Change 27.5”-27.5” to 27.5”-29”

Ferrero
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1/15/2024
Location
Galicia, Lugo, ES

I currently have a 27.5" reign 1 2020, do you know if it would be okay if I changed the wheel to a 29"? The bike is going very well, but I hear a lot that the mullet is better going downhill, that it swallows more...

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veefour
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Cinderford, GB
1/20/2024 3:50pm Edited Date/Time 1/20/2024 3:52pm

I had a Commencal Meta that was 27.5 and I fitted a 29 wheel and fork. It slackens the head and seat angles, shortens the reach slightly and raises the bottom bracket.

Overall I preferred it as a mullet, it maybe didn't climb as well, but to me it felt better on the descents, I like the added rollover you get with a larger front wheel.

1
Glory831Guy
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Location
Santa Cruz, CA, USA
1/20/2024 3:57pm

You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The bike still feels very balanced and agile. It actually feels more balanced front to back than it did as a full 27.5 bike. With 29er front wheel it maintains speed/momentum better over rocks and roots. If you do a lot of jumps, the full 27.5 might be better for your riding style, but the 29 front wheel definitely makes small to medium sized impacts less intense. The bike doesn't feel too slack climbing, and I haven't noticed any negative effects from the higher bottom bracket. 

 

Ferrero
Posts
21
Joined
1/15/2024
Location
Galicia, Lugo, ES
1/20/2024 4:09pm
veefour wrote:
I had a Commencal Meta that was 27.5 and I fitted a 29 wheel and fork. It slackens the head and seat angles, shortens the reach...

I had a Commencal Meta that was 27.5 and I fitted a 29 wheel and fork. It slackens the head and seat angles, shortens the reach slightly and raises the bottom bracket.

Overall I preferred it as a mullet, it maybe didn't climb as well, but to me it felt better on the descents, I like the added rollover you get with a larger front wheel.

They say that the geometry of the bicycle is changed, but that it works better that way, the question is that I didn't know if there were people who would use a 27.5 to mullet... if it doesn't penalize too much going up, I will most likely change it then. The only bad thing is if it penalizes? There is a lot of unevenness here... and if it is very noticeable, then in the end it takes its toll haha, but hey, thank you very much :D

Ferrero
Posts
21
Joined
1/15/2024
Location
Galicia, Lugo, ES
1/20/2024 4:28pm
You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The...

You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The bike still feels very balanced and agile. It actually feels more balanced front to back than it did as a full 27.5 bike. With 29er front wheel it maintains speed/momentum better over rocks and roots. If you do a lot of jumps, the full 27.5 might be better for your riding style, but the 29 front wheel definitely makes small to medium sized impacts less intense. The bike doesn't feel too slack climbing, and I haven't noticed any negative effects from the higher bottom bracket. 

 

If so, I would look for a 29" fork. Having a reign, your opinion is very exact and precise about the change. The area where I usually go out is broken and also has jump descents, it is versatile, it has a little bit of everything, but mainly I would say that it is mostly rocks, roots, steps... is it agile in a curve? (compared to the 27.5) mine in broken areas I notice it gets a little stuck and you have to go around the place quite a bit since in the holes or steps, the margin for error is small. Now it's time to maintain the suspension and I wanted to take the opportunity to put in a LUFTKAPPE KIT, which they say improves the main section of the fork, or change the fork for a 29" one, that's the question too. .. what a mess Dry

Glory831Guy
Posts
152
Joined
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Location
Santa Cruz, CA, USA
1/20/2024 5:01pm Edited Date/Time 1/20/2024 5:02pm
You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The...

You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The bike still feels very balanced and agile. It actually feels more balanced front to back than it did as a full 27.5 bike. With 29er front wheel it maintains speed/momentum better over rocks and roots. If you do a lot of jumps, the full 27.5 might be better for your riding style, but the 29 front wheel definitely makes small to medium sized impacts less intense. The bike doesn't feel too slack climbing, and I haven't noticed any negative effects from the higher bottom bracket. 

 

Ferrero wrote:
If so, I would look for a 29" fork. Having a reign, your opinion is very exact and precise about the change. The area where I...

If so, I would look for a 29" fork. Having a reign, your opinion is very exact and precise about the change. The area where I usually go out is broken and also has jump descents, it is versatile, it has a little bit of everything, but mainly I would say that it is mostly rocks, roots, steps... is it agile in a curve? (compared to the 27.5) mine in broken areas I notice it gets a little stuck and you have to go around the place quite a bit since in the holes or steps, the margin for error is small. Now it's time to maintain the suspension and I wanted to take the opportunity to put in a LUFTKAPPE KIT, which they say improves the main section of the fork, or change the fork for a 29" one, that's the question too. .. what a mess Dry

I think you will really like the mullet setup if you are riding rough terrain where the bike feels like it gets kind of stuck. In these areas, a slacker head angle will help the bike push through the rough and help maintain your forward drive. I usually ride downhill trails that have more jumps and flowy sections, and even on these less severe trails, I prefer the mullet. Whenever I ride trails like you describe I feel like the mullet setup feels MUCH better than full 27.5.   

Ferrero
Posts
21
Joined
1/15/2024
Location
Galicia, Lugo, ES
1/21/2024 12:22am
You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The...

You will need a 29er front suspension, or install 29er fork lowers. I run a 170mm fork on mine (2018 Reign2) and 29er front wheel. The bike still feels very balanced and agile. It actually feels more balanced front to back than it did as a full 27.5 bike. With 29er front wheel it maintains speed/momentum better over rocks and roots. If you do a lot of jumps, the full 27.5 might be better for your riding style, but the 29 front wheel definitely makes small to medium sized impacts less intense. The bike doesn't feel too slack climbing, and I haven't noticed any negative effects from the higher bottom bracket. 

 

Ferrero wrote:
If so, I would look for a 29" fork. Having a reign, your opinion is very exact and precise about the change. The area where I...

If so, I would look for a 29" fork. Having a reign, your opinion is very exact and precise about the change. The area where I usually go out is broken and also has jump descents, it is versatile, it has a little bit of everything, but mainly I would say that it is mostly rocks, roots, steps... is it agile in a curve? (compared to the 27.5) mine in broken areas I notice it gets a little stuck and you have to go around the place quite a bit since in the holes or steps, the margin for error is small. Now it's time to maintain the suspension and I wanted to take the opportunity to put in a LUFTKAPPE KIT, which they say improves the main section of the fork, or change the fork for a 29" one, that's the question too. .. what a mess Dry

I think you will really like the mullet setup if you are riding rough terrain where the bike feels like it gets kind of stuck. In...

I think you will really like the mullet setup if you are riding rough terrain where the bike feels like it gets kind of stuck. In these areas, a slacker head angle will help the bike push through the rough and help maintain your forward drive. I usually ride downhill trails that have more jumps and flowy sections, and even on these less severe trails, I prefer the mullet. Whenever I ride trails like you describe I feel like the mullet setup feels MUCH better than full 27.5.   

Great, what worried me was that the bike would be bad because it didn't come prepared to be a mullet, I'm 170mm up front, would I have to go down to 160mm so as not to change the geometry too much?

veefour
Posts
855
Joined
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Location
Cinderford, GB
1/21/2024 2:23am Edited Date/Time 1/21/2024 2:24am
Ferrero wrote:
Great, what worried me was that the bike would be bad because it didn't come prepared to be a mullet, I'm 170mm up front, would I...

Great, what worried me was that the bike would be bad because it didn't come prepared to be a mullet, I'm 170mm up front, would I have to go down to 160mm so as not to change the geometry too much?

I also dropped the travel by 10mm on my Meta. Because of the larger front wheel I didn't notice it. You probably will notice that it will corner differently, you have to tip the front end in a bit earlier, but I found you adapt to that very quickly.

Ferrero
Posts
21
Joined
1/15/2024
Location
Galicia, Lugo, ES
1/21/2024 2:33am
Ferrero wrote:
Great, what worried me was that the bike would be bad because it didn't come prepared to be a mullet, I'm 170mm up front, would I...

Great, what worried me was that the bike would be bad because it didn't come prepared to be a mullet, I'm 170mm up front, would I have to go down to 160mm so as not to change the geometry too much?

veefour wrote:
I also dropped the travel by 10mm on my Meta. Because of the larger front wheel I didn't notice it. You probably will notice that it...

I also dropped the travel by 10mm on my Meta. Because of the larger front wheel I didn't notice it. You probably will notice that it will corner differently, you have to tip the front end in a bit earlier, but I found you adapt to that very quickly.

Are you referring to the fork travel? From what I see they are all improvements :D

veefour
Posts
855
Joined
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Location
Cinderford, GB
1/21/2024 3:21am
Ferrero wrote:

Are you referring to the fork travel? From what I see they are all improvements :D

Yes.

Ferrero
Posts
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Joined
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Location
Galicia, Lugo, ES
1/21/2024 5:55am
Ferrero wrote:

Are you referring to the fork travel? From what I see they are all improvements :D

veefour wrote:

Yes.

perfect, now it's time to look at "RCZ" calmly, thank you very much

Glory831Guy
Posts
152
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10/21/2023
Location
Santa Cruz, CA, USA
1/21/2024 8:08am

I stayed at 170 travel up front even with the mullet. Still feels balanced to me, but I also switched to a coil shock and Cascade linkage at the same time. Keep in mind that the Reign at 160/160 has a relatively steep head angle by modern standards at 65*. There was also a Reign SX park bike with DVO suspension, and that bike came stock with a 180 fork. So honestly you might be better off at 170mm since it sounds like you ride pretty chunky downhill, and a slacker head angle will definitely help you there.

https://www.vitalmtb.com/product/guide/Bikes,3/Giant/Reign-SX-1,23744

1
Ferrero
Posts
21
Joined
1/15/2024
Location
Galicia, Lugo, ES
1/21/2024 12:16pm
I stayed at 170 travel up front even with the mullet. Still feels balanced to me, but I also switched to a coil shock and Cascade...

I stayed at 170 travel up front even with the mullet. Still feels balanced to me, but I also switched to a coil shock and Cascade linkage at the same time. Keep in mind that the Reign at 160/160 has a relatively steep head angle by modern standards at 65*. There was also a Reign SX park bike with DVO suspension, and that bike came stock with a 180 fork. So honestly you might be better off at 170mm since it sounds like you ride pretty chunky downhill, and a slacker head angle will definitely help you there.

https://www.vitalmtb.com/product/guide/Bikes,3/Giant/Reign-SX-1,23744

Yes, the truth is that it does seem feasible to convert it to mullet, thank you very much for the information

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