Tyre inserts and su...
 

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Tyre inserts and suspension changes

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hi everyone!

I've been using an insert in my rear tyre for a few years now, huck norris first then a rimpact. Puncture protection solely. I have recently installed rimpact pro in the front tyre, gave it a test run on tuesday.  2.5 assegai maxxgrip DH.  (will probably try a lighter tyre when this one wears out but i am usually DH tyres or go home, probably with a puncture)

Anyhows, i inflated till 22psi. The grip felt great, but it was and has been dry here for a while. What i did notice however was that it felt more 'fatiguing' and the fork felt spikier. Like the first intitial grip was great and supple, then i presume when the trail features reached the insert it was harsher, if that makes sense?  Perhaps rebound from the insert itself?

Have you changed fork settings when using an insert?  ta!


 
Posted : 02/09/2022 7:01 am
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If anything I noticed the opposite, a more planted and damped feeling with chatter and buzz taken out and a bit of extra cushion feel. That's when similar pressures but Exo sidewall.

Interesting you have the tougher Pro in the front. I was looking at a Pro for the rear. Could you swap front to back and see if that is noticeable?


 
Posted : 02/09/2022 7:21 am
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Not changed suspension settings but I run a couple of psi less in my tyres with inserts.


 
Posted : 02/09/2022 7:22 am
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would rather not swap as i've paid for pro and the old one in rear is due for a chnage tbh


 
Posted : 02/09/2022 8:15 am
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Just put the pro in the rear and run the front without.


 
Posted : 02/09/2022 8:17 am
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Sure why didnt  i think of that. 🤦🏻‍♂️


 
Posted : 02/09/2022 10:21 am
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Are you using the same pressure as you were without the insert? I tend to run a few psi less than I would without an insert, the insert essentially increases the progression of the tyre 'suspension' in that there's less air volume and there's the foam that will be firmer than the air it replaces.

I'd start with dropping pressure and playing around with that - unless you're a hard rider who goes fast all the time you can probably run sub 20 psi on the front. Then you may have to reduce your high speed compression a click or 2 (presuming it's the medium to bigger hits that you're feeling). Lower pressure should reduce the smaller chatter coming through though.

I'm on about 17psi on a 2.6 mazza up front with a standard rimpact.


 
Posted : 02/09/2022 10:40 am
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ok cheers wow that low psi, will give it a go!


 
Posted : 02/09/2022 12:55 pm
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As above, reduced tyre pressures for me, Im a heavy rider at 95ish kilos, was running 25 front and rear without inserts, with rimpact fitted (pro rear, normal front) i run around 20.

Feels great, great grip and takes out some of the trail "chatter"


 
Posted : 02/09/2022 1:40 pm
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Definitely know the feeling you are talking about. It’s mentioned in the Pink Bike insert review as well.

https://m.pinkbike.com/news/review-6-best-tire-inserts-2021-ridden-rated.html#rimpact

Took them out and the feeling went away, but so did the damped, planted, supported feeling. Put them back in after a few weeks. Tyre pressures definitely benefit from bring a couple of psi lower than you’d usually run. Also sped up rebound at both ends by a click and took off a two clicks of HSC off the fork. Maybe just got used to them after time.
For what it’s worth, when it came to choosing inserts for my ebike I went with them again.


 
Posted : 02/09/2022 1:41 pm
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@clubby thanks for that, hadn't seen the pinkbike review, that is exactly what i mean!


 
Posted : 03/09/2022 8:20 am

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