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Re: Epic Evo Clone Quote Which of the Airwolf frames are the Epic Evo replica? Is it 100mm rear travel or can they be set up as 120mm rear travel? Airwolf calls it the YFM059 When it comes to travel there is a problem. This frame and the other open mold frames that use the same design are copies of the older EPIC frame - not the EPIC EVO. The Epic they copied had 100mm of travel but only when paired with the special brain shock that is 265x52.5mm - thats 52.2mm of stroke. The aliexpress sellers are recommending a 190x40 shock or 190x45. This results in a lot less than 100mm of travel. 45 stroke gets you to around 85-90mm of travel NOT the 100mm they advertise Since the specialized EPIC EVO comes with 110mm and can be upstroked up to 120mm (using 190x40 and 190x45 respectively) with the same front triangle some people have wondered if using the EVO linkages would get to that travel. Unfortunately the EVO rear triangle mounts to the EVO linkage very differently so you would need an EVO rear triangle as well as the linkage to make that work - or a custom CNC machined linkage that offers the leverage ratio of the EVO but fits the rear triangle of the EPIC. its not clear how much travel the EPIC rear triangle would allow in that situation. There is a version of this frame for sale on DIY carbon bikes that advertises 120mm of travel with a 190x40 stroke shock. It however uses the EPIC linkage just like Airwolf, Until someone proves me wrong I can only assume this is wildly false advertising and comes from the chinese suppliers who have confused the EPIC with the EPIC EVO. I have added some images to show what an EPIC linkage looks like (from specialized website) - and its the same as the open mold copies and an image to show what an EVO linkage looks like - allowing for much more travel using 40 and 45mm stroke shocks. I think the Chinese companies simply got confused between the names and specs of the specialized bikes as they look very similar (and indeed the front triangle is the same), so they call it an EVO clone when it is an EPIC clone and then spec EVO shocks and advertise the 100m travel of the EPIC bike. Hopefully this clears it up. November 26, 2024, 09:09:09 AM	1
Re: Epic Evo Clone Quote from: Imminent Injuries on January 03, 2025, 01:01:54 AM The rear shock linkage, where it connects to the rear triangle in two places, has bushings in it with poly flanges. However, I've noticed the way they sit against the CF frame causes significant resistance unless you run the bolts so loose that there is play and they risk backing out. Not great for small bump compliance at the recommended torque spec. The backing out of screws is easily fixed with red loctite, but you are still fighting the battle of play in the linkage vs too much resistance on the bushings. Seems a relatively straightforward okayish fix with some greased M8x16 shims, but definitely an oversight on the design. Will follow up with pics and my solution in a few days if I'm happy with the shims. Also for those who said 2.5mm shim under the headset cap, I've 3d printed a few at different thicknesses and found 3.5mm to be a better fit. At 2.5mm, it crushes the rubber gasket in the headset cap a little more than necessary for sealing. Also, my recently purchased frame has a rubber gasket for the brake/RD lines at the bottom bracket/lower rear triangle junction, so it seems they are still improving things. I do wish the seatpost could be inserted further, but given the role of the frame I can live with it. They still don't have a gasket for where the Brake/RD cables enter near the headtube, but I'll probably print a solution for that too once my roll of TPU filament arrives. This part you are wishing for… it can be bought from most bike shops. It is the MY21 Epic headtube port grommet. I added it to mine! How did the shims work out for you? I haven’t noticed this issue with my build, as the small bump compliance is pretty good. But would def add them when i build it up with the new front triangle. January 21, 2025, 01:00:21 PM	1

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Re: Epic Evo Clone

Quote

Which of the Airwolf frames are the Epic Evo replica?

Is it 100mm rear travel or can they be set up as 120mm rear travel?

Airwolf calls it the YFM059

When it comes to travel there is a problem. This frame and the other open mold frames that use the same design are copies of the older EPIC frame - not the EPIC EVO. The Epic they copied had 100mm of travel but only when paired with the special brain shock that is 265x52.5mm - thats 52.2mm of stroke.

The aliexpress sellers are recommending a 190x40 shock or 190x45. This results in a lot less than 100mm of travel. 45 stroke gets you to around 85-90mm of travel NOT the 100mm they advertise

Since the specialized EPIC EVO comes with 110mm and can be upstroked up to 120mm (using 190x40 and 190x45 respectively) with the same front triangle some people have wondered if using the EVO linkages would get to that travel. Unfortunately the EVO rear triangle mounts to the EVO linkage very differently so you would need an EVO rear triangle as well as the linkage to make that work - or a custom CNC machined linkage that offers the leverage ratio of the EVO but fits the rear triangle of the EPIC. its not clear how much travel the EPIC rear triangle would allow in that situation.

There is a version of this frame for sale on DIY carbon bikes that advertises 120mm of travel with a 190x40 stroke shock. It however uses the EPIC linkage just like Airwolf, Until someone proves me wrong I can only assume this is wildly false advertising and comes from the chinese suppliers who have confused the EPIC with the EPIC EVO.

I have added some images to show what an EPIC linkage looks like (from specialized website) - and its the same as the open mold copies
and an image to show what an EVO linkage looks like - allowing for much more travel using 40 and 45mm stroke shocks.

I think the Chinese companies simply got confused between the names and specs of the specialized bikes as they look very similar (and indeed the front triangle is the same), so they call it an EVO clone when it is an EPIC clone and then spec EVO shocks and advertise the 100m travel of the EPIC bike.

Hopefully this clears it up.
November 26, 2024, 09:09:09 AM

Re: Epic Evo Clone

Quote from: Imminent Injuries on January 03, 2025, 01:01:54 AM

The rear shock linkage, where it connects to the rear triangle in two places, has bushings in it with poly flanges. However, I've noticed the way they sit against the CF frame causes significant resistance unless you run the bolts so loose that there is play and they risk backing out. Not great for small bump compliance at the recommended torque spec. The backing out of screws is easily fixed with red loctite, but you are still fighting the battle of play in the linkage vs too much resistance on the bushings. Seems a relatively straightforward okayish fix with some greased M8x16 shims, but definitely an oversight on the design.

Will follow up with pics and my solution in a few days if I'm happy with the shims.

Also for those who said 2.5mm shim under the headset cap, I've 3d printed a few at different thicknesses and found 3.5mm to be a better fit. At 2.5mm, it crushes the rubber gasket in the headset cap a little more than necessary for sealing.

Also, my recently purchased frame has a rubber gasket for the brake/RD lines at the bottom bracket/lower rear triangle junction, so it seems they are still improving things. I do wish the seatpost could be inserted further, but given the role of the frame I can live with it.

They still don't have a gasket for where the Brake/RD cables enter near the headtube, but I'll probably print a solution for that too once my roll of TPU filament arrives.

This part you are wishing for… it can be bought from most
bike shops. It is the MY21 Epic headtube port grommet. I added it to mine!

How did the shims work out for you? I haven’t noticed this issue with my build, as the small bump compliance is pretty good. But would def add them when i build it up with the new front triangle.
January 21, 2025, 01:00:21 PM

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