
« Reply #235 on: January 29, 2025, 09:59:10 PM »
You should ask her for the right one.
Thanks for the information!

Serge_K

Re: New frame: Longteng RD301-D
« Reply #236 on: Today at 01:39:17 AM »
I should ask Alisa to send me the right through axle!

You got charged for it, so yes! did you get / pay for the sock that goes into the down tube? Having ridden quite a bit my 268, i'd say, consider ordering an extra set of headset bearings, for eg (these fully integrated bikes have much worse weather proofing of the top bearing than old school full external stuff with a big nice tight lip over the bearing). that way they still sell you something as they fix their mistake, it's less of a net loss to them.
Fast on the flat. And nowhere else.

Crucial97

Re: New frame: Longteng RD301-D
« Reply #237 on: Today at 01:19:00 PM »
Something to note. I had asked for a picture of the fork and confirmed that you should be able to use a FSA NO.69 or a Ritchie E logic IS headset with the RD301 frame that way you don't have to be stuck with an integrated stem/bar combo.